GPS 衛星定位自2000 年以後，把SA 碼取消後，現在可以達到
十米以下的定位精度，造成GPS 相關產業的大幅成長。應用初期因
為積體電路的功耗高及體積大的關係，所以大部分應用在車用及工業
上做位置的追蹤及導航。近年來由於積體電路製程不斷的演進，功耗
及體積不斷的縮小下，個人隨身導航及本地應用服務也就有愈來愈多
的發展空間。PHS 是目前廣泛地被使用的數位電話規格，如果我們能
把GPS 及PHS 做個手持式裝置，在室內加上GPS 廣播信號，將可在
PHS 有效的範圍內做到人員及寵物的位置掌握，也可提供通信服務。
本篇論文主要內容為GPS 及PHS 雙頻天線的模擬及實作並量測, 實
測的結果為GPS 及PHS 頻帶的最高增益分別為 1dBi 及1.5dBi，另
外本篇論文也會針對GPS 的系統做一個整合及分析，因為此技術的
靈敏度需有一定的要求，才能於有效應用於衛星信號不夠強的地方，
經整合實際GPS 接收機，C/N 值最高可達44 以上，並有實際路測。

After USA government canceled SA code to stopping interference
end user in 2000, the GPS accuracy has been improved a lot. It makes the
GPS applications have a big growth. But issues about the size and power
consumption has confined the many GPS applications in car or industrial
areas. Due to the improvement of IC process for the past few years, the
size and power consumption won’t be a problem for GPS. The personal
navigation and LBS will have an opportunity to grow up. PHS technology
recently has been widely used for mobile communication. If we can
successfully combine GPS and PHS into one personal device, we can
expect it will be a very convenient application. It’s possible for us to
know the position object from a remote distance. The major goal of this
thesis is tried to simulate and measure the GPS and PHS dual band
antenna. The measured outcome of GPS and PHS peak gain is 1dB and
1.5dB respectively. Further, this thesis also introduces integration and
analysis of GPS receiver. As GPS is a very high sensitivity system, it is
easy to be interfered. After integrating the antenna to the real GPS
receiver, we can get a C/N value as 44dB/Hz.

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