Yanfei Mao

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The paper presents a four stage 245 GHz LNA in an f<sub>t</sub>/f<sub>max</sub>=280/425 GHz SiGe technology and a 4<sup>th</sup> sub harmonic 245 GHz transconductance mixer in an f<sub>t</sub>/f<sub>max</sub>=250/300 GHz SiGe technology. The LNA takes advantage of common base (CB) topology for each stage and has 12 dB gain at 245 GHz, while exhibiting a 3(More)
A four-stage common-base (CB) 245-GHz low-noise amplifier (LNA) and a fourth subharmonic 245-GHz transconductance mixer are presented. An integrated subharmonic receiver for sensing applications in the 245-GHz industrial-scientific-medical band is proposed. The receiver consists of a single-ended CB LNA, a fourth transconductance subharmonic mixer, a 60-GHz(More)
The paper presents a four stage 245 GHz LNA in SiGe technology. Common base (CB) topology is chosen for each stage. The amplifier takes advantage of passives like transmission lines and MIM capacitors to realize the input, output and inter-stage matching for the LNAs. The LNA has 12 dB gain at 245 GHz, a 3 dB bandwidth of 26 GHz. It has a supply voltage of(More)
Two subharmonic receivers for 245 GHz spectroscopy sensor applications in the 245 GHz ISM band have been proposed. One receiver consists of an 2nd APDP (antiparallel diode pair) passive SHM (subharmonic mixer), a 120 GHz push-push VCO with 1/64 divider, and a 120 GHz PA (power amplifier). The other consists of a single-ended four-stage CB (common base) LNA,(More)
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&#x00B0; 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.(More)
A subharmonic receiver for sensing applications in the 245 GHz ISM band has been proposed. The receiver consists of a single-ended common base LNA, a 60 GHz push-push VCO with 1/32 divider, a transconductance 4<sup>th</sup> subharmonic mixer and IF amplifier. The receiver is fabricated in f<sub>T</sub>/f<sub>max</sub>=300/500 GHz SiGe: C BiCMOS technology.(More)
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