The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2005
Filed:
Jun. 08, 2001
Neil Weste, Castle Hill, AU;
Andrew Adams, Stanmore, AU;
Philip Ryan, Glebe, AU;
John O'sullivan, Ermington, AU;
David J. Skellern, Roseville, AU;
Richard Keaney, Annandale, AU;
Neil Weste, Castle Hill, AU;
Andrew Adams, Stanmore, AU;
Philip Ryan, Glebe, AU;
John O'Sullivan, Ermington, AU;
David J. Skellern, Roseville, AU;
Richard Keaney, Annandale, AU;
Cisco Systems Wireless Networking (Australia) Pty Limited, North Sydney, AU;
Abstract
A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.