Online ISSN
1350-911X
Print ISSN
0013-5194
Electronics Letters
Volume 42, Issue 16, 3 August 2006
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Volume 42, Issue 16
3 August 2006
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- Author(s): S.-W. Qu ; J.-L. Li ; Q. Xue
- Source: Electronics Letters, Volume 42, Issue 16, p. 893 –894
- DOI: 10.1049/el:20061371
- Type: Article
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A novel wide slot antenna with two strips within the circular slot is proposed, which achieves a wide impedance bandwidth of 2.2–11.5 GHz, enough to cover the ultra-wideband (UWB) frequency band ranging from 3.1 to 10.6 GHz defined by the Federal Communication Commission (FCC). With the help of the two strips, the radiation pattern can be quite stable across the whole operating band. Moreover, the proposed antenna has a small size and high gain of 5±2 dBi. - Author(s): D. Das Krishna ; M. Gopikrishna ; C.K. Aanandan ; P. Mohanan ; K. Vasudevan
- Source: Electronics Letters, Volume 42, Issue 16, p. 894 –895
- DOI: 10.1049/el:20061716
- Type: Article
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Design of a dual linearly-polarised microstrip patch antenna, excited by two orthogonal microstrip feed lines, is presented. A reduction in patch size of 35% is obtained when compared to a square patch operating at the same frequency. The polarisations are oriented at +45 and −45° with an isolation of more than 36 dB between the ports. Unlike earlier designs, the proposed structure provides better gain. - Author(s): S. Lim and H. Ling
- Source: Electronics Letters, Volume 42, Issue 16, p. 895 –897
- DOI: 10.1049/el:20061792
- Type: Article
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The design of a thin, multiply folded, electrically small antenna is proposed for achieving high efficiency in a physically compact size. A prototype antenna has been built and measured at 150 MHz. The achievable efficiency of the multiply folded design is found to be superior to that of the inductively coupled feed design. - Author(s): H.T. Anastassiu
- Source: Electronics Letters, Volume 42, Issue 16, p. 897 –898
- DOI: 10.1049/el:20061636
- Type: Article
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A very efficient computational technique for the input susceptance of an arbitrarily large circular loop antenna is presented. The Moment Method matrix is analytically inverted, owing to its circulant property. A magnetic frill excitation is utilised to ensure a well-defined finite susceptance. Results are very accurate, although the algorithm is based on elementary mathematical concepts. - Author(s): A. Moessinger ; R. Marin ; S. Mueller ; J. Freese ; R. Jakoby
- Source: Electronics Letters, Volume 42, Issue 16, p. 899 –900
- DOI: 10.1049/el:20061541
- Type: Article
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The realisation and characterisation of an electronically reconfigurable 35 GHz reflectarray, which is able to steer the main beam continuously between −20 and +20°, is reported. The tunable unit cells of the reflectarray are filled with nematic liquid crystal, a material that is able to change its effective permittivity as a result of an applied control voltage of up to 15 V. First, the unit cell and its performance, and then the setup of the reconfigurable reflectarray and its measured far-field patterns, are described.
Broadband microstrip-line-fed wide slot antenna with improved patterns
Compact dual-polarised square microstrip antenna with triangular slots for wireless communication
Design of thin, efficient, electrically small antenna using multiple foldings
Efficient algorithm for input susceptance of arbitrarily large circular loop antenna
Electronically reconfigurable reflectarrays with nematic liquid crystals
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- Author(s): B. Rembold and O. Koch
- Source: Electronics Letters, Volume 42, Issue 16, p. 900 –902
- DOI: 10.1049/el:20061596
- Type: Article
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For efficient amplification of broadband multicarrier signals a circuit configuration combining LINC and EER is proposed. The amplified lowpass part of the signal envelope is taken as the supply voltage for two nonlinear RF amplifiers. Their inputs are fed with signals at a centre frequency, the phases of which contain in addition to the signal phase a further phase difference. The cosine of this difference is proportional to the signal envelope divided by the above-mentioned lowpass part of the envelope. The sum of the amplifier outputs returns the desired signal. The method is described and the feasibility using a typical OFDM modulation scheme is demonstrated.
