Title :
A modified bow-tie slot antenna fed by a coplanar waveguide
Author :
Chen, Shih-Yuan ; Hsu, Powen
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A modified CPW-fed bow-tie slot antenna is proposed; it has a wider impedance bandwidth than that of the conventional CPW-fed bow-tie slot antenna. The antenna structure remains simple and the better impedance matching is obtained through the insertion of a 180-degree delay slotline between the feeding CPW and one of the two parts of the bow-tie slot. A 47.4% impedance bandwidth, 2.3 to 5.1 dBi in-band antenna gains, and broadside bidirectional radiation patterns are measured and presented for an H-band prototype antenna.
Keywords :
antenna feeds; antenna radiation patterns; coplanar waveguides; delay lines; electric impedance; impedance matching; slot antennas; slot lines; 2.3 to 5.1 dB; 3.5 to 5.7 GHz; CPW feed; H-band antenna; broadside bidirectional radiation patterns; coplanar waveguide feed; delay slotline; impedance bandwidth; impedance matching; in-band antenna gain; modified bow-tie slot antenna; Antenna feeds; Antenna measurements; Antenna radiation patterns; Bandwidth; Coplanar waveguides; Delay; Impedance matching; Impedance measurement; Slot antennas; Slotline;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1329791
