Online ISSN
1350-911X
Print ISSN
0013-5194
Electronics Letters
Volume 9, Issue 17, 23 August 1973
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 9, Issue 17
23 August 1973
Influence of the extraction order of attenuation poles in a lowpass filter
- Author(s): J. Neirynck ; N.C. Bui ; C. Tran
- Source: Electronics Letters, Volume 9, Issue 17, p. 381 –382
- DOI: 10.1049/el:19730283
- Type: Article
- + Show details - Hide details
-
p.
381
–382
(2)
The choice of the extraction order of the attenuation poles in the classical synthesis of a ladder filter will influence the dispersion of the element values and the sensitivity of the transmittance s12 to the element values. The purpose of the letter is to investigate these two characteristics by an exhaustive study of a typical example.
Unsupervised learning of the Kalman filter
- Author(s): R.L.T. Hampton
- Source: Electronics Letters, Volume 9, Issue 17, p. 383 –384
- DOI: 10.1049/el:19730284
- Type: Article
- + Show details - Hide details
-
p.
383
–384
(2)
It is the purpose of the letter to provide a short description of a general recursive method for learning the optimal stationary Kalman filter Kopt, when the plant and measurement noise covariance kernels, denoted by Q and R, respectively, are unknown. Experimental verification that confirms the theoretical expectations is presented.
Symbol set for regenerated communications
- Author(s): J.T. Harvey
- Source: Electronics Letters, Volume 9, Issue 17, p. 384 –385
- DOI: 10.1049/el:19730285
- Type: Article
- + Show details - Hide details
-
p.
384
–385
(2)
The letter describes a symbol set which is well suited to multiregenerated digital transmission. Highly redundant timing makes practicable a previously developed method of low-frequency phase-noise suppression. A 100 Mbit/s experimental self-timed regenerator has been implemented, and some experimental results are presented.
CODYMOS frequency dividers achieve low power consumption and high frequency
- Author(s): H. Oguey and C. Vittoz
- Source: Electronics Letters, Volume 9, Issue 17, p. 386 –387
- DOI: 10.1049/el:19730286
- Type: Article
- + Show details - Hide details
-
p.
386
–387
(2)
Frequency dividers made with complementary dynamic m.o.s. (CODYMOS) circuits require only a small number of transistors and interconnections, a single input signal and operate with a minimum number of successive transitions. This leads to a drastic reduction in stray capacitance and current consumption, and to an increase in speed. A simplified analysis of these quantities is given for binary and ternary dividers. An experimental circuit, integrated with silicon-gate technology, operates from a 1.35 V battery, divides by 3 up to an input frequency in excess of 20 MHz and draws a current of 0.4 μA/MHz.
Effects of diode-package cutoff frequency on TRAPATT operation
- Author(s): J.E. Carroll
- Source: Electronics Letters, Volume 9, Issue 17, p. 387 –388
- DOI: 10.1049/el:19730287
- Type: Article
- + Show details - Hide details
-
p.
387
–388
(2)
The cutoff frequency of two ideal types of package is considered, and is shown to limit the maximum rate of rise of voltage for triggering the TRAPATT mode in a commonly employed circuit. The letter also places the negative-inductance concept employed in the analysis on a mathematical foundation.
Attenuation in an elliptic waveguide
- Author(s): L. Lewin and A.M.B. Al-Hariri
- Source: Electronics Letters, Volume 9, Issue 17, p. 388 –389
- DOI: 10.1049/el:19730288
- Type: Article
- + Show details - Hide details
-
p.
388
–389
(2)
The formula for the anisotropic axial surface impedance, specified by Falciasecca et al. as necessary for agreement with the classical attenuation computation of Chu, gives an erroneous result for a much elongated ellipse. This error is attributed to the form of the asymptotic expansion of the radial Mathieu functions of the fourth kind that is used in the waveguide wall. Corrected expressions for the axial and transverse surface impedances and for the TE and TM mode attenuation are elaborated.
Radiation from a solid-state laser
- Author(s): G.A. Hockham
- Source: Electronics Letters, Volume 9, Issue 17, p. 389 –391
- DOI: 10.1049/el:19730289
- Type: Article
- + Show details - Hide details
-
p.
389
–391
(3)
A correlation between the measured and theoretical radiation patterns of a solid-state laser gives additional confirmation of the laser parameters. It is shown that, by virtue of the laser geometry, an integration of the aperture field alone gives incorrect results, and an additional factor exists, which must be included to obtain accurate theoretical results.
