Systems and Methods of Band Amplification with a Shared Amplifier

• US 20080212502A1
• Filed: 03/02/2007
• Published: 09/04/2008
• Est. Priority Date: 03/02/2007
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Xu, Xiangqing, Zhen, Liping
• Granted Patent: US 8,027,699 B2
• Time in Patent Office: Days
• US Class Current: 370/295
• CPC Class Codes: H03F 1/0277 Selecting one or more amplifiers from a plurality of amplifiers
• CPC Class Codes: H03F 3/602 Combinations of several amplifiers

Abstract

The present invention provides systems and methods for band amplification with a shared amplifier. In an exemplary embodiment, the wireless band amplification device has with an amplifier with an input port and an output port. The wireless band amplification device also provides two circulators, the first circulator in communication with the input port of the amplifier and the second circulator in communication with the output port of the amplifier. Additionally, two duplexer devices are provided in communication with both circulators. The input port of the amplifier is enabled to receive at least a first frequency band downlink signal and a first frequency band uplink signal. In an alternate embodiment, the input port of the amplifier can be further adapted to receive a second frequency band downlink signal and a second frequency band uplink signal. Additionally, the input port of the amplifier can be further adapted to receive a third frequency band downlink signal and a third frequency band uplink signal.

Claims

1. A band amplification device comprising:

an amplifier having a input port and an output port;

a first circulator in communication with the input port of the amplifier;

a second circulator in communication with the output port of the amplifier;

a first duplexer device in communication with the first circulator and the second circulator;

a second duplexer device in communication with the first circulator and the second circulator; and

wherein the input port of the amplifier is adapted to receive at least a first frequency band downlink signal and at least a first frequency band uplink signal.

2. The device of claim 1, wherein the input port of the amplifier is further adapted to receive a second frequency band downlink signal and a second frequency band uplink signal.

3. The device of claim 2, wherein the first frequency band is in an 800 MHz frequency range and the second frequency band is in a 900 MHz frequency range.

4. The device of claim 2, wherein the input port of the amplifier is further adapted to receive a third frequency band downlink signal and a third frequency band uplink signal.

5. The device of claim 4, wherein the first frequency band is in an 800 MHz frequency range, the second frequency band is in a 900 MHz frequency range, and the third frequency band is in a 1900 MHz frequency range.

6. The device of claim 2, further comprising a second amplifier having a input port in communication with a third circulator and a output port in communication with a fourth circulator, wherein the input port of the second amplifier is adapted to receive a third frequency band downlink signal and a third frequency band uplink signal.

7. The device of claim 6, wherein the first frequency band is in an 800 MHz frequency range, the second frequency band is in a 900 MHz frequency range, and the third frequency band is in a 1900 MHz frequency range.

8. A multi-band bidirectional amplification wireless telecommunication system comprising:

an amplifier;

a first circulator in communication with an input port of the amplifier;

a second circulator in communication with an output port of the amplifier;

a first duplexer device in communication with the first circulator and the second circulator;

a second duplexer device in communication with the first circulator and the second circulator; and

wherein the input port of the amplifier receives the downlink signals of at least three frequency bands and the uplink signals of at least three frequency bands.

9. The system of claim 8, wherein the at least three frequency bands include a first frequency band in an 800 MHz frequency range, a second frequency band in a 900 MHz frequency range, and a third frequency band in a 1900 MHz frequency range.

10. A multi-band amplification system comprising:

a first circulator in communication with an amplifier device;

a second circulator in communication with the amplifier device;

wherein the first circulator is enabled to route at least a first frequency band downlink signal and at least a first frequency band uplink signal to the amplifier device; and

wherein the second circulator is enabled to route the first frequency band downlink signal and the first frequency band uplink signal from the amplifier device for transmission.

11. The system of claim 10, further comprising a plurality of duplexers for passing the first frequency band downlink signal and the first frequency band uplink signal to and from the first circulator and the second circulator.

12. The system of claim 11, wherein the plurality of duplexers are enabled to receive and transmit the first frequency band downlink signal and the first frequency band uplink signal to and from a first antenna and a second antenna.

13. The system of claim 10, wherein the first circulator is further enabled to route a second frequency band downlink signal and a second frequency band uplink signal to the amplifier device and wherein the second circulator is enabled to route the second frequency band downlink signal and the second frequency band uplink signal from the amplifier device for transmission.

14. The system of claim 10, wherein the first circulator is further enabled to route a third frequency band downlink signal and a third frequency band uplink signal to the amplifier device and wherein the second circulator is enabled to route the third frequency band downlink signal and the third frequency band uplink signal from the amplifier device for transmission.

15. A method of band amplification comprising the steps of:

receiving at least a first frequency band downlink signal at a first duplexer;

receiving at least a first frequency band uplink signal at a second duplexer;

transmitting the at least a first frequency band downlink signal from the first duplexer to a first circulator;

transmitting the at least a first frequency band uplink signal from the second duplexer to a first circulator;

transmitting the at least a first frequency band downlink signal and the at least a first frequency band uplink signal from a first circulator to an amplifier;

transmitting the at least a first frequency band downlink signal and the at least a first frequency band uplink signal from an amplifier to a second circulator;

transmitting the at least a first frequency band amplified downlink signal to a second duplexer from a second circulator; and

transmitting the at least a first frequency band amplified uplink signal to a first duplexer from a second circulator.

16. The method of claim 15, further comprising the steps of:

receiving a second frequency band downlink signal at the first duplexer;

receiving a second frequency band uplink signal at the second duplexer;

transmitting the second frequency band downlink signal from the first duplexer to the first circulator;

transmitting the second frequency band uplink signal from the second duplexer to the first circulator;

transmitting the second frequency band downlink signal and the second frequency band uplink signal from the first circulator to the amplifier;

transmitting the second frequency band downlink signal and the second frequency band uplink signal from the amplifier to the second circulator;

transmitting the second frequency band amplified downlink signal to the second duplexer from the second circulator; and

transmitting the second frequency band amplified uplink signal to the first duplexer from the second circulator.

17. The method of claim 16, further comprising the steps of:

receiving a third frequency band downlink signal at the first duplexer;

receiving a third frequency band uplink signal at the second duplexer;

transmitting the third frequency band downlink signal from the first duplexer to the first circulator;

transmitting the third frequency band uplink signal from the second duplexer to the first circulator;

transmitting the third frequency band downlink signal and the third frequency band uplink signal from the first circulator to the amplifier;

transmitting the third frequency band downlink signal and the third frequency band uplink signal from the amplifier to the second circulator;

transmitting the third frequency band amplified downlink signal to the second duplexer from the second circulator; and

transmitting the third frequency band amplified uplink signal to the first duplexer from the second circulator.