CLIER – combination of LINC and EER method
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- Author(s): K.S. Berezowski
- Source: Electronics Letters, Volume 42, Issue 16, p. 902 –903
- DOI: 10.1049/el:20061288
- Type: Article
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A novel logic design style for negative differential resistance (NDR) device based MOBILE circuits is introduced. Enjoying a reduced number of NDR devices, it eases circuit design, brings essential power savings, and should improve circuit manufacturability. - Author(s): S.-R. Kuang and J.-P. Wang
- Source: Electronics Letters, Volume 42, Issue 16, p. 904 –905
- DOI: 10.1049/el:20061812
- Type: Article
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A configurable error-compensation circuit for truncated parallel multipliers is proposed. The proposed circuit is capable of being configured to minimise either the mean error or the mean-square error. Experimental results show that proposed truncated multipliers not only improve error performance for multiply-accumulate applications but also reduce circuit area, propagation delay, and power consumption with respect to previous solutions. - Author(s): Y. He ; J. Tian ; X. Tan ; H. Min
- Source: Electronics Letters, Volume 42, Issue 16, p. 905 –906
- DOI: 10.1049/el:20060981
- Type: Article
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A new quasi-static adiabatic logic family called 2N-2N2P2D is presented. Compared with previous dynamic adiabatic logic, the quasi-static one makes great improvements in power saving by eliminating redundant capacitive node charge/discharge and in compatibility with conventional CMOS circuits. Comprehensive circuit simulations show that about 40% power saving can be achieved compared to the 2N-2N2D logic, and up to 70% compared to conventional CMOS logic.
Compact binary logic circuits design using negative differential resistance devices
Low-error configurable truncated multipliers for multiply-accumulate applications
Quasi-static adiabatic logic 2N-2N2P2D family
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- Author(s): K. Mei ; N. Zheng ; H. van de Wetering
- Source: Electronics Letters, Volume 42, Issue 16, p. 907 –908
- DOI: 10.1049/el:20061551
- Type: Article
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A highly pipelined line-based one-level 2D discrete wavelet transform (DWT) VLSI design is proposed using two line-FIFOs in 5/3 wavelet type and performing with input speed up to 2 samples/cycle. Furthermore, a recursive multi-level wavelet decomposition architecture using a dual buffer scheme is proposed to reduce the memory for wavelet coefficients to 1/4 Tile size. The two proposals allow for a 2D DWT architecture for JPEG2000 that is both high-speed and memory-efficient. - Author(s): A.M. El-Helw ; M. Moniri ; C.C. Chibelushi
- Source: Electronics Letters, Volume 42, Issue 16, p. 908 –910
- DOI: 10.1049/el:20061290
- Type: Article
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A new pattern classification approach based on multi-user communication techniques is proposed for improving multi-class learning performance. The spreading gain of code division multiple access is used instead of the coding gain of error-correcting output codes to increase classification accuracy. Results show that spread spectrum codes give better classification accuracy than error-correcting output codes up to 14.25%.
