Accession Number:

ADD020395

Title:

A Multi-Function Modulator for Low-Powered, Wired and Wireless Command, Control, and Communications Applications

Descriptive Note:

Patent application, filed 24 Nov 2008

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

2008-11-24

Pagination or Media Count:

62.0

Abstract:

An amplitude, phase and frequency modulator circuit is provided with the circuit containing a periodically driven switch. The circuit connects a DC power source and a resistive load. Periodic operation of the switch generates a square-wave of voltage across the load. A transistor used as a switch is embedded in a switch driver that controls base current and base-emitter reverse bias voltage. The modulator DC input resistance is approximately equal to the load resistance when the switch ON-state period and OFF-state period are approximately equal. The modulator efficiency is nearly one hundred percent. The frequency response of the square-wave modulator system is high-pass with a lower cutoff frequency determined by element values.

Subject Categories:

  • Electrical and Electronic Equipment
  • Electric Power Production and Distribution

Distribution Statement:

APPROVED FOR PUBLIC RELEASE