Adaptive antenna matching
AssigneeSony Ericsson Mobile Communications AB
InventorsFilip Skarp, Joakim Eriksson
Life of this patent
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Abstract
The present invention relates to a portable communication device and a method of controlling the matching of an antenna in a portable communication device. The device may include an antenna; a radio circuit to send a radio frequency signal to the antenna via a signal path; a matching network including a number of network components and configured to be in the signal path; a detector configured to detect an electromagnetic field from the antenna; and a control unit configured to control matching of the antenna by influencing at least one of the first matching network or the antenna based on the detected electromagnetic field.
Claims17
A portable communication device comprising:
- an antenna;
- a radio circuit to send a radio frequency signal to the antenna via a signal path;
- a first matching network including a number of network components and configured to be in the signal path;
- a detector configured to detect an electromagnetic field from the antenna;
- and
- a control unit configured to control matching of the antenna by influencing at least one of the first matching network or the antenna based on the detected electromagnetic field, where when controlling the matching, the control unit is to:
- compare data indicative of the detected electromagnetic field to a set of pre-stored reference data indicative of fields relating to a number of known parameters associated with different conditions of antenna use,
- select a matching strategy associated with a portion of the pre-stored reference data based on the data indicative of the detected electromagnetic field, and
- control the matching of the antenna based on the selected strategy.
In a portable communication device, a method comprising:
- detecting a electromagnetic field associated with an antenna configured to receive a radio frequency signal from a radio circuit, wherein a first matching network that includes a number of network components is configured to be operably disposed in a signal path between the antenna and the radio circuit;
- and
- controlling a matching of the antenna by influencing at least one of the first matching network or the antenna based on the detected electromagnetic field, where the controlling the matching comprises:
- comparing data indicative of the detected electromagnetic field to a set of pre-stored reference data indicative of fields relating to a number of known parameters associated with different conditions of antenna use,
- selecting a matching strategy associated with a portion of the pre-stored reference data based on the data indicative of the detected electromagnetic field, and
- controlling the matching of the antenna based on the selected strategy.
Dependencies are inferred from the claim text.