High-speed and memory-efficient VLSI design of 2D DWT for JPEG2000
Multi-class pattern learning using spread spectrum codes
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- Author(s): Q.-P. Li ; F. Ding ; P. Fang
- Source: Electronics Letters, Volume 42, Issue 16, p. 910 –912
- DOI: 10.1049/el:20061157
- Type: Article
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An optical displacement sensor, utilising the triangular method, linear CCD and a real-time processing circuit with no microprocessors involved, is presented. Theoretical analysis and experiments were carried out. Results show that the sensor has a measurement range of 0.2 rad, high linearity of 0.1% FSO, and high sampling rate of 50 kHz. - Author(s): X.-S. Wu ; W.-Y. Chen ; X.-L. Zhao ; W.-P. Zhang
- Source: Electronics Letters, Volume 42, Issue 16, p. 912 –913
- DOI: 10.1049/el:20061479
- Type: Article
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A type of micromachined rotating gyroscope with an electromagnetically levitated rotor is proposed. The working mechanism and the fabrication method based on MEMS technology of micromachined gyroscopes are described. The experiment showed that the vacuum package can increase the rotating speed of the rotor (diameter, 2.2 mm; thickness, 20 µm) from 800 to 4000 rpm. Possible reasons that resist further increase of rotating speed are air slip damping and electromagnetic damping. Sensing precision of 3°/s was obtained in the experiment.
Flash CCD laser displacement sensor
Micromachined rotating gyroscope with electromagnetically levitated rotor
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- Author(s): J.-S. Paek ; B. Park ; S. Hong
- Source: Electronics Letters, Volume 42, Issue 16, p. 913 –915
- DOI: 10.1049/el:20061209
- Type: Article
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A 3–5 GHz ultra-wideband CMOS low-noise amplifier fabricated using 0.18 µm CMOS process is presented. To achieve wideband characteristics, a two-frequency matching method for input matching is proposed. A cutoff-frequency (fT) doubler using Darlington-pair is employed to achieve high gain from 2.4 to 5.4 GHz. The LNA achieves an average gain of 21 dB, input return loss less than −10 dB, and a noise figure of 2.85–4.5 dB at a power consumption of 23 mW. The input 1 dB gain compression point (P1 dB) and IIP3 are −22 and −14 dBm at 4 GHz, respectively. - Author(s): A. Würtenberger ; P. Rosinger ; B.M. Al-Hashimi ; K. Chakrabarty
- Source: Electronics Letters, Volume 42, Issue 16, p. 915 –917
- DOI: 10.1049/el:20061556
- Type: Article
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The main factors contributing to the cost of system-on-a-chip (SOC) manufacturing tests are the required number of tester pins, the test application time, the tester memory requirements and the area overhead required by the test resources. These factors contribute with different weight, depending on the cost model of each SOC. Several methods have recently been proposed to optimise each of these factors, however none of the existing methods employs an objective function derived from the actual cost model of each product. Proposed is a genetic algorithm-based test cost optimisation method, which enables the test designer to target directly the solutions matching the test cost model specific to each SOC. - Author(s): H.H. Chung ; U. Lyles ; T. Copani ; B. Bakkaloglu ; S. Kiaei
- Source: Electronics Letters, Volume 42, Issue 16, p. 917 –919
- DOI: 10.1049/el:20061041
- Type: Article
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A frequency modulated continuous-wave RF synthesiser based on a bandpass ΣΔ (BPΣΔ) direct digital frequency synthesised reference clock is presented. The synthesiser is fabricated using 0.13 µm CMOS process and measurement results show that, at the RF centre frequency of 2.3747 GHz, the chirp signal with chirp-rate of 10 kHz has a frequency linearity of 1% for frequency deviations up to 102 MHz. The measured phase noise of the radar synthesiser is −104 dBc at 1 MHz offset frequency. - Author(s): S.-H. Yen and Y.-S. Lin
- Source: Electronics Letters, Volume 42, Issue 16, p. 919 –920
- DOI: 10.1049/el:20061235
- Type: Article
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A low-power-consumption (26.93 mW) 32 GHz (Ka-band) low noise amplifier (LNA) using standard 0.18 µm CMOS technology is reported. To achieve sufficient gain, this LNA is composed of three cascaded common-source stages. The output of each stage is loaded with a bandpass (or a highpass) combination of L and C to provide parallel resonance, i.e. to maximise the gain, at the design frequency. This LNA achieved input return loss (S11) of −13.3 dB, output return loss (S22) of −13.4 dB, forward gain (S21) of 10.2 dB and reverse isolation (S12) of −19.1 dB at 32 GHz. This LNA consumed only a small DC power of 26.93 mW. The chip area is only 740×500 µm, excluding the test pads.
