Invention Grant
US07933361B2 Hybrid DC-offset reduction method and system for direct conversion receiver
有权
用于直接转换接收机的混合直流偏移降低方法和系统
- Patent Title: Hybrid DC-offset reduction method and system for direct conversion receiver
- Patent Title (中): 用于直接转换接收机的混合直流偏移降低方法和系统
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Application No.: US11399127Application Date: 2006-04-05
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Publication No.: US07933361B2Publication Date: 2011-04-26
- Inventor: Kuang-Hu Huang , Wei-Chung Peng , Chia-So Chuan
- Applicant: Kuang-Hu Huang , Wei-Chung Peng , Chia-So Chuan
- Applicant Address: TW Hsinchu
- Assignee: Integrated System Solution Corp.
- Current Assignee: Integrated System Solution Corp.
- Current Assignee Address: TW Hsinchu
- Agency: J.C. Patents
- Main IPC: H03K9/00
- IPC: H03K9/00 ; H04L27/00

Abstract:
A hybrid structure circuit for the cancellation of both Type-I and Type-II DC offsets. It comprises a static compensator in conjunction with a servo-loop feedback amplifier to suppress the undesired DC components present along the path of the base band after the direct conversion mixer. Two mixers are used to down convert a received RF signal directly to a base band signal with two components: in-phase and quadrature-phase. Both in-phase and quadrature-phase branches employ the same circuitry for DC offset cancellation. Miller effect is also utilized in the structure in order to implement the circuit on-chip.
Public/Granted literature
- US20070237264A1 Hybrid DC-offset reduction method and system for direct conversion receiver Public/Granted day:2007-10-11
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