Nonfrequency-converting microwave radio repeater using a low power consumption amplifier
First Claim
Patent Images
1. In an angle-modulated microwave radio system, a nonfrequency-converting microwave radio repeater providing duplex operation for angle-modulated carrier signals F1 and F2, where F1 ≠
- F2, and having nonoverlapping modulation bands Δ
F1 and Δ
F2 said repeater comprising;
first input terminal receiving said F1 carrier and transmitting said F2 signal;
second input terminal receiving said F2 carrier and transmitting said F1 carrier;
first circulator coupling means connected to said first input terminal;
second circulator coupling means connected to said second input terminal;
a first bandpass filter having a bandwidth of Δ
F1 centered at F1 and having an input and output, said input coupled to said first circulator coupling means;
a second bandpass filter having a bandwidth of Δ
F2 centered at F2 and having an input and output, said output coupled to said first circulator coupling means;
a third bandpass filter having a bandwidth of Δ
F1 centered at F1 and an input and output, said output coupled to said second circulator coupling means;
a fourth bandpass filter having a bandwidth of Δ
F2 centered at F2 and an input and output, said input coupled to said second circulator coupling means; and
third circulator coupling means operatively connected to said first filter means output and to said first filter means output;
fourth circulator coupling means operatively connected to said second filter means input and to said third filter means input;
amplifier means having an input operatively connected to said third circulator coupling means and an output operatively connected to said fourth circulator coupling means, said amplifier means providing gain to at least the band of frequencies Δ
F1 and Δ
F2.
1 Assignment
0 Petitions
Accused Products
Abstract
A novel nonfrequency-converting microwave radio repeater for use in multichannel telecommunications is disclosed. A single microwave amplifier provides the requisite gain for two different angle-modulated radio frequency signals. Bandpass filters and circulators permit duplex operation by channeling the received signals through the repeater. The two radio frequency signals are amplified simultaneously in the same amplifier and then separated to be retransmitted at the same frequency in the proper path direction.
-
Citations
15 Claims
-
1. In an angle-modulated microwave radio system, a nonfrequency-converting microwave radio repeater providing duplex operation for angle-modulated carrier signals F1 and F2, where F1 ≠
- F2, and having nonoverlapping modulation bands Δ
F1 and Δ
F2 said repeater comprising;first input terminal receiving said F1 carrier and transmitting said F2 signal; second input terminal receiving said F2 carrier and transmitting said F1 carrier; first circulator coupling means connected to said first input terminal; second circulator coupling means connected to said second input terminal; a first bandpass filter having a bandwidth of Δ
F1 centered at F1 and having an input and output, said input coupled to said first circulator coupling means;a second bandpass filter having a bandwidth of Δ
F2 centered at F2 and having an input and output, said output coupled to said first circulator coupling means;a third bandpass filter having a bandwidth of Δ
F1 centered at F1 and an input and output, said output coupled to said second circulator coupling means;a fourth bandpass filter having a bandwidth of Δ
F2 centered at F2 and an input and output, said input coupled to said second circulator coupling means; andthird circulator coupling means operatively connected to said first filter means output and to said first filter means output; fourth circulator coupling means operatively connected to said second filter means input and to said third filter means input; amplifier means having an input operatively connected to said third circulator coupling means and an output operatively connected to said fourth circulator coupling means, said amplifier means providing gain to at least the band of frequencies Δ
F1 and Δ
F2.
