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Journal of the Korean Institute of Electromagnetic and Science 2005;5(3):140-145.
Measured Return Loss and Predicted Interference Level of PCB Integrated Filtering Antenna at Millimeter-Wave
Jae-Wook Lee1, Bong-Soo Kim2, Myung-Sun Song2
1School of Electronics, Telecommunication and Computer Engineering, Hankuk Aviation University
2Electronics and Telecommunications Research Institute(ETRI)
Abstract
In this paper, an experimental investigation for return loss and a software-based prediction for interference level of single-packaged filtering antenna composed of dielectric waveguide filter and PCB(Printed Circuit Board) slot antenna in transceiver module have been carried out with several different feeding structures in millimeter-wave regime. The implementation and embedding method of the existing air-filled waveguide filters working at millimeter-wave frequency on general PCB substrate have been described. In a view of the implementation of each components, the dielectric waveguide embedded in PCB and LTCC(Low Temparature Co-fired Ceramic) substrates has employed the via fences as a replacement with side walls and common ground plane to prevent energy leakage. The characteristics of several prototypes of filtering antenna embedded in PCB substrate are considered by comparing the wideband and transmission characteristics as a function of bent angle of transmission line connecting two components. In addition, as an essential to the packaging of transceiver module working at millimeter-wave, miniaturization technology maintaining the performances of independent components and the important problems caused by integrating and connecting the different components in different layers are described in this paper.
Key words: Filtering Antenna, PCB, LTCC, Millimeter-Wave, Interference, SIW, SIA
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