Title :
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
fDate :
6/23/1905 12:00:00 AM
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 (εr=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;
Conference_Titel :
Microwave and Optoelectronics Conference, 2001. IMOC 2001.Proceedings of the 2001 SBMO/IEEE MTT-S International
Print_ISBN :
0-7803-7065-1
DOI :
10.1109/SBMOMO.2001.1008771
