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A compact-range wireless access system in the 60 GHz-band has been proposed for multi-Gb/s data transfer. Large array antennas adopting in the transmitter operate in their near-field regions, and provide us with a large communication zone and a pure propagation environment. However, intersymbol interference (ISI) may significantly degrade the system performance especially when the receiver is close...
A compact range wireless access system in the 60 GHz-band has been proposed for multi-Gb/s data transfer. A prototype GATE (Gigabit Access Transponder Equipment) was made to evaluate the coverage as well as the system performance of received power, bit-error rate (BER) and signal-to-noise ratio. Originally, the double-layer corporate-feed waveguide slot arrays with different number of elements were...
The double-layer corporate-feed hollow waveguide slot array antenna with 12×16 elements is fabricated by the powder metal laser process in the 60GHz band. The symmetrical feed circuit for 12×16 elements is designed by introducing cross junctions and asymmetrical T-junction. We design that the bandwidth for VSWR less than 1.2 is 9.63% and the maximum deviation from 58GHz to 65GHz is 1.34dB in amplitude...
We fabricate and measure three types of double-layer slotted waveguide array antennas by diffusion bonding of laminated thin metal plates. Etching metal plates gives high precision at low cost and diffusion bonding gives perfect electrical connection in the slotted waveguide array in millimeter-wave bands. Corporate feed is adopted to increase the bandwidth of a series-fed array antenna. A 38GHz antenna...
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