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RADWIN
RADWIN
201 – 500 Angajați
ConsultanțăIndustria prelucrătoareLogistică
RADWIN dezvoltă sisteme wireless de bandă largă de tip punct-la-multipunct și punct-la-punct, pentru conectivitate în medii dificile. Portofoliul său susține accesul în bandă largă, legăturile de transport ale rețelelor, rețelele private, conexiunile pentru supraveghere video și conectivitatea pentru trenuri, vehicule și nave. Compania afirmă că sistemele sale sunt implementate în peste 170 de țări și sunt concepute să mențină performanța în condiții de interferențe și vizibilitate directă obstrucționată, folosind tehnologii precum antenele cu formare de fascicul și interfața sa Air Interface. Activitatea RADWIN cuprinde comunicațiile wireless, producția și conectivitatea pentru aplicații de transport și infrastructură.
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Locurile de muncă ale companiei

Senior RF Hardware Engineer, Wi-Fi and Frequency Conversion

Designing Qualcomm-based Wi-Fi boards and frequency-conversion circuits for RADWIN. Leads RF design, board bring-up, calibration, verification, and production support.

INIndiaHibridNormă întreagăSeniorLimbă Obligatorie: englezăInginer hardware
Python

Descriere

  • Develop wireless hardware using Qualcomm Wi-Fi chipsets, including RF front ends and frequency-conversion circuits.
  • Own technical work from system analysis and schematic design through board bring-up, calibration, optimization, and verification.
  • Design Wi-Fi RF boards with Qualcomm radio ICs, including front-end modules, power amplifiers, low-noise amplifiers, filters, switches, matching networks, and supporting power and clock circuits.
  • Build frequency-conversion circuits using synthesizers, PLLs, VCOs, mixers, and local-oscillator distribution.
  • Assess phase noise, spurious signals, image rejection, and isolation.
  • Create and maintain OrCAD Capture schematics, select components, and prepare bills of materials.
  • Guide PCB layout and review stack-up, RF routing, impedance control, grounding, shielding, and decoupling.
  • Bring up, tune, and characterize Wi-Fi hardware with chipset vendor tools.
  • Configure and validate BDFs, front-end settings, transmit power tables, and calibration data.
  • Debug and improve RF performance across EVM, output power, receiver sensitivity, spectral emissions, IQ imbalance, LO leakage, and interference.
  • Tune and validate digital predistortion when applicable.
  • Plan and run RF verification across frequencies, bandwidths, modulation schemes, RF chains, temperatures, and supply conditions, including MIMO and multi-link operation where applicable.
  • Build automated measurement scripts, analysis, and reporting tools for development, regression testing, and production support.
  • Analyze RF systems, including link budgets, cascaded gain and noise figure, linearity, dynamic range, filtering, and spurious products.
  • Use circuit and electromagnetic simulations to guide designs and compare results with measurements.
  • Work with firmware, software, mechanical, PCB layout, and manufacturing teams, plus chipset and component vendors, to resolve integration issues and support product release.

Cerințe

  • Bachelor’s degree in Electrical Engineering or a related field.
  • Extensive hands-on RF hardware development experience, with ownership of complex designs from concept through validation.
  • Experience designing and bringing up Wi-Fi boards using Qualcomm or comparable radio ICs; Qualcomm experience is strongly preferred.
  • Practical experience with Wi-Fi calibration, vendor test tools, BDFs or similar configuration files, and RF performance debugging.
  • Experience designing synthesizer-based frequency-conversion circuits.
  • Proficiency with OrCAD Capture and experience guiding and reviewing RF PCB layouts.
  • Strong laboratory skills with spectrum and vector signal analyzers, signal generators, VNAs, power meters, oscilloscopes, and Wi-Fi test platforms such as LitePoint.
  • Practical fine-pitch soldering, rework, and board-level troubleshooting skills.
  • Experience building automated RF tests with Python, MATLAB, or similar tools.
  • Experience with RF simulation tools such as ADS or AWR and correlating simulations with measured results.
  • Solid knowledge of Wi-Fi PHY, modulation, OFDM, MIMO, and transmitter and receiver performance metrics.
  • Ability to work independently and collaborate across engineering disciplines.
  • Excellent written and spoken English.
  • Experience with Wi-Fi 6, 6E, or 7, including multi-link operation (MLO).
  • Microwave or millimeter-wave hardware experience.
  • Experience with electromagnetic simulation tools such as HFSS or CST.
  • Experience with regulatory testing, including FCC and ETSI requirements.
  • Experience with production calibration and transferring RF designs into manufacturing.

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