標題: Coherent tunable filter apparatus and wireless communication front-end circuit thereof
作者: Kuo Chien-Nan
Shih Horng-Yuan
Pang Yi-Hsin
公開日期: 6-Dec-2011
摘要: A front-end circuit with coherent tunable filters is provided. The circuit includes a first filter, an amplifier, and a second filter. The amplifier is coupled to the first filter, and the second filter is coupled to the amplifier. Furthermore, the amplifier is placed between the first and second filters. The first filter has a first tunable intermediate frequency, and is used to filter a received signal. The amplifier is used to amplify the output of the first filter. The second filter has a second tunable intermediate frequency, and is used to filter the output of the amplifier. The first and second intermediate frequencies have a coherent-tuning relation with each other.
官方說明文件#: H03F003/04
H03F003/191
H04B001/16
H04B001/18
URI: http://hdl.handle.net/11536/104623
專利國: USA
專利號碼: 08073419
Appears in Collections:Patents


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  1. 08073419.pdf