Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Reexamination Certificate
2011-06-14
2011-06-14
Jackson, Blane J (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
C455S232100
Reexamination Certificate
active
07962116
ABSTRACT:
A receiver includes a Gilbert cell mixer comprising an input transconductance stage. The input transconductance stage includes first and second transistors receiving an input signal and providing a first gain characteristic that is substantially non-linear over an operating frequency range of the receiver. Third and fourth transistors receive the input signal and provide a second gain characteristic that is substantially non-linear over the operating range of the receiver. A combined gain characteristic of the input transconductance stage is based on the first and second gain characteristics and is substantially linear over the operating frequency range of the receiver.
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IEEE Standard P802.11G, Draft Supplement to Standard for Information technology—Telecommunications and Information Exchange Between Systems; Local and Metropolitan Area Networks; Specific Requirements; Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Higher-Speed Physical Layer Extension in the 2.4 GHz Band.
IEEE Std 802.11b-1999 (Supplement to ANSI/IEEE Std 802.11, 1999 Edition—96 pages) Supplement to IEEE Standard for Information Technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Further Higher Data Rate Extension in the 2.4 GHz Band, Apr. 2003, pp. 1-69.
Chien George
Tsai King Chun
Tse Lawrence
Jackson Blane J
Marvell International Ltd.
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