Qorvo Us, Inc.

Cavendish Kinetics Limited

Lars Ernst Johnsson

Paul Anthony Tornatta, Jr

Ray Myron Parkhurst

Chenhui Niu

Roberto Gaddi

Paul Anthony Tornatta

The present disclosure generally relates to any device capable of wireless communication, such as a mobile telephone or wearable device, having one or more antennas. After measuring reflection coefficients of a device at three different DVC states, the reflection coefficient for all other DVC states can be calculated. Thus, based solely upon three reflection coefficient measurements, the antenna can be tuned to adjust for any changes in impedance at the antenna.

Method for tuning an antenna with a DVC

The present disclosure generally relates to any device capable of wireless communication, such as a mobile telephone or wearable device, having one or more antennas. By applying a variable reactance (capacitive or inductive component) antenna aperture tuner within a simple, scalar antenna aperture tuning system, the maintenance of a constant antenna resonant frequency in the presence of environmental changes or head/hand effects is obtained. The variable reactance is used to adjust the resonant frequency of the antenna to stay at the desired target frequency in response to external variables that would otherwise shift the resonance away from the operating frequency of the device. Adjusting the resonant frequency of the antenna in response to externally induced changes maintains the radiating efficiency of the antenna and simultaneously avoids impedance mismatch between the antenna and the respective transmit/receive path in the radio, thereby minimizing transmission losses.

Method and apparatus of maintaining constant antenna resonant frequency and impedance match in the presence of environmental changes and head/hand effect using variable reactance antenna aperture tuners

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Palo Alto, CA, United States of America

Lars Ernst Johnsson