Online ISSN
1350-911X
Print ISSN
0013-5194
Electronics Letters
Volume 10, Issue 16, 8 August 1974
Volumes & issues:
-
Volume 59 (2023)
-
Volume 58 (2022)
-
Volume 57 (2021)
-
Volume 56 (2020)
-
Volume 55 (2019)
-
Volume 54 (2018)
-
Volume 53 (2017)
-
Volume 52 (2016)
-
Volume 51 (2015)
-
Volume 50 (2014)
-
Volume 49 (2013)
-
Volume 48 (2012)
-
Volume 47 (2011)
-
Volume 46 (2010)
-
Volume 45 (2009)
-
Volume 44 (2008)
-
Volume 43 (2007)
-
Volume 42 (2006)
-
Volume 41 (2005)
-
Volume 40 (2004)
-
Volume 39 (2003)
-
Volume 38 (2002)
-
Volume 37 (2001)
-
Volume 36 (2000)
-
Volume 35 (1999)
-
Volume 34 (1998)
-
Volume 33 (1997)
-
Volume 32 (1996)
-
Volume 31 (1995)
-
Volume 30 (1994)
-
Volume 29 (1993)
-
Volume 28 (1992)
-
Volume 27 (1991)
-
Volume 26 (1990)
-
Volume 25 (1989)
-
Volume 24 (1988)
-
Volume 23 (1987)
-
Volume 22 (1986)
-
Volume 21 (1985)
-
Volume 20 (1984)
-
Volume 19 (1983)
-
Volume 18 (1982)
-
Volume 17 (1981)
-
Volume 16 (1980)
-
Volume 15 (1979)
-
Volume 14 (1978)
-
Volume 13 (1977)
-
Volume 12 (1976)
-
Volume 11 (1975)
-
Volume 10 (1974)
-
Volume 9 (1973)
-
Volume 8 (1972)
-
Volume 7 (1971)
-
Volume 6 (1970)
-
Volume 5 (1969)
-
Volume 4 (1968)
-
Volume 3 (1967)
-
Volume 2 (1966)
-
Volume 1 (1965)
Volume 10, Issue 16
8 August 1974
Broadband cryogenic parametric amplifier operating at 11.6 GHz
- Author(s): J. Thirlwell ; J. McPherson ; R.R. Bell
- Source: Electronics Letters, Volume 10, Issue 16, p. 329 –330
- DOI: 10.1049/el:19740260
- Type: Article
- + Show details - Hide details
-
p.
329
–330
(2)
A machine-cooled cryogenic parametric amplifier that operates at 20 K is described. The 2-stage amplifier has a 0.5 dB bandwidth of 600 MHz at 20 dB gain and an effective input noise temperature in the range 47–51 K over the frequency band of 11.3 to 11.9 GHz
Reply to ‘Comment on Determination of system frequency response direct from crosscorrelation functions of sinusoidal signals’
- Author(s): J.D. Lamb
- Source: Electronics Letters, Volume 10, Issue 16, p. 330 –331
- DOI: 10.1049/el:19740261
- Type: Article
- + Show details - Hide details
-
p.
330
–331
(2)
Structural oscillation in a cholesteric-nematic mixture
- Author(s): J.C. Varney and L.E. Davis
- Source: Electronics Letters, Volume 10, Issue 16, p. 331 –332
- DOI: 10.1049/el:19740262
- Type: Article
- + Show details - Hide details
-
p.
331
–332
(2)
The amplitude modulation of the optical transmission through a cholesteric-nematic phase-change film is explained in terms of the oscillation of the helical structure discussed by Parsons and Hayes. This behaviour is seen with both tone-burst and e.w. excitation, and may be important in displays based on the fast-phase-change erect.
Electron velocity in n GaAs at high electric fields
- Author(s): P.A. Houston and A.G.R. Evans
- Source: Electronics Letters, Volume 10, Issue 16, p. 332 –333
- DOI: 10.1049/el:19740263
- Type: Article
- + Show details - Hide details
-
p.
332
–333
(2)
The velocity of electrons in n GaAs has been measured for electric fields in the range 20–55 kV/cm by the time-of-flight technique. The velocity was found to decrease slowly wlth increasing electric field, and is 8.09×106 cm/s at 55 kV/cm.
