Invention Grant
- Patent Title: Reconstruction filter with built-in balun
- Patent Title (中): 重建过滤器内置平衡 - 不平衡转换器
-
Application No.: US13157379Application Date: 2011-06-10
-
Publication No.: US08843098B2Publication Date: 2014-09-23
- Inventor: Michael G. Zierdt
- Applicant: Michael G. Zierdt
- Applicant Address: FR Boulogne-Billancourt
- Assignee: Alcatel Lucent
- Current Assignee: Alcatel Lucent
- Current Assignee Address: FR Boulogne-Billancourt
- Agency: Davidson Sheehan, LLP
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H03H7/01 ; H03F3/217 ; H03H7/42 ; H03H1/00

Abstract:
The present invention provides a filter that may be used as a reconstruction filter with a built-in balun. One embodiment of the filter includes first and second input nodes for receiving balanced radiofrequency signals and an inductive-capacitive (LC) circuit coupled between the first and second input nodes and first and second intermediate nodes. This embodiment of the filter also includes a coupling circuit that couples the first and second intermediate nodes to an output node. Balanced signals within a filter bandwidth are transmitted from the first and second input nodes to the output node and balanced signals outside the filter bandwidth are substantially shorted to ground.
Public/Granted literature
- US20120314734A1 RECONSTRUCTION FILTER WITH BUILT-IN BALUN Public/Granted day:2012-12-13
Information query