Google Inc.

Motorola Mobility LLC

University of Illinois

Graham R Alvey

James A Van Bosch

Indranil S Sen

Mark R Braun

Gregory Redmond Black

Louis Jay Vannatta

Mohammed Rajeek Abdul-Gaffoor

Paul R Steuer

Md Rashidul Islam

Minh H Duong

Matthew J Slater

Jennifer T Bernhard

Jatin A Kulkarni

The present application provides a multimode transmit power control loop, an electronic device, and a method of adjusting a detected operating level of amplified power output from a power amplifier. The multimode transmit power control loop including a feedback path wherein a feedback path signal is coupled to a feedback detection input of the power amplifier via the feedback path. The feedback path includes a mode selection switch having a control input for selectively applying a different impedance circuit to the feedback path for switching in different attenuation levels, based upon the control input of the mode selection switch identifying one or more of multiple potential operating modes. Operation of the multimode transmit power control loop increases or decreases an operating level of amplified power output from the power amplifier, which is proportional to a present level of attenuation resulting from the particular impedance circuit being applied to the feedback path via the mode selection switch.

Multimode transmit power control loop, electronic device, and method of adjusting a detected operating level of amplified power output

A method, a personal area network device operating as a slave, and a short range communications device operating as a slave are disclosed. A data storagemay store at least one protocol-specific channel criterion for a connection with a master short range communication device. A short range transceivermay execute a preliminary device scan of a scanning set of communication channels for radio frequency energy. A processormay decide to execute a full device scan based in part on the protocol-specific channel criterion.

System and method for mitigating the effects of interferers while performing conditional device scan

A communication device and method mitigates specific absorption rate (SAR) exposure of a user. A radio frequency (RF) transmitter amplifies outgoing communication signals to a total radiated power (TRP) level. A matching network electrically connected to the RF transmitter receives the outgoing communication signals. The matching network divides the TRP level of received, outgoing communication signals to a first power level at a first network output and to a second power level at a second network output. First and second antennas electrically connected respectively to the first and second network output radiate the divided, outgoing communication signals at the first and second power levels. A SAR controller communicatively connected to the matching network controls the matching network to shift transmit power between the first and second antennas while maintaining TRP level to reduce SAR exposure of the user.

Tunable circuit elements for dynamic, per element power

A method and system selects an antenna for signal propagation within a wireless communication device having multiple antennas. A transfer switch controller identifies an operating mode being initiated on the wireless communication device. The transfer switch controller configures a dynamic transfer switch based on the operating mode initiated to support propagation of each available type of communication signal. In addition, the transfer switch controller utilizes a pre-established priority of each available type of communication signal to select the appropriate antenna. The transfer switch controller communicatively connects, utilizing the configured dynamic transfer switch, each of at least one transceiver associated with the operating mode initiated to a specific antenna, where each transceiver supports propagation of a specific type of communication signal. As a result, the transfer switch controller enables each of the at least one communication signal to be propagated via a specific antenna selected using the configured dynamic transfer switch.

Antenna transfer switching for simultaneous voice and data

A portable communication device () has an antenna element (). The antenna element forms a slot () which is used as a slot antenna. The device is configured such that the slot facilitates operation of a user interface element through the slot.

Radio device and slot antenna which facilitates operation of a user interface element

A wireless communication device includes multiple antennas spaced apart from each other. Also included is a dielectric substrate with electrically conductive ground areas along the substrate opposite the antennas. Signal coupling is decreased between the antennas by connecting the ground areas together with an isolation structure. In one nonlimiting form, this structure includes an electrically conductive meander line structure.

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Skokie, IL, United States of America

Graham R Alvey