Synthesis of transfer functions by signal-flow graphs
- Author(s): S. Can
- Source: Electronics Letters, Volume 10, Issue 16, p. 333 –334
- DOI: 10.1049/el:19740264
- Type: Article
- + Show details - Hide details
-
p.
333
–334
(2)
A new procedure is given for the synthesis of voltage transfer functions. It is shown that the well known circuits of Lovering and Brugler can also be derived easily by this method. It is also indicated that a simplification can be obtained in the RC:-RC decomposition method. which is in the proposed procedure.
Preparation of water-free silica-based optical-fibre waveguide
- Author(s): D.N. Payne and W.A. Gambling
- Source: Electronics Letters, Volume 10, Issue 16, p. 335 –336
- DOI: 10.1049/el:19740265
- Type: Article
- + Show details - Hide details
-
p.
335
–336
(2)
A technique is described whereby the hydroxyl absorption bands of the new phosphosilicate-core optical-fibre waveguide, which arise from impurities in the cladding, can be largely eliminated. The resulting fibre has ultralow loss over the entire wavelength range 0.4–1.1 μm.
A.C.-coupled probe technique for very-low-frequency operation
- Author(s): R.W.J. Barker and B.L. Hart
- Source: Electronics Letters, Volume 10, Issue 16, p. 336 –337
- DOI: 10.1049/el:19740266
- Type: Article
- + Show details - Hide details
-
p.
336
–337
(2)
The use of a junction-f.e.t. matched pair, functioning as a self-biased source follower, bootstrapped by the operational amplifier voltage follower it drives, facilitates the design of an a.c.-coupled oscilloscope probe with maximised input impedance. Consequently, a lower-cutoff frequency of less than 3 Hz is feasible with input coupling components that are not incompatible with current i.c. design practice.
Ring-structured adaptable logic circuit for the classification of binary vectors
- Author(s): Manissa J. Dobrée Wilson and I. Aleksander
- Source: Electronics Letters, Volume 10, Issue 16, p. 337 –339
- DOI: 10.1049/el:19740267
- Type: Article
- + Show details - Hide details
-
p.
337
–339
(3)
A ring structure made of 8 bit random-access memory (r.a.m.) elements is described. The r.a.m.s. are used as variable-function logic devices. Several results are presented relating the stored functions to the overall system function. These include the detection of unique, isolated ‘1’ bits (uniqueness) and unique strings of ‘1’ bits (connectedness) in a binary vector.
Sequence recognition with an adaptive-logic network
- Author(s): M.C. Fairhurst and I. Aleksander
- Source: Electronics Letters, Volume 10, Issue 16, p. 339 –340
- DOI: 10.1049/el:19740268
- Type: Article
- + Show details - Hide details
-
p.
339
–340
(2)
Dynamic nets of random-access memory elements used in an adaptive-logic mode and whose output is fed back to be ORed with the input are used for recognising input sequences. Experimental results are presented, and the conditions required for success are discussed.
Further properties of linear binary anticodes
- Author(s): P.G. Farrell and A. Farrag
- Source: Electronics Letters, Volume 10, Issue 16, p. 340 –341
- DOI: 10.1049/el:19740269
- Type: Article
- + Show details - Hide details
-
p.
340
–341
(2)
A previously described puncturing method of generating low-efficiency. high-redundancy. optimum and near optimum error-correcting codes is extended to include higher-efficiency codes. Several examples of new optimum codes are given.
wo-dimensional finite element simulation of semiconductor devices
- Author(s): J.J. Barnes and R.J. Lomax
- Source: Electronics Letters, Volume 10, Issue 16, p. 341 –343
- DOI: 10.1049/el:19740270
- Type: Article
- + Show details - Hide details
-
p.
341
–343
(3)
Semiconductor-device modelling in two dimensions by the finite-element method is described. Results of application to a GaAs m.e.s.f.e.t. are given. Negative differential drain conductance is observed.
Fast modulo-number Hadamard transformer for a sequency-division multiplexer
- Author(s): E. Insam
- Source: Electronics Letters, Volume 10, Issue 16, p. 343 –344
- DOI: 10.1049/el:19740271
- Type: Article
- + Show details - Hide details
-
p.
