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Development of On-Board Dual-Band Antenna for Small Walkie-Talkie
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 Title & Authors
Development of On-Board Dual-Band Antenna for Small Walkie-Talkie
Park, Young-bae; Lee, Sang-suck; Lee, Young-hun;
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 Abstract
In this paper, it can be applied to a walkie-talkie, the RFID / USN 920 MHz band(917~923.5 MHz) and WiFi 2.4GHz band(2.4~2.483 5GHz) return loss is 10 dB over the band, on-board dual band with omni-directional radiation characteristics is proposed. The basic structure designed antenna is used meander monopole antenna. It was used as double stubs and tabs for antenna designs that meet the criteria proposed. The double stub and the tab affects the reactance of the antenna to form a common-mode and differential-mode in the stub to improve the antenna characteristics and return loss in the bandwidth, gain and radiation characteristics. The system size of walkie-talkie is , the size of the antenna is limited to , the thickness of FR4 dielectric substrate is 0.8 mm, FR4 dielectric constant 4.4 is used. For experimental results, the return loss is measured more than 10 dB, the maximum gain is measured 1.95 dB, the maximum bandwidth is measured 360 MHz, the radiation characteristic is measured omni-directional. By a walkie-talkie terminal design applying the results of the paper, the handset`s price competitiveness and production efficiency can be improved.
 Keywords
Monopole Antenna;Common-Mode;Differential-Mode;Dual-band Antenna;RFID/USN;WiFi;
 Language
Korean
 Cited by
 References
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