Google Inc.

Motorola Corporation

Motorola Mobility LLC

Google Technology Holdings LLC

Robert S Trocke

Armin Werner Klomsdorf

Dale Gerard Schwent

Gregory Redmond Black

Ranjeet Gupta

Mary Khun Hor-Lao

Michael J Carney

Wayne W Ballantyne

David H Minasi

Ernest Schirmann

Francis W Forest

Mark Alan Kirschenmann

Joseph F Cramer

Christopher P Larosa

A communication device, method and computer program product provide improved performance of one radio frequency (RF) conduction path using an antenna tuner of another RF conduction path while dynamically reducing current drain by the antenna tuner. A determination is made that a first RF conduction path is active in using a first portion of a multiple band antenna system for at least one of: (i) transmitting; and (ii) receiving a signal. An antenna tuner of a second RF conduction path that uses a second portion of the multiple band antenna system is activated. The antenna tuner is configured to tune the second portion of the multiple band antenna system to isolate the second portion from the first portion used by the first RF conduction path. The antenna tuner is deactivated in response to determining that both the first and second RF conduction paths are inactive.

Dynamic reduction of current drain for antenna tuner of a communication device

A method of pre-stressing the variable capacitor device that experiences a temporary time variant hysteresis effect is provided for electronic circuitry, which may include a mobile communication device. The method includes providing a periodic bias voltage to the variable capacitor such that the variable capacitor is maintained at least at a target stress level such that the capacitance of the variable capacitor when subject to a target bias voltage is predictable due to the time variant hysteresis effect being reduced.

Maintaining a capacitor dielectric under strain to reduce capacitance variation due to time variant hysterisis effect

A method and apparatus for tuning an antenna of a communication device includes receiving, at a processing element within the communication device, data relevant to tuning the antenna and identifying an unreliable portion of the data. The method also includes identifying, based on the unreliable portion of the data, a first set of tuning states for tuning the antenna, wherein the first set of tuning states is a subset of a plurality of possible tuning states for tuning the antenna. The method further includes restricting tuning of the antenna to tuning states within the first set of tuning states.

Method and apparatus for tuning an antenna based on unreliable data

A method and system performs antenna tuning which enhances radio frequency (RF) tuner reliability within a wireless communication device (WCD). The WCD, in response to receiving a request to change an active RF tuning state, retrieves component usage data corresponding to components of a tuning circuit that is tunable to an RF operating channel. The WCD selectively determines, using device environment state data and/or RF state data and the component usage data, an RF tuning state tuned to the RF operating channel. The selected RF tuning state (a) satisfies tuning performance specifications and (b) enhances component reliability performance by minimizing an operational wear on tuning circuit components. The WCD configures the tuning circuit using the selected RF tuning state and tracks session parameter values for tuning circuit components during a corresponding communication session. Following completion of the communication session, the WCD uses the tracked session parameter values to update component usage data.

Method and system to improve antenna tuner reliability

Arrangements described herein relate to controlling RF communications by a communication device. Raw sensor data from one or more sensors can be received by a sensor processor. The sensor processor processes the raw sensor data to generate processed sensor data. An application processor processes a portion of the processed sensor data. The application processor is configured to operate in a locked state in which a user is not allowed to alter the at least one secured application and operate in an unlocked state in which the user is allowed to alter the at least one secured application. A portion of the processed sensor data is received from the sensor processor by a communications processor and further processed. The processed sensor data received by the communications processor from the sensor processor is trusted sensor data not affected by the application processor when the application processor operates in the unlocked state.

Trusted sensor data unaffected when an application processor operates in an unlocked state

A communication unit is provided having a transmitter and a processor (). The processor () receives information () representative of a configuration of physical channels (). The processor () determines a scaling factor responsive to the information () and facilitates scaling a signal () provided by a combination of the channels utilizing the scaling factor. The scaled signal () is provided to the transmitter.

Method and system for scaling a multi-channel signal

An apparatus and method for dual mode power control. A transmitter is capable of operating in a first mode of operation and a second mode of operation, the first mode of operation and the second mode of operation including a closed loop control mode and an open loop control mode, the first mode of operation being different from the second mode of operation. The transmitter can be operated in the first mode of operation. A transmitter output power characteristic of the first mode of operation can be read back. The transmitter output power characteristic of the first mode of operation can be correlated to a transmitter output power characteristic of the second mode of operation. The first mode of operation can be switched to the second mode of operation based on the transmitter output power characteristic of the second mode of operation.

Method and apparatus for dual mode power control

A system for reducing the calibration time of a Power Amplifier (PA) () is provided. The system includes a memory module () that is integrated in the PA. The memory module is configured to store one or more calibration parameters of the PA.

System for reducing calibration time of a power amplifier

An apparatus and method for transmission power amplifier bias control in an enhanced data rate for global system mobile evolution mobile communication device. The apparatus can include a transmitter configured to transmit information on an enhanced data rate for global system mobile evolution network at a first transmitter output power. The transmitter can include a modulator configured to receive an input signal and map information in the input signal to symbols represented by eight phase offsets and a power amplifier configured to provide the first transmitter output power for transmitting the symbols represented by eight phase offsets. The apparatus can also include a controller configured to adjust a first bias condition of the power amplifier to a second bias condition based on a changed parameter of operation related to the data stored in a memory.

Apparatus and method for mobile communication device transmission

A transmitter circuit () includes a phase shifter () that receives phase shift compensation and timing data (), and an amplifier () that receives a control signal () to initiate an efficiency enhancement technique. The phase shifter () receives the phase shift compensation and timing data (), and the amplifier () receives the control signal () at a pre-defined relative time such that the compensation phase shift by the phase shifter () compensates for a pre-determined phase change in the amplifier () to produce an RF output signal () with a reduced predicted phase change.

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Caledonia, WI, United States of America

Robert S Trocke