A Waveguide Antenna With Bidirectional Circular Polarizations of the Same Sense

被引：21

作者：

Zhao, Yang ^{[1
]}

Wei, Kunpeng ^{[1
]}

Zhang, Zhijun ^{[1
]}

Feng, Zhenghe ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab Microwave & Commun, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2013年 / 12卷

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

Bidirectional; circular polarization; same sense; waveguide antenna; MICROSTRIP ANTENNA; SLOT ANTENNA;

D O I：

10.1109/LAWP.2013.2259462

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A square-aperture metallic waveguide antenna with bidirectional circularly polarized (Bi-CP) radiations of the same sense is proposed in this letter. Circular polarization was realized by two identical rectangular metal strips installed on one lateral side of the waveguide with a 45 degrees inclination angle. The two rectangular metal strips were vertically separated by a distance of a quarter guided wavelength and horizontally intersected with an angle of 90 degrees. They were excited with the same amplitude and phase by feeding the antenna in the middle of their diagonal line. A 90 degrees phase difference between the two rectangular metal strips was introduced by the spatial distance of a quarter guided wavelength, and thus circular polarizations of the same sense in the two opposite radiating directions were generated. A quarter-wavelength impedance transformer was designed to help with the antenna's matching characteristic. The measured impedance bandwidth for vertical bar S-11 vertical bar <= -10 dB was 710 MHz (1.92 similar to 2.63 GHz), and the measured 3-dB axial-ratio bandwidth was 200 MHz (2.34 similar to 2.54 GHz). The measured bidirectional 3-dB axial-ratio beamwidth at 2.44 GHz was 62 degrees, and the power variation was smaller than 3 dB within this angular range.

引用

页码：559 / 562

页数：4

共 10 条

[1] DUAL APERTURE-COUPLED MICROSTRIP ANTENNA FOR DUAL OR CIRCULAR-POLARIZATION [J].

ADRIAN, A ;

SCHAUBERT, DH .

ELECTRONICS LETTERS, 1987, 23 (23) :1226-1228

[2] Broadband circularly-polarised slot antenna array [J].

Chen, Y. -T. ;

Wu, S. -W ;

Row, J. -S. .

ELECTRONICS LETTERS, 2007, 43 (24) :1323-1324

[3] A TECHNIQUE FOR AN ARRAY TO GENERATE CIRCULAR-POLARIZATION WITH LINEARLY POLARIZED ELEMENTS [J].

HUANG, J .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1986, 34 (09) :1113-1124

[4] Slot-coupled back-to-back microstrip antenna with an omni- or a bi-directional radiation pattern [J].

Iwasaki, H .

IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION, 1999, 146 (03) :219-223

[5] A back-to-back rectangular-patch antenna fed by a CPW [J].

Iwasaki, H .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1998, 46 (10) :1527-1530

[6] Bidirectional radiated circularly polarised square-ring antenna for portable RFID reader [J].

Lin, Y. -F. ;

Chen, H. -M. ;

Chu, F. -H. ;

Pan, S. -C. .

ELECTRONICS LETTERS, 2008, 44 (24) :1383-U1

[7]

Narbudowicz A. Z., 2010, 2010 Loughborough Antennas & Propagation Conference (LAPC 2010), P205, DOI 10.1109/LAPC.2010.5666175

[8] Circularly Polarized Square Slot Antenna With a Largely Enhanced Axial-Ratio Bandwidth [J].

Pan, Shien-Piao ;

Sze, Jia-Yi ;

Tu, Po-Jen .

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2012, 11 :969-972

[9] ANALYSIS AND OPTIMIZED DESIGN OF SINGLE FEED CIRCULARLY POLARIZED MICROSTRIP ANTENNAS [J].

SHARMA, PC ;

GUPTA, KC .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1983, 31 (06) :949-955

[10] Wake Turbulence Structure Downstream of a Cambered Airfoil in Transonic Flow: Effects of Surface Roughness and Freestream Turbulence Intensity [J].

Zhang, Qiang ;

Ligrani, Phillip M. .

INTERNATIONAL JOURNAL OF ROTATING MACHINERY, 2006, 2006

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