Title: Partially shorted MSA for mobile communications
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.
Publication Year: 2003
Publication Date: 2003-01-20
Language: en
Type: article
Indexed In: ['crossref']
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