Method and apparatus for adaptive impedance matching
First Claim
1. A communication device, comprising:
- an RF matching network comprising at least one variable reactive element, wherein the RF matching network has a plurality of RF ports, a first one of the RF ports being coupled to a transceiver and a second one of the RF ports being coupled to an antenna; and
a controller coupled with the RF matching network, wherein the controller determines a signal parameter associated with at least one of the RF ports, wherein the controller generates at least one control signal for controlling the at least one variable reactive element based on the signal parameter and based on a mode of operation of the communication device, andwherein the RF matching network modifies signal power transferred between the first one of the RF ports and the second one of the RF ports according to the at least one control signal applied to the at least one variable reactive element to vary a variable impedance of the RF matching network.
5 Assignments
0 Petitions
Accused Products
Abstract
A system that incorporates teachings of the present disclosure may include, for example, an adaptive impedance matching network having an RF matching network coupled to at least one RF input port and at least one RF output port and comprising one or more controllable variable reactive elements. The RF matching network can be adapted to reduce a level of reflected power transferred from said at least one input port by varying signals applied to said controllable variable reactive elements. The one or more controllable variable reactive elements can be coupled to a circuit adapted to map one or more control signals that are output from a controller to a signal range that is compatible with said one or more controllable variable reactive elements. Additional embodiments are disclosed.
-
Citations
20 Claims
-
1. A communication device, comprising:
-
an RF matching network comprising at least one variable reactive element, wherein the RF matching network has a plurality of RF ports, a first one of the RF ports being coupled to a transceiver and a second one of the RF ports being coupled to an antenna; and a controller coupled with the RF matching network, wherein the controller determines a signal parameter associated with at least one of the RF ports, wherein the controller generates at least one control signal for controlling the at least one variable reactive element based on the signal parameter and based on a mode of operation of the communication device, and wherein the RF matching network modifies signal power transferred between the first one of the RF ports and the second one of the RF ports according to the at least one control signal applied to the at least one variable reactive element to vary a variable impedance of the RF matching network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A communication device, comprising:
-
an RF matching network comprising at least one variable reactive element, wherein the RF matching network has a plurality of RF ports, a first one of the RF ports being coupled to a transceiver and a second one of the RF ports being coupled to an antenna; and a controller coupled with the RF matching network that determines a voltage magnitude associated with at least one of the RF ports, wherein the controller generates at least one control signal for controlling the at least one variable reactive element based on the voltage magnitude and based on a mode of operation of the communication device, and wherein the RF matching network modifies signal power transferred between the first one of the RF ports and the second one of the RF ports according to the at least one control signal applied to the at least one variable reactive element to vary a variable impedance of the RF matching network. - View Dependent Claims (13, 14, 15, 16, 17)
-
-
18. A communication device, comprising:
-
an RF matching network comprising at least one voltage tunable dielectric capacitor, wherein the RF matching network has a plurality of RF ports, a first one of the RF ports being coupled to a transceiver and a second one of the RF ports being coupled to an antenna; and a controller coupled with the RF matching network that determines at least one signal parameter associated with at least one of the RF ports, wherein the controller generates at least one control signal for controlling the at least one voltage tunable dielectric capacitor based on the at least one signal parameter, based on an operating frequency of the communication device, and based on a mode of operation of the communication device, and wherein the RF matching network modifies signal power transferred between the first one of the RF ports and the second one of the RF ports according to the at least one control signal applied to the at least one voltage tunable dielectric capacitor to vary a variable impedance of the RF matching network. - View Dependent Claims (19, 20)
-
Specification