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1.发明授权
公开(公告)号：EP0521403B1
公开(公告)日：1999-09-22
申请号：EP92110800.7
申请日：1992-06-26
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2.发明公开Radio receiver capable of suppressing a frequency drift in an intermediate frequency 失效FunkempfängermitUnterdrückungder Zwischenfrequenzdrift。
公开(公告)号：EP0521403A1
公开(公告)日：1993-01-07
申请号：EP92110800.7
申请日：1992-06-26
申请人： NEC CORPORATION , NIPPON TELEGRAPH AND TELEPHONE CORPORATION , NTT MOBILE COMMUNICATIONS NETWORK INC.
摘要： In a radio receiver for receiving a radio signal, a counter (32) counts an eventual intermediate frequency of an amplified signal based on a reference signal as a count datum. A frequency controller (27) controls a reference frequency of the reference signal according to the count datum. A reference oscillator (25) is controlled by the frequency controller to produce the reference signal. Receiving a radio signal by double superheterodyne, the radio receiver gives the eventual intermediate frequency to the amplified signal. In the amplified signal, the frequency controller suppresses an eventual frequency drift which results from frequency drifts of a first local oscillation and a second local oscillation. The radio receiver may be a single superheterodyne receiver.
摘要翻译： 在用于接收无线电信号的无线电接收机中，计数器（32）基于作为计数基准的参考信号对放大信号的最终中频进行计数。 频率控制器（27）根据计数基准来控制参考信号的参考频率。 参考振荡器（25）由频率控制器控制以产生参考信号。 无线电接收机通过双超外差接收无线电信号，给出放大信号的最终中频。 在放大信号中，频率控制器抑制由第一本地振荡和第二本地振荡的频率漂移引起的最终频率漂移。 无线电接收机可以是单个超外差接收机。
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