A DQPSK satellite transponder using 14-GHz MIC technology
Abstract
The paper deals with recent developments which have confirmed the feasibility of a lightweight reliable DQPSK demodulator which uses cascaded bandpass filters in MIC form to provide 16-nsec delay as well as a planar demodulator. Fused silica substrates for the delay line implementation provide satisfactory temperature stability for satellite use. The remaining elements of the regenerative repeater, such as the 14-GHz amplifier, self-equalized bandpass filters (with flat group delay for transponder channelization), the modulator, and the transmitter can be realized with the available technology. It is shown that the key to the production of lightweight compact regenerative receivers suitable for multichannel operation is the realization of the MIC form of the DQPSK receiver.
- Publication:
-
EASCON 1978; Electronics and Aerospace Systems Convention
- Pub Date:
- 1978
- Bibcode:
- 1978ieee.conf..411M
- Keywords:
-
- Communication Satellites;
- Integrated Circuits;
- Microwave Circuits;
- Phase Shift Keying;
- Transponders;
- Weight Reduction;
- Bandpass Filters;
- Delay Lines;
- Demodulators;
- Microwave Amplifiers;
- Microwave Transmission;
- Modulators;
- Multichannel Communication;
- Satellite Transmission;
- Superhigh Frequencies;
- Electronics and Electrical Engineering