Transmission line balun with parasitic mode termination
US6831616B1 · kind B1 · utility
1Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2003 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Jul 25, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transmission line balun eliminates unwanted reflection of signal energy coupling to a ground plane. A junction of the conductive segments connected to the unbalanced port on the balun is connected to the ground plane with a resistor. The selected junction is a virtual ground of the balun, so the presence of the resistor does not degrade the balun performance. The resistor dissipates the energy from the parasitic mode propagating with the ground plane so that no signal is reflected back to short out the signal source. The value of the resistor is selected to facilitate maximum termination of the parasitic mode propagation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.