John Reginald Abarrientos

Software Engineer

United Kingdom1 yr 6 mos experience

Key Highlights

Expert in RF design and compliance testing.
Proficient in automation of testing processes.
Strong background in computational electromagnetics.

Stackforce AI infers this person is a skilled RF and Electronics Engineer with expertise in compliance and testing in the electronics industry.

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Skills

Core Skills

Rf DesignPcb DesignAntenna Design And Simulation

Other Skills

Altium Designer PCBOscilloscopeDMMVNAPSUSpectrum AnalyzerAntenna MeasurementsAutomation ScriptsRF ConnectorsEMC ComplianceANSYS HFSSPython (Programming Language)RCHTML

About

Experienced RF/ Electronics Design Engineer with expertise in hardware design engineering, and pre-compliance testing. Demonstrated success in optimizing performance, ensuring compliance, and reducing costs. Strong proficiency in computational electromagnetics, 3D simulations and programming for testing. Accomplished in managing full anechoic chamber operations and automating test processes and reports.

Experience

1 yr 6 mos

Total Experience

Average Tenure

Current Experience

Kaertech, a baracoda company

Senior RF/Design Engineer

Dec 2021 – Aug 2022 · 8 mos

Schematic design, library management, and PCB layout considerations for analog, high-speed, and RF circuits (controlled impedance, length matching) using Altium.
Product testing, evaluation and failure analysis using oscilloscope, ESD gun, DMM, VNA, PSU, electronic load and spectrum analyzer.
Board level and system level debugging and testing.
Created test plans and specifications for acceptance criteria, component derating, firmware flashing and validation, and RF tests.
Sample preparation for conducted and radiated RF Tests.
Integration of different sensor technologies and peripherals (accelerometer, IMU, LED and LED drivers, Hall-effect sensors, motor driver, NFC, oscillators, I/O expander, and load switches) using different communication protocols (I2C, SPI, and UART).
Skilled with HW debuggers (e.g. Segger/J-Link).
Discussion with certification labs for product compliance for different standards: Harmful substance (RoHS and REACH), Safety tests (IEC/EN 60335-1), RF Emissions and SAR testing.
Certification tests and standards for specific type of products: medical devices, IT equipment, portable devices, and commercial products.

Altium Designer PCBOscilloscopeDMMVNAPSUSpectrum Analyzer+2

Stamina4space

Full Anechoic Chamber Operations Manager

Jan 2021 – Nov 2021 · 10 mos

Antenna measurements such as horn antennas, patch antennas, log-periodic antennas and
dipoles (UHF, VHF)
Automation of test reports via scripts for efficient documentation and quick delivery of test results to clients.
Evaluating antenna factors and desired measurements to determine test feasibilities.
Planning the appropriate test setup through correct selection of suitable RF connectors (SMA, 2.92mm ,
Type N, BNC), cables, adaptors, mounts and probes/source antennas (standardized horn antennas).
Performing acceptance tests and maintenance on the full anechoic chamber system to ensure proper
functionality of each section for accurate antenna measurements.
Configuring the crucial parameters: probe-to-AUT radius, distance to guarantee far field radiation, for
the automated antenna measurement involving VNA, antennas, and positioners.