Implementation of reflection-type impatt microstrip amplifiers and examination of their intermodulation distortion
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In the first portion of this thesis, a procedure is presented for the design of a new stable IMPATT-diode microstrip amplifier with excellent and almost independent control of center frequency and gainbandwidth product. The intermodulation distortion of the microstrip amplifier is then measured on a spectrum analyzer using a phase-locked microwave two-tone generator for the input signal. The test is performed on the microstrip amplifier first without, and then with a diode bias-current compensation technique. An improvement of 15 dB to 25 dB in the third-order intermodulation products is obtained in the band of the amplifier using the bias compensation circuit. This improvement opens the possibility for IMPATT microstrip amplifiers to be used in AM transmission systems whose modulation frequencies lie within the band of the video amplifiers employed in the bias-current compensation loop.
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This work is available on request. You can request a copy at https://library.carleton.ca/forms/request-pdf-copy-thesis
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Copyright © 1978 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 1978
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