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|Title:||Wideband VGA in 0.13-μm CMOS with phase reversal for 360°vector-sum phase shifters||Authors:||Zijie, H.
|Keywords:||CMOS wideband VGA
Full 360°vector-sum phase shifter
|Issue Date:||2013||Citation:||Zijie, H.,Mouthaan, K. (2013). Wideband VGA in 0.13-μm CMOS with phase reversal for 360°vector-sum phase shifters. European Microwave Week 2013, EuMW 2013 - Conference Proceedings; EuMIC 2013: 8th European Microwave Integrated Circuits Conference : 272-275. ScholarBank@NUS Repository.||Abstract:||A wideband phase-reversible variable gain amplifier (VGA) for application in full-360°vector-sum phase shifters is presented. The proposed VGA exhibits a continuously tunable gain with reversible phase, while only requiring a single-ended input. To realize the fully single-ended topology, a differential-to-single-ended converter with common-mode suppression at the output port is proposed. A modified three-stage Cherry-Hooper amplifier with inductive peaking is also adopted for gain flattening and output matching. To the best of our knowledge, it is the first time that the phase-reversible concept is proposed and realized in VGAs. As an example, a CMOS prototype exhibiting a phase-reversible and linear-in-magnitude controlled gain range of 18 dB, is demonstrated with only one control voltage. The measured 5-dB gain bandwidth is from 0.6 to 6.8 GHz, together with the input return loss better than 10 dB. Operating at 1.2 V, the chip consumes 12 mW and occupies 0.83 mm2, including test pads. © 2013 EuMA.||Source Title:||European Microwave Week 2013, EuMW 2013 - Conference Proceedings; EuMIC 2013: 8th European Microwave Integrated Circuits Conference||URI:||http://scholarbank.nus.edu.sg/handle/10635/84365||ISBN:||9782874870323|
|Appears in Collections:||Staff Publications|
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