Sr. RF Systems Engineer

6 months ago


Shenzhen, China Amazon Innovation Center (Shenzhen) Company Limited - O82 Full time
Amazon Lab126 is an inventive research and development company that designs and engineers high-profile consumer electronics. Lab126 began in 2004 as a subsidiary of Amazon.com, Inc., originally creating the best-selling Kindle family of products. Since then, we have produced groundbreaking devices like Fire tablets, Fire TV and Amazon Echo. What will you help us create?

Key job responsibilities
The primary responsibility of this role is to design and deliver wireless solutions including schematic/layout on WiFi/BT/WAN/GPS/ZB/Lora related products and co-work with other cross function team to detect/Debug any wireless issues to ensure the performance and product is suitable for mass production in high volume. The candidate will get involved in innovative process improvement, technology initiatives and experiment his own ideas that improve cost, quality and customer experience.
•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

We are open to hiring candidates to work out of one of the following locations:

Shenzhen, 44, CHN

BASIC QUALIFICATIONS

- Electrical Engineering degree, with hands on experience in designing and debugging RF circuits and wireless system, 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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