CMOS LNA with Darlington-pair for UWB systems
Cost model driven test resource partitioning for SoCs
Frequency modulated bandpass ΣΔ chirp synthesiser for sensor applications
Ka-band low noise amplifier using standard 0.18 µm CMOS technology
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- Author(s): D. Bucci ; J. Grelin ; E. Ghibaudo ; J.-E. Broquin
- Source: Electronics Letters, Volume 42, Issue 16, p. 920 –921
- DOI: 10.1049/el:20061450
- Type: Article
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The realisation and characterisation of periodic segmented waveguides made by Ag+/Na+ ion-exchange on glass is presented. In particular, the averaging effects provided by the segmentation are analysed using the measurement of the cutoff wavelengths of the fundamental mode. Numerical calculations are used to evaluate the equivalent index contrast of a continuous waveguide from cutoff wavelength. It is found that the model predicting the index averaging effect of periodically segmented waveguides is valid if the duty cycle of the segmented waveguide is corrected by a term that takes into account the longitudinal ion diffusion.
Experimental validation of simple model for ion-exchanged periodically segmented waveguides
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- Author(s): T.J. Badcock ; H.Y. Liu ; K.M. Groom ; C.Y. Jin ; M. Gutiérrez ; M. Hopkinson ; D.J. Mowbray ; M.S. Skolnick
- Source: Electronics Letters, Volume 42, Issue 16, p. 922 –923
- DOI: 10.1049/el:20061487
- Type: Article
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The combination of a high-growth-temperature GaAs spacer layer and p-type modulation doping has been utilised to obtain a low-threshold-current-density, high-temperature-stability 1.3 µm InAs/GaAs quantum-dot laser. A room-temperature threshold current density of 48 A/cm2 and a negative characteristic temperature over the temperature range from −50 to 40°C is achieved for a five-layer device with as-cleaved facets. - Author(s): M. Hopkinson ; C.Y. Jin ; H.Y. Liu ; P. Navaretti ; R. Airey
- Source: Electronics Letters, Volume 42, Issue 16, p. 923 –924
- DOI: 10.1049/el:20061325
- Type: Article
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The quaternary GaInNAs barrier layer was used to improve the performance of 1.3 µm GaInNAs single quantum well lasers grown by MBE. A record low threshold current density of 178 A/cm2 and a record low transparent current density of 63 A/cm2 were achieved by a ridge waveguide laser with emission at 1336 nm. - Author(s): J.S. Gustavsson ; Y.Q. Wei ; M. Sadeghi ; S.M. Wang ; A. Larsson
- Source: Electronics Letters, Volume 42, Issue 16, p. 925 –926
- DOI: 10.1049/el:20061517
- Type: Article
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Uncooled 10 Gbit/s operation of high-T0 ridge waveguide 1.3 µm GaInNAs lasers at ambient temperatures as high as 110°C is demonstrated. The low temperature sensitivity enables use of a constant modulation voltage to obtain clear open eyes with an extinction ratio exceeding 5 dB. - Author(s): A. Rutz ; V. Liverini ; D.J.H.C. Maas ; B. Rudin ; A.-R. Bellancourt ; S. Schön ; U. Keller
- Source: Electronics Letters, Volume 42, Issue 16, p. 926 –927
- DOI: 10.1049/el:20061793
- Type: Article
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A passively modelocked GaInNAs vertical-external-cavity surface-emitting laser (VECSEL) is demonstrated for the first time. The VECSEL was optically pumped using an 808 nm semiconductor diode laser. An intracavity GaInNAs semiconductor saturable absorber mirror was used for stable self-starting modelocking and 57 mW of average output power was obtained at a centre wavelength of 1308 nm with a pulse repetition rate of 6.1 GHz and a pulse duration of 18.7 ps. - Author(s): P. Acedo ; H. Lamela ; S. Garidel ; C. Roda ; J.P. Vilcot ; G. Carpintero ; I.H. White ; K.A. Williams ; M. Thompson ; W. Li ; M. Pessa ; M. Dumitrescu ; S. Hansmann
- Source: Electronics Letters, Volume 42, Issue 16, p. 928 –929
- DOI: 10.1049/el:20061558
- Type: Article
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The study of a monolithic multisection modelocked laser for millimetre (mm)-wave radio-over-fibre (RoF) links is reported. The longitudinal mode spectrum is studied, as is the evolution of the mode distribution with the injected current in the different sections. A stable dual-mode operation regime is identified and used to demonstrate the possibility of using this device as a compact transmitter in RoF systems incorporating optoelectronic upconversion through the injection of an intermediate frequency signal in the absorber section, while the 40 GHz mm-wave carrier is injected in the gain section. Characterisation of the modelocked laser in an analogue transmission experiment shows a spurious free dynamic range of 65 dB-Hz2/3.
