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This paper presents the design and performance of a broadband millimeter-wave frequency doubler MMIC using active 0.15μm GaAs PHEMT and operating at output frequencies from 20 to 44 GHz.This chip is composed of a single ended-into differential-out active Balun,balanced FETs in push-push configuration,and a distributed amplifier. The MMIC doubler exhibits more than 4 dB conversion gain with 12 dBm of output power,and the fundamental frequency suppression is typically -20 dBc up to 44 GHz.The MMIC works at V_(DD)=3.5 V,V_(SS)=-3.5 V,I_d=200 mA and the chip size is 1.5×1.8 mm~2.
This paper presents the design and performance of a broadband millimeter-wave frequency doubler MMIC using active 0.15 μm GaAs PHEMT and operating at the at output frequencies from 20 to 44 GHz. This chip is composed of a single ended-into differential-out active Balun, balanced The MMIC doubler exhibits more than 4 dB conversion gain with 12 dBm of output power, and the fundamental frequency suppression is typically -20 dBc up to 44 GHz. The MMIC works at V_ ( DD = 3.5 V, V SS = - 3.5 V, I_d = 200 mA and the chip size is 1.5 × 1.8 mm ~ 2.