Noise Temperature of Active Feedback Resonator (AFR) (Special Issue on Microwave and Millimeter-Wave Technology for Advanced Functioions and Size-Reductions)
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概要
- 論文の詳細を見る
An active feedback resonator (AFR) is a kind of circuit which functions as a high unloaded Q resonator. The AFR employs an active feedback loop which compensates for the energy loss of a conventional microwave resonator. Owing to an active element in the AFR, thermal noise should be taken into account when designing the AFR. In order to simplify a circuit design using the AFR we introduced noise temperature (T_n) for the AFR. In addition, we describe the AFR design which gives minimum noise temperature. Finally, the noise temperature, measured in an AFR as a band elimination filter, is compared with the theoretical value to evaluate the AFR.
- 社団法人電子情報通信学会の論文
- 1993-06-25
著者
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Ishikawa Youhei
Murata Manufacturing Company Limited
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Yamashita Sadao
Murata Manufacturing Company Limited
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Hidaka Seiji
Murata Manufacturing Company Limited
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- A Signal-to-Noise Enhancer with Extended Bandwidth Using Two MSSW Filters and Two 90° Hybrids
- Noise Temperature of Active Feedback Resonator (AFR) (Special Issue on Microwave and Millimeter-Wave Technology for Advanced Functioions and Size-Reductions)