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# Electronics Letters

## Filter Results

Displaying Results 1 - 11 of 11
• ### n-channel enhancement m.o.s. transistor built in germanium-doped silicon

Publication Year: 1973, Page(s):153 - 154
| | PDF (1752 KB)

Shallow diffusion of germanium into silicon, performed in a vacuum or an open-tube furnace and followed by dry oxidation, results in a C/V curve positively shifted by about 1 V for a 1000 Ã thick oxide layer. The shift is due to negative charges in the oxide, which make possible the manufacture of n-channel enhancement metalÂ¿oxideÂ¿semiconductor transistors with an inversion-layer mobility of 77... View full abstract»

• ### Detection of acoustoelectric voltage by shear-horizontal-plate waves in cadmium-sulphide plates

Publication Year: 1973, Page(s):154 - 155
Cited by:  Papers (2)
| | PDF (1757 KB)

A novel configuration employing shear-horizontal-plate waves is used to detect acoustoelectric voltage in photoconductive cadmium sulphide. A theoretical expression (neglecting diffusion effects) for the voltage is also given. View full abstract»

• ### Improvements in surface-acoustic-wave pulse-compression filters

Publication Year: 1973, Page(s):156 - 157
Cited by:  Papers (9)
| | PDF (278 KB)

Computer simulations have been used to compare the performance of two common surface-acoustic-wave pulse-compressor geometries. Experimental results demonstrate that the desirable properties of both are achieved in a single device by using inclinedÂ¿ transducers, which give improved performance over large fractional bandwidths. View full abstract»

• ### Astable multivibrator with independent mark- and space-time control

Publication Year: 1973
| | PDF (153 KB)

A simple astable-multivibrator circuit is presented which enables independent control of mark and space time. In addition, the astable can be reliably stopped and started. The circuit described operates at frequencies up to 15 MHz and produces transistorÂ¿transistor-logic-compatible levels View full abstract»

• ### Analogue multiplexing using a digital technique

Publication Year: 1973, Page(s):158 - 160
| | PDF (384 KB)

A digital technique of multiplexing analogue signals is described whereby improved isolation between channels and negligible equivalent-channel onÂ¿ resistance is achieved. It is also suggested that the proposed method may find application in analogueÂ¿digital conversion View full abstract»

• ### Nonlinear interaction of acoustic surface waves with carriers

Publication Year: 1973, Page(s):160 - 162
| | PDF (567 KB)

We calculate the 2nd-order signal generation due to the space-charge nonlinearity induced by two interacting surface waves in a piezosemiconducting material. Using the BleusteinÂ¿Gulyaev mode as a typical example, it is shown that this 2nd-order term is not zero for two oppositely travelling surface waves of the same frequency Â¿ in the absence of electron drift. This calculation clearly shows tha... View full abstract»

• ### Equivalent relative permittivity and unloaded Q factor of integrated finline

Publication Year: 1973, Page(s):162 - 163
Cited by:  Papers (18)
| | PDF (474 KB)

To experimentally demonstrate the capabilities of integrated finline, a cavity test fixture was constructed and tested. The results were analysed to determine the manner in which the guide wavelength and unloaded Q factor varied. The measured unloaded Q factor of integrated finline was found to be two to three times better than that of microstrip. Owing to the low loss of integrated finline, its f... View full abstract»

• ### Frequency stability of millimetre-band reflex klystrons with various cooling techniques

Publication Year: 1973, Page(s):163 - 165
| | PDF (407 KB)

The fractional frequency deviation Â¿y(Â¿) of free-running conventional reflex klystrons in the 18Â¿99 GHz range has been measured in the laboratory for 0.01 s Â¿ Â¿ Â¿ 60 s. Â¿y(Â¿) increases as Â¿Â¿ for Â¿Â¿0.1 s. Depending on the individual klystron, water or oil-bath cooling reduces Â¿y(Â¿) by a factor of 2.5Â¿10, to approximately 5Ã10Â¿7 for Â¿ = 60 s. View full abstract»

• ### Bonded acoustic-surface-wave transducers

Publication Year: 1973, Page(s):165 - 166
Cited by:  Papers (2)
| | PDF (319 KB)

Experimental and theoretical results on the operation of single-crystal bonded acoustic-surface-wave transducers are presented. They show that broadband low-insertion-loss transduction can be achieved at frequencies up to 50 MHz. The coupling strengths realisable are greater than those possible with the piezoelectric substrates currently available. View full abstract»

• ### Short-pulse modulation of gallium-arsenide lasers with TRAPATT diodes

Publication Year: 1973, Page(s):166 - 167
Cited by:  Papers (5)
| | PDF (485 KB)

TRAPATT diodes producing current pulses with a halfwidth of 150 ps at a repetition rate around 1 GHz have been used to modulate successfully a double-heterostructure gallium-arsenide laser. View full abstract»

• ### Erratum: Generalisation of the bandpass-lowpass analogy and its application to a phase-shift-keying signal

Publication Year: 1973
| | PDF (93 KB)

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## Aims & Scope

Electronics Letters is internationally renowned for its rapid communication of new developments and emerging topics across the broad and interdisciplinary field of modern electronics and electrical engineering.

Full Aims & Scope

## Meet Our Editors

Editors-in-Chief

Professor Chris Toumazou
Director of the Biomedical Institute
Imperial College, London, UK

Professor Ian White