Design and Implementation of a Broadband Single-Layer Reflectarray Antenna With Large-Range Linear Phase Elements

Author

Malfajani, Reza Shamsaee ; Atlasbaf, Zahra

Author_Institution

Dept. of Electr. & Comput. Eng., Tarbiat Modares Univ., Tehran, Iran

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

1442

Lastpage

1445

Abstract

Design and implementation of a broadband center-fed single-layer reflectarray antenna is studied in this letter. Each element in the proposed reflectarray consists of a circular patch attached to a variable-length single phase-delay line to achieve more than 1000° linear phase range within 10.8~12.8-GHz frequency band. The main characteristic of the proposed element is its large linear phase range, which increases the bandwidth and performance in reflectarrays. Using a special arrangement of elements enables the reflectarray to achieve a low cross polarization. Measurement results show a maximum gain of 26.2 dB at 11.8 GHz, and 17% 3-dB gain bandwidth in the range 10.8~12.8 GHz.

Keywords

broadband antennas; delay lines; microstrip antenna arrays; polarisation; reflectarray antennas; broadband center fed single layer reflectarray antenna; circular patch antenna; cross polarization; frequency 10.8 GHz to 12.8 GHz; linear phase element; phase delay line; Antenna radiation patterns; Bandwidth; Broadband antennas; Delay lines; Gain; Microstrip; Reflector antennas; Circular microstrip patch; phase-delay line; reflectarray;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2228147

Filename

6355949