发明授权
US5834989A Circuitry for use with coaxial cable distribution networks with a ground
plane near the ports
失效
用于与端口附近的地平面的同轴电缆分配网络一起使用的电路
- 专利标题: Circuitry for use with coaxial cable distribution networks with a ground plane near the ports
- 专利标题(中): 用于与端口附近的地平面的同轴电缆分配网络一起使用的电路
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申请号: US794342申请日: 1997-02-03
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公开(公告)号: US5834989A公开(公告)日: 1998-11-10
- 发明人: Robert L. Romerein , David B. Crowhurst , Zdenek J. Nepovim , Kenneth W. Lynes
- 申请人: Robert L. Romerein , David B. Crowhurst , Zdenek J. Nepovim , Kenneth W. Lynes
- 申请人地址: CAX Lindsay
- 专利权人: J.E. Thomas Specialties Limited
- 当前专利权人: J.E. Thomas Specialties Limited
- 当前专利权人地址: CAX Lindsay
- 主分类号: H01R9/05
- IPC分类号: H01R9/05 ; H01R13/703 ; H01R24/44 ; H01R24/46 ; H04N7/10 ; H05K9/00 ; H01P5/18
摘要:
A conducting housing (to be closed by a lid) for a coaxial cable distribution network has a common port and one of an aerial or pedestal port. A motherboard carries an RF circuit and a transfer switch. In one setting of the transfer switch the RF circuit connects a coaxial pin at the common port with a coaxial pin at the pedestal port. In the other setting the common port pin is connected to the aerial port pin. When the aerial port is used on a rectangular housing, a transmission line forms part of the RF circuit between the motherboard and the aerial port. The transmission is preferably a central conductor spaced over most of its length by air from an outer conductor in the form of an inverted U enclosing the central conductor on three sides. Preferably a ground plane on the back of the motherboard connects to the transmission line outer conductor to provide a path entry in the housing at both ends for ground currents generated by signals in the RF path.
公开/授权文献
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