Systems and methods of band amplification with a shared amplifier

• US 8,027,699 B2
• Filed: 03/02/2007
• Issued: 09/27/2011
• Est. Priority Date: 03/02/2007
• Status: Active Grant

• Current Assignee: RFS Technologies Incorporated (Amphenol Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Xu, Xiangqing, Zhen, Liping
• Primary Examiner(s): Ghebretinsae; Temesgh
• Assistant Examiner(s): Fleming-Hall; Erica
• Application Number:
  US11/681,405
• Publication Number:
  US 20080212502A1
• Time in Patent Office: 1,670 Days
• Field of Search: 455/550.1, 455/552.1, 370/276, 370/277, 370/282
• US Class Current: 455/550.1
• 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:

a first amplifier having an input port and an output port;

a first circulator in communication with the input port of the first amplifier, wherein the input port of the first amplifier receives first and second frequency band downlink signals and first and second frequency band uplink signals;

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

a second amplifier having an input port in communication with a third circulator and an output port in communication with a fourth circulator, wherein the input port of the second amplifier receives a third frequency band downlink signal and a third frequency band uplink signal;

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

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

2. The device of claim 1, wherein the first frequency band is in an 800 MHz frequency range and the second frequency band is in a 900 MHz frequency range.

3. The device of claim 1, 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.

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

a first amplifier;

a first circulator in communication with an input port of the first amplifier, wherein the input port of the first amplifier receives first and second frequency band downlink signals and first and second frequency band uplink signals;

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

a second amplifier having an input port in communication with a third circulator and an output port in communication with a fourth circulator, wherein the input port of the second amplifier receives a third frequency band downlink signal and a third frequency band uplink signal;

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

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

5. The system of claim 4, wherein the input port of the first amplifier receives a first frequency band in an 800 MHz frequency range and a second frequency band in a 900 MHz frequency range, and wherein the input port of the second amplifier receives a third frequency band in a 1900 MHz frequency range.

6. A multi-band amplification system comprising:

a first circulator in communication with a first amplifier device, wherein an input port of the first amplifier receives first and second frequency band downlink signals and first and second frequency band uplink signals;

a second circulator in communication with the first amplifier device, wherein the first circulator routes at least a first frequency band downlink signal and at least a first frequency band uplink signal to the first amplifier device, and wherein the second circulator routes the first frequency band downlink signal and the first frequency band uplink signal from the first amplifier device for transmission; and

a second amplifier device having an input port in communication with a third circulator and an output port in communication with a fourth circulator, wherein the input port of the second amplifier receives a third frequency band downlink signal and a third frequency band uplink signal.

7. The system of claim 6, further comprising:

a plurality of duplexers that pass the first frequency band downlink signal and the first frequency band uplink signal to and from the first circulator and the second circulator.

8. The system of claim 7, wherein the plurality of duplexers 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.

9. The system of claim 6, wherein the first circulator further routes a second frequency band downlink signal and a second frequency band uplink signal to the first amplifier device and wherein the second circulator routes the second frequency band downlink signal and the second frequency band uplink signal from the first amplifier device for transmission.

10. The system of claim 6, wherein the third circulator routes a third frequency band downlink signal and a third frequency band uplink signal to the second amplifier device and wherein the fourth circulator routes the third frequency band downlink signal and the third frequency band uplink signal from the second amplifier device for transmission.

11. A method of band amplification comprising:

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.

12. The method of claim 11, further comprising:

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.

13. The method of claim 12, further comprising:

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.