Patent ID: 8639194
Filing Date: 2014-01-28
Classification: H01Q

Abstract:
1. A communications device comprising: at least one antenna; a physical component co-located in proximity to a first antenna of the at least one antenna, and which comprises one or more signal lines connected to printed circuit board (PCB) contacts that are extended from a PCB, wherein the physical component comprises (a) at least one of conductive element and a movable element from which capacitive loading effects on first antenna can originate, wherein the at least one conductive element and movable element is respectively associated with one signal line and (b) a connection between at least one of the signal line and a corresponding ground signal line of the physical component and a switch; a tunable impedance switchably connected via the switch to the ground signal line, wherein the tunable impedance provides tuning of the first antenna to minimize capacitive loading experienced by said first antenna while a function of the physical component is activated, which function correlates to the device being in a particular operating state; and a controller coupled to the tunable impedance and which, in response to activation of the function of the physical component, configures the tunable impedance to a pre-set impedance level to compensate for said capacitive loading and triggers the switch to connect the tunable impedance to the ground signal line to provide antenna tuning corresponding to the preset impedance level.