公开(公告)号：US3638142A

公开(公告)日：1972-01-25

申请号：US3638142D

申请日：1970-07-20

Applicant: ERICSSON TELEFON AB L M

Inventor： WIDL WALTER HERBERT ERWIN ,  OLOFSSON ERIK HERBERT

IPC: H04L27/12 ,  H03C3/04

CPC classification number: H04L27/12

Abstract: A frequency modulator apparatus receives pulse signals switching between two amplitudes. The pulse signals are fed, via a modulator means which transmits square wave signals switching between two frequencies, to an integrator means. The integrator means converts the square wave signals to triangular-shaped signals which are then converted to substantially sinusoidal signals. There is also included means for compensating for the frequency dependent changes in amplitude of the signals introduced by the integrator means.

Abstract translation: 频率调制器装置接收在两个幅度之间切换的脉冲信号。 脉冲信号经由调制器装置馈入，该调制器将在两个频率之间切换的方波信号传送到积分器装置。 积分器意味着将方波信号转换为三角形信号，然后将其转换为基本正弦信号。 还包括用于补偿由积分器装置引入的信号的频率相关的幅度变化的装置。