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矩形負載電容微帶天線之第一共振頻率的分析 = The Analysis ...

國立高雄大學電機工程學系碩士班

矩形負載電容微帶天線之第一共振頻率的分析 = The Analysis of the First Order Resonant Frequency in a Capacitor-Loaded Rectangular Patch Antenna

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	The Analysis of the First Order Resonant Frequency in a Capacitor-Loaded Rectangular Patch Antenna
作者:	黃崑益,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	民99[2010]
面頁冊數:	101面圖，表 : 30公分;
標題:	反射係數與頻寬
標題:	Effect length L
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/66762071955749100884
摘要註:	之前很多學者曾經致力於將微帶天線操作在比原本還要低的一個工作頻率。也因此可以將微帶天線的尺寸，做得比原來操作頻率的面積還要更小。而以往這樣的技術雖然可以減少天線的面積，但是減少的比例是有限的；並且降頻固定無法微調。除此之外，放置負載電阻也會降低輻射效益。而若放置負載電容於輻射體與微帶天線的接地面間，除了允許微帶天線操作在比原本還要低的工作頻率外也並不因此降低輻射效益，這種形式的天線稱之為負載電容微帶天線。改變負載電容位置和負載電容值，事實上也連續不斷地改變了微帶天線的操作頻率，這樣的特性用在微帶天線上是有益的。負載電容微帶天線可以使用在原本傳統微帶天線面積不足之上，或者可以使用在需要調整操作頻率的設備上。在這篇論文中，負載電容的特性將在這裡被呈現。先設計出一個矩形負載電容微帶天線，裡面包含矩形負載電容微帶天線的參數、負載電容值及負載電容位置等聯合起來的關係模式。接著再固定矩形負載電容微帶天線的長度，去改變它的寬度。探討不同寬度間對第一階共振頻率的降頻變化、反射係數與頻寬的影響、等效長度之縮小化面積，並歸納出可控制頻率與天線匹配的理論模型，且實際應用之。 Previously, many studies have been devoted to make the patch antenna to operate at a frequency that is lower than the original operating frequency of the patch antenna. Equivalently, this means that to allow a patch antenna to operate at a size that is smaller than the required patch size. Although these techniques can usually reduce the size of the antenna, the reduce size is limited to a certain ratio. It can only provide a fixed frequency reduction that makes it hard to adjust effectively when the usable size of the handset changed. Except for the loaded resistance antenna, it is lower than the original radiation efficiency. It was found that by loading a capacitor between the radiator and ground of a patch antenna allows the patch antenna to operate at a frequency much lower than the original operating frequencies of the patch antenna capacitance of the loaded capacitor, one can virtually change the operating frequency of the patch antenna continuously. And for the loaded capacitor antenna, it is not reduction radiation efficiency. This characteristic has broadened the usefulness of traditional patch antenna, or can be used when one needs the operating frequency to be tunable in some large ranges. In this paper, the characteristics of the Capacitor-Loaded Rectangular Patch Antenna are presented. Besides, to change different width of the Capacitor-Loaded Rectangular Patch Antenna. It emphasis on First order resonant frequency, Reflection Coefficient, Bandwidth, Effect length L, Reduce the size of the antenna and Capacitor-Loaded Model.

矩形負載電容微帶天線之第一共振頻率的分析 = The Analysis of the First Order Resonant Frequency in a Capacitor-Loaded Rectangular Patch Antenna
黃, 崑益

矩形負載電容微帶天線之第一共振頻率的分析 = The Analysis of the First Order Resonant Frequency in a Capacitor-Loaded Rectangular Patch Antenna / 黃崑益撰 - [高雄市] : 撰者, 民99[2010]. - 101面 ; 圖，表 ; 30公分.
參考書目：面.
反射係數與頻寬Effect length L

矩形負載電容微帶天線之第一共振頻率的分析 = The Analysis of the First Order Resonant Frequency in a Capacitor-Loaded Rectangular Patch Antenna
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