29 GHz E-plane biphase modulator |
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| Authors: | Thorpe W Gilliland JD |
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| Affiliation: | British Telecom Research Laboratories, Ipswich, UK; |
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| Abstract: | A biphase PSK modulator for use in 29 GHz radio equipment has been developed that gives state-of-the-art performance (less than 3 dB insertion loss across 7% bandwidth, including transition losses, and 70/100 Mbit/s data rate using PIN diodes as the switching elements). A drive amplifier has been developed for use with the modulator that allows beam lead PIN diodes with a long minority carrier lifetime to be used in the circuit up to 70 Mbit/s. |
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