Title :
38 GHz high-directivity planar leaky-mode antenna array
Author :
Hung, Tsai-Pi ; Tzuang, Ching-Kuang C.
Author_Institution :
Inst. of Electr. Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
This paper presents a high-directivity planar microstrip antenna array operating at microwave frequency. The antenna array consists of 48 sub-arrays, and each sub-array comprises 4 elements. The radiation mechanism of the single element, by exciting the first higher order mode (EH 1 mode), can be estimated by the full-wave analysis. Through appropriately arranging and feeding these 192 single elements, the radiated characteristic of the antenna performs narrow radiation beamwidth both in azimuth (AZ) and elevation (EL), thus achieving high directivity. The planar microstrip antenna array prototype is built and tested at 38GHz by traditional printed circuit board (PCB) fabricating process. The measurement result indicates the high directivity of 22.3dB and the 3-dB beamwidth of 8°/12° (AZ/EL) at the elevated angle 30.2° away from the broadside direction.
Keywords :
antenna radiation patterns; directive antennas; leaky wave antennas; microstrip antenna arrays; millimetre wave antenna arrays; planar antenna arrays; 38 GHz; azimuth; elevation; full-wave analysis; high-directivity planar leaky-mode antenna array; higher order mode; microstrip antenna array; printed circuit board fabricating process; radiated characteristic; radiation beamwidth; radiation mechanism; Antenna arrays; Antenna feeds; Azimuth; Circuit testing; Microstrip antenna arrays; Microstrip antennas; Microwave antenna arrays; Microwave frequencies; Printed circuits; Prototypes;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei, Taiwan
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985534