Technical Expertise

RF systems, circuits and semiconductor technologies.

Broad experience allows problems to be viewed simultaneously at the system, architecture, circuit and device levels.

Circuits & blocks

Low-noise amplifiers (LNA)

Mixers and frequency conversion

IF amplifiers, AGC, limiters and analog circuits

Power amplifiers and PA control

VCOs, dividers, multipliers and synthesizers

RF switches, SOI switch design and antenna switching

Active/passive filters and front-end filtering

Bias circuits, bandgap/PTAT structures and analog support circuitry

Systems & applications

Mobile phone RF front ends (RFFE)

GPS receiver architectures and RF ASICs

SATCOM and avionics radios

Cellular base-station receiver RFICs

Data-link and other commercial/military radios

Coexistence, carrier aggregation, linearity and spurious-emission analysis

System requirements flow down to circuit requirements.

Modern radio design requires more than optimizing a circuit in isolation. Gain, NF, IP2/IP3, power consumption, insertion loss, isolation, filter rejection, bandwidth, size and cost are coupled. The design task is to understand those interactions and set the right specifications at each level.

Representative original RF circuit design.