MULTI-BAND IMPEDANCE TUNERS USING WEAKLY-COUPLED LC RESONATORS

摘要

Radio frequency (RF) filter structures and related methods and RF front-end circuitry are disclosed. In one embodiment, an RF filter structure includes a first terminal and a first tunable RF filter path defined between the first terminal and a second terminal. The first tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a first frequency. The first frequency may be provided within a first frequency band. Additionally, the RF filter structure includes a second tunable RF filter path defined between the first terminal and the second terminal. The second tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a second frequency. The second frequency may be within a second frequency band. In this manner, the RF filter structure is configured to provide impedance tuning for multiple impedance bands simultaneously.

主权项

1. A radio frequency (RF) filter structure, comprising:
a first terminal; a second terminal; a first tunable RF filter path defined between the first terminal and the second terminal, wherein the first tunable RF filter path is configured to be tunable to provide impedance matching between the first terminal and the second terminal at a first frequency; and a second tunable RF filter path defined between the first terminal and the second terminal, wherein the second tunable RF filter path is configured to be tunable to provide impedance matching between the first terminal and the second terminal at a second frequency.