Tunable notch filtering in multi-transmit applications
US9124355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2012 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Apr 30, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49117
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) communication device comprises a first signal propagating circuit and a second signal propagating circuit, which together enables simultaneous transmission. The first signal propagating circuit is configured with a first tunable notch filter within a first transmit path and the second signal propagating circuit is configured with a second tunable notch filter within a second transmit path. A controller is communicatively coupled to a respective first tuning component and second tuning component of the tunable notch filters. The controller selectively tunes at least one of the tunable notch filters during signal propagation to produce a specific combined notch filtering response that reduces a level of IMD on at least one receive carrier frequency of at least one propagating signal. Aspects of the disclosure also provide a method for making the communication device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.