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Thermoelectric power detector for microwave application at X-band based on GaAs MMIC technology

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2 Author(s)
D. -B. Wang ; Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, People's Republic of China ; X. -P. Liao

A thermoelectric power detector is proposed to integrate with MMICs and other planar connecting circuit structures at X-band (8-12 GHz). The thermoelectric power detectors without and with the tapered line are designed to use 50 Ω coplanar waveguides as commonly applied in MMIC devices. The sensitivity without the tapered line is about 0.224, 0.211, and 0.202 mV/mW at 8, 10, and 12 GHz, respectively. For the power detector with the tapered line, the sensitivity is about 0.326, 0.311, and 0.295 mV/mW, and it increases averagely about 46% compared with that without the tapered line. This reported work is focused on developing microwave power detectors to be integrated with MMICs and other planar connecting circuit structures.

Published in:

Electronics Letters  (Volume:47 ,  Issue: 1 )