RF Validation Engineer

3 weeks ago

San Diego, United States Spreadtrum Communications USA Full time

Company Overview

Spreadtrum is a leading fabless semiconductor company committed to the independent R&D of core chipsets in mobile communications and IoT. Its products cover mobile chipset platforms supporting 2G / 3G / 4G / 5G communication standards, RF chipsets, wireless connection chipsets, security chipsets, TV chipsets, and image sensor chipsets. With more than 5,000 staff, 14 R&D centers and 7 customer support centers around the world, we have been one of the top three mobile baseband chipset suppliers in the world, the largest pan-chip provider, and the leading 5G chipset design company in Far East.

Scope

  • Motivated RF Validation engineer contributing as a member of the RF System and DVT team
  • This position is part of the RF Cellular IC Engineering Division in San Diego, CA
  • Product focus on wireless radio transceivers for cellular handset platforms
  • Experience in 2G/3G/4G/5G technologies RF System and DVT testing ( NF,IP2,IP3, ACLR, CIM3, Phase Noise, Lock Time)
  • Knowledge of RF Transceiver debug and characterization, as well as a strong academic background is strongly preferred


Specific Responsibilities

  • RF Systems evaluation and DVT testing of designs of high performance and highly manufacturable products for wireless cellular and networking applications
  • RF systems evaluation (Link budget analysis, NF, IP2, IP3, Blockers, EVM) and DVT testing of designs of RF and mixed signal circuit in commercial/standard CMOS technologies for mass productions
  • Develop test solutions for RF Transceiver products using (e.g. MatLab, C#, Python scripting, Labview, etc.)
  • Design and debug of test interface hardware and software:
  1. Test RF Systems parameters for RX receive receivers (LNA/Mixers, Lo chains, channel filters, and bb drivers)
  2. Test RF Systems parameters for Integrated switch-cap and continuous time baseband filters
  3. Test RF Systems parameters for High-speed Analog-to-Digital and Digital-to-Analog Converters
  4. Test RF Systems parameters for RF VCO's, PLL synthesizers, Clock oscillators, and clock buffer circuitry
  • Co-work with local RFIC/PLATFORM/Testing team on RF/system level issues through the project development
  • Design and validation of integrated calibration and test algorithms
  • Co-work with worldwide RF hardware team, RF system team on the development status sync up, issue debugging
  • Support all stages of development from design through prototype, beta, production and support
  • Maintain skills and expertise in the RF, and telecommunications industry

Required Skills/Abilities:

  • MSEE or BSEE with equivalent work experience in RF System and DVT test engineering
  • 1 year RF design experience, Mobile phone, handheld wireless product is a plus
  • Knowledge in RF blocks, e.g transmitter, receiver, Preferably in NR/LTE/WCDMA/CDMA/GSM cellular system
  • RF debug experience, trouble-shooting capability, familiar with RF design tool and equipment, (Spectrum Analyzers, Signal generators, Network Analyzers, Fast Oscilloscopes)
  • Demonstrated knowledge in cellular systems (5G, LTE, WCDMA, GGE) is desired
  • System-level analysis including but not limited to

– Linear/non-linear simulation and measurement (Gain, IMD, P1dB, IP3, Blocker Performance, etc.)

– Cascaded chain analysis (Noise figure, gain distribution, dynamic range, etc.)

– Modulated measurements in dynamic radio configurations (EVM, phase error, spectral mask, etc.)

  • Good oral, written communication, and organizational skills


Education and Experience:

  • MSEE or BSEE with equivalent work experience

Key Personal and Professional Attributes

Spreadtrum is committed to driving technological innovation, prioritizing customer needs, fostering collaborative decision-making, and maintaining a deep enthusiasm for the next generation of communication technologies. We seek candidates who share these core values.

The ideal candidate will be self-motivated, highly creative, and eager to engage with cutting-edge technologies. This role offers significant opportunities for growth, allowing you to contribute to complex and challenging projects within a dynamic environment.

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