KIEE - The Transactions of the Korean Institute of Electrical Engineers

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The Transactions of the Korean Institute of Electrical Engineers

The Transactions of the Korean Institute of Electrical Engineers

ISO Journal TitleTrans. Korean. Inst. Elect. Eng.

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Title	The Design of Tx 30GHz/ Rx 20GHz Dual Feeding Circular Polarized Patch Antenna Using LTCC Process
Authors	김성남 ; 오민석 ; 천영민 ; 최재익 ; 표철식 ; 이종문 ; 천창율
Page	pp.448-454
ISSN	1975-8359
Keywords	Ring Patch Antenna ; Circular Patch Antenna ; Circular Polarized Antenna ; Axial Ratio
Abstract	In this paper, circular polarized antennas of Tx 30GHz and Rx 20GHz are implemented in LTCC process. Tx antenna has a circular patch structure and Rx antenna has a ring patch structure. The feeding line of Tx antenna is placed in the center hole of Rx ring patch antenna which is printed under Tx circular patch antenna layer. It makes antenna size smaller. Tx antenna's return loss in under -l0dB level from 30GHz to 31GHz and Rx antenna is under -10 dB from 20GHz to 21GHz. The isolation between two antennas is less than -20dB. Axial ratio is less than 3dB thoughout each band.

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