幅移鍵控解調變電路

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

100130508

專利證號

I 482466

專利獲證名稱

幅移鍵控解調變電路

專利所屬機關 (申請機關)

國立中山大學

獲證日期

2015/04/21

技術說明

本電路係有關於一種可提供高可靠度解調訊號之幅移鍵控解調變電路。可藉由第一壓差產生電路及第二壓差產生電路，使得第一NMOS電晶體之第一閘極端及第二NMOS電晶體之第二閘極端之間產生明顯的電位差異，當半波整流器輸出之訊號為高電位，則第一閘極端之電位高於第二閘極端之電位，此時該緩衝器之輸出電位為高電位，反之，當半波整流器輸出之訊號為低電位，則第一閘極端之輸出電位低於第二閘極端之電位，此時緩衝器之輸出電位為低電位，藉由上述的電路設計，能有效獲得一具有高可靠度解調訊號之解調變電路。 An amplitude shift keying demodulator comprises a rectifier, an envelope restorer and a buffer. The rectifier comprises a signal input terminal, the envelope restorer is electrically connected with the rectifier and comprises a current mirror, a differential amplifier, a first potential difference generator and a second potential difference generator, wherein the differential amplifier comprises a first NMOS transistor and a second NMOS transistor electrically connected with the first NMOS transistor. The first potential difference generator is electrically connected with a first gate terminal of the first NMOS transistor of the differential amplifier, and the second potential difference generator is electrically connected with the second gate terminal of the second NMOS transistor of the differential amplifier. The buffer is electrically connected with the current mirror and the differential amplifier and comprises a signal output terminal.

備註

本部(收文號1070007387)同意該校107年1月23日中產營字第1071400099號函申請終止維護專利(中山)

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