Online ISSN
1350-911X
Print ISSN
0013-5194
Electronics Letters
Volume 14, Issue 7, 30 March 1978
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 14, Issue 7
30 March 1978
Planar indium-diffused lead telluride detector arrays
- Author(s): C.H. Gooch ; H.A. Tarry ; R.C. Bottomley ; M.G. Astles ; B.J. Waldock
- Source: Electronics Letters, Volume 14, Issue 7, p. 209 –210
- DOI: 10.1049/el:19780141
- Type: Article
- + Show details - Hide details
-
p.
209
–210
(2)
Lead telluride detector arrays have been made by diffusing indium into arsenic-doped p-type lead telluride. Planar devices have a resistance-area product R0A ≃ 10 Ω cm2 at 180 K and a black body detectivity (D* 500 K) ≃ 6×109 cm Hz½ W−1 a typical array showing a responsivity variation of ±20%. The temperature variation of R0A is consistent with an abrupt junction model with an Auger-limited lifetime.
On symmetrical corrugated reflectors with zero depolarisation
- Author(s): G.L. James and B.MacA. Thomas
- Source: Electronics Letters, Volume 14, Issue 7, p. 210 –211
- DOI: 10.1049/el:19780142
- Type: Article
- + Show details - Hide details
-
p.
210
–211
(2)
Depolarisation by symmetrical reflector antennas can theoretically be eliminated by the use of anisotropic reflectors. It is shown, however, by using both a moment method solution and experimental results, that a small planar corrugated surface falls well short of achieving this objective.
High-speed generation of long m-sequences
- Author(s): G.H. Tomlinson and P. Galvin
- Source: Electronics Letters, Volume 14, Issue 7, p. 212 –213
- DOI: 10.1049/el:19780143
- Type: Article
- + Show details - Hide details
-
p.
212
–213
(2)
A method was recently described by Arvillias and Maritsas for high-speed generation of m-sequences having characteristic polynomials of the form 1 ⊕ xq ⊕ xp. Here the method is extended to generate m-sequences with characteristic polynomials having more than three terms.
Anti-hangup system for p.s.k. tracking loops
- Author(s): C.P. Ashall and P.A. Matthews
- Source: Electronics Letters, Volume 14, Issue 7, p. 213 –214
- DOI: 10.1049/el:19780144
- Type: Article
- + Show details - Hide details
-
p.
213
–214
(2)
The design of an anti-hangup system for phase shift keyed (p.s.k.) signal tracking systems is reported. Digital simulation studies show that up to an order of magnitude decrease in phase acquisition time may be achieved.
Semiconductor junction transceiver for fibre optic communication
- Author(s): J.J. Geddes ; P.E. Petersen ; D. Chen ; K.P. Koeneman
- Source: Electronics Letters, Volume 14, Issue 7, p. 214 –216
- DOI: 10.1049/el:19780145
- Type: Article
- + Show details - Hide details
-
p.
214
–216
(3)
Measurements on three types of l.e.d.s show that these devices can be used as detectors as well as emitters. Hence these diodes can be used as semiconductor junction transceivers (s.j.t.s) in multiterminal data bus systems.
Aperture coupled stripline coupler
- Author(s): Mahesh Kumar and B.N. Das
- Source: Electronics Letters, Volume 14, Issue 7, p. 216 –217
- DOI: 10.1049/el:19780146
- Type: Article
- + Show details - Hide details
-
p.
216
–217
(2)
Analytical expressions for coupling between two striplines, coupled through small apertures in the form of narrow rectangular slot and circular hole, are derived. The experimental results are presented along with theoretical results.
A novel configuration for charge-coupled devices
- Author(s): Robert L. Carroll
- Source: Electronics Letters, Volume 14, Issue 7, p. 217 –219
- DOI: 10.1049/el:19780147
- Type: Article
- + Show details - Hide details
-
p.
217
–219
(3)
A novel configuration for the c.c.d. is presented which permits rapid matrix multiplication. One suggested application is matrix inversion by the product-form algorithm.
Bistatic radar measurements of ice-cloud reflectivities in the upper troposphere
- Author(s): R.L. Olsen and U.H.W. Lammers
- Source: Electronics Letters, Volume 14, Issue 7, p. 219 –221
- DOI: 10.1049/el:19780148
- Type: Article
- + Show details - Hide details
-
p.
219
–221
(3)
Results of 15.7 GHz bistatic radar measurements of scattering from ice clouds are presented and the vertical profiles of the reflectivity factor exceeded for small percentages of time inferred. The results have implications for terrestrial and earth-space communications systems sharing frequency bands above 10GHz and for earth-space systems utilising orthogonal polarisations to increase capacity.
On the sensitivity analysis of linear active networks
- Author(s): E.A. Laksberg
- Source: Electronics Letters, Volume 14, Issue 7, p. 221 –223
- DOI: 10.1049/el:19780149
- Type: Article
- + Show details - Hide details
-
p.
