Title :
Partially shorted MSA for mobile communications
Author :
Sohn, Young Youn ; Park, Sung Kyo ; Park, Chong Baek
Author_Institution :
Dept. of Electron., Kwangju Polytech. Coll., Kwangju, South Korea
Abstract :
We designed and fabricated microstrip line-fed QMSAs (quarter-wavelength microstrip antennas) partially shorted for the 850 MHz band on various Cu-clad laminate substrates (CHUKOH company), where the width of the radiation patch is identical with that of the ground plane. The resonant frequencies and the return losses due to the electrical thickness were measured by reducing the PSW (partially shorted width) to 0 mm, step by step, when the width of the microstrip line was 1.47 mm, 2.93 mm and 4.4 mm separately. As a result, a good characterized antenna with an 11% reduced resonant length and a return loss -29.44 dB was obtained when the total PSW was in the range of 70% of the width of the radiation patch, compared to the conventional QMSA
Keywords :
UHF antennas; antenna accessories; land mobile radio; microstrip antennas; mobile antennas; 29.44 dB; 850 MHz; CHUKOH company; Cu-clad laminate substrates; PSW; design; electrical thickness; fabrication; ground plane; microstrip line; microstrip line-fed QMSA; mobile communications; partially shorted MSA; partially shorted width; quarter-wavelength microstrip antennas; radiation patch; resonant frequencies; resonant length; return loss; return losses; Antenna accessories; Antenna measurements; Electric variables measurement; Frequency measurement; Laminates; Loss measurement; Microstrip antennas; Microstrip components; Mobile communication; Resonant frequency;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818465
