Accession Number:

ADD012893

Title:

Remote Transmitter Control System.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1986-08-12

Pagination or Media Count:

6.0

Abstract:

A remote transmitter system including a control station and a remote transmitter station. The control station includes a variable frequency oscillator, a modulator, a parallel to series digital data converter and a DC power supply. The remote transmitter station comprises a power storage circuit, a phase-locked-loop demodulator, a local oscillator, a modulator and a power amplifier. The variable frequency oscillator provides two signals f0 and f1 that are harmonics of each other and are in-phase. These signals modulate the 0s and 1s of digital data that is transmitted along a coaxial cable to the phase-locked-loop demodulator that provides a control signal to the local oscillator and the modulated digital data signal f0, f1 to the modulator. The local oscillator generates two signals fA and fB, that have a predetermined phase andor frequency relationship to f0 and f1. The f0 and f1 signals are detected and applied to the modulator as a control signal D0, D1 that generates a serial input signal fA, fB to the power amplifier and represents the binary data. The invention may be used with either phase modulation, or frequency modulation depending upon the design of the local oscillator. The two outputs fA and FB of the modulator can be designed to have any relationship of frequency for frequency modulation or phase for phase modulation. Patents

Subject Categories:

  • Command, Control and Communications Systems
  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE