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Internal Microstrip DualBand Antenna  

Park Seong-il (Dept. of Electronics Engineering, Chonnam National University)
Ko Young-hyuk (Dept. of Information & Communication Engineering Dongshin University)
Lee Hyeon-jin (Dept. of Electronics & Information, Dongksng College)
Lim Yeong-seog (Dept. of Electronics Engineering, Chonnam National University)
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Abstract
Many novel designs of planar antennas for related applications such as internal mobile phone antennas, base station antennas, WLAN or Bluetooth antennas, and so on, have been reported very recently, especially since the year 2000. In this thesis, Dualband internal antenna for GSM/DSC handset is proposed. The antenna has a size of about 38mm$\times$90mm$\times$1mm, giving a total mobile phone PCB for support and fold type Patch of about 30mm$\times$8mm$\times$3.2mm. This antenna characteristic facilitates the fine-tuning of the two operating frequencies of 909MHz and 1762MHz in this dualband design. The measured radiation pattern in the E-plane and H-plane for operating frequencies of 909MHz and 1762MHz is compared and analyzed. The designed and fabricated two band internal antenna for GSM/DSC handset have a gain between 0dBi and 2.0dBi at all bands.
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