221
–223
(3)
For the sensitivity analysis of linear active networks in the frequency domain, an approach is presented which takes changes in transistor bias conditions into account. The approach is based on a preliminary LU-factorisation of the real part of the admittance matrix, and requires calculation of the d.c. node voltages. A simple numerical example is given.
On the optimum ratio of distance between wires to conductor radius of symmetrical star quad cable for digital signal transmission
- Author(s): N. Kojima ; M. Ohmura ; T. Fuchigami
- Source: Electronics Letters, Volume 14, Issue 7, page: 223 –223
- DOI: 10.1049/el:19780150
- Type: Article
- + Show details - Hide details
-
p.
223
(1)
Existence of an optimum ratio of distance-between-wires/conductor-radius for minimisation of symmetrical star quad cable loss, when the distance between wires is constant, is confirmed by calculated and measured results using symmetrical star quad cable in the high frequency domain, such as digital signal transmission.
Variation with height of the statistics of radar reflectivity due to hydrometeors
- Author(s): M.P.M. Hall and J.W.F. Goddard
- Source: Electronics Letters, Volume 14, Issue 7, p. 224 –225
- DOI: 10.1049/el:19780151
- Type: Article
- + Show details - Hide details
-
p.
224
–225
(2)
Statistics of radar reflectivity are presented as a function of height. The data were derived from 3-dimensional maps of radar reflectivity obtained with a 10 cm radar on the 25 m diameter aerial at Chilbolton in southern England. The way in which reflectivity varies with height is of considerable importance to those assessing possible interference between earth-to-satellite links and terrestrial links. The present results show some differences from the CCIR model now used for such planning purposes.
Design considerations for lowpass and highpass all-pole f.d.n.r. networks
- Author(s): R.E. Massara
- Source: Electronics Letters, Volume 14, Issue 7, p. 225 –226
- DOI: 10.1049/el:19780152
- Type: Article
- + Show details - Hide details
-
p.
225
–226
(2)
The specification of reactance dissipation factors and filter structure in prototype all-pole networks intended for realisation in f.d.n.r. form is considered. Results are presented to demonstrate the potential improvements in component spread and sensitivity that are possible with careful selection of capacitor loss factors and, in the case of odd-order networks, prototype topology.
Analysis of active networks using flow-graph technique
- Author(s): A. Cichocki and S. Osowski
- Source: Electronics Letters, Volume 14, Issue 7, p. 227 –228
- DOI: 10.1049/el:19780153
- Type: Article
- + Show details - Hide details
-
p.
227
–228
(2)
A simplified Coates flow-graph technique, applied to the analysis of an arbitrary active network, is presented. Flow-graph representations of building blocks of active networks are given, which permit construction of the graph from the given network. A flow-graph formula for the sensitivity investigation is also given.
Implementation of Winograd's algorithm in modular arithmetic for digital convolutions
- Author(s): N. Sridhar Reddy and V. Umapathi Reddy
- Source: Electronics Letters, Volume 14, Issue 7, p. 228 –229
- DOI: 10.1049/el:19780154
- Type: Article
- + Show details - Hide details
-
p.
228
–229
(2)
Implementation of Winograd's algorithm in modular arithmetic is proposed for error-free digital convolutions. It is shown that the Chinese remainder theorem can be gainfully employed to perform the convolution with parallel digital machines of shorter wordlength, thereby allowing higher speed with no increase in the total hardware.
Calculation of transmission coefficients for omega signals penetrating into sea water
- Author(s): P.J.D. Gething and A. Mobbs
- Source: Electronics Letters, Volume 14, Issue 7, p. 229 –230
- DOI: 10.1049/el:19780155
- Type: Article
- + Show details - Hide details
-
p.
229
–230
(2)
Approximate expressions for the transmission coefficients for v.l.f. waves (10.2–13.6 kHz) incident on an air-sea boundary give values in good agreement with those obtained by more elaborate methods of calculation.
Error bounds on stochastic approximates in discrete nonlinear dynamical systems
- Author(s): O. Ibidapo-Obe
- Source: Electronics Letters, Volume 14, Issue 7, p. 230 –231
- DOI: 10.1049/el:19780156
- Type: Article
- + Show details - Hide details
-
p.
230
–231
(2)
A mean-square error bound associated with gains utilised in stochastic approximation procedures is derived here. A specific bound is obtained for the case when the forcing function is a white noise process and the gain is specified.
Addendum to Fast algorithm for computing complex number-theoretic transforms
- Author(s): I.S. Reed and T.K. Truong
- Source: Electronics Letters, Volume 14, Issue 7, p. 231 –232
- DOI: 10.1049/el:19780157
- Type: Article
- + Show details - Hide details
-
p.
231
–232
(2)
Proof is given of a result previously stated without proof.
Erratum: Low temperature electroplated Au–SnNi–Au ohmic contacts on n type GaAs
- Author(s): W.M. Kelly and G.T. Wrixon
- Source: Electronics Letters, Volume 14, Issue 7, page: 232 –232
- DOI: 10.1049/el:19780158
- Type: Article
- + Show details - Hide details
-
p.
232
(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
