Description of a differential pulse-frequency modulator

作     者：Karybakas, CA Tombras, GS 

作者机构：Aristotelian Univ Salonika Dept Phys Lab Elect & Comp GR-54006 Salonika Greece Univ Athens Dept Phys Elect Lab Athens 15784 Greece 

出 版 物：《ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING》 (模拟集成电路和信号处理)

年 卷 期：1999年第19卷第3期

页      面：295-301页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：asynchronous delta modulation voltage-controlled oscillator pulse-frequency modulation differential pulse-frequency modulation 

摘      要：The operation of a novel differential pulse-frequency modulator based on the Asynchronous Delta Modulation principle is described in this paper. The complete modulator consists of a Voltage Controlled Oscillator (VCO) in a feedback configuration and generates an output pulse train whose frequency is proportional to the slope of the input signal. It is shown that the proposed system allows substantially larger input signal amplitudes for linear operation than those permitted by open loop VCO schemes or other voltage-to-frequency converters. In addition, the feedback path provides locally a signal that tracks the input, so that the feedback arrangement can be readily used as a demodulator at the receiver end.