WLAN TRANSCEIVING SYSTEM

• US 20100080204A1
• Filed: 09/29/2009
• Published: 04/01/2010
• Est. Priority Date: 09/29/2008
• Status: Abandoned Application

• Current Assignee: Realtek Semiconductor Corp.
• Original Assignee: Realtek Semiconductor Corp.
• Inventors: Chan, Ka-Un, Liu, Der-Zheng, Yen, Kuang-Yu
• Application Number:
  US12/568,684
• Publication Number:
  US 20100080204A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04B 7/04 using two or more spaced independent antennas

Abstract

A WLAN transceiving system, which comprises: a plurality of antennas; a plurality of receiving circuits, wherein each one of receiving circuits is coupled to one of the antenna to receive a input signal from the antennas; and a plurality of transmitting circuits, for outputting one of an output signal and an amplified output signal, wherein at least one of the transmitting circuit includes a power amplifier and utilizes at least one of the power amplifier to amplify an output signal to generate the amplified output signal, where a number of the power amplifiers is less than a number of the antennas.

Claims

1. A WLAN transceiving system, comprising:

a plurality of antennas;

a plurality of receiving circuits, wherein each one of receiving circuits is coupled to one of the antenna to receive a input signal; and

a plurality of transmitting circuits, for outputting one of an output signal and an amplified output signal;

wherein at least one of the transmitting circuit includes a power amplifier and utilizes at least one of the power amplifier to amplify an output signal to generate the amplified output signal, where a number of the power amplifiers is less than a number of the antennas.

2. The WLAN transceiving system of claim 1, wherein numbers of the antennas, the receiving circuits, and the transmitting circuits are the same.

3. The WLAN transceiving system of claim 1, wherein the transmitting circuit utilizes part of the power amplifiers as operating power amplifiers to amplify an output signal to generate the amplified output signal.

4. The WLAN transceiving system of claim 3, wherein the power amplifiers are initially disabled and least one of the power amplifier is enabled to be the operating power amplifier when the transmitting circuit outputs the amplified output signal.

5. The WLAN transceiving system of claim 3, wherein the transmitting circuits passes by the power amplifiers that are not operating power amplifiers when the transmitting circuit outputs the output signal.

6. The WLAN transceiving system of claim 1, wherein the transmitting circuit including the power amplifier follows a first signal communication specification, where the transmitting circuit including no power amplifier follows a second signal communication specification.

7. A WLAN transceiving system, comprising:

a plurality of antennas;

a plurality of receiving circuits, wherein each one of receiving circuits is coupled to one of the antenna to receive an input signal; and

a plurality of transmitting circuits, for outputting an amplified output signal, wherein each of the transmitting circuits includes a power amplifier and utilizes part of the power amplifiers as operating power amplifiers to amplify an output signal to generate the amplified output signal.

8. The WLAN transceiving system of claim 7, wherein numbers of the antennas, the receiving circuits, the transmitting circuits and the power amplifiers are the same.

9. The WLAN transceiving system of claim 7, wherein the power amplifiers are initially disabled and at least one of the power amplifiers is enabled to be the operating power amplifier when the transmitting circuit outputs the amplified output signal.

10. The WLAN transceiving system of claim 7, wherein the transmitting circuits passes by the power amplifiers that are not operating power amplifiers when the transmitting circuit outputs the output signal.

11. The WLAN transceiving system of claim 7, wherein the transmitting circuit utilizing the operating power amplifier follows a first signal communication specification, where the transmitting circuit does not utilize the power amplifier follows a second signal communication specification.

12. A WLAN transceiving system, comprising:

a first antenna, for receiving a first input signal or transmitting a first output signal;

a second antenna, for receiving a second input signal or transmitting a second output signal;

a first transmitting circuit, for generating the first output signal to the first antenna; and

a second transmitting circuit, for generating the second output signal to the second antenna;

wherein the first transmitting circuit and the second transmitting circuit are unsymmetrical.

13. The WLAN transceiving system of claim 12, wherein the first transmitting circuit includes a power amplifier;

and the second transmitting circuit includes no power amplifier.

14. The WLAN transceiving system of claim 12, wherein the power consumption of the first transmitting circuit are different from the power consumption of the second transmitting circuit when data is transmitting.

15. The WLAN transceiving system of claim 12, comprising:

a first receiving circuit, for receiving the first input signal from the first antenna; and

a second receiving circuit, for receiving the second input signal from the second antenna;

wherein the first receiving circuit and the second receiving circuit are unsymmetrical.

16. The WLAN transceiving system of claim 15, wherein the first receiving circuit includes a low noise amplifier;

and the second receiving circuit includes no low noise amplifier.