Title :
Harmonic control of a square microstrip antenna operated at the 1.8 GHz band
Author :
Hsiao, Fu-Ren ; Chiou, Tzung-Wern ; Wong, Kin-Lu
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
This paper presents an experimental study of the harmonic resonance suppression of a square microstrip antenna fed by using a 50 Ω inset microstrip line with an open-circuited tuning stub. The antenna studied is operated at the 1.8 GHz band. By choosing the open-circuited tuning stub to be about 0.125 guided wavelength of the fundamental frequency and placing the tuning stub at a suitable position away from the feed point, the possible resonance of the microstrip antenna at the second harmonic frequency can be suppressed. The obtained experimental results are presented and discussed
Keywords :
UHF antennas; antenna feeds; electric impedance; harmonics suppression; losses; microstrip antennas; 1.8 GHz; harmonic control; harmonic resonance suppression; input impedance; inset microstrip line feed; open-circuited tuning stub; return loss; second harmonic frequency; square microstrip antenna; Antenna feeds; Antennas and propagation; Electromagnetic interference; Geometry; Microstrip antennas; Power harmonic filters; Radar antennas; Resonance; Resonant frequency; Tuning;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985299
