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Cost-Effective 60-GHz Antenna Package With End-Fire Radiation for Wireless File-Transfer System

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5 Author(s)
Suga, R. ; Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan ; Nakano, H. ; Hirachi, Y. ; Hirokawa, J.
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This paper proposes a cost-effective antenna package suitable for the mobile terminal of the wireless file-transfer system. The antenna package provides the end-fire radiation from the open-ended post-wall waveguide built into the side of the package. The antenna package, in which a 60-GHz CMOS chip is attached, is mounted on the edge of a printed circuit board by the ball-grid-array assembly. The fabricated antenna, to be built in the package, had the size of 4.8 mm × 6.4 mm × 1.0 mm. The beamwidths of 120° (E-plane) and 72° (H-plane) and the gain of 2.2 dBi were measured at 60 GHz. The cost-effective antenna package with two antennas for the transmitter (Tx) and the receiver (Rx) was fabricated. The isolation between the Tx and Rx antenna was measured to be greater than 36 dB in the frequency range of 59-66 GHz. Moreover, the antenna with higher gain required from the system was fabricated. The gain of 6 dBi in the range of 58-68 GHz was measured. The beamwidth of 60° (E-plane) and 30° (H-plane) at 60 GHz were measured, respectively.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:58 ,  Issue: 12 )