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研究生:蕭鴻晟
研究生(外文):hang-chang hsiao
論文名稱:改良式Gm-C濾波器應用於WCDMA
論文名稱(外文):A Modified Gm-C Filter for WCDMA
指導教授:黃柏鈞黃柏鈞引用關係
指導教授(外文):po-chiun hunag
學位類別:碩士
校院名稱:國立清華大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:英文
論文頁數:52
中文關鍵詞:濾波器
外文關鍵詞:Filter
相關次數:
  • 被引用被引用:0
  • 點閱點閱:169
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Abstract
The third generation wireless communication systems (3G) prevail over the market recently.
This is because the 3G systems provide higher data rate than the traditionally 2G ones. The direct
conversion receiver is a possible solution due to low-power, low-cost requirement. Channel-select
filter is a crucial building block since it has to define the desired signal bandwidth and attenuate
the out-band interference to reduce the dynamic range requirement of ADC.
The First chapter describes the channel-select filter in different receiver architectures. Basic
theories of the WCDMA system and analog filter are introduced in chapter 2.
Chapter 3 presents the modified gm-C architecture for CMOS continuous time filter design.
It achieves high linearity under low supply voltage operation. The filter is suitable for fully
integrated wireless receivers, like WCDMA system 1.92MHz signal bandwidth.
The simulation results of Six-order Butterworth channel-select filter based on modified gm-C
structure is illustrated. The filter is realized on TSMC 1P6M CMOS process. The filter linearity is
simulated under the out-band two tone test condition. spurious free dynamic range is 62 dB under
1.8V supply voltage.
i
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