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  4. Design of Wideband, High-Gain Antennas on Package
 
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Design of Wideband, High-Gain Antennas on Package

Date Issued
2013
Date
2013
Author(s)
Cheng, Jyun-Yuan
URI
http://ntur.lib.ntu.edu.tw//handle/246246/264327
Abstract
In this thesis, we use the antenna-on-package (AoP) solution for integration of antennas with packages. Three types of antennas that are suitable for the AoP structure are presented. First, we proposed the modified short backfire antenna (modified SBA) that fits the AoP structure and is suitable for mass production. Second, the waveguide-coupled two-element U-slotted patch array is presented. Here we use two U-slotted patch antennas that are excited in phaseso that the fields at the zenith interfere constructively, and hence we canobtain the high-gain antenna. Finally, we extend the array from two elements to four elements. The waveguide-coupled four-element U-slotted patch array is proposed to achieve an even-higher-gain property. The three types of antennas have a high-gain property and their fractional bandwidth can achieve 15% (defined by the 60-GHz band). Furthermore, the gain spectra of the three antennas exhibit quite smooth responses in the matched bands. In this thesis,we design antennas in the frequency band whose center frequency is at around 7.5 GHz for quicker and easier verification. The results of the prototype antennas are limited by the resonant property of the coupling slot on the evaluation board (EVB). The measured bandwidth of the modified short backfire antenna is 13.51%, and its peak gain is 8.32 dBi. The measured bandwidth of the waveguide-coupled two-element U-slotted patch array is 11.34%, and its peak gain is 10.69 dBi. The measured bandwidth of the waveguide-coupled four-element U-slotted patch array is 13.86%, and its peak gain is 12.2 dBi. However, the consistency between the simulated results and the measured results of the prototype antennas with the EVBs provides us with confidence for the feasibility of our designs.
Subjects
封裝天線
60-GHz頻帶
短背射天線
U形開槽貼片天線
貼片天線陣列
Type
thesis
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