Dual cancellation loop wireless repeater

• US 20080261519A1
• Filed: 04/21/2008
• Published: 10/23/2008
• Est. Priority Date: 03/16/2006
• Status: Abandoned Application

• Current Assignee: CelLynx, Inc. (CelLynx Group, Inc.)
• Original Assignee: CelLynx, Inc. (CelLynx Group, Inc.)
• Inventors: DeMarco, Anthony, Ash, Daniel Ray, Risheq, Tareq Adel
• Application Number:
  US12/106,468
• Publication Number:
  US 20080261519A1
• Time in Patent Office: Days
• US Class Current: 455/7
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver
• CPC Class Codes: H04B 17/354 Adjacent channel leakage power
• CPC Class Codes: H04B 7/15585 by interference cancellation
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels

Abstract

A wireless repeater comprises dual cancellation loops. The wireless repeater includes an active cancellation loop and a passive cancellation loops. The active cancellation loops reduces an environmentally induced signal component from a receive signal entering the repeater'"'"'s amplifier. The passive cancellation loop reduces leaked signal component from the received signal.

Claims

1. A wireless repeater having a receiving antenna and a transmitting antenna, the repeater comprising:

an amplifier coupling the receiving antenna and the transmitting antenna and that receives a received signal from the receiving antenna;

an active cancellation loop to reduce an environmentally induced signal component from the received signal entering the amplifier; and

a passive cancellation loop to reduce a leak signal component from the received signal entering the amplifier.

2. The repeater of claim 1, wherein the amplifier comprises a bi-directional amplifier.

3. The repeater of claim 1, wherein the active cancellation loop and the passive cancellation loop are the same loop.

4. The repeater of claim 1, wherein the receiving antenna and the transmitting antenna are separated by less than approximately 30 centimeters.

6. The repeater of claim 1, wherein the receive antenna and the transmitting antenna are positioned relative to each other irrespective of a gain of the repeater.

7. The repeater of claim 1, wherein the active cancellation loop is configured to stabilize a gain across the amplifier in real-time.

8. The repeater of claim 7, wherein the active cancellation loop is further configured to reduce oscillations across the amplifier.

9. The repeater of claim 1, wherein the active cancellation loop is configured to reduce a loop back gain.

10. The repeater of claim 1, wherein the repeater is configured to provide at least 60 dB of stable gain.

11. The repeater of claim 1, wherein the repeater is configured to provide at least 45 dB of signal isolation between the receiving and the transmitting antennas.

12. The repeater of claim 1, further comprising an interface to adjust the passive cancellation loop'"'"'s parameters.

13. The repeater of claim 1, wherein the amplifier is configured to be operable across multiple bands.

14. The repeater of claim 13, wherein the receive antenna and the transmitting antenna comprise phased antennas.

15. The repeater of claim 1, wherein the amplifier is adapted to amplify a cell phone signal.

16. The repeater of claim 1, wherein the repeater is configured to be portable when active.

17. The repeater of claim 16, wherein the repeater is disposed within a mobile platform.

18. The repeater of claim 1, further comprising a Bluetooth interface.

19. The repeater of claim 1, wherein the receiving and the transmitting antennas are configured to be responsive to signals generated from at least one of the follow:

an RFID tag, a cell phone, a WiMax router, and a Bluetooth device.

5. The repeater of claim 5, wherein the receive antenna and the transmitting antenna are spaced apart by less than approximately three centimeters.