Radio frequency switching system with improved linearity
US9728330B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jun 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/725
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) circuit is described that comprises a plurality of switching arms selectively activatable and associated with corresponding RF input ports. A switch source impedance is associated with each of the RF input ports. The switch source impedance is frequency dependent with its value matched to a characteristic impedance value within a first frequency range. The value of the switch source impedance is not matched to the characteristic impedance value within a second frequency range. When an RF signal within the first frequency range is transmitted through the RF circuit, between one of the RF input ports and an a common port, an RF distortion voltage within a distortion frequency range results at the common port; and the amplitude of a resultant RF distortion voltage is lower than an RF distortion voltage if the switched source impedance is matched to the characteristic impedance within the second frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.