Now showing items 1-5 of 5
Abstract: | A simple technique for obtaining identical E- and H-plane patterns from E-plane sectoral feed horn is presented. Halfpower beam width and gain of the antenna are also improved considerably. Experimental results for a number of horns with flanges of various parameters are also presented. This system may find practical application in radar and space communication systems |
URI: | http://dyuthi.cusat.ac.in/purl/1431 |
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Axially symmetr ... ne sectoral horn feeds.PDF | (1.818Mb) |
Abstract: | A technique for improving the coupling between a feed horn and reflector by using corrugated metallic flanges is presented. Experimental data for flanges of varying parameters are given and theoretical explanation is supplemented |
URI: | http://dyuthi.cusat.ac.in/purl/1430 |
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Corrugated flan ... araboloidal reflectors.PDF | (1.323Mb) |
Abstract: | The design, erection and evalution procedures for it microwave anechuic chamber competed at Cochin University for antenna studies are presented the chamber has an average reflectivity level of - 32 dB on at X-band frequencies, and it i, comparable to international standards. |
URI: | http://dyuthi.cusat.ac.in/purl/1434 |
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Design,developm ... rowave antenna studies.PDF | (1.493Mb) |
Abstract: | With the advent of satellite communication and radio astronomy, the need for large and efficient reflector antennas had triggered a widespread investigation in reflector feed design techniques. Major improvements sought are reduction in spill-over, cross polarization losses and the enhancement of aperture efficiency. The search for such a feed culminated in the corrugated horn. The main idea behind the present work is to use the H-plane sectoral horns fitted with,corrugated flanges as feeds of a paraboloid and see how the secondary pattern of the reflector antenna varies with different parameters of the feed. An offset paraboloid is used as the secondary reflector in order to avoid the adverse effect of aperture ‘blocking by the feed horn structure on the secondary radiation pattern. The measurements were repeated for three different H-plane sectoral horns with the same set of corrugated flanges at various X-band frequencies. The following parameters of the whole system are studied: (a) Beam shaping. (b) Gain. (c) Variation of VSWR and (d) Cross polarization |
Description: | Department of Physics, Cochin University of Science and Technology |
URI: | http://dyuthi.cusat.ac.in/purl/3293 |
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Dyuthi-T1261.pdf | (16.59Mb) |
URI: | http://dyuthi.cusat.ac.in/purl/1104 |
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Pravinkumar P A 1985.pdf | (1.883Mb) |
Now showing items 1-5 of 5
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