Samsung Electronics Co., Ltd.

Marvell International Limited

Mediatek Singapore Pte. Ltd.

Marvell Semiconductor, Inc.

Sang Won Son

Siu-Chuang Ivan Lu

King Chun Tsai

Neric Fong

Siddharth Seth

Siuchuang Ivan Lu

Tienyu Chang

Xiaohua Yu

Venumadhav Bhagavatula

Bo Wang

Lydi Smaini

Sriramkumar Venugopalan

Kee-Bong Song

Pranav Dayal

Thomas Byunghak Cho

Amitoj Singh

Paolo Rossi

Ajaypat Jain

Lawrence Tse

George Chien

Yuan-Ju Chao

Paul Cheng Po Liang

Dae Hyun Kwon

Chia-Hsin Wu

Elina Nayebi

Tsung-Ming Chen

Chao Lu

Hua Wang

Ti-Ku Yu

Wei-Chia Chan

Qiong Sun

Leycheoh Lim

Anirban Sarkar

Che-Chun Kuo

Yonghua Song

Jun-ho Lee

Wayne A Loeb

Hou-Shin Chen

Young-seok Jung

Chun-Hsien Peng

Alireza Shirvani-Mahdavi

Hyun-seok Yu

Swee-Ann Teo

Sung-En Chiu

Hui-won Je

Siu Chuang Lu

Julia Liu

Alireza Shirvani Mahdavi

Ivan Lu

A wide band matching network for power amplifier impedance matching, the wide band matching network comprising: a power amplifier transistor connected to an output network; the output network including: a series capacitor; an on-chip transformer connected to the capacitor in series, wherein the transformer and the capacitor act as a second order filter; and a port connected to the capacitor and a receiver switch.

24 to 30GHZ wide band CMOS power amplifier with turn-off mode high impedance

A method of compensating for IQ mismatch (IQMM) in a transceiver may include sending first and second signals from a transmit path through a loopback path, using a phase shifter to introduce a phase shift in at least one of the first and second signals, to obtain first and second signals received by a receive path, using the first and second signals received by the receive path to obtain joint estimates of transmit and receive IQMM, at least in part, by estimating the phase shift, and compensating for IQMM using the estimates of IQMM. Using the first and second signals received by the receive path to obtain estimates of the IQMM may include processing the first and second signals received by the receive path as a function of one or more frequency-dependent IQMM parameters.

Systems, methods and devices for joint calibration of transmit and receive IQ mismatch

Disclosed is a device including a first line, a second line including a first section disposed on a first side of the first line and a second section disposed on a second side of the first line, the second side being opposite to the first side and the second section being separate from the first section by a distance, and at least one bridge electrically connecting an end of the first section with an end of the second section and extending across the first line. The device may be a directional coupler that achieves significantly higher directivity than conventional directional coupler structures, and hence, improves power detection accuracy.

Compact high-directivity directional coupler structure using interdigitated coupled lines

A radio frequency integrated circuit (RFIC) and method of communication are provided. The RFIC includes phased-locked loop (PLL) and data stream circuitry and a plurality of tiles in communication with the PLL and data stream circuitry. The plurality of tiles includes comprising at least one tile for each frequency band of the RFIC. The plurality of tiles are configured to communicate a data stream signal between tiles in a cascading sequence. Each tile of the plurality of tiles includes a plurality of up/down conversion mixers for converting the data stream signal between an intermediate frequency (IF) and a radio frequency (RF). Each tile also includes a plurality of front end (FE) elements, each in communication with a corresponding antenna and an up/down conversion mixer of the plurality of up/down conversion mixers.

