Two-transmitter two-receiver antenna coupling unit for microwave digital radios

Patent metadata

Field	Value
Publication number	US-9954265-B2
Application number	US-201514951016-A
Country	US
Kind code	B2
Filing date	Nov 24, 2015
Priority date	Nov 26, 2014
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

An antenna coupling device is disclosed. The device includes a first isolator that includes an input port and an output port and a first circulator that includes a first port, a second port, and a third port. The first port of the first circulator is coupled with the output port of the first isolator; and the second port of the first circulator is configured for coupling with a first antenna. The device also includes a second isolator that includes an input port and an output port. The input port of the second isolator is coupled with the third port of the first circulator.

First claim

What is claimed is:

1. A device for routing microwave signals, comprising:
a first receiver filter that includes an input port and an output port;
a second receiver filter that includes an input port and an output port;
a first transmitter filter that includes an input port and an output port;
a second transmitter filter that includes an input port and an output port;
a first circulator that includes a first port, a second port, and a third port, wherein:
the first port of the first circulator is coupled with the output port of the first transmitter filter; and
the third port of the first circulator is coupled with the output port of the second transmitter filter;

a second circulator that includes a first port, a second port, and a third port, wherein:
the second port of the second circulator is coupled with the input port of the first receiver filter; and
the third port of the second circulator is coupled with the input port of the second receiver filter; and

a third circulator that includes a first port, a second port, and a third port, wherein:
the first port of the third circulator is coupled with the second port of the first circulator; and
the third port of the third circulator is coupled with the first port of the second circulator.

2. The device of claim 1 , wherein the first circulator is configured to route radio-frequency or microwave signals received through the first port of the first circulator to the second port of the first circulator and route radio-frequency or microwave signals received through the third port of the first circulator to the first port of the first circulator.

3. The device of claim 1 , wherein the second circulator is configured to route radio-frequency or microwave signals received through the first port of the second circulator to the second port of the second circulator and route radio-frequency or microwave signals received through the second port of the second circulator to the third port of the second circulator.

4. The device of claim 1 , wherein the second port of the third circulator is configured for coupling with an antenna.

5. The device of claim 1 , further comprising:
a first isolator that includes an input port and an output port, wherein:
the input port of the first isolator is coupled with the output port of the first receiver filter;

a second isolator that includes an input port and an output port, wherein:
the input port of the second isolator is coupled with the output port of the second receiver filter;

a third isolator that includes an input port and an output port, wherein:
the output port of the third isolator is coupled with the input port of the first transmitter filter; and

a fourth isolator that includes an input port and an output port, wherein:
the output port of the fourth isolator is coupled with the input port of the second transmitter filter.

6. The device of claim 5 , wherein each isolator is a circulator that includes a first port, a second port, and a third port, wherein only one of the first port, the second port, and the third port is terminated with a matched load.

7. The device of claim 5 , wherein:
the output port of the first receiver filter is coupled with a first receiver through the first isolator;
the output port of the second receiver filter is coupled with a second receiver through the second isolator;
the input port of the first transmitter filter is coupled with a first transmitter through the third isolator; and
the input port of the second transmitter filter is coupled with a second transmitter through the fourth isolator.

8. The device of claim 1 , wherein at least one of the first receiver filter, the second receiver filter, the first transmitter filter, and the second transmitter filter is a tunable filter.

9. The device of claim 1 , wherein the first circulator, the second circulator, and the third circulator are formed using a single plate.

10. The device of claim 1 , further comprising:
a third receiver filter that includes an input port and an output port;
a fourth receiver filter that includes an input port and an output port;
a third transmitter filter that includes an input port and an output port;
a fourth transmitter filter that includes an input port and an output port;
a fourth circulator that includes a first port, a second port, and a third port, wherein:
the first port of the fourth circulator is coupled with the output port of the third transmitter filter; and
the third port of the fourth circulator is coupled with the output port of the fourth transmitter filter;

a fifth circulator that includes a first port, a second port, and a third port, wherein:
the second port of the fifth circulator is coupled with the input port of the third receiver filter; and
the third port of the fifth circulator is coupled with the input port of the fourth receiver filter;

a sixth circulator that includes a first port, a second port, and a third port, wherein:
the first port of the sixth circulator is coupled with the second port of the fourth circulator;
the third port of the sixth circulator is coupled with the first port of the fifth circulator; and
the second port of the third circulator and the second port of the sixth circulator are coupled with a splitter.

11. The device of claim 10 , wherein the fourth circulator is configured to route radio-frequency or microwave signals received through the first port of the fourth circulator to the second port of the fourth circulator and route radio-frequency or microwave signals received through the third port of the fourth circulator to the first port of the fourth circulator.

12. The device of claim 10 , wherein the fifth circulator is configured to route radio-frequency or microwave signals received through the first port of the fifth circulator to the second port of the fifth circulator and route radio-frequency or microwave signals received through the second port of the fifth circulator to the third port of the fifth circulator.

13. The device of claim 10 , further comprising:
a fifth isolator that includes an input port and an output port, wherein:
the input port of the fifth isolator is coupled with the output port of the third receiver filter;

a sixth isolator that includes an input port and an output port, wherein:
the input port of the sixth isolator is coupled with the output port of the fourth receiver filter;

a seventh isolator that includes an input port and an output port, wherein:
the output port of the seventh isolator is coupled with the input port of the third transmitter filter; and

an eighth isolator that includes an input port and an output port, wherein:
the output port of the eighth isolator is coupled with the input port of the fourth transmitter filter.

14. The device of claim 1 , further comprising:
a third receiver filter that includes an input port and an output port;
a fourth receiver filter that includes an input port and an output port;
a third transmitter filter that includes an input port and an output port;
a fourth transmitter filter that includes an input port and an output port;
a fourth circulator that includes a first port, a second port, and a third port, wherein:
the first port of the fourth circulator is coupled with the output port of the third transmitter filter; and
the third port of the fourth circulator is coupled with the output port of the fourth transmitter filter;

a fifth circulator that includes a first port, a second port, and a third port, wherein:
the second port of the fifth circulator is coupled with the input port of the third receiver filter; and

Assignees

• Zte Corp

Inventors

• Shen Ying
• Nealis Edwin John
• Li Zhuo
• Feng Zhiping
• Nguyen Thanh Hung

Classifications

• H01P1/36

  Isolators · CPC title

• H01P1/2138 Primary

  using hollow waveguide filters (H01P1/2131 takes precedence) · CPC title

• H01P1/39

  Hollow waveguide circulators · CPC title

• H04B10/40

  Transceivers · CPC title

• H04B1/40 Primary

  Circuits · CPC title