A Highly Compact 2.4-GHz Passive 6-bit Phase Shifter With Ambidextrous Quadrant Selector

作者：Cook Mackenzie^*; Rogers John W M

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2017, 64(2): 131-135.

DOI：10.1109/TCSII.2016.2551551

• Phase shifter
• quadrant selector
• varactor
• variable capacitors

An extremely compact architecture for a passive 6-bit digital phase shifter is presented. The phase shifter has a range of 360. with 5.6. resolution at 2.4 GHz. The architecture is composed of an ambidextrous quadrant selector in series with a digital fine-tuned phase shifter that makes use of high-ratio symmetrical digitally variable capacitors loading a lumped element transmission line. The phase shifter achieves a 50 Omega match in all 64 states. The circuit occupies approximately 0.47 mm(2) on die, and the entire test chip measured 0.84 mm(2), including bond pads and ESD structures. The 1-dB compression point was +23 dBm. The chip was fabricated in a commercial 0.13-mu m silicon-on-insulator CMOS process.

• 出版日期2017-2