DSP Group Patent Grants

Method and system for motion detection using digital enhanced cordless telecommunicaiton (DECT) signals

Granted: January 10, 2017
Patent Number: 9544788
A digital enhanced cordless telecommunication (DECT) base station, the DECT base station may include a transmitter that is arranged to transmit, at different points of time, downlink transmitted DECT signals to another DECT device that differs from the DECT base station; a receiver that is arranged to receive from the other DECT device downlink reception information indicative of attributes of downlink received DECT signals that were received by the other DECT device as a result of the…

Integrated circuit package

Granted: December 6, 2016
Patent Number: 9514957
A method that may include of at least partially surrounding with an insulating encapsulation lead frames, an integrated circuit attachment and wire bonding while preventing the insulating encapsulation from contacting at least one area of a base element; and at least partially surrounding an exterior of the insulating encapsulation with a conductive coating that contacts at least one area of the base element.

RF transformer based TX/RX integrated RF switch

Granted: November 1, 2016
Patent Number: 9484977
The present invention is a novel and useful RF transformer based transmit/receive (TX/RX) integrated RF switch. In one embodiment of the invention, the TX/RX RF switch circuit is based on the use of an RF transformer which functions as (1) the PA output transformer during TX mode and (2) as a series inductance in an LNA matching network during receive mode. Thus, the RF transformer plays a dual function or role. Antenna diversity is achieved by having multiple antennas each having an…

Amplifier linearization using predistortion

Granted: October 18, 2016
Patent Number: 9473077
A device and method of predistortion linearization that account for both EVM and spectral mask are disclosed. The device and method are based on transforming the predistorter optimization problem from the time domain to the frequency domain, and weighting the equations according to one or more desired objectives. One objective focuses on abiding by the spectral mask, whereas another objective focuses on improving the EVM.

Method and an apparatus for coherency control

Granted: September 20, 2016
Patent Number: 9448954
The subject matter discloses a method for data coherency; the method comprising receiving an interrupt request for interrupting a CPU; wherein the interrupt request is from one of a plurality of modules; wherein the interrupt request notifying a writing instruction of a first data by the one of the plurality of modules to a shared memory; and wherein the shared memory is accessible to the plurality of modules through a shared bus; suspending the interrupt request; validating a completion…

DC-DC converter incorporating trim cell

Granted: August 23, 2016
Patent Number: 9425749
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

Apparatus and method for correcting IQ imbalance

Granted: August 9, 2016
Patent Number: 9413294
The subject matter discloses an apparatus residing within an RF chip, comprising: a detection unit for detecting IQ mismatch in an IQ signal; an analog calibration module comprising a first analog calibration mechanism for calibrating IQ mismatch in the phase component and a second analog calibration mechanism for calibrating IQ mismatch in the amplitude component; and a control unit for determining a calibration sequence of the IQ signal.

Efficient linear integrated power amplifier incorporating low and high power operating modes

Granted: August 9, 2016
Patent Number: 9413303
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

Communication system and a method for mitigating leakage signals

Granted: May 17, 2016
Patent Number: 9344142
A communication system that includes a transmit antenna, a radio frequency (RF) phase shifting module, an RF combiner, a first receive antenna and a second receive antenna; wherein the first and second receive antennas are located at a same distance from the transmit antenna; wherein the first and second receive antennas are arranged to receive first and second leakage signals resulting from a transmission of RF radiation by the transmit antenna; wherein the RF phase shifting module is…

System, method and computer readable medium for DECT ULE paging and broadcast

Granted: May 10, 2016
Patent Number: 9338780
An ultra low energy (ULE) digital enhanced cordless telecommunication (DECT) base station that includes a scheduler that is arranged to dynamically determine a schedule of transmissions of broadcast messages and of paging messages to be received by DECT ULE devices; a dummy bearer generator arranged to generate dummy bearers in response to the schedule; wherein each dummy bearer comprises a multiple usage field and a usage indicative field; wherein the usage indicative field is…

Non-synchronized ADPCM with discontinuous transmission

Granted: May 3, 2016
Patent Number: 9332585
A method for coordinating an encoder and a decoder in a wireless communication system employing discontinuous transmission, the method comprising performing a syncless reset command on the encoder and the decoder, in order to bring the encoder and decoder into stable and compatible states. The syncless reset command can be implemented by setting the variables of the encoder and decoder into predetermined values, or by performing a normal reset command followed by encoding or decoding a…

CMOS based TX/RX switch

Granted: April 12, 2016
Patent Number: 9312820
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

CMOS based RF antenna switch

Granted: March 22, 2016
Patent Number: 9294050
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

Enhanced stereophonic audio recordings in handheld devices

Granted: February 23, 2016
Patent Number: 9271076
Methods and systems are provided for enhanced stereo audio recordings in electronic devices. Stereophonic recording performance in an electronic device, using a first microphone and a second microphone in the electronic device, may be assessed; and processing of signals generated by the first microphone and the second microphone may be configured based on the assessed stereophonic recording performance. The configuring may comprises adaptively modifying the processing to enhance…

Linear row array integrated power combiner for RF power amplifiers

Granted: December 8, 2015
Patent Number: 9208943
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, BLUETOOTH®, ZIGBEE®, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

Efficient drift avoidance mechanism for synchronous and asynchronous digital sample rate converters

Granted: December 8, 2015
Patent Number: 9209783
A device, comprising a first interpolator that is configured to (a) receive, at a first clock rate, a first signal having a first sampling rate and (b) output, at a second clock rate, a second signal having a first desired sampling rate average; wherein the first interpolator comprises: a first buffer for storing the first signal; and a first fractional sampling ratio circuit that is configured to generate a first pattern of fixed point values, wherein an average value of the first…

System for allowing co-existence of transceivers

Granted: October 6, 2015
Patent Number: 9154236
A system may be provided and may include a first transmitter; a first antenna, coupled to the first transmitter; wherein the first transmitter is arranged to transmit via the first antenna first radio frequency (RF) signals; a first receiver; a second antenna, coupled to the first receiver; the second antenna differs from the first antenna; an RF acquisition module that is arranged to acquire second RF signals that are representative of the first RF signals; and an RF suppression module,…

Impedance matching system that has a transformer and method for tuning a system using a transformer

Granted: September 22, 2015
Patent Number: 9143093
A system that includes an amplification circuit; a resonant circuit that is arranged to receive the amplified signal and to output an resonant circuit output signal; wherein the resonant circuit comprises a continually tuned variable capacitor; a transformer that is arranged to receive the resonant circuit output signal and to output a transformer output signal; a coupler that is arranged to sample the transformer output signal and a reflected signal and to output a first signal that…

Dynamic gain switching digital to analog converter

Granted: September 22, 2015
Patent Number: 9143157
A digital to analog converter that may include a digital gain block; an analog gain block; a digital to analog conversion (DAC) block and a controller that is configured to: determine a digital gain factor, selected out of multiple digital gain factors, of the digital gain block and an analog gain factor, selected out of multiple analog gain factors of the analog gain block; wherein the DAC block is preceded by the digital gain block and is followed by the analog gain block; wherein the…

RF switch implementation in CMOS process

Granted: September 15, 2015
Patent Number: 9136838
A dual pole dual through switch for switching between at least four states. The switch comprises four transistors such as N-channel Metal Oxide Semiconductor transistors, such that at each state at most one transistor is in “on” state, and the others are in “off” state. Each transistor has its own control circuit, which provides zero or negative voltage to the drain of the transistor, positive voltage to the source of the transistor, and control alternating voltage to the gate of…