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  • 學位論文

無線區域網路功率放大器及功率偵測器之設計與實作

Design and Implementation of Power Amplifier and Power detector for Wireless LAN

指導教授 : 陳少傑
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摘要


近年來,行動通訊快速的發展,使得無線網路越來越普遍。例如:IEEE 802.11a、802.11b、802.11g、Bluetooth 等等。本實驗室將利利用高整合性的互補式金氧電晶體(CMOS)製作無線區網802.11b之前端的傳送接收器,其射頻前端包括低雜訊放大器、混波器、可變增益放大器、低通濾波器、功率放大器及功率偵測器。 本論文著重於無線網路802.11b 的傳送器之設計與實作,包含功率放大器 (power amplifier)及功率偵側器 (power detector)。並利用台灣積體電路公司(TSMC)的0.25μm 的CMOS 製程,這樣的目的就是為了整合積體電路晶片而鋪路,也期望將能夠跟數位訊號處理的部分作整合。 在此所使用的功率放大器是將從混波器送出來的2.4GHz訊號放大,增強信號之輸出功率,使之輸出功率達到21dBm。再用功率偵測器精確的偵側出輸出功率,並將此輸出功率轉換為一電壓,回授至增益控制系統(本論文未提及)。如此一來,增益控制系統 可使傳送器之輸出功率更為準確。

並列摘要


Wireless application is more and more popular in recent years. For example: we have products on IEEE 802.11a, 802.11b, 802.11g and Bluetooth. Our Laboratory chooses the Wireless LAN 802.11b transceiver as the research target, which radio frequency circuits include low noise amplifier, mixer, VGA, low-pass filter, power amplifier, and power detector. The power amplifier and power detector are the research topics in this Thesis. We implement and simulate these circuits by using TSMC CMOS 0.25μm process. Hoping that we can carry out a system-on-chip for 802.11b in the future. The purpose of a power amplifier is to amplify the signal from a mixer to 21dBm, and we use a power detector to exactly detect the output power of the power amplifier. Our power detector transfers the output power in dB to a voltage in V, and feedback this voltage to the gain control system. In this way, the output power of a transmitter can be controlled more exactly.

參考文獻


REFRENCES
[3] B. Razavi, RF Microelectronics, Mc Graw Hill, 1998.
[4] B. Razavi, Design Analog CMOS Intefrated Circuits, Mc Graw Hill, 2001.
[5] D. M. Pozar, Microwave Engineering, 2nd edition, John Wiley & Sons,
[6] S. C. Cripps, RF Power Amplifiers for Wireless Communications, Artech House, 1999.

被引用紀錄


Gea, S. B. (2011). 應用於內建自我測試機制之V頻段互補式金氧半導體低雜訊放大器與寬頻射頻功率偵測器之研製 [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU.2011.10419

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