Multiple antenna system for wireless communication

• US 20040014430A1
• Filed: 07/28/2003
• Published: 01/22/2004
• Est. Priority Date: 07/11/2001
• Status: Abandoned Application

• Current Assignee: Envara Ltd. (Intel Corporation)
• Original Assignee: Envara Ltd. (Intel Corporation)
• Inventors: Melamed, Raviv
• Application Number:
  US10/362,795
• Publication Number:
  US 20040014430A1
• Time in Patent Office: Days
• US Class Current: 455/73
• CPC Class Codes: H04B 7/0822 according to predefined selection scheme

Abstract

In a wireless communication system (200) having a transceiver comprising a transmitter and a receiver, a multiple antenna system comprises two receive antennas (224,226) connected with a spatial distribution topology to reduce multi-path, and third transmit antenna (228) connected to the transmitter. The wireless communication system may be a wireless local loop (WLL), or a wireless local area network (WLAN). The wireless communication system may suitably operate at frequencies from 2.4 GHz, including in the 5 GHz band.

Claims

1. In a wireless communication system having a transceiver comprising a transmitter and a receiver, a multiple antenna system comprising:

two receive antennas connected by a switch to the receiver; and

a third, transmit antenna connected directly to the transmitter.

2. An antenna system, according to claim 1, wherein:

the wireless communication system is a wireless local loop (WLL).

3. An antenna system, according to claim. 1, wherein:

the wireless communication system is a wireless local area network (WLAN).

4. An antenna system, according to claim 1, wherein:

the wireless communication system operates at frequencies from 2.4 GHz up to 40 GHz.

5. An antenna system, according to claim 1, wherein:

the wireless communication system operates in the 5 GHz band.

6. A method of reducing the multi-path problem in a wireless communication system, comprising:

using two antennas and spatial distribution for receiving signals; and

using a third, dedicated antenna for transmitting signals.

7. A method of improving noise figure of a receiver of a transceiver of a wireless communication system, comprising:

using two antennas and spatial distribution for receiving signals; and

using a third, dedicated antenna for transmitting signals.

8. A method of increasing power efficiency of a transmitter of a transceiver of a wireless communication system, comprising:

using two antennas and spatial distribution for receiving signals; and

using a third, dedicated antenna for transmitting signals.