自主振盪形式的主動天線應用於UHF RFID讀取與接收

An Autonomous Oscillator-typed Active Antenna Applied for UHF RFID Reader Receiving

林定緹(Ting-Ti Lin)

指導教授 ： 江青瓚

共同指導教授 ： 劉智群(Ji-Chyun Liu)

健行科技大學/電資學院/電機工程系碩士班/碩士(2016年)

摘要

本文設計是以太陽能電池陣列和UHF RFID的讀取接收技術，有效應用在DC電力操作振盪器類型的一個主動天線，所提出的自主振盪器類型的主動天線，它包括一Colpitts振盪器、線圈天線和太陽能電池陣列並，結合E類(Class E)功率放大器和Colpitts振盪器，組合形成了E類Colpitts振盪器。因此本文將針對共基極（CB），共射極（CE）和CE與 (CB with ) ，E類Colpitts振盪器做一個詳細的探討和比較。這三種Colpitts振盪器在應用上各有其特色。
首先，針對I-V曲線、最大功率和效率的特性進行測試，並評估該太陽能電池陣列的討論。而太陽能電池的電壓的變動，對639.4〜646.3/849.4〜856.8 MHz與1003.5 ~ 1017.4 MHz的頻率和2〜78,78〜80mW和8.5 ~ 12.5mW的輸出功率為E類CB/ CE/ CE with Colpitts振盪器中所產生的效率。且2 ~ 65%,65〜72％和34 ~ 70 %的振盪器的DC-RF轉換效率都為E類CB / CE與CE with 的Colpitts振盪器獲得。三個自主振盪型式的主動天線，可應用於超高頻(UHF) RFID的讀取與接收技術。

關鍵字

主動天線 ； 振盪器 ； 太陽能電池 ； 綠能天線

並列摘要

The thesis designs an oscillator-typed active antenna operated with an effective DC power of the solar-cell array for UHF RFID reader receiving technique. The proposed autonomous oscillator-typed active antennas consist of a Colpitts oscillator, the coil antenna and the solar-cell array. Combining the class E power amplifier and the Colpitts oscillators, the class E Colpitts oscillator is obtained. The common base (CB), common emitter (CE), and CE with class E Colpitts oscillator are proposed and compared. Three Colpitts oscillators have individual characteristics for applications.
The characteristics of I-V curve, maximum power and efficiency are measured and discussed for evaluating the solar-cell arrays oscillator-typed active antenna. Variation with solar-cell voltages, the frequencies of 639.4 ~ 646.3 MHz, 849.4 ~ 856.8 MHz and 1003.5 ~ 1017.4 MHz and the output power of 2 ~ 78 mW, 8 ~ 80 mW and 8.5 ~ 12.5 mW are obtained for class E CB, CE and CE with Colpitts oscillator antennas respectively. The oscillator DC-to-RF conversion efficiencies of 2 ~ 65%, 15 ~72% and 34 ~ 70 % are achieved for individual antennas. Three autonomous oscillator-typed active antennas can be applied for UHF RFID reader receiving technique.

並列關鍵字

Active Antenna ； Oscillator-typed ； Solar Cell ； Green Antenna

參考文獻

1. M. Tanaka, Y. Suzuki, K. Araki and R. Suzuki. “Microstrip antenna with solar cells for microsatellites,” Electronics Letters, Volume 31, Issue 1, pp. 5-6, Jan. 1995.

2. S. Vaccaro, P. Torres, J. R. Mosig, A. Shah, J. F. Zurcher, A. K. Skrivervik, P. de Maagt, L. Gerlach. “Stainless steel slot antenna with integrated solar cells,” Electronics Letters, Volume 36, Issue 25, pp. 2059-2060, Dec. 2000.

3. N. Henze, A. Giere, H. Fruchting, P. Hofmann. “GPS Patch Antenna with Photovoltaic Solar Cells for Vehicular Applications,” Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th, Volume 1, pp. 50-54, Oct. 2003.

4. N. Henze, A. Giere, H. Fruchting, P. Hofmann. “GPS Patch Antenna with Photovoltaic Solar Cells for Vehicular Applications,” Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th, Volume 1, pp. 50-54, Oct. 2003.

5. Shynu S.V, Maria J. Roos Ons, Giuseppe Ruvio, Max J. Ammann, Sarah McCormack, Brian Norton. “A microstrip printed dipole solar antenna using polycrystalline silicon solar cells,” Antennas and Propagation Society International Symposium, 2008. AP-S 2008 IEEE, pp. 1-4, July. 2008.