Title :
A compact dual-band cavity-backed slot antenna
Author :
Liu, Y. ; Shen, Zhe ; Law, C.L.
Abstract :
A compact design for dual- and wide-band cavity-backed slot antenna is presented in this letter. The slot antenna is fed by two microstrip lines on the top of the substrate for 900- and 1800-MHz bands, respectively. With the use of a U-type slot and a ridged slot backed by one rectangular cavity, a compact design is realized for a dual- and wide-band slot antenna. A prototype is fabricated and tested in an anechoic chamber. The measured 10-dB return loss bandwidth is 28% for 900-MHz band and 31% for 1800-MHz band. The measured gain is 5.0 dBi at 1000 MHz, 5.5 dBi at 1800 MHz.
Keywords :
UHF antennas; anechoic chambers (electromagnetic); antenna feeds; antenna radiation patterns; antenna testing; broadband antennas; microstrip components; multifrequency antennas; slot antennas; 10 dB; 1800 MHz; 5.0 dB; 5.5 dB; 900 MHz; U-type slot; anechoic chamber; compact dual-band cavity-backed slot antenna; microstrip line feed; rectangular cavity; return loss bandwidth; ridged slot; wideband slot antenna; Anechoic chambers; Antenna measurements; Bandwidth; Broadband antennas; Dual band; Loss measurement; Microstrip antennas; Prototypes; Slot antennas; Testing; Cavity-backed slot antenna; dual-band; microstrip-fed; wide-band;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2005.863611
