R. Desrosiers, J. Cowles, C. Hornbuckle, A. Gutierrez-Aitken, J. Becker
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This paper presents the first reported monolithic InP HBT BPSK modulator capable of >3 Gsps data rates on a 14 GHz carrier. The MMIC, consisting of a digital modulation driver and a diode mixer, was fabricated using TRW's 75 GHz f/sub t/ InP HBT MMIC process. The use of InP based devices for the mixer and driver circuits results in a 2/spl times/ decrease in power consumption compared with equivalent GaAs HBT circuits. The successful integration of traditional microwave and digital circuits demonstrates the versatility of InP HBTs as a high frequency, low power mixed-mode technology.
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