Senior RF Systems Engineer

3 weeks ago

Shenzhen, Guangdong, China Amazon Innovation Center (Shenzhen) Company Limited - O82 Full time
Job Summary

We are seeking a skilled Sr. RF Systems Engineer to join our team at Amazon Innovation Center (Shenzhen) Company Limited - O82.

About the Role

The primary responsibility of this role is to design and deliver wireless solutions for our high-profile consumer electronics products. This includes schematic/layout on WiFi/BT/WAN/GPS/ZB/Lora related products and co-working with other cross-function teams to detect/Debug any wireless issues to ensure the performance and product is suitable for mass production in high volume.

Key Responsibilities
  • Work within a project team and take responsibility for wireless technology implementation such as WAN, WiFi, BT etc, and wireless system performance optimization.
  • Wireless system performance and RF specification definition based on device architect, business model and other predefined functions.
  • Design, Simulate, implement, validate and optimize RF circuitry (including schematic and PCB layout) and system performance.
  • Meet with vendors and technology suppliers to key components selection and qualification.
  • Characterize RF test coverage, system de-sense, and EMI issues to meet requirements.
  • Perform simulations for RF design and de-sense mitigation.
  • Take the product through development, compliance testing, operator testing, ramp up and sustaining.
  • Support radiated manufacturing test and defects in the factory.
  • Optimize and improve any defect process from design/validation/manufacturing.
Requirements
  • Electrical Engineering degree, with hands-on experience in designing and debugging RF circuits and wireless systems, failure analysis and functional verification.
  • Minimum 8 years of technical working experience in high volume electronic design and manufacturing, preferably in Wifi/BT related products or similar consumer electronics supporting high data rates transmission and other wireless technologies such as WAN and Zigbee.
  • Familiar with general wireless communications standards such as IEEE802.11 a/b/g/n/ac/ax and 3GPP (for LTE/WCDMA/GSM).
  • Capability to develop system and RF performance specification and its relative test requirement and test cases.
  • Familiar with wireless system requirements, RF circuitry design considerations, components characteristic, schematic design and layout techniques.
  • Familiar with CAD software such as Cadence, Allegro, PADS and simulation tool such as HFSS, CST, ADS.
  • Perform simulations for RF design and de-sense mitigation (3D EM and circuit level simulations).
  • Characterize and debug de-sense and EMI issues to meet requirements.
  • Perform multi-radio coexistence mitigation including RF link budget planning and issue debugging.
  • Familiar with test sets such as Litepoint IQ, Anritsu8870A, Agilent8960, Anritsu8820 or CMW500/270 for RF testing and other instruments such as VNA, spectrum analyzer, oscilloscope and other typical RF accessories.
  • English fluent and communication skill is good.
Preferred Qualifications
  • Master's degree in electrical engineering, computer engineering, or equivalent.
  • Experience working with interdisciplinary teams to execute product design from concept to production.
  • Experience with the project management of technical projects.
  • Knowledge of SI and PI on high speed interface such as HDMI, LVDS/Mipi, USB, PCIE, and power distribution network, etc.
  • Knowledge of compliance testing for FCC/CE, EMI standards.
  • Antenna design knowledge is a plus.
  • Knowledgeable in production control processes, data analysis/interpretation GR&R, Cp/Cpk and correlation analysis.

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