RF choke with windings located at two different core diameters
US6094110A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1998 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Nov 18, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This invention relates to a radio frequency ("RF) choke having improved insertion loss and reduced hum modulation. The RF choke includes three conductors wound in series around an elongated core. The first conductor forms a first group of windings where each turn abuts the next turn. The second conductor forms a second group windings where each turn is spaced from the next. The third conductor forms a third group of windings where each turn abuts the next turn. The second and third groups of windings are wound in an opposite direction around the core than the first group of windings. The elongated core can include two separate diameters. A plurality of resistors are electrically connected to said conductors to provide an impedence that effectively blocks an RF signal at between 5 MHz and 1000 MHz. This type of choke can be employed in numerous circuits, including line splitters and couplers, trunk amplifiers, bridge amplifiers and line extender amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.