Multiplex communications – Wide area network – Packet switching
Patent
1983-02-25
1985-09-03
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
333122, H04J 1500
Patent
active
045396817
ABSTRACT:
A modulator system for converting a three-channel input microwave signal to a single-channel output microwave signal is formed of two microwave sections which are joined together at both their inputs and their outputs by hybrid circuits, one of which serves as a power divider and the other which serves as a power combiner. Each of the microwave sections includes a pair of couplers which are joined by a Faraday rotator. First and second microwave input signals are applied to a first port of an input coupler in each of these sections. A third microwave signal is connected by the hybrid divider to a second input port in the input couplers of each of the microwave sections. Polarization of the third signal is vertical and is maintained through the two sections. Polarization of the first and second signals is horizontal and is maintained through the two sections. With activation of the rotator, a shift in polarization occurs resulting in appearance of the signals in both the horizontal and vertical components of an output coupler in each of the sections. The vertical component of the output couplers in each of the sections is combined by the hybrid combiner to produce the single-channel microwave signal. Synchronous detectors are utilized for subsequent extraction of the first and second input signals, the synchronous detectors and the Faraday rotators being driven by common sources of modulation signals wherein the rotator in one section in modulated at a rate different from the rotator in the second section.
REFERENCES:
patent: 3368861 (1968-02-01), Rubinstein et al.
patent: 3956699 (1976-05-01), Leahy
patent: 4385378 (1983-05-01), Kreutel
Hudspeth Thomas
Rosen Harold A.
Steinberg Fritz
Benman, Jr. William J.
Hughes Aircraft Company
Karambelas Anthony W.
Olms Douglas W.
LandOfFree
Ferrite modulator assembly for beacon tracking system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ferrite modulator assembly for beacon tracking system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ferrite modulator assembly for beacon tracking system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-617508