- F2, and having nonoverlapping modulation bands Δ
-
2. In an angle-modulated microwave radio system, a nonfrequency-converting microwave radio repeater providing duplex operation for angle-modulated carrier signals F1 and F2, where F1 ≠
- F2, and having nonoverlapping modulation bands Δ
F1 and Δ
F2, said repeater comprising;first antenna means receiving said F1 signal and transmitting said F2 signal; second antenna means receiving said F2 carrier and transmitting said F1 carrier; first circulator coupling means connected to said first antenna means; second circulator coupling means connected to said second antenna means; a first bandpass filter having a bandwidth of Δ
F1 centered at F1 and having an input and output, said input coupled to said first circulator coupling means;a second bandpass filter having a bandwidth of of Δ
F2 centered at F2 and having an input and output, said output coupled to said first coupling circulator means;a third bandpass filter having a bandwidth of Δ
F1 centered at F1 and an input and output, said output coupled to said second circulator coupling means;a fourth bandpass filter having a bandwidth of Δ
F2 centered at F2 and an input and output, said input coupled to said second circulator coupling means; andthird circulator coupling means operatively connected to said first filter means output and to said fourth filter means output; fourth circulator coupling means operatively connected to said second filter means input and to said third filter means input; amplifier means having an input operatively connected to said third circulator coupling means and an output operatively connected to said fourth circulator coupling means, said amplifier means providing gain to at least the band of frequencies Δ
F1 and Δ
F2. - View Dependent Claims (3, 4, 5, 6, 7, 8, 14, 15)
- F2, and having nonoverlapping modulation bands Δ
-
9. In a frequency diversity angle-modulated radio system, a nonfrequency-converting radio repeater providing duplex operation for the west-to-east carrier signals F1 and F3, and for the east-to-west carrier signals F2 and F4, each modulated carrier signal, respectively, occupying the nonoverlapping modulation bands Δ
- F1, Δ
F3, Δ
F2 and Δ
F4, said frequency diversity repeater comprising;west antenna means receiving said F1 and F3 carrier signals and transmitting said F2 and F4 carrier signal; east antenna means receiving said F2 and F4 carrier signals and transmitting said F1 and F3 carrier signals; first circulator coupling means connected to said west antenna means; second circulator coupling means connected to said east antenna means; third circulator coupling means connected to said first circulator coupling means; fourth circulator coupling means connected to said second circulator coupling means; fifth circulator coupling means connected to said third circulator coupling means; sixth circulator coupling means connected to said fourth circulator coupling means; a first bandpass filter having a bandwidth of Δ
F1 centered at F1 and having an input and output, said input coupled to said first circulator coupling means;a second bandpass filter having a bandwidth of Δ
F2 centered at F2 and having an input and output, said input connected to said second circulator coupling means;a third bandpass filter having a bandwidth of Δ
F2 centered at F2 and having an input and output, said output connected to said third circulator coupling means;a fourth bandpass filter having a bandwidth of Δ
F1 centered at F1 and having an input and output, said output connected to said fourth circulator coupling means;a fifth bandpass filter having a bandwidth of Δ
F3 centered at F3 and having an input and output, said input connected to said fifth circulator coupling means;a sixth bandpass filter having a bandwidth of Δ
F4 centered at F4 and having an input and output, said input connected to said sixth circulator coupling means;a seventh bandpass filter having a bandwidth of Δ
F4 centered at F4 and having an input and output, said output connected to said fifth circulator coupling means;a eighth bandpass filter having a bandwidth of Δ
F3 centered at F3 and having an input and output, said output connected to said sixth circulator coupling means;seventh circulator coupling means connected to said first bandpass filter means output and to said second bandpass filter means output; eighth circulator coupling means connected to said third bandpass filter means input and to said fourth bandpass filter means input; first amplifier means having an input operatively connected to said seventh circulator coupling means and an output operatively connected to said eighth circulator coupling means, said amplifier means providing gain to at least the band of frequencies Δ
F1 and Δ
F2 ;ninth circulator coupling means connected to said fifth bandpass filer means output and to said sixth bandpass filter means output; tenth circulator coupling means connected to said seventh bandpass filter means input and said eighth bandpass filter means input; and second amplifier means having an input operatively connected to said ninth circulator coupling means and an output operatively connected to said tenth circulator coupling means, said amplifier means providing gain to at least the band of frequencies Δ
F3 and Δ
F4. - View Dependent Claims (10, 11, 12, 13)
- F1, Δ
Specification