Reflective-Type Phase Shifters for Multiple-Antenna Transceivers

Author

Zarei, Hossein ; Charles, Cameron T. ; Allstot, David J.

Volume

54

Issue

8

fYear

2007

Firstpage

1647

Lastpage

1656

Abstract

A 10.5-GHz reflective-type phase shifter (RTPS) using resonant loads with L-match impedance transformation (RLT) is implemented in a 0.25-mum SiGe BiCMOS process. A 2.4-GHz RTPS with RLT loads is also integrated in 0.18-mum CMOS; it employs a negative resistance (NR) technique to reduce the loss by 5.9 dB compared to a conventional design that is also implemented. Several other 2.4-GHz reflective loads are fabricated in 0.18-mum CMOS including a Y-shaped dual RLT (DRLT). A transformation converts it from a Y-shape to a Delta-shape and enables use of the NR technique in an RTPS with DRLT loads, wherein the loss is reduced by 10 dB and the phase shift range is increased to over 360deg.

Keywords

BiCMOS integrated circuits; CMOS integrated circuits; antennas; phase shifters; transceivers; BiCMOS process; L-match impedance transformation; SiGe - Interface; Y-shaped dual RLT; frequency 10.5 GHz; multiple-antenna transceivers; negative resistance technique; reflective-type phase shifters; resonant loads; size 0.18 mum; size 0.25 mum; transformation converts; Array signal processing; Channel estimation; Circuits; Impedance; Linearity; Noise figure; Phase modulation; Phase shifters; Receivers; Transceivers; Multiple-antenna transceivers; Y-$Delta$ impedance conversion; negative-resistance; reflective load; reflective-type phase shifter (RTPS);

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2007.902440

Filename

4282093