I. Dan, D. Meier, S. Wagner, A. Leuther, A. Tessmann, H. Massler, I. Kallfass
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A 300 GHz multi-stage balanced variable gain amplifier with Tandem-X couplers
This paper presents the design and measured performance of an H-Band (220-325 GHz) submilimeter-wave monolithic integrated circuit (S-MMIC) implementing a balanced variable-gain low-noise amplifier (VGA) based on Tandem-X couplers for use in next generation communication systems. This amplifier will be used as first stage in an integrated wideband receiver for 300 GHz wireless communication for indoor environments. It provides low-noise pre-amplification as well as gain control in front of a quadrature down-conversion mixer.
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