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A 245-GHz transmitter (TX) array with an integrated antenna-array for a gas spectroscopy system has been realized. It consists of a push–push VCO with a 1/64 frequency divider, power amplifiers, frequency doublers, and on-chip antennas with localized backside etching. The TX-frequency is tunable in the range from 238 to 252 GHz. The TX-array has been fabricated in a 0.13- SiGe:C BiCMOS...
Novel high efficiency Terahertz on-chip antenna is presented. The proposed antenna is based on IHP SiGe process SG13G2. We use the SiO2 layer as a low-loss substrate. The antenna structure is shielded from the lossy bulk of the chip with a rectangular ground. The antenna has a simulated gain of 2.25dBi at 710GHz and radiation efficiency of 31%.
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