Title:
DUAL FREQUENCY BAND WIRELESS LAN
Document Type and Number:
WIPO Patent Application WO2003092997
Kind Code:
A3
Abstract:
A dual band radio is constructed using a primary and secondary transceiver. The primary transceiver is a complete radio that is operational in a stand alone configuration. The secondary transceiver is a not a complete radio and is configured to re-use components such as fine gain control and fine frequency stepping of the primary transceiver to produce operational frequencies of the secondary transceiver. The primary transceiver acts like an intermediate frequency device for the secondary transceiver. Switches are utilized to divert signals to/from the primary transceiver from/to the secondary transceiver. The switches are also configured to act as gain control devices. Antennas are selected using either wideband or narrowband antenna switches that are configured as a diode bridge having high impedance at operational frequencies on control lines that bias the diodes.
Inventors:
MCFARLAND WILLIAM J
ONEDERA KEITH
SHOR ARIE
SU DAVID
TERROVITIS MANOLIS
THOMSON JOHN
ZARAGARI MASOUD
ONEDERA KEITH
SHOR ARIE
SU DAVID
TERROVITIS MANOLIS
THOMSON JOHN
ZARAGARI MASOUD
Application Number:
PCT/US2003/013781
Publication Date:
March 18, 2004
Filing Date:
May 02, 2003
Export Citation:
Assignee:
ATHEROS COMM INC (US)
International Classes:
H03H7/01; H03H7/48; H04L12/28; H04B7/06; H04B7/08; (IPC1-7): H04L12/28
Domestic Patent References:
| WO2002031999A1 | 2002-04-18 | |||
| WO2000039943A1 | 2000-07-06 |
Foreign References:
| EP1176709A2 | 2002-01-30 | |||
| EP1041770A2 | 2000-10-04 | |||
| EP0866588A2 | 1998-09-23 | |||
| EP1124337A2 | 2001-08-16 | |||
| US5475875A | 1995-12-12 | |||
| US20020003585A1 | 2002-01-10 |
Other References:
"RF Solutions Introduces Dual-band Transceiver", BUSINESS WIRE IN ASSOCIATION WITH THE GALE GROUP AND LOOKSMART., 18 December 2001 (2001-12-18), XP002266771, Retrieved from the Internet [retrieved on 20040113]
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 01 31 January 1997 (1997-01-31)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 01 31 January 2000 (2000-01-31)
SEMICONDUCTOR BUSINESS NEWS: "RF Solutions, Ellipsis to develop wireless LAN chip sets for multiple standards", WWW.CMPNET.COM, 26 February 2002 (2002-02-26), XP002266772, Retrieved from the Internet [retrieved on 20040113]
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 01 31 January 1997 (1997-01-31)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 01 31 January 2000 (2000-01-31)
SEMICONDUCTOR BUSINESS NEWS: "RF Solutions, Ellipsis to develop wireless LAN chip sets for multiple standards", WWW.CMPNET.COM, 26 February 2002 (2002-02-26), XP002266772, Retrieved from the Internet
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