Title :
A Substrate Integrated Waveguide Circular Polarized Slot Radiator and Its Linear Array
Author :
Chen, Peng ; Hong, Wei ; Kuai, Zhenqi ; Xu, Junfeng
Author_Institution :
Sch. of Inf. Sci. & Eng., Southeast Univ., Nanjing
fDate :
7/1/1905 12:00:00 AM
Abstract :
A top-wall substrate integrated waveguide (SIW) slot radiator for generating circular polarized (CP) field is proposed and characterized in this letter. The reflection of the slot radiator is extremely weak, which simplifies the linear traveling wave array design. Based on such a structure, a 16-element CP SIW traveling wave antenna array is designed, fabricated, and measured at 16 GHz. A -23 dB side lobe level (SLL) with an axial ratio (AR) of 1.95 dB is experimentally achieved. The size of the proposed SIW CP linear array antenna is 285 mm times 22 mm. The measured gain is 18.9 dB, and the usable bandwidth is 2.5%.
Keywords :
linear antenna arrays; polarisation; substrate integrated waveguides; axial ratio; circular polarized slot radiator; frequency 16 GHz; linear traveling wave array; noise figure -23 dB; side lobe level; substrate integrated waveguide; traveling wave antenna array; Circular polarized (CP) antenna; substrate integrated waveguide (SIW); traveling wave antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
Conference_Location :
12/16/2008 12:00:00 AM
DOI :
10.1109/LAWP.2008.2011062