1.3 µm InAs/GaAs quantum-dot laser with low-threshold current density and negative characteristic temperature above room temperature
1.34 µm GaInNAs quantum well lasers with low room-temperature threshold current density
10 Gbit/s modulation of 1.3 µm GaInNAs lasers up to 110°C
Passively modelocked GaInNAs VECSEL at centre wavelength around 1.3 µm
Spectral characterisation of monolithic modelocked lasers for mm-wave generation and signal processing
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- Author(s): R. Boudot ; Y. Gruson ; N. Bazin ; E. Rubiola ; V. Giordano
- Source: Electronics Letters, Volume 42, Issue 16, p. 929 –931
- DOI: 10.1049/el:20061396
- Type: Article
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The design and measurement of a low-noise 9.5 GHz oscillator based on a high-Q whispering-gallery sapphire resonator operating at room temperature is described. The oscillator features a phase noise of −65 dBrad2/Hz at f=10 Hz off the carrier (slope 1/f 3), of −145 dBrad2/Hz at f=10 kHz (slope 1/f 2), and of −160 dBrad2/Hz at f100 kHz (white). Owing to the low phase noise, the measurement requires cross-correlation and some unusual solutions. - Author(s): V.P. Tran and A. Sibille
- Source: Electronics Letters, Volume 42, Issue 16, p. 931 –932
- DOI: 10.1049/el:20061564
- Type: Article
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A spatial multiplexing coherent scheme for pulse based ultra-wideband (UWB) multiple input multiple output (MIMO) radio is discussed and experimentally investigated. In favourable channel conditions, it is shown that a multiplexing rate equal to the number of transmitters may be obtained, at small or no signal-to-noise ratio penalty.
Design and measurement of low phase-noise X-band oscillator
Spatial multiplexing in UWB MIMO communications
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- Author(s): H. Tanaka ; O. Masugata ; D. Ohta ; A. Hasegawa ; P. Davis
- Source: Electronics Letters, Volume 42, Issue 16, p. 932 –934
- DOI: 10.1049/el:20061390
- Type: Article
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In multihop ad hoc networks that use conventional IEEE 802.11, long transient resynchronisation states are often generated when multiple IBSSs merge. A simple modification of the conventional timing synchronisation method is proposed to reduce such synchronisation bottlenecks. When the proposed modification is applied, a self-adaptive synchronisation ability is observed in simulations, which makes resynchronisation times much shorter and reduces energy consumption.
Fast, self-adaptive timing-synchronisation algorithm for 802.11 MANET
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- Author(s): J. Hu ; T.M. Duman ; E.M. Kurtas ; F. Erden
- Source: Electronics Letters, Volume 42, Issue 16, p. 934 –935
- DOI: 10.1049/el:20061640
- Type: Article
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Various coding and iterative decoding techniques are investigated for patterned media storage systems and significant performance enhancements are reported at very high recording densities. Coding gains with different island geometries are compared, which shows the promising direction of incorporating coding/iterative decoding with patterned media to achieve ultra-high recording densities.
