Silicon amplifiers in D-Band are required to operate at high gain-bandwidth products and close to the cutoff frequency f_\max . Multi-stage amplifiers commonly employ stagger-Tuning to meet the desired bandwidth, but with sub-optimal noise and linearity. Better performance is achieved with broadband inter-stage matching and gain progressively distributed among the stages. This work proposes a design flow for broadband matching networks approximating the response of a doubly-Tuned transformer. The technique is applied to design a 3-stage D-band LNA in BiCMOS 55 nm technology. Measurements show 28 dB gain, 127-168 GHz bandwidth, NF down to 5.2 dB and >2dBm output compression point with 30 mA DC current from 2V supply. The performance compare favorably against previous works.
A D-Band Low-Noise-Amplifier in SiGe BiCMOS with Broadband Multi-Resonance Matching Networks
Piotto L.;Bilato A.;Mazzanti A.
2023-01-01
Abstract
Silicon amplifiers in D-Band are required to operate at high gain-bandwidth products and close to the cutoff frequency f_\max . Multi-stage amplifiers commonly employ stagger-Tuning to meet the desired bandwidth, but with sub-optimal noise and linearity. Better performance is achieved with broadband inter-stage matching and gain progressively distributed among the stages. This work proposes a design flow for broadband matching networks approximating the response of a doubly-Tuned transformer. The technique is applied to design a 3-stage D-band LNA in BiCMOS 55 nm technology. Measurements show 28 dB gain, 127-168 GHz bandwidth, NF down to 5.2 dB and >2dBm output compression point with 30 mA DC current from 2V supply. The performance compare favorably against previous works.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
