Title:
ローノイズブロック(LNB)ダウンコンバージョン回路およびチップ、LNBダウンコンバージョン回路および方法
Document Type and Number:
Japanese Patent JP2013532455
Kind Code:
A
Abstract:
The present invention disclosed 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 disclosed 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 mirror image signal and the realization of the mirror image suppression function.
Inventors:
Way shanlan
In Jinson
In Jinson
Application Number:
JP2013518937A
Publication Date:
August 15, 2013
Filing Date:
May 10, 2011
Export Citation:
Assignee:
RDA Technologies Limited
International Classes:
H03D7/18; H03D7/00; H04B1/16; H04B1/26
Domestic Patent References:
| JP2005348110A | 2005-12-15 | |||
| JPH1028070A | 1998-01-27 | |||
| JPH0730333A | 1995-01-31 | |||
| JP2010056605A | 2010-03-11 | |||
| JP2000295128A | 2000-10-20 | |||
| JP2005341332A | 2005-12-08 | |||
| JP2003124832A | 2003-04-25 | |||
| JP2002118425A | 2002-04-19 |
Foreign References:
| WO2010023783A1 | 2010-03-04 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office