An Integrable Image Rejection System Using a Complex Analog Filter with Variable Bandwidth and Center Frequency Characteristics(<特集>Special Section on Analog Circuit Techniques and Related Topics)
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概要
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In this paper, we discuss an IF image rejection system with variable bandwidth and center frequency. The system is consists of a pair of frequency mixers multiplied by the complex sinusoid and a complex analog filter. By employing the complex leapfrog structure using OTA-C configuration and the frequency transformation from the normalized LPF, the proposed system is capable of variable bandwidth and center frequency characteristics. SPICE simulations result more than 43 [dB] image rejection is achieved for 6 [kHz] and 12 [kHz] bandwidths at 50 [kHz] IF.
- 社団法人電子情報通信学会の論文
- 2002-02-01
著者
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Hoshikawa H
Hokkaido Central Fisheries Experimental Station Hokkaido
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Hoshikawa Hiroshi
Department Of Applied Physics Waseda University
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MUTO Cosy
Department of Telecommunications, Takuma National College of Technology
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Muto Cosy
Department Of Telecommunications Takuma National College Of Technology
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