Design of WLAN/WiMAX and TPMS Antennas

• Main Authors: Shiau_Yu Lee, 李効諭
• Other Authors: 余政杰
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/9kp5ew

碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 96 === The proposed WLAN/WiMAX hybrid antenna is comprised of an asymmetric rectangular patch with additional appropriately-located strips. The simulation and measurement results show that the -10 dB return loss bandwidth for both the 2.4/5.2/5.8 GHz WLAN and 2.5/3.5/5.5 GHz WiMAX bands can be simultaneously covered. Moreover, the antenna gains at 2.45 GHz, 3.55 GHz, and 5.85 GHz are measured to be 4.596 dBi, 3.126 dBi, and 5.42 dBi, respectively. As to the TPMS antenna，this thesis first investigates the effects of various dimensional parameters on the performance of a published 315 MHz meander line-based EMC antenna which has a length of a quarter wavelength or so. Then, with the aid of the knowledge extracted from the performance analysis of the published 315 MHz meander line-based EMC antenna and in the hope of more practicality regarding both the antenna length and -10 dB return loss bandwidth, one 315 MHz and one 433.92 MHz EMC antennas with lengths of about an eighth wavelength are designed, simulated, and measured.