343
–344
(2)
The implementation of a fast Hadamard transform that operates in the ring of p elements is described with particular applications in an adaptive sequency-division multiplexer. Maximum hardware efficiency is obtained if p is of the form 2r − 1 for any r, and the data to be multiplexed are codcd in 1s-complement arithmetic. The advantage of transforming in a finite ring is that no extra bits are required to store the data as for real-number transforms.
Identification of the Volterra kernels of a process containing single-valued nonlinearities
- Author(s): R.V. Webb
- Source: Electronics Letters, Volume 10, Issue 16, p. 344 –346
- DOI: 10.1049/el:19740272
- Type: Article
- + Show details - Hide details
-
p.
344
–346
(3)
An analysis is presented that shows how the Volterra kernels of a continuous single-valued nonlinear process may be identified from measured harmonic frequency-response data. The analysis facilitates the systematic formulation of identification equations for nonlinearities, which can be approximated by power series, without restricting the order of the approximation.
GaAs-GaAlAs anti-Stokes light convertor
- Author(s): H. Beneking ; H. Schul ; G. Mischel ; G. Schul ; A. Gattung
- Source: Electronics Letters, Volume 10, Issue 16, p. 346 –347
- DOI: 10.1049/el:19740273
- Type: Article
- + Show details - Hide details
-
p.
346
–347
(2)
A multilayer heterojunction device has been manufactured and used for efficient anti-Stokes light conversion. The device consists of six layers: p GaAs, n GaAs, n GaxAl1−xAs, p GayAl1−yAs, p GaxAl1−xAs and p GaAs, essentially forming a GaAs photodiode coupled with a GaAlAs l.e.d. Avalanche multiplication of photoexcited carriers is used to increase the l.e.d. driving current.
Multilevel single-error-correcting codes
- Author(s): P.G. Farrell and Z. Al-Bandar
- Source: Electronics Letters, Volume 10, Issue 16, p. 347 –348
- DOI: 10.1049/el:19740274
- Type: Article
- + Show details - Hide details
-
p.
347
–348
(2)
A class of pseudocyclic multilevel single-error-correcting code is described, and an example of a 5-level code is given. Some of these codes have parameters. such as block length, number of parity-check digits etc., which are unrealisable with strictly cyclic codes. Pseudocyclic codes share the mathematical structure of cyclic codes, and thus are relatively simple to implement in practical form
Erratum: Fast b.c.d. multiplier
- Author(s): D.P. Agrawal
- Source: Electronics Letters, Volume 10, Issue 16, page: 348 –348
- DOI: 10.1049/el:19740275
- Type: Article
- + Show details - Hide details
-
p.
348
(1)
Erratum: Feedback stability of open-loop unstable systems: contraction-mapping approach
- Author(s): D.H. Owens
- Source: Electronics Letters, Volume 10, Issue 16, page: 348 –348
- DOI: 10.1049/el:19740276
- Type: Article
- + Show details - Hide details
-
p.
348
(1)
Most viewed content for this Journal
Article
content/journals/el
Journal
5
Most cited content for this Journal
-
Extreme multistability in a memristive circuit
- Author(s): Bo-Cheng Bao ; Quan Xu ; Han Bao ; Mo Chen
- Type: Article
-
Absorptive frequency selective surface using parallel LC resonance
- Author(s): Qiang Chen ; Liguo Liu ; Liang Chen ; Jiajun Bai ; Yunqi Fu
- Type: Article
-
Partial spectral search-based DOA estimation method for co-prime linear arrays
- Author(s): Fenggang Sun ; Peng Lan ; Bin Gao
- Type: Article
-
Experimental verification of on-chip CMOS fractional-order capacitor emulators
- Author(s): G. Tsirimokou ; C. Psychalinos ; A.S. Elwakil ; K.N. Salama
- Type: Article
-
54 Gbit/s OOK transmission using single-mode VCSEL up to 2.2 km MMF
- Author(s): G. Stepniak ; A. Lewandowski ; J.R. Kropp ; N.N. Ledentsov ; V.A. Shchukin ; N. Ledentsov Jr. ; G. Schaefer ; M. Agustin ; J.P. Turkiewicz
- Type: Article
