Systems and methods for processing time-division signals and frequency-division signals

• US 9,184,903 B2
• Filed: 12/09/2013
• Issued: 11/10/2015
• Est. Priority Date: 05/16/2011
• Status: Expired due to Fees

• Current Assignee: NXP USA, Inc. (NXP Semiconductors NV)
• Original Assignee: Marvell World Trade Limited (Marvell Technology Group Limited)
• Inventors: Fan, Mingjie
• Primary Examiner(s): KHAJURIA, SHRIPAL K
• Application Number:
  US14/100,864
• Publication Number:
  US 20140092791A1
• Time in Patent Office: 701 Days
• Field of Search: 370/280
• US Class Current: 1/1
• CPC Class Codes: H04B 1/0057 using diplexing or multiplexing filters for selecting the desired band
• CPC Class Codes: H04B 1/006 using switches for selecting the desired band H04B1/0057 takes precedence
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex

Abstract

System and methods are provided for processing time-division signals and frequency-division signals using a multi-mode transceiver. The example system includes a power amplifier, a switching component, and a duplexer. The power amplifier is configured to receive a first time-division signal from the transceiver and to generate an amplified time-division signal based on the first time-division signal if the transceiver is in a time-division mode. The power amplifier is further configured to receive a first frequency-division signal from the transceiver and to generate an amplified frequency-division signal based on the first frequency-division signal if the transceiver is in a frequency-division mode. The switching component is configured to receive the amplified time-division signal from the power amplifier, and to output the amplified time-division signal for transmission. The duplexer configured to receive the amplified frequency-division signal from the switching component, and to output a transmission signal for transmission.

Claims

1. A system for transmitting signals in a mobile network, the system comprising:

a transceiver configured to

(a) transmit (i) time-division (TD) output signals in a TD transmission/reception band, and (ii) frequency-division (FD) output signals in a FD transmission band, and

(b) receive (i) TD input signals in the TD transmission/reception band, and (ii) FD input signals in a FD reception band;

a single power amplifier configured to amplify both the TD output signals and the FD output signals received from the transceiver, wherein the power amplifier is operable with a bandwidth that covers both the TD transmission/reception band and the FD transmission band; and

an output terminal having a duplexer, wherein the output terminal is configured to respectively generate transmission signals based on (i) the TD output signals amplified by the power amplifier, and (ii) the FD output signals as amplified by the power amplifier, and wherein the duplexer is configured to receive the amplified FD output signals and output corresponding FD transmission signals to an antenna, and wherein the duplexer is further configured to not receive the amplified TD output signals;

a switch configured to route the amplified FD output signals to the duplexer and to route the amplified TD output signals to bypass the duplexer,

wherein the FD transmission band and the FD reception band are different from each other and from the TD transmission/reception band, and

wherein the TD transmission/reception band is adjacent to the FD transmission band.

2. The system of claim 1, wherein the switch is configured to route the amplified TD output signals to the antenna when bypassing the duplexer.

3. The system of claim 1, wherein the switch is configured to:

route FD received signals from the antenna to the duplexer, from which the duplexer generates the FD input signals that are input by the transceiver, and

route TD received signals from the antenna to bypass the duplexer.

4. The system of claim 3, wherein the switch is configured to route the TD received signals through a filter when bypassing the duplexer, from which the filter generates the TD input signals that are input by the transceiver.

5. The system of claim 1, wherein:

the TD transmission/reception band is in the range 1880-1920 MHz, and

the FD transmission band is in the range 1920-1980 MHz.

6. The system of claim 1, wherein the TD transmission/reception band is located between the FD transmission band and the FD reception band.

7. The system of claim 6 wherein:

the FD transmission band is in the range 1920-1980 MHz,

the TD transmission/reception band is in the range 2010-1980 MHz, and

the FD reception band is in the range 2110-2170 MHz.

8. The system of claim 1, wherein the TD transmission/reception band is a first TD transmission/reception band, and wherein the transceiver is configured to output the TD output signals on both the first TD transmission/reception band and a second TD transmission/reception band and receive the TD input signals on both the first TD transmission/reception band and the second TD transmission/reception band.

9. The system of claim 8 wherein the FD transmission band and is located between the first TD transmission/reception band and the second TD transmission/reception band.

10. The system of claim 9 wherein the second TD transmission/reception band is located between the FD transmission band and the FD reception band.

11. The system of claim 10 wherein:

the first TD transmission/reception band is in the range 1880-1920 MHz,

the FD transmission band is in the range 1920-1980 MHz,

the second TD transmission/reception band is in the range 2010-1980 MHz, and

the FD reception band is in the range 2110-2170 MHz.

12. A system for receiving signals in a mobile network, the system comprising:

an input terminal configured to

(a) receive, from an antenna, (i) time-division (TD) received signals associated with a TD transmission/reception band, and (ii) frequency-division (FD) received signals associated with a FD reception band, and

(b) output (i) TD input signals corresponding to the TD received signals and (ii) FD input signals corresponding to the FD received signals; and

a transceiver including

a first input configured to input the TD input signals, and

a second input configured to input the FD input signals;

wherein the FD transmission band and the FD reception band are different from each other and from the TD transmission/reception band; and

wherein the TD transmission/reception band is in the range 2010-2025 MHz, and the FD reception band is in the range 2110-2170 MHz.

13. The system of claim 12, wherein the input terminal includes a duplexer and a switch, and wherein the switch is configured to:

route the FD received signals from the antenna to the duplexer, from which the duplexer generates the first input signals that are input by the transceiver, and

route the received TD signals from the antenna to the transceiver and bypass the duplexer.

14. The system of claim 13 wherein the switch is configured to route the TD received signals though a filter when bypassing the duplexer, from which the filter generates the second input signals that are input by the transceiver.

15. A system for transmitting signals in a mobile network, the system comprising:

a transceiver configured to

(a) transmit (i) time-division (TD) output signals in a TD transmission/reception band, and (ii) frequency-division (FD) output signals in a FD transmission band, and

(b) receive (i) TD input signals in the TD transmission/reception band, and (ii) FD input signals in a FD reception band;

a single power amplifier configured to amplify both the TD output signals and the FD output signals received from the transceiver, wherein the power amplifier is operable with a bandwidth that covers both the TD transmission/reception band and the FD transmission band; and

an output terminal configured to respectively generate transmission signals based on (i) the TD output signals amplified by the power amplifier, and (ii) the FD output signals amplified by the power amplifier;

wherein the FD transmission band and the FD reception band are different from each other and from the TD transmission/reception band, and

wherein the TD transmission/reception band is in the range 1880-1920 MHz, and the FD transmission band is in the range 1920-1980 MHz.

16. The system of claim 15, wherein the output terminal includes a duplexer configured to receive the amplified FD output signals and output corresponding FD transmission signals to an antenna, and further configured to not receive the amplified TD output signals.

17. The system of claim 15, further comprising a switch configured to:

route FD received signals from the antenna to the duplexer, from which the duplexer generates the FD input signals that are input by the transceiver, and

route TD received signals from the antenna to bypass the duplexer.

18. The system of claim 17, wherein the switch is configured to route the TD received signals through a filter when bypassing the duplexer, from which the filter generates the TD input signals that are input by the transceiver.

19. The system of claim 15, further comprising a duplexer configured to:

receive the amplified FD output signals and output corresponding FD transmission signals to an antenna, and

receive the amplified TD output signals and output corresponding TD transmission signals to the antenna.