Job Description

RF Design Engineer

Location:

Greenford, London

Contract:

Permanent, full time

Working pattern:

Office based only

We are hiring an RF Design Engineer with hands-on experience designing power amplifiers from 4 W to 100 W. You will take designs from concept to production, carry out simulation, schematic capture, PCB layout, bring-up and test. Familiarity with antennas, matching networks and practical RF measurement is required. Pulsonix proficiency is essential.

Responsibilities

Design, simulate and develop RF power amplifiers in the 4 W to 100 W range, from requirements through to validated hardware Carry out RF simulations, stability analysis, matching and optimisation for efficiency, linearity and thermal performance Produce schematics and multilayer PCB layouts suitable for RF and mixed-signal designs, including controlled impedance and stack-up definition Select devices, bias networks and protection circuits for LNA, driver and PA stages, including GaN and LDMOS where appropriate Design and tune matching networks and filters, including harmonic control Work with antenna engineers to review antenna choices, matching and integration Plan and perform laboratory testing using VNA, spectrum analyser, power meters and load-pull or equivalent methods Document designs, test plans, results and release packs for manufacture Maintain BoMs, revision control and engineering change records
Essential skills and experience

Proven RF power amplifier design experience covering low and high power levels between 4 W and 100 W Strong understanding of RF fundamentals including S-parameters, stability, load-pull concepts, linearity and thermal management Competent with schematic capture and PCB layout for RF designs, including grounding, shielding and isolation practices Pulsonix experience for both schematics and PCB layout Ability to create test setups and interpret measurements using VNA, spectrum analyser and power measurement equipment Working knowledge of antennas, matching and feed networks Practical prototyping skills including rework, soldering of fine-pitch and RF packages and fixture design Clear technical writing and the ability to produce high quality documentation Must be able to work on site full time
Desirable

Experience with GaN and LDMOS PA design and bias control Thermal and mechanical integration of RF hardware including heatsinking and airflow Experience with linearisation techniques such as predistortion or feedback Familiarity with EMC and radio standards and pre-compliance testing Use of RF simulation tools such as ADS, AWR or open-source equivalents Experience with automated test using Python or similar Knowledge of antenna measurements and basic chamber practice
Tools and technologies

Pulsonix for schematics and PCB layout RF lab instruments including VNA, spectrum analyser, power meters and signal sources Version control and issue tracking tools such as Git and Jira or equivalents Office tools for reporting and documentation
Eligibility

Candidates must have the right to work in the UK.

Please send your CV and a short cover letter outlining relevant RF PA projects

Job Type: Full-time

Pay: Up to 60,000.00 per year

Benefits:

Company pension Free parking On-site parking
Work Location: In person