摘要(英) |
A design of 100-GHz T-shaped patch antenna array using quartz-sub and flip-chip technology is proposed in the thesis. The proposed antenna array consists of two layers of quartz substrates. Using microstrip feeds into a C-slot, then the C-slot couples the signal into the radiating patch. By using the flip chip, two layers of quartz substrates are combined to achieve multi-layer metal structures. The use of C-slot is to offset the current characteristics for reducing the back radiation and then improving the front-to-back ratio of the antenna. In order to reduce size of the patch, the antenna with reduced dimensions in the horizonal and vertical directions are designed. Design of horizontally reduce-sized antenna, following original design, uses slot to extend the current path length to achieve antenna miniaturization; design of vertically reduce-sized antenna, following previous design with slot, uses additional stub to extend current path to attain more antenna miniaturization.
The proposed antenna array is realized with the quartz process provided by Taiwan Semiconductor Research Center Institute. Overall antenna array size is of 22.5×7.5×0.66 mm (7.5 λ0×2.5 λ0×0.22 λ0 at 100 GHz), and the single antenna element area is of 1.9 mm×1.9 mm. Measured results of antenna array show that the impedance bandwidth is 13.12% (91.66 GHz-104.53 GHz), gain is 13.84 dBi at 100 GHz, and the front-to-back ratio is 15.01 dBi. The horizontal reduce-sized T-shaped patch antenna area is of 1.2 mm×1.9 mm. Simulated results of antenna show that impedance bandwidth is 14.76% (94.93-110.06 GHz), gain is 7.63 dBi at 100 GHz, and the front-to-back ratio is 12.79 dBi; The vertical reduce-sized T-shaped patch antenna area is of 1.9 mm×1.5 mm. Simulated results of antenna show that impedance bandwidth is 17.16% (94.63-112.39 GHz), gain is 6.02 dBi at 100 GHz, and the front-to-back ratio is 14.71 dBi. |
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