Publications

BRAUN, RM 1991, 'CREATING SCIENTIFIC FORMULAS USING STANDARD WORD-PROCESSORS IS EASY', IEEE TRANSACTIONS ON EDUCATION, vol. 34, no. 1, pp. 138-139.
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This paper describes a method for entering scientific formulae into text using standard word processors. The described technique places a grid matrix on the screen into which the terms of the equation may be conveniently placed. The technique relies on

BRAUN, RM & MEYEROWITZ, GJ 1991, 'METEOR BURST COMMUNICATIONS .2. INVESTIGATION INTO ADAPTIVE-RATE MODEMS FOR METEOR BURST COMMUNICATION', ELECTRONICS & COMMUNICATION ENGINEERING JOURNAL, vol. 3, no. 5, pp. 213-222.
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Current meteor burst communication systems operate at constant bit rates of 4 kbit/s and are limited to average throughputs of 50 bit/s. The paper documents the design and implementation of an adaptive-bit-rate modem for optimising the throughput. A nove

Guo, YJ, Barton, SK & Wright, TMB 1970, 'Design of high efficiency Fresnel zone plate antennas', AP S International Symposium Digest IEEE Antennas and Propagation Society, pp. 182-185.
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With a family of ideal radiation patterns, the theory for designing high-efficiency phase-correcting FZP (Fresnel zone plate) antennas is presented. The optimum 3-dB beamwidth of the feed pattern as a function of F/D (focal length/diameter) of the plate, the relation between the phase efficiency of the antenna and the number of subzones used in each full-wave zone, and the total efficiency limits of various versions are given. It is found that the maximum efficiency of a practical FZP antenna is usually less than 70%. The theory has been employed in designing a four-layer experimental FZP reflector antenna, and good agreement between the theoretical expectation and the measured value is obtained.

Guo, YJ, Barton, SK & Wright, TMB 1970, 'Focal field distribution of Fresnel zone plate antennas', IEE Conference Publication, pp. 6-8.
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With the arrival of high power direct broadcasting satellites, there is an increasing demand for low-cost, environmentally unobtrusive antennas. An interesting candidate in this respect is the improved Fresnel zone plate, on which research is being carried out at the University of Bradford in colaboration with Mawzones Ltd. In this paper, a theoretical study on the focal field distributions of the simple Fresnel zone plate (FZP) antenna and its phase-correcting versions is reported.