Radio Frequency Engineer

TechDoQuest; Fremont (CA); On-site; USD 100,000 - 150,000; Full time

Job summary

TechDoQuest in Fremont, California seeks an RF Test Engineer to configure, calibrate, and operate multi-axis OTA test chambers across sub-6 GHz and mmWave ranges, performing TRP, TIS, EIRP, EIS, and MIMO OTA tests.

You will validate satellite positioning with A-GNSS OTA sensitivity evaluations, investigate Desense sources, maintain chamber verification logs, and ensure compliance with CTIA and 3GPP specifications for regulatory submissions.

Qualifications

• Bachelor’s degree in Electrical Engineering, Telecommunications, or a highly related technical discipline (Master’s Degree preferred).
• 2 to 5+ years of direct RF OTA testing experience in an RF lab environment.

Responsibilities

• Configure, calibrate, and operate multi-axis OTA anechoic test chambers across FR1 and FR2 frequency ranges.
• Perform radiated measurements including TRP, TIS, EIRP, EIS, and MIMO OTA throughput testing.
• Validate satellite positioning performance via A-GNSS OTA sensitivity evaluations.
• Investigate RF Desense sources and isolate internal noise degrading receiver performance.
• Maintain chamber verification logs and perform routine calibrations for repeatability and accuracy.
• Execute testing matrices per CTIA, 3GPP TS 38.521/38.151, and North American operator requirements.
• Interface with TCB team and project managers to package validation data for regulatory submissions (FCC, CE, ISED).

Skills

Chamber Architectures

Wireless Protocols

RF Test Equipment

Automation Software

Foundational Knowledge

Analytical Thinking

Documentation

Communication

Education

Bachelor’s Degree in Electrical Engineering, Telecommunications, or related field

Tools

Keysight UXM 5G

Rohde & Schwarz CMX500/CMW500

Anritsu MT8000A

ETS-Lindgren EMQuest

R&S AMS32

Job description

Core Responsibilities

• Configure, calibrate, and operate multi-axis OTA anechoic test chambers (e.g., ETS-Lindgren AMS systems) across FR1 (Sub-6 GHz) and FR2 (mmWave) frequency ranges.
• Perform comprehensive radiated measurements including TRP, TIS, EIRP, EIS, and MIMO OTA throughput testing.
• Validate satellite positioning performance by executing A-GNSS (GPS/Glonass/Galileo) OTA sensitivity evaluations.
• Conduct systematic RF Desensitization (Desense) investigations to isolate internal platform noise (e.g., from display panels, high-speed digital buses, or power supplies) degrading receiver performance.
• Maintain chamber verification logs, performing routine range calibrations (path loss measurements using standard gain horn antennas) to ensure measurement repeatability and system accuracy.

Test Plan Compliance & Certification

• Execute testing matrices in strict accordance with CTIA Test Plan for Wireless Device Over-the-Air Performance, 3GPP Technical Specifications (TS 38.521 / 38.151), and specific North American wireless operator requirements.
• Analyze test data against strict regulatory and carrier acceptance limits, identifying and logging edge-case failures.
• Interface directly with the Telecommunications Certification Body (TCB) team and project managers to package validation data for formal regulatory submissions (FCC, CE, ISED).

Job Title: RF Test Engineer

Job Title: RF Test Engineer

Location: Fremont , California

Core Responsibilities

• Configure, calibrate, and operate multi-axis OTA anechoic test chambers (e.g., ETS-Lindgren AMS systems) across FR1 (Sub-6 GHz) and FR2 (mmWave) frequency ranges.
• Perform comprehensive radiated measurements including TRP, TIS, EIRP, EIS, and MIMO OTA throughput testing.
• Validate satellite positioning performance by executing A-GNSS (GPS/Glonass/Galileo) OTA sensitivity evaluations.
• Conduct systematic RF Desensitization (Desense) investigations to isolate internal platform noise (e.g., from display panels, high-speed digital buses, or power supplies) degrading receiver performance.
• Maintain chamber verification logs, performing routine range calibrations (path loss measurements using standard gain horn antennas) to ensure measurement repeatability and system accuracy.

Test Plan Compliance & Certification

• Execute testing matrices in strict accordance with CTIA Test Plan for Wireless Device Over-the-Air Performance, 3GPP Technical Specifications (TS 38.521 / 38.151), and specific North American wireless operator requirements.
• Analyze test data against strict regulatory and carrier acceptance limits, identifying and logging edge-case failures.
• Interface directly with the Telecommunications Certification Body (TCB) team and project managers to package validation data for formal regulatory submissions (FCC, CE, ISED).

Technical Requirements & Qualifications

Education & Experience

• Bachelor’s Degree in Electrical Engineering, Telecommunications, or a highly related technical discipline (Master’s Degree with an RF/Electromagnetics focus preferred).
• 2 to 5+ years of direct, hands-on experience in an RF laboratory environment specifically executing OTA testing.

Technical Skills & Instrumentation Knowledge

• Chamber Architectures: Deep familiarity with conical-cut and great-circle-cut anechoic chamber testing geometries.
• Wireless Protocols: Solid baseline knowledge of 5G NR (SA/NSA), LTE Advanced, Wi-Fi 7 / 6E (802.11be/ax), Bluetooth, and UWB physical layer parameters.
• RF Test Equipment: Hands-on operational mastery of network analyzers, spectrum analyzers, and radio communication testers (e.g., Keysight UXM 5G, Rohde & Schwarz CMX500 / CMW500, Anritsu MT8000A).
• Software & Automation: Experience utilizing automated lab software suites (e.g., ETS-Lindgren EMQuest, R&S AMS32). Proficiency in Python for parsing .csv data files and interfacing with instrument APIs is highly preferred.
• Foundational Knowledge: Solid grasp of Smith charts, impedance matching, polarization alignment, Friis transmission equations, and measurement uncertainty calculations.
• Analytical Problem Solving: A methodical approach to isolating variables when troubleshooting system anomalies or uncharacteristic device failures inside the chamber.
• Meticulous Documentation: Strong attention to detail when logging hardware configurations, test settings, and EUT (Equipment Under Test) software build versions.
• Communication: Ability to clearly explain complex radiated failures and spatial pattern nulls to non-RF internal partners.