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Improved HBT MMIC Active Mixer for Wireless Applications
Man Long HER Kun Ying LIN Yi Chyun CHIOU Chih Yuan HSIEH
IEICE TRANSACTIONS on Electronics
Publication Date: 2004/06/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Microwaves, Millimeter-Waves
heterojunction bipolar transistor (HBT), monolithic microwave integrated circuit (MMIC), mixer, low-noise amplifier (LNA), active power adder,
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In this study, an improved heterojunction bipolar transistor (HBT) monolithic microwave integrated circuit (MMIC) active mixer is designed and fabricated. The HBT MMIC active mixer that is integrated with a low-noise amplifier (LNA) and active power adder can not only achieve high isolation, but can also dispense with one active component and reduce power consumption at the same time. Measurement results show that the conversion gain, LO-RF isolation, and double sideband noise figure (DSB-NF) of the proposed mixer are 22 dB, 40 dB, and 7 dB, respectively.