A new active phase shifter using a vector sum method

Author

Kim, S.J. ; Myung, N.H.

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

Volume

10

Issue

6

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

233

Lastpage

235

Abstract

In this letter, a new active phase shifter is proposed using a vector sum method, and it is shown that the proposed phase shifter is more efficient than the others in size, power, number of circuits, and gain. Also a unique digital phase control method of the circuit is suggested. The proposed scheme was designed and implemented using a Wilkinson power combiner/divider, a branch line 3 dB quadrature hybrid coupler and variable gain amplifiers (VGA´s) using dual gate FETs (DGFETs). Furthermore, it is also shown that the proposed scheme is more efficient and works properly with the digital phase control method

Keywords

UHF phase shifters; phase control; power combiners; power dividers; Wilkinson power combiner/divider; active phase shifter; branch line 3 dB quadrature hybrid coupler; digital phase control method; dual gate FETs; gain; variable gain amplifiers; vector sum method; Coupling circuits; Design methodology; Gain; Phase control; Phase shifters; Power amplifiers; Power combiners; Radiofrequency amplifiers; Radiofrequency identification; Voltage;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.852426

Filename

852426