Electronics Engineer — RF And Analog Design

EMTensor GmbH; Bengaluru; On-site; INR 1,800,000 - 2,600,000; Full time

Job summary

EMTensor GmbH in Bengaluru is seeking an experienced RF hardware engineer to own RF and analog boards from concept to production. You will work hands-on at the bench with a VNA and spectrum analyzer, selecting parts and briefing the PCB designer to ensure the board delivers the required performance.

Responsibilities include designing 0.5–3 GHz front‑end modules, LO distribution and PLLs, ADC/DAC integration, and EMI/EMC readiness for medical-grade hardware.

Qualifications

• Engineering degree in electronics or RF/microwave.
• 7+ years designing RF and analog boards.
• Experience front-end design 0.5–3 GHz: LNA, mixer, filter, T/R.
• Experience selecting 16–24-bit ADCs/DACs with rationale.
• Synthesizer, PLL and phase-noise design and clock distribution.
• External LO on an integrated transceiver with multi‑chip synchronization.
• Experience taking a reference design to a production board.
• Proficiency in English for contractor communications.

Responsibilities

• Design RF and analog receive/transmit boards in 0.5–3 GHz range.
• Design front‑end electronics for antenna elements and isolation.
• Select and justify high‑resolution ADCs/DACs (16–24 bit).
• Develop clocking/LO distribution and phase stability across channels.
• Integrate transceivers with external LO and multi‑chip sync.
• Brief PCB designers and supervise layout including impedance control.
• Lead EMI/EMC readiness and prepare for compliance testing.
• Produce BOMs and design files for manufacturing.

Skills

RF front-end design

S-parameters analysis

Phase stability management

VNA measurements

PCB layout ownership

Signal integrity

DDR3/4 interfaces

External LO synchronization

EMI/EMC prep

Technical English

Education

Engineering degree in electronics, RF/microwave

MSc in RF/microwave

Tools

Keysight ADS

AWR Microwave Office

HFSS

CST

Altium Designer

Mentor Graphics

OrCAD

KiCad

Spectrum Analyzer

Oscilloscope

Job description

About EMTensor

EMTensor develops electromagnetic tomography (microwave) brain scanning systems — a new imaging modality for the diagnosis of stroke and traumatic brain injury, and for 24/7 monitoring of tissue viability and treatment response. Our scanner is built around a multi-channel, phase-coherent RF array: dozens of antenna elements, each with its own front end, all locked to a common LO and calibrated to a fraction of a degree of phase. The quality of the image depends directly on the quality of that hardware. The company is headquartered in Vienna, Austria, with an engineering office in Bengaluru, India. We are a multidisciplinary international team of scientists, engineers and clinicians, backed by our founders and by venture capital, with 30 years of research behind the technology, more than 60 publications and 30+ issued and pending patents.

The Role

You will own RF and analog hardware at the board level — from concept and simulation through schematic, layout supervision, bring‑up and measurement, to a documented design that goes into a medical product. This is a hands‑on position: you select the parts, you brief the PCB designer, you sit at the bench with a VNA and a spectrum analyzer, and you are responsible for the numbers the board actually delivers. The central technical challenge is phase‑coherent multi‑channel reception: driving integrated transceivers from an external LO, synchronizing several chips, and holding channel‑to‑channel phase stable across the array.

Key Responsibilities

• Design RF and analog receive/transmit boards in the 0.5–3 GHz range: LNAs, mixers, filters, T/R switching, impedance matching, noise and gain budgets.
• Design the electronics that sit at the antenna element — front‑end amplification, shielding, channel‑to‑channel isolation.
• Select and design in high‑resolution ADCs and DACs (16–24 bit), and justify the choice against SNR, SFDR, ENOB and the system noise budget.
• Design clocking and LO distribution: fractional‑N synthesizers, PLLs, VCOs, reference distribution, phase‑noise and jitter budgets.
• Run integrated RF transceivers (AD9361 / AD9363 / AD9371 / ADRV9009 class or equivalent) from an external LO and phase‑synchronize multiple chips.
• Simulate before you build — RF and circuit simulation in Keysight ADS or AWR Microwave Office, EM simulation of antennas and structures in HFSS or CST.
• Capture schematics in Altium Designer (or Allegro / Mentor / OrCAD / KiCad), brief and supervise the PCB designer, and take responsibility for the resulting layout: stack‑up, controlled impedance, BGA fanout, DFM.
• Handle high‑speed digital alongside the RF: signal‑integrity analysis for DDR3/4, LVDS, JESD204B/C, Gigabit Ethernet and SERDES.
• Port reference designs and SoMs onto custom boards — including Zynq‑7000 class SoCs, with DDR3, power architecture and sequencing, and boot.
• Bring boards up in the lab: VNA, spectrum analyzer, oscilloscope, signal generator, channel‑to‑channel phase measurement, calibration and debug.
• Prepare boards for EMI/EMC compliance testing and fix what the test house finds.
• Produce the documentation, BOM and design files that let the board be manufactured and maintained.
• Work with contract manufacturers and PCB vendors, and with our RF, FPGA, DSP and software teams in Bengaluru and Vienna.

Required Qualifications

• Engineering degree in electronics, RF/microwave or a related field, and 7+ years designing RF and analog boards.
• Demonstrable RF front‑end design in the 0.5–3 GHz range: LNA, mixer, filter, T/R switch, matching networks, S‑parameters, noise figure and gain budgets.
• Personal experience selecting and designing in 16–24‑bit ADCs/DACs, with the reasoning behind the choice.
• Synthesizer, PLL and phase‑noise design — fractional‑N, VCO, reference and clock distribution, phase stability between channels.
• External LO on an integrated transceiver — running an AD9361 / AD9363 / AD9371 / ADRV9009 class device (or equivalent) from an external LO and phase‑synchronizing several of them. This is the key requirement for the role.
• Porting a reference design or SoM to a custom board — a board you took from someone else’s design to your own, not edits to an existing project.
• Zynq‑7000 or a comparable SoC at board level: DDR3, power and sequencing, BGA fanout, boot.
• RF and EM simulation: Keysight ADS or AWR Microwave Office, plus HFSS or CST.
• Schematic capture in Altium Designer, or Cadence Allegro / Mentor / OrCAD / KiCad.
• Ownership of PCB layout: you have briefed a PCB designer, reviewed and accepted the result, and worked with controlled impedance and defined stack‑ups.
• Signal integrity and high‑speed interfaces: SI analysis, DDR3/4, LVDS, JESD204B/C, Gigabit Ethernet, SERDES.
• Hands‑on measurement: VNA, spectrum analyzer, oscilloscope, signal generator, channel‑to‑channel phase.
• EMI/EMC: preparing a board for compliance testing and fixing it afterwards.
• At least one board you took all the way through to a working product — power‑up, debug, measurement, documentation and BOM — not schematics alone.
• Technical English sufficient for written correspondence with contractors and PCB vendors.

Preferred Qualifications

• MSc in RF/microwave or analog design.
• Medical hardware experience, IEC 60601 and associated EMC testing.
• Multi‑channel systems: MRI coils, phased arrays, radar, digital beamforming.
• SDR ecosystem experience: GNU Radio, Vivado, MATLAB/Simulink.
• Python or MATLAB for measurement processing and RF calibration.
• Experience taking a product from prototype into series production.

What We Are Not Looking For

To save everyone’s time: this is not a digital design role, and it is not a simulation‑only role. If RF and analog appear in your CV mainly in passing, if layout and lab debug were always someone else’s job, or if you cannot name a component you selected yourself and explain why, this position will not be a good fit.