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V-Band On-Chip Dipole-Based Antenna

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3 Author(s)
I-Shan Chen ; Dept. of Electr. Eng., Nat. Central Univ., Jhongli, Taiwan ; Hwann-Kaeo Chiou ; Nan-Wei Chen

A V-band on-chip dipole-based antenna for 60 GHz wireless personal area network (WPAN) application is implemented using WIN 0.15 mum pHEMT process. The fabricated antenna has a compact size of 0.9 mm2, including test pads. The antenna comprises a half-wavelength dipole element and two tilted and slotted dipole elements to realize a wider impedance bandwidth than conventional wire dipole antennas, and provides endfire radiation patterns with high front-to-back ratio. The antenna performance is characterized using S-parameter, two-antenna (identical), three-antenna, and radiation pattern measurement methods for return loss, transmission gain, absolute gain, and radiation patterns. Measurement results shows that the on-chip antenna achieves a VSWR = 2 fractional bandwidth of 24% (55 to 70 GHz), a transmission gain of - 32 dB (the separated distance R = 5 cm), an absolute gain of 3.6 dBi, a front-to-back ratio of 12 dB, and an half-power beamwidth of 60deg in E-plane and H-plane. The measured and simulated results are shown in good agreements.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:57 ,  Issue: 10 )