車內整合式平面天線之研究

A Study of Integrated Planar Antenna for Vehicles

杜俊毅(Chun-Yi Tu)

指導教授 ： 李學智

國立臺灣大學/電機資訊學院/電信工程學研究所/碩士(2007年)

https://doi.org/10.6342/NTU.2007.01604

摘要

本論文之研究主題乃是對車輛天線系統做一根本性的探討，並設計整合式的車輛天線系統，頻段範圍主要涵蓋車輛在數位電視、通信、衛星導航及無線網路等方面的應用，天線系統有多個輸出端子，可以直接連上不同頻段的收發機。
進行的工作項目有：探討整合式天線的可能架構並評估各種架構的優缺點及條件限制；探討可以放置平面天線的可能位置；探討是否可能改變車殼材質以利天線的整合設計；針對各頻段應用設計合乎規格需求的平面式天線，並整合各頻段之平面式天線於單一電路板上。
本研究利用SEMCAD-X電磁模擬軟體進行天線及車體的模擬分析，並在有車體影響的模擬環境中設計各種頻段之天線，接著進行各天線之間的整合工作，藉由不同的配置佈局架構，觀察反射損失模擬結果對於天線共振頻帶的影響。
最後，根據模擬設計的結果，實際製作出整合式的平面天線，並將其架設於無反射微波暗室中進行天線量測工作，量測整合式平面天線在車頂模型上之反射損失與輻射場形。由實際量測結果驗證了車內整合式平面天線之可行性，本論文的研究成果對於車輛的天線設計，可以提出全新的設計理念。

關鍵字

整合式車輛天線系統 ； 車輛天線 ； 整合式天線 ； 多頻帶天線 ； 寬頻天線 ； 平面天線

並列摘要

The main theme of this study is to make a fundamental discussion of vehicle antenna systems and to design an integrated vehicle antenna system. The frequency bands cover the applications of DTV, GSM, DCS, GPS, and WLAN. The designed antenna system has multiple output ports and each port can be directly connected to different transceivers.
The tasks to be investigated include: possible architectures of the integrated antenna systems and their advantages and limitations; possible locations for placing the antenna; feasibility of replacing part of the car body with materials suitable for antenna design; design of planar antennas for different frequency bands and integration of them on a single circuit board.
In this study, SEMCAD-X was used to simulate antennas and car bodies, and design of planar antennas for different frequency bands was in the simulated environment with car body effect. Integration of these designed antennas subsequently proceeded. Based on different layouts, simulated results of return loss for the impacts on resonant bands were observed.
Finally, according to the simulated results, an integrated planar antenna was actually fabricated. It was measured in an anechoic chamber to obtain return loss and radiation pattern of the integrated planar antenna on a car roof model. From the measured results, the feasibility of integrated planar antenna for vehicles was verified. Several new design concepts for vehicular antennas can be obtained in this thesis.

並列關鍵字

Integrated Vehicle Antenna Systems ； Vehicular Antennas ； Integrated Antennas ； Multi-band Antennas ； Broadband Antennas ； Planar Antennas

參考文獻

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