Compact digital phase shifter for active phased array antenna system

Author

Eom, S.Y. ; Jeon, S.I. ; Choi, J.I. ; Park, H.-K.

Author_Institution

Electron. & Telecommun. Res. Inst., Taejeon, South Korea

Volume

1

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

303

Abstract

A compact digital phase shifter for an active phased array antenna system is made using a folded hybrid coupler. The theoretical analysis is given for the folded structure of a branch-line hybrid coupler. To validate its feasibility, the 4-bit digital phase shifter is designed using commercial simulators and implemented on a Teflon soft substrate (ε_r=2.17). Its circuit size is less than 3.5 cm × 3.0 cm and it exhibits at least 50% size reduction as compared with the conventional configuration. Its experimental results are also presented.

Keywords

active antenna arrays; antenna phased arrays; microstrip couplers; microwave integrated circuits; microwave phase shifters; network synthesis; 3.0 cm; 3.5 cm; Teflon substrate; X-band; active array antenna; branch-line coupler; digital phase shifter; folded hybrid coupler; microstrip line technology; microwave IC technology; phased array antenna; soft substrate; Antenna arrays; Coupled mode analysis; Coupling circuits; Diodes; Distributed parameter circuits; Optical coupling; Optical reflection; Phase shifters; Phased arrays; Transmission line theory;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Optoelectronics Conference, 2001. IMOC 2001.Proceedings of the 2001 SBMO/IEEE MTT-S International

Print_ISBN

0-7803-7065-1

Type

conf

DOI

10.1109/SBMOMO.2001.1008771

Filename

1008771