WiFi antenna system and method of operation

• US 20080181146A1
• Filed: 01/31/2007
• Published: 07/31/2008
• Est. Priority Date: 01/31/2007
• Status: Abandoned Application

• Current Assignee: AireSurf Networks Holdings, Inc. (NexGen Energy Ltd.)
• Original Assignee: AireSurf Networks Holdings, Inc. (NexGen Energy Ltd.)
• Inventors: Doan, Minh
• Application Number:
  US11/700,793
• Publication Number:
  US 20080181146A1
• Time in Patent Office: Days
• US Class Current: 370/310
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H04B 1/44 Transmit/receive switching

Abstract

A WiFi antenna system includes a WiFi amplifier having a reception antenna and a separate transmission antenna for respectively receiving from and transmitting to WiFi devices such as laptop computers and the like. A logic circuit controls transmission and reception of signals via the antennas. Preferably, a splitter-combiner splits signals from a local area network (LAN) and a signal level comparator determines whether the LAN signals are transmission signals which should be transmitted via the transmission antenna. If so, the logic circuit controls the power levels of the two antennas to that effect. Preferably, the transmission antenna is normally at a standby power level while the reception antenna is at a high gain operational power level. If a signal is to be transmitted via the transmission antenna, the logic circuit increases the transmission power level to a maximum allowable and decreases the reception power level to a standby level.

Claims

1. An apparatus comprising:

a WiFi amplifier;

a transmission (TX) antenna connector on the amplifier adapted to connect to a TX antenna for transmitting radio frequency (RF) signals to a WiFi device; and

a separate reception (RX) antenna connector on the amplifier adapted to connect to a separate RX antenna for receiving RF signals from a WiFi device.

2. The apparatus of claim 1 further comprising a logic circuit in electrical communication with the TX and RX antenna connectors and programmed for controlling respective power levels thereof.

3. The apparatus of claim 2 wherein the logic circuit is programmed for increasing the power level to the TX antenna connector while reducing the power level to the RX antenna connector.

4. The apparatus of claim 3 wherein the logic circuit is programmed for reducing the power level to the TX antenna connector while increasing power to the RX antenna connector.

5. The apparatus of claim 2 wherein the logic circuit is programmed to set power to the TX antenna connector at a standby power level.

6. The apparatus of claim 5 wherein the logic circuit is programmed set the TX antenna connector at a standby power level while the RX antenna connector is at an operational power level.

7. The apparatus of claim 6 wherein the logic circuit is programmed set the RX antenna connector at a standby power level while the TX antenna connector is at an operational power level.

8. The apparatus of claim 5 wherein the logic circuit is programmed to maintain power to the TX antenna connector at a standby power level unless a TX signal is received from a local area network (LAN).

9. The apparatus of claim 1 further comprising a logic circuit in electrical communication with the TX and RX antenna connectors and programmed for controlling TX and RX signals to and from the antenna connectors.

10. The apparatus of claim 9 further comprising a local area network (LAN) signal access port in electrical communication with the TX and RX connectors and adapted for sending output signals to and receiving input signals from a LAN.

11. The apparatus of claim 10 wherein the logic circuit is programmed for transmitting via the TX antenna connector only when input signals received via the LAN signal access port are TX signals.

12. The apparatus of claim 9 wherein the logic circuit is programmed for switching between receiving RX signals via the RX antenna connector and transmitting TX signals via the TX antenna connector.

13. The apparatus of claim 1 further comprising a local area network (LAN) signal access port in electrical communication with the TX and RX connectors and adapted for sending output signals to and receiving input signals from a LAN.

14. The apparatus of claim 13 further comprising a signal splitter-combiner in electrical communication with the access port and the TX and RX connectors.

15. The apparatus of claim 13 further comprising a switch for switching between a TX electric pathway between the access port and the TX antenna connector and an RX electric pathway between the access port and the RX antenna connector.

16. The apparatus of claim 13 further comprising a signal level comparator in electrical communication with the access port for comparing a power level of a signal from the access port with a predetermined TX signal threshold power level;

and wherein the logic circuit is programmed to send the signal to the TX antenna connector if the signal exceeds the threshold power level.

17. The apparatus of claim 16 wherein the logic circuit is programmed to increase the power level to the TX antenna connector and reduce the power level to the RX antenna connector if the signal exceeds the threshold power level.

18. The apparatus of claim 17 wherein the logic circuit is programmed to increase the power level to the TX antenna connector from a standby power level to an operational power level and reduce the power level to the RX antenna connector from an operational power level to a standby power level if the signal exceeds the threshold power level.

19. The apparatus of claim 1 further comprising a TX antenna connected to the TX antenna connector;

and a separate RX antenna connected to the RX antenna connector.

20. A method comprising the steps of:

transmitting RF signals at a first gain with a TX antenna of a WiFi amplifier; and

receiving RF signals at a second gain different than the first gain with a separate RX antenna of the WiFi amplifier.