Tile-based phased-array architecture for multi-band phased-array design and communication method

A band-switching network includes a dual-band balun and a switch network. The dual-band balun includes a first output and a second output. The switch network includes a first switch and a second switch in which an input to the first switch is coupled to the first output and an input to the second switch is coupled to the second balanced output. The dual-band balun further includes a primary coil, a first secondary coil and a second secondary coil in which the first secondary coil is coupled to the first balanced output and the second secondary coil is coupled to the second balanced output. In one embodiment, the primary coil and the first secondary coil are coupled by a first coupling factor k, and the primary coil and the second secondary coil are coupled by a second coupling factor kthat is different from the first coupling factor k.

Band switching balun

24 to 30GHz wide band CMOS power amplifier with turn-off mode high impedance

A wireless communication method using a plurality of antennas performed by a controller, the wireless communication method including obtaining a target transmission power level and beam forming information, determining at least one inactive antenna from among the plurality of antennas, based on the target transmission power level and the beam forming information, and controlling transmission signals provided to the plurality of antennas such that transmission via the at least one inactive antenna does not occur.

Methods and apparatuses for wireless communication using antenna array

An electronic circuit and method are provided. The electronic circuit includes an in-phase (I)-quadrature (Q) amplifier including an I cascode branch and a Q cascode branch, the IQ amplifier configured to receive a differential input and control signals, control, based on the control signals, gate voltages in the I cascode branch and gate voltages in the Q cascode branch, generate an I output signal with the I cascode branch, and generate a Q output signal with the Q cascode branch, and a quadrature coupler configured to perform quadrature summation of the I output signal and the Q output signal and generate a final phase shifted output.

Method and circuit for power consumption reduction in active phase shifters

A method of gain step calibration by a user equipment (UE) includes selecting, a l th antenna path having a gain Gfor a transmitter (Tx) of the UE and a corresponding m th antenna path having a gain Gfor a receiver (Rx) of the UE; determining, a first loopback signal power for the l th antenna path having the gain Gfor the transmitter (Tx) of the UE and the corresponding m th antenna path having the gain Gfor the receiver (Rx) of the UE; determining, a second loopback signal power for the l th antenna path having a gain G'for the transmitter (Tx) and the corresponding m th antenna path having the gain Gfor the receiver (Rx); and determining, a transmitter gain step of the UE based on the first loopback signal power and the second loopback signal power.

Method and apparatus for loopback gain step calibration on RF chain with phase shifter

An apparatus and method are provided. The apparatus includes a multiplexer, including first, second, and third inputs, and an output; a first transistor, including a gate connected to the multiplexer, and first and second terminals; a first variable capacitor, including a first terminal connected to the first transistor, a second terminal, and an input; a first inductor, including a first terminal connected to the first transistor, and a second terminal connected to the second terminal of the first variable capacitor; a second transistor, including a gate connected to the output of the multiplexer, a first terminal, and a second terminal connected to the second terminal of the first inductor; a second inductor mutually coupled to the first inductor, including a first and second terminals; and a balun-bias switch, including first, second, and third inputs, and an output connected to the second terminal of the second inductor.

Apparatus for and method of programmable matching network for multiple signal types

An apparatus and a method. The apparatus includes passive mixers, wherein each of the passive mixers includes a first input for receiving BB, a second input for receiving, a third input for receiving BB, a fourth input for receiving, a fifth input for receiving a first clock signal with a unique phase shift within one of the passive mixers, a sixth input for receiving a second clock signal with a unique phase shift within one of the passive mixers, a seventh input for receiving a third clock signal with a unique phase shift within one of the passive mixers, an eighth input for receiving a fourth clock signal with a unique phase shift within one of the passive mixers, and at least one output; and a voltage-domain vector summation array connected to the output of each of the passive mixers.

System and method for linearizing a transmitter by rejecting harmonics at mixer output

An amplifier circuit is provided. The amplifier circuit includes an amplifier stage; a plurality of variable transistors connected to the amplifier stage; a transconductor connected to at least one of the plurality of variable transistors; and a hybrid differential envelope detector and full-wave rectifier connected to the transconductor.

Apparatus and method for dynamically biased baseband current amplifier

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Palo Alto, CA, United States of America

Sang Won Son