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[Keyword] one point feed(1hit)

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  • Stub Loaded Dual-Frequency Microstrip Antenna for 2 GHz and 5 GHz Use

    Shunsuke SAITO  Hiroyuki ARAI  

     
    PAPER-Antennas and Propagation

      Vol:
    E87-B No:12
      Page(s):
    3747-3752

    This paper presents a dual-frequency microstrip antenna for both 2 GHz and 5 GHz for a dual-band receiver. For a simple structure and low cost design, the microstrip feed circuit is designed on the same substrate as the antenna elements. Each antenna element is directly fed by the microstrip line, and the open stubs are loaded on the feed line of 2 GHz to suppress the higher order mode resonances between 2 GHz and 5 GHz. The feed line length of each antenna is adjusted so as to change it to the open condition at the other element frequency at the feed point. In addition, we propose the antenna structure in which two antenna elements for 2 GHz are split and placed at either sides of the 5 GHz antenna to coincide with the center positions of each antenna element. We investigate the proposed antenna by calculations and measurements to show the combiner free design for the dual band antenna.