Dsp Group Limited

Yaron Hasson

Alexander Mostov

Ron Pongratz

Sharon Betzalel

Alex Mostov

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 sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.

CMOS based TX/RX switch

CMOS based RF antenna switch

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 the transistor. The switch can be used on-chip for devices. Such devices may include a base station or a handset of a cordless phone.

Growing community of inventors

Elad, Israel

Yaron Hasson