[天线]A novel design of a CPW-fed square slot antenna with broadband circular polarization

  A novel design of a CPW-fed square slot antenna with broadband circular polarization HI6;=~[  
Chang, Kow-Ming1; Lin, Ren-Jie1; Deng, I.-Chung2; Chen, Jin-Bo2; Xiang, Ke Qing2; Rong, Chang Jun2 Source: Microwave and Optical Technology Letters, v 48, n 12, p 2456-2459, December 2006 Ym6zNb8 bQ  
ISSN: 08952477 CODEN: MOTLEO L/9f"%kZ  
Publisher: John Wiley and Sons Inc. cU7 c}?J<  
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Author affiliation: . fq[>zG'&  
1  Department of Electronics Engineering, Institute of Electronics, National Chiao Tung University, Hsinchu, 30050, Taiwan U&#1qRm\h  
2  Department of Electronics Engineering, Institute of Mechatronic Engineering, Northern Taiwan Institute of Science and Technology, Taipei, 112, Taiwan >J>4g;Y  

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Abstract: A novel design of a broadband circularly polarized square slot antenna fed by a single coplanar waveguide is proposed and discussed. The circularly polarized radiation is achieved by means of using an outer rectangular ring and an inner rectangular ring at the center of a square slot. The proposed antenna has the fundamental resonant frequency of 2.44 GHz with the return loss of -40.93 dB, and it has the bandwidth of 3 dB axial ratio of 420 MHz or (17.21%). Details of the results are presented and discussed. © 2006 Wiley Periodicals, Inc. (9 refs.) jz(}P8  
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Controlled terms:  Bandwidth  -  Broadband amplifiers  -  Natural frequencies  -  Polarization  -  Radiation  -  Waveguides -N+'+  
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Uncontrolled terms:  Axial ratio  -  Circularly polarized  -  Single coplanar waveguide  -  Square slot antenna mle"!*  
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Classification Code:   716.1 Information Theory and Signal Processing  -  716 Telecommunication; Radar, Radio and Television  -  714.3 Waveguides  -  713. .. .n]P6t  
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