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A 24-GHz full-360° CMOS reflection-type phase shifter MMIC with low loss-variation

Jen-Chieh Wu, Chia‐Chan Chang, Sheng‐Fuh Chang, Ting-Yueh Chin

Open publisher page 29 citations

Abstract

A 24-GHz bi-directional CMOS reflection-type phase shifter (RTPS) with full 360deg phase tuning range and minimal insertion-loss variation is presented. Two circuit enhancement techniques are employed: the broadside-coupled transformer-based hybrid and the pi-type resonated varactor load. The implemented 0.18-mum CMOS RTPS demonstrates a measured phase shift range of 360deg with small insertion-loss variation of plusmn1.2 dB at 24 GHz. The chip is 0.33 mm2in area and it consumes zero DC power.

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What this paper is about

A 24-GHz bi-directional CMOS reflection-type phase shifter (RTPS) with full 360deg phase tuning range and minimal insertion-loss variation is presented. Two circuit enhancement techniques are employed: the broadside-coupled transformer-based hybrid and the pi-type resonated varactor load. The implemented 0.18-mum CMOS RTPS demonstrates a measured phase shift range of 360deg with small insertion-loss variation of plusmn1.2 dB at 24 GHz. The chip is 0.33 mm2in area and it consumes zero DC power.

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Available abstract

A 24-GHz bi-directional CMOS reflection-type phase shifter (RTPS) with full 360deg phase tuning range and minimal insertion-loss variation is presented. Two circuit enhancement techniques are employed: the broadside-coupled transformer-based hybrid and the pi-type resonated varactor load. The implemented 0.18-mum CMOS RTPS demonstrates a measured phase shift range of 360deg with small insertion-loss variation of plusmn1.2 dB at 24 GHz. The chip is 0.33 mm2in area and it consumes zero DC power.

Key concepts: Phase shift module, Varicap, CMOS, Insertion loss, Monolithic microwave integrated circuit, Electrical engineering, Transformer, Chip

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