利用雜訊抵消技術之手持式數位視訊廣播接收器之超高頻帶平衡不平衡轉換之低雜訊放大器設計

A NOISE CANCELING BALUN-LNA DESIGN FOR UHF BAND OF DVB-H RECEIVER

吳賀鏶(Ho-Chi Wu)

指導教授 ： 黃淑絹

大同大學/電機資訊學院/電機工程學系所/碩士(2009年)

摘要

本篇論文描述利用雜訊抵消技術之平衡不平衡轉換之低雜訊放大器設計，由於它具有低雜訊與低功率消耗的特性，所以適用於各類型手持式數位視訊廣播的產品，例如：行動電話、個人數位助理和其它手持式的系統。我們使用了疊接式共閘極-共源極放大器的電路架構，使得它擁有較佳的雜訊抑制能力，並藉由其主動平衡不平衡轉換的特性，我們可由單端的輸入訊號產生差動的輸出訊號，一方面使此低雜訊放大器連接到前端天線和下一級混波器更容易，另ㄧ方面可節省印刷電路板上的物件和達到更佳的雜訊指數。

此低雜訊放大器使用TSMC 0.18微米標準型互補式金氧半場效電晶體製程，在470百萬赫茲至890百萬赫茲的工作頻帶中，此低雜訊放大器擁有1.74 dB的雜訊指數與極佳的線性度，整個電路的功率消耗是11.84毫瓦，佈局面積為0.29毫米平方 。

關鍵字

雜訊抵消 ； 低雜訊放大器 ； 平衡不平衡轉換 ； 手持式數位視訊廣播

並列摘要

In this thesis, a noise canceling balun-LNA design is presented. It can achieve low noise figure, low power consumption and therefore is very suitable for DVB-H applications, such as mobile-phone, PDAs and the hand-held system.
This LNA is composed of cascode common-gate and common-source amplifier circuits, which provide a good noise canceling ability. In addition, its active balun characteristic can convert the single-in signal to differential-out signals. As a result, it can be easily connected to the antenna and mixer to save the components of PCB and also to achieve a better noise figure.

The LNA is implemented in TSMC 0.18 μm standard CMOS process. In 470 MHz to 890 MHz, it has good linearity while achieving low noise figure (1.74 dB). The power consumption is 11.84 mW, and the chip area is 0.29 mm^2.

並列關鍵字

noise canceling ； DVB-H ； balun ； LNA

參考文獻

[1] 陳慶永，手持式數位電視DVB-H技術簡介，新竹市，工研院電通所。

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[6] B. Razavi, Design of Analog CMOS Integrated Circuits, McGraw-Hill, 2001.

[7] S. C. Blaakmeer, E. A. M. Klumperink, D. M. W. Leenaerts and B. Nauta, “Wideband balun-LNA with simultaneous output balancing, noise-canceling and distortion-canceling,” IEEE J. Solid-State Circuits, vol. 43, no. 6, June 2008.

[10] F. Bruccoleri, E. A. M. Klumperink and B. Nauta, “Wide-band CMOS low-noise amplifier exploiting thermal noise canceling,” IEEE J. Solid-State Circuits, vol. 39, no. 2, Feb. 2004.