Title :
A reconfigurable microstrip antenna with agile polarization using diode switches
Author :
Sai-Xiong Cao ; Xue-Xia Yang ; Bo Gong ; Bing-Cheng Shao
Author_Institution :
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai, China
Abstract :
A novel compact reconfigurable microstrip antenna with agile polarization is proposed. Two small orthogonal notches near opposite angles of the square patch are cut. A PIN diode is placed on every notch and is used as switch to change the current distribution. By controlling two switches, the antenna can operate on left-hand, right-hand and linear polarizations. This antenna is designed, fabricated and measured. Measured results are better than simulated ones by HFSS. Experimental results show that S11 less than -10dB for two circular polarization are both about 470MHz (5.27-5.74GHz) and bandwidth of AR less than 3 is about 110MHz with minimum value of 0.65dB. Good directivity and about 6.5dB gain are obtained.
Keywords :
electromagnetic wave polarisation; microstrip antennas; p-i-n diodes; semiconductor switches; PIN diode; agile polarization; circular polarization; diode switch; left-hand polarization; linear polarization; orthogonal notch; reconfigurable microstrip antenna; right-hand polarization; Antenna measurements; Frequency measurement; Microstrip; Microstrip antennas; Polarization; Switches; circular polarization; diode switches; microstrip antennas; reconfigurable antennas;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996598
