Shan-Cheng Pan

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There are several designs of dual-frequency microstrip antennas, such as stacked microstrip antennas, slotted microstrip patch antennas, and dual-mode (operated at TM/sub 10/ and TM/sub 01/, modes) rectangular microstrip patch antennas. These dual-frequency designs, however, show only a moderate frequency ratio (up to about 2.0) between the two operating(More)
The characteristics of cylindrical microstrip antennas with triangular patches are studied theoretically and experimentally. The fundamental mode (TM/sub 10/ mode), having a broadside radiation pattern, is studied. A full-wave approach for the analysis of the cylindrical triangular microstrip antenna is applied, and the resonance frequency, input impedance,(More)
  • Shan-Cheng Pan, Wen-Hsiu Hsu
  • IEEE Antennas and Propagation Society…
  • 1999
A variety of dual-frequency microstrip antennas have been previously reported. However, it is noted that these dual-frequency designs usually support limited tunable frequency ratios for the two operating frequencies. To provide a very flexible frequency ratio for a single-feed dual-frequency microstrip antenna, the design with two circular patches has also(More)
The design of a single-layer dual-frequency rectangular microstrip antenna using a single probe feed has been demonstrated by Chen and Wong (see Microwave Opt. Technol. Lett., vol.11, p.83-4, 1996). In this dual-frequency design, the two operating frequencies are mainly determined from the patch dimensions and the substrate parameters, and the feed position(More)
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