| DC 欄位 |
值 |
語言 |
| DC.contributor | 電機工程學系 | zh_TW |
| DC.creator | 簡宏霖 | zh_TW |
| DC.creator | Hong-Lin Jian | en_US |
| dc.date.accessioned | 2018-7-23T07:39:07Z | |
| dc.date.available | 2018-7-23T07:39:07Z | |
| dc.date.issued | 2018 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=105521097 | |
| dc.contributor.department | 電機工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 隨著頻率的增加，電磁波傳遞於空氣時的損耗也逐漸增加，故需要更高增益的天線補償能量傳遞於空氣時的路徑損耗，除了電磁波於空氣中的路徑損耗之外，將天線主波束對準用戶端，使訊號準確的傳送訊號至用戶端，降低天線幅射能量往非必要的方向傳遞，造成能量不必要的消耗與其他方位訊號的干擾。切換波束陣列使用多個單元天線，具有提高增益的功能，再者，切換波束陣列擁有多個輸入端，當輸入端個別饋入時，即可幅射特定方向主波束，故切換波束陣列具有產生多個不同主波束方向的功能，使用相對應的輸入端輸入訊號使其產生的主波束對準用戶端。
本論文設計應用於第五代行動通訊韓國暫定高頻段(28 GHz)與軍方使用頻段(10 GHz)的改良切換波束陣列，使用改良後的耦合器製作與傳統巴特勒輻射方向不相同的切換波束陣列，提供切換波束天線陣列更多的選擇。
使用改良耦合器，可製作波束方向±18 deg的雙波束切換天線陣列與波束方向±9 deg、±49 deg的四波束切換波束陣列。 | zh_TW |
| dc.description.abstract | With increasing frequency, the loss of electromagnetic wave propagated in air also gradually increases. Therefore, higher-gain antenna is required to compensate path loss when energy propagates through the air. Transmitting the signal accurately to the users and reducing the antenna radiation energy to pass in an unnecessary direction can reduce unnecessary consumption of energy and interference with other users. The switching antenna array using many antennas has an advantage in improving gain. Furthermore, it has multiple inputs. When one of the inputs is excited, the main beam in a specific direction can be formed. Therefore, the switching antenna array has different main beam directions corresponding to different input signals.
This thesis proposes a design of modified switch antenna array for the fifth-generation mobile-communication Korea′s tentative high-frequency band (28 GHz) and military band (10 GHz), using modified couplers to make switched antenna array with different directions from traditional Butler radiation. Using the modified coupler, a dual-beam switching array of ±18 deg, and a four-beam switching array of ±9 deg and ±49 deg can be fabricated. | en_US |
| DC.subject | 第五代行動通訊 | zh_TW |
| DC.subject | 波束切換天線陣列 | zh_TW |
| DC.title | 應用於X頻段與Ka頻段系統之波束切換天線陣列設計 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Design of Switch Antenna Array for X-Band and Ka-Band Systems | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |