Patent · US Expired

Duplex microwave radio communication system

US4232318A · kind A · utility

12Cited by

3References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Friedbert Becker · Lexington, US
Gunter Biethan · Schwanau, DE
Peter Kloeber · Munich, DE

Key dates

Filing date	Sep 29, 1978
Grant date	Nov 4, 1980
Priority date	—
Expiry date	Sep 29, 1998

Classification

Technology area (CPC H)Electricity
CPC primaryH04B7/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A duplex microwave radio communication and telemetry system for transmitting analog and digital data between fixed stations as well as to mobile stations wherein the microwave oscillator is stabilized by utilizing a free running oscillator which is controlled in frequency with the incoming modulation input and the output of the free running oscillator is supplied to a phase comparator and to a multiplier and the multiplier supplies an output to a mixer which also receives a portion of the input from the microwave oscillator and supplies an input to the phase comparator to provide a control signal for controlling the frequency of the microwave oscillator.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.