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A 245 GHz transmitter (TX) with an integrated antenna for sensing applications has been realized, which consists of a push-push VCO with a 1/64 frequency divider, a transformer-coupled one-stage power amplifier, a frequency doubler, and an on-chip antenna with localized backside etching. The frequency of the TX is tunable by an external PLL in the range from 239.5 GHz to 250.8 GHz. The TX is fabricated...
A subharmonic receiver (RX) for sensing applications in the 245 GHz ISM band is presented. The RX consists of a differential LNA, a 122 GHz push-push VCO with 1/64 divider, a LO-buffer, a 90° differential hybrid, an active subharmonic mixer, and an on-chip antenna. The VCO frequency is tunable by an external PLL in the range from 118 GHz to 125 GHz. The RX is fabricated in 0.13 µm SiGe:C BiCMOS technology...
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