A new active RF phase shifter using variable gain, drain Voltage controlled PHEMTs:A 2.4-GHz ISM implementation

Author

Mitilineos, Stelios A. ; Mitropoulos, George K. ; Capsalis, Christos N.

Author_Institution

Lab. of Antennas, Nat. Tech. Univ. of Athens, Greece

Volume

15

Issue

7

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

454

Lastpage

456

Abstract

Phase shifters operating at RF bands are an essential component of phased and adaptive arrays circuits. In this letter, an active phase shifter is proposed, using vector summing of an in-phase and a quad-phase replica of the incoming signal. The proposed scheme was designed and implemented using a Wilkinson power combiner/divider, a branch line hybrid coupler and single-stage variable gain amplifiers (VGAs), achieving continuous phase shift within the range of [0°, 90°]. The manufactured prototype is suitable for WLAN operations in the 2.4-GHz ISM band. Details of the phase shifter design and experimental results are presented.

Keywords

UHF phase shifters; active networks; amplifiers; high electron mobility transistors; power combiners; power dividers; 2.4 GHz; ISM implementation; RF bands; WLAN operations; Wilkinson power combiner; Wilkinson power divider; active RF phase shifter; adaptive arrays circuits; branch line hybrid coupler; drain voltage controlled PHEMT; phased arrays circuits; single-stage variable gain amplifiers; variable gain PHEMT; vector summing; voltage controlled amplifier; voltage controlled phase shifter; Adaptive arrays; Coupling circuits; Gain; Manufacturing; Phase shifters; Phased arrays; Power amplifiers; Power combiners; Radio frequency; Voltage control; Vector summing; voltage controlled amplifier; voltage controlled phase shifter;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2005.851555

Filename

1458807