Invention Grant
US08913702B2 LNB frequency down conversion integrated circuit and chip, LNB frequency down conversion circuit and method
有权
LNB降频转换集成电路和芯片，LNB降频转换电路及方法
- Patent Title: LNB frequency down conversion integrated circuit and chip, LNB frequency down conversion circuit and method
- Patent Title (中): LNB降频转换集成电路和芯片，LNB降频转换电路及方法
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Application No.: US13809464Application Date: 2011-05-10
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Publication No.: US08913702B2Publication Date: 2014-12-16
- Inventor: Shunran Wei , Xunsong Yin
- Applicant: Shunran Wei , Xunsong Yin
- Applicant Address: CN Hong Kong
- Assignee: RDA Technologies Limited
- Current Assignee: RDA Technologies Limited
- Current Assignee Address: CN Hong Kong
- Agency: MKG, LLC
- Priority: CN201010226495 20100714; CN201110044008 20110224
- International Application: PCT/CN2011/073870 WO 20110510
- International Announcement: WO2012/006899 WO 20120119
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04N7/20 ; H04L1/00 ; H03D7/16 ; H04H40/90 ; H03D7/18
Abstract:
The present invention discloses a type of LNB frequency down conversion integrated circuit. The present invention frequency-down-converts the RF signal with the Quadrature local oscillation signal (LO) and Quadrature Mixer. Then the 90 degree phase-shifting of the quadrature intermediate frequency (IF) signal after mixed is done by the use of passive Polyphase filter. The present invention further discloses a LNB frequency down conversion chip, a LNB frequency down circuit adopting the LNB frequency down conversion chip circuit and a method of LBN frequency down. The invention ensures the elimination of the minor image signal and the realization of the minor image suppression function.
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