Coding and iterative decoding for patterned media storage systems
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- Author(s): S. Choi
- Source: Electronics Letters, Volume 42, Issue 16, p. 936 –937
- DOI: 10.1049/el:20060932
- Type: Article
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A coupled Helmholtz machine for principal component analysis (PCA), where sub-machines are related through sharing some latent variables and associated weights, is presented. A wake-sleep PCA algorithm for training the coupled Helmholtz machine is then presented, showing that the algorithm iteratively determines principal eigenvectors of a data covariance matrix without any rotational ambiguity, in contrast to some existing methods that perform factor analysis or principal subspace analysis. The coupled Helmholtz machine provides a unified view of principal component analysis, including various existing algorithms as its special cases. The validity of the wake-sleep PCA algorithm is confirmed by numerical experiments.
Coupled Helmholtz machine for PCA
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- Author(s): Z.G. Lu ; P.J. Bock ; J.R. Liu ; F.G. Sun ; T.J. Hall
- Source: Electronics Letters, Volume 42, Issue 16, p. 937 –938
- DOI: 10.1049/el:20061599
- Type: Article
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An all-optical 1550 to 1310 nm wavelength converter based on a co-polarised dual-pumping four-wave mixing technique in a photonic crystal fibre is demonstrated. Using this novel method, an ultra-broadband wavelength converter with tunable range of over 340 nm has been achieved. - Author(s): C.-J. Chae and T. Jayasinghe
- Source: Electronics Letters, Volume 42, Issue 16, p. 938 –940
- DOI: 10.1049/el:20061717
- Type: Article
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Proposed is a new Ethernet passive optical network which employs multiple shared wavelength channels to efficiently utilise bandwidth based on a standard-compatible dynamic bandwidth allocation scheme. Its feasibility was experimentally demonstrated through a 1.25 Gbit/s upstream link using a reflective semiconductor optical amplifier. - Author(s): J.M. Fabrega and J. Prat
- Source: Electronics Letters, Volume 42, Issue 16, p. 940 –942
- DOI: 10.1049/el:20061844
- Type: Article
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A novel phase shift keying (PSK) receiver technique is proposed based on fuzzy logic digital signal processing and electronic-driven diversity. It achieves high tolerance to phase noise and feasible implementation with off-the-shelf electronic and optical components.
All-optical 1550 to 1310 nm wavelength converter
Bandwidth-efficient capacity upgrade of Ethernet passive optical network systems
Fuzzy logic data estimation based PSK receiver with time-switched phase diversity
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- Author(s): J.W. Raring ; L.A. Johansson ; E.J. Skogen ; M.N. Sysak ; H.N. Poulsen ; S.P. DenBaars ; L.A. Coldren
- Source: Electronics Letters, Volume 42, Issue 16, p. 942 –943
- DOI: 10.1049/el:20061368
- Type: Article
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Photonic receivers integrating unitravelling carrier (UTC) photodiodes with high saturation power/high gain semiconductor optical amplifiers (SOAs) are presented. The SOAs demonstrated up to 28 dB of gain with saturation output powers of up to 18.6 dBm, while the UTC photodiodes were capable of 40 Gbit/s operation under high photocurrent operation. The chip-coupled receiver sensitivity was better than −20 dBm at 40 Gbit/s. A high-flexibility quantum well intermixing and MOCVD regrowth integration method was used for device fabrication.
