四相移鍵控解調變器

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

105113388

專利證號

I 604710

專利獲證名稱

四相移鍵控解調變器

專利所屬機關 (申請機關)

國立交通大學

獲證日期

2018/11/01

技術說明

本發明提供一種新穎的四相移鍵控(Quadrature Phase-Shift Keying ，QPSK)解調變器，稱為蝴蝶結四相移鍵控(Bowknot Quadrature Phase-Shift Keying ，BQPSK)解調變器，其是利用一延遲電路以延遲一蝴蝶結四相移鍵控訊號，將其與未延遲的蝴蝶結四相移鍵控訊號混合，以輸出一組IQ資料訊號，同時利用一相位旋轉電路，藉由該解調正交資料訊號以解出一回復時脈。本發明之一種蝴蝶結四相移鍵控解調變器不需要類比數位轉換器、也不需要擁有正交時脈的振盪器，而擁有高資料率、低功耗、架構簡單和可靠的好處，且其於數位或類比電路皆可實施。 A novel and reliable bowknot quadrature phase-shift keying (BQPSK) demodulator featuring a high data rate, low power, a simple architecture is proposed. The BQPSK demodulator can be realized by digital circuits to demodulate a wide-band BQPSK signal to accordingly output a demodulated I-data and Q-data. The BQPSK demodulator only includes a delay line and a decision maker. The delay line accepts the BQPSK signal to output the first and the second delayed signals. The decision maker mixes the BQPSK signal and the second delay signal to generate a transition signal, and mixes the input BQPSK signal and the first delayed signal to generate a data information signal. The decision maker uses the transition signal to sample the BQPSK signal to extract the I-data, and samples the data information signal to extract the Q-data. The BQPSK demodulator further includes a phase rotator to select the delay signals to generate a recovered clock by the demodulated I-data and Q-data.

備註

本會(收文號1120019924)同意該校112年4月7日陽明交大研產學字第1120010771號函申請終止維護專利(國立陽明交通大學)

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