WLAN/WiMAX與TPMS天線之設計

Design of WLAN/WiMAX and TPMS Antennas

李効諭(Shiau_Yu Lee)

指導教授 ： 余政杰

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2008年)

https://doi.org/10.6841/NTUT.2008.00322

摘要

本論文設計兩種無線應用所需之平面天線，第一部份是無線區域網路(WLAN)/全球互通微波存取(WiMAX)天線，第二部份為胎壓監測系統(TPMS)天線。
WLAN/WiMAX天線由非對稱矩形金屬導體與額外微帶區塊所構成，其模擬與量測-10 dB返迴損耗(Return Loss)頻寬涵蓋2.4/5.2/5.8 GHz WLAN頻帶，及2.5/3.5/5.5 GHz WiMAX頻帶，量測結果顯示此WLAN/WiMAX天線頻寬達5.59 GHz (= 7.92 GHz – 2.33 GHz)，且在2.45 GHz，3.55 GHz，以及5.85 GHz之天線增益值分別為4.596 dBi，3.126 dBi，以及5.42 dBi。
關於TPMS平面天線之設計，此論文先針對國際學術文獻上所發表之四分之一波長左右之315 MHz折繞式電磁相容天線做模擬上的探討，以了解各參數對天線性能之影響。最後再設計長度為八分之一波長左右之315 MHz與433.92 MHz折繞式電磁相容天線，以使天線長度與-10 dB Return Loss頻寬均能較為滿足實務應用需要。

關鍵字

天線 ； 胎壓偵測系統

並列摘要

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.

並列關鍵字

Antenna ； TPMS

參考文獻

[9] M. Zheng, Q. Chen, Hall, P.S., and Fusco, V.F.:

　　“Broadband microstrip patchantenna on micromachined

pp. 1015-1016, 2006.

fed rectangular microstrip antenna on electrically

thick substrate,” Microwave Opt. Technol. Lett., 6,