40 Gbit/s photonic receivers integrating UTC photodiodes with high- and low-confinement SOAs using quantum well intermixing and MOCVD regrowth
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- Author(s): L.H. Phuc ; C.S. Chae ; M.C. Lee ; S.W. Wang ; S.I. Kim ; G.H. Cho
- Source: Electronics Letters, Volume 42, Issue 16, p. 943 –945
- DOI: 10.1049/el:20061289
- Type: Article
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A new integrated zero-inductor-current detection circuit suitable for step-up DC–DC converters is presented. The detection circuit can correctly detect zero-inductor-current with a novel method. The method helps overcome difficulties in measuring online current from on-resistance of output PMOS switches. With its simplicity and independence from output PMOS switches, this circuit promises wide application in either single-output step-up DC–DC converters or single inductor multiple output (SIMO) step-up DC–DC converters with different control theories, and especially in discontinuous-conduction-mode (DCM) operation.
Integrated zero-inductor-current detection circuit for step-up DC–DC converters
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- Author(s): S. Lee
- Source: Electronics Letters, Volume 42, Issue 16, p. 945 –947
- DOI: 10.1049/el:20060894
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A new RF method based on the accurate extraction of the intrinsic transconductance and gate–source channel capacitance from measured S-parameters is proposed to determine the intrinsic cutoff frequency of sub-0.1 µm MOSFETs. Using the RF technique, the intrinsic cutoff frequency enhancement with the linear dependence on 1/Lpoly2 is observed in sub-0.1 µm bulk n-MOSFETs. It is also observed that the reduction of extrinsic charging time is the most important to increase the measured cutoff frequency in sub-0.1 µm CMOS devices.
Accurate extraction and analysis of intrinsic cutoff frequency of sub-0.1 µm MOSFETs
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- Author(s): A. Cichocki and R. Zdunek
- Source: Electronics Letters, Volume 42, Issue 16, p. 947 –948
- DOI: 10.1049/el:20060983
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A multilayer approach to nonnegative matrix factorisation algorithms is proposed. It considerably improves their performance; especially if a problem is ill-conditioned, or data are badly scaled, and projected gradient algorithms are used. This is fully confirmed by extensive simulations with diverse types of data in application to blind source separation.
Multilayer nonnegative matrix factorisation
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- Author(s): Y.-T. Chen and H.L. Kao
- Source: Electronics Letters, Volume 42, Issue 16, p. 948 –950
- DOI: 10.1049/el:20061216
- Type: Article
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p.
948
–950
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Highly sensitive surface acoustic wave (SAW) humidity sensors were fabricated by spin-coating polyvinyl-alcohol (PVA) thin film on the SAW resonators. The transmission properties of the SAW sensor, including centre frequency and insertion loss, were investigated at a relative humidity ranging from 30 to 90%. The results justify the suitability for the PVA film coated SAW resonators in the application of sensing humidity at a higher relative humidity.
Humidity sensors made on polyvinyl-alcohol film coated SAW devices
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- Author(s): K. Schuenemann and A. Serebryannikov
- Source: Electronics Letters, Volume 42, Issue 16, page: 950 –950
- DOI: 10.1049/el:20062181
- Type: Article
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950
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- Author(s): H. Lim ; J. Buckley ; A. Chong ; F.W. Wise
- Source: Electronics Letters, Volume 42, Issue 16, page: 950 –950
- DOI: 10.1049/el:20062180
- Type: Article
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p.
950
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- Author(s): B. Enning
- Source: Electronics Letters, Volume 42, Issue 16, page: 950 –950
- DOI: 10.1049/el:20062182
- Type: Article
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p.
950
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- Author(s): J. Kim ; C.S. Cho ; J.W. Lee
- Source: Electronics Letters, Volume 42, Issue 16, page: 950 –950
- DOI: 10.1049/el:20062183
- Type: Article
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p.
950
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Erratum for ‘Ridge coaxial non-periodic cavity with special frequency spectrum’
Erratum for ‘Fibre-based source of femtosecond pulses tunable from 1.0 to 1.3 microns’
Erratum for ‘Electrical waveguide in Mach-Zehnder modulator integrated into ring resonator for optical signal processing’
Erratum for ‘5.2 GHz notched ultra-wideband antenna using slot-type SRR’
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