A 60‐GHz variable gain amplifier with low phase and OP1dB variation. Issue 2 (30th October 2019)

• Record Type: Journal Article
• Authors: Byeon, Chul Woo; Park, Chul Soon
• Is Part Of: Microwave and optical technology letters. Volume 62:Issue 2(2020:Feb.)
• Page Start: 696
• Page End: 700
• Publication Date: 2019-10-30
• Subjects: 60 GHz -- BiCMOS -- cascode -- current steering -- millimeter‐wave -- OP1dB -- OP1dB variation -- phase variation -- phased‐array -- SiGe -- variable gain amplifier; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.32123
• Languages: English
• ISSNs: 0895-2477

Abstract

Abstract: This article presents a 60 GHz variable gain amplifier (VGA) with a low phase and output 1‐dB gain compression point (OP1dB) variation for phased‐array applications. The VGA employs a two‐stage modified current‐steering cascode. Implemented in 0.18‐μm SiGe BiCMOS technology, the VGA has a gain control range of 20.4 dB with a maximum gain of 17.7 dB at 60 GHz. The OP1dB variation is only 2.3 dB for all gain states at 60 GHz with a DC power consumption of 50 mW, and the measured phase variation is less than 4.8° at 57 to 66 GHz.