A compact phase-shifting unit for phased array antennas

Author

Can Ding ; Guo, Y. Jay ; Pei-Yuan Qin ; Yintang Yang

Author_Institution

Sch. of Micro-Electron., Xidian Univ., Xi´an, China

fYear

2014

fDate

8-10 Oct. 2014

Firstpage

443

Lastpage

446

Abstract

A compact reconfigurable defected microstrip structure (RDMS) unit is proposed for phase shifters used in phased array antennas. The RDMS unit can introduce a phase shift when working in two different states. The performance of the RDMS unit, including the phase shift and insertion loss, is found to have closely correlations with some key dimensions, which is elucidated using equations and simulations. A RDMS unit with optimized dimensions is fabricated as an example, and measured to have a phase shift of 20° at 5.2 GHz. Then, two of such RDMS units are cascaded, resulting in a 1-bit phase shifter which has a doubled phase shift but smaller insertion loss. The proposed phase shifter is compact, low cost, and easy to be fabricated and integrated in microstrip systems. Therefore, it offers a low-cost and low-profile solution to phase shifts in phased array antennas.

Keywords

antenna accessories; antenna phased arrays; microstrip antenna arrays; microwave phase shifters; RDMS unit; compact reconfigurable defected microstrip structure unit; frequency 5.2 GHz; insertion loss; low-cost solution; low-profile solution; microstrip systems; phase shifters; phased array antennas; word length 1 bit; Arrays; Capacitors; Insertion loss; Mathematical model; Microstrip; Phase shifters; Phased arrays; Reconfigurable defected microstrip structure (RDMS); insertion loss; phase-shifting unit; phased array antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

European Radar Conference (EuRAD), 2014 11th

Conference_Location

Rome

Type

conf

DOI

10.1109/EuRAD.2014.6991302

Filename

6991302