Automatic classification of mass spectra by means of digital learning nets
- Author(s): T.J. Stonham ; I. Aleksander ; M. Camp ; M.A. Shaw ; W.T. Pike
- Source: Electronics Letters, Volume 9, Issue 17, p. 391 –394
- DOI: 10.1049/el:19730290
- Type: Article
- + Show details - Hide details
-
p.
391
–394
(4)
The method of pattern recognition by means of s.l.a.m. (stored-logic adaptive modules) has been applied to the automatic classification of mass spectra into broad chemical groups, with zero-error results.
Improved lightning-earth flash counter
- Author(s): R.B. Anderson ; H.R. van Niekerk ; J.J. Gertenbach
- Source: Electronics Letters, Volume 9, Issue 17, p. 394 –395
- DOI: 10.1049/el:19730291
- Type: Article
- + Show details - Hide details
-
p.
394
–395
(2)
An improved counter for lightning flashes to earth has been developed and tested. Results indicate that this counter registers significantly less cloud flash activity than other counters available; the improvement being due to a particular choice of peak response frequency for the counter's input circuit.
Feedback-rate control in fading channels
- Author(s): R. Srinivasan
- Source: Electronics Letters, Volume 9, Issue 17, p. 395 –396
- DOI: 10.1049/el:19730292
- Type: Article
- + Show details - Hide details
-
p.
395
–396
(2)
A feedback-rate control scheme recently proposed by Cavers for the incoherent detection of binary signals transmitted over a slowly fading Rayleigh channels is shown to be optimum for coherent systems.
Overlapping-gate buried-channel charge-coupled devices
- Author(s): A.M. Mohsen ; R. Bower ; T.C. McGill ; T. Zimmerman
- Source: Electronics Letters, Volume 9, Issue 17, p. 396 –398
- DOI: 10.1049/el:19730293
- Type: Article
- + Show details - Hide details
-
p.
396
–398
(3)
In this letter the advantages of the overlapping-gate buried-channel charged-coupled devices over the 3-phase metal-gate and resistive-gate buried-channel c.c.d. are discussed and pertinent design considerations for the overlapping-gate c.c.d.s are presented.
Reduction of noise in high-power crossed-field amplifiers
- Author(s): N.S. Nicholls ; L. Damon ; B.P. Scoffield
- Source: Electronics Letters, Volume 9, Issue 17, p. 398 –399
- DOI: 10.1049/el:19730294
- Type: Article
- + Show details - Hide details
-
p.
398
–399
(2)
The letter describes a method of reducing the broadband noise of a high-power injected-beam crossed-field amplifier by means of a nonuniform magnetic field in the electron-gun region. The noise reduction achieved is some tens of decibels, and also results in improvements in other characteristics of the tube.
Dielectric anisotropy of new liquid-crystal mixtures and its effect on dynamic scattering
- Author(s): G. Elliott ; D. Harvey ; M.G. Williams
- Source: Electronics Letters, Volume 9, Issue 17, p. 399 –401
- DOI: 10.1049/el:19730295
- Type: Article
- + Show details - Hide details
-
p.
399
–401
(3)
New liquid crystalline compounds with a high negative dielectric anisotropy and wide temperature range have been prepared, and their dynamic-scattering properties compared with other materials. These compounds give a slightly lower threshold voltage, followed by a rapid increase of dynamic scattering above threshold, and should provide improved performance in low-voltage display devices.
Sputtered-glass optical waveguides
- Author(s): C.W. Pitt
- Source: Electronics Letters, Volume 9, Issue 17, p. 401 –403
- DOI: 10.1049/el:19730296
- Type: Article
- + Show details - Hide details
-
p.
401
–403
(3)
Research into low-loss optical-frequency planar waveguides has produced a technique for controlling the propagation characteristics during the sputter-deposition process. The basis of the technique is discussed, and some results are given.
Analysis of RLC gyrator networks
- Author(s): F. Anday
- Source: Electronics Letters, Volume 9, Issue 17, p. 403 –404
- DOI: 10.1049/el:19730297
- Type: Article
- + Show details - Hide details
-
p.
403
–404
(2)
A signal-flowgraph approach to the problem of analysis of networks containing resistors, capacitors, inductors and gyrators is given.
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
