TRANSCEIVER MODULE AND COMMUNICATION DEVICE
PROBLEM TO BE SOLVED: To provide a transceiver module and a communication device that have a duplexer, a power amplifier, and a low-noise amplifier integrated, is small, and has noise performance improved.SOLUTION: A transceiver module 1 includes a duplexer 10 including a transmission side filter 10...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a transceiver module and a communication device that have a duplexer, a power amplifier, and a low-noise amplifier integrated, is small, and has noise performance improved.SOLUTION: A transceiver module 1 includes a duplexer 10 including a transmission side filter 10T and a reception side filter 10R, and an integrated power amplifier 20 and low-noise amplifier 30. On a Smith chart, impedance at a reception band in the case where the reception side filter 10R is viewed from a reception side terminal intersects with a line connecting an NF circle center point where a noise factor of the low-noise amplifier 30 is the minimum and a gain circle center point where a gain of the low-noise amplifier 30 is the maximum.SELECTED DRAWING: Figure 1
【課題】デュプレクサ、電力増幅器、および低雑音増幅器が一体化された、小型かつ雑音性能が改善された送受信モジュールおよび通信装置を提供する。【解決手段】送受信モジュール1は、送信側フィルタ10Tおよび受信側フィルタ10Rを有するデュプレクサ10と、一体化された電力増幅器20および低雑音増幅器30と、を備え、スミスチャートにおいて、受信側端子から受信側フィルタ10Rを見た場合の受信帯域におけるインピーダンスは、低雑音増幅器30の雑音指数が最小となるNFサークル中心点と、低雑音増幅器30の利得が最大となるゲインサークル中心点とを結ぶ線と交差する。【選択図】図1 |
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