M

Mini-Circuits

Designs, manufactures, and distributes RF/microwave components

RF Test Engineer - MMIC

Full-Time
$90k - $115k
Junior
Bachelor's, Master's
Carlsbad, CA, USA
In Person
Electrical EngineeringRF & Microwave Engineering

About the job

Requirements
  • A Bachelor's degree in Electrical Engineering or a similar engineering field and 2 years of experience in RF product design and test, or a Master's degree in Electrical Engineering or a similar engineering field and 1 year of experience in RF product design and test.
  • Basic understanding of surface-mount and microelectronic chip-and-wire manufacturing methods and techniques, including soldering, wedge bonding, silver epoxy application, coefficient of expansion and thermal conductivity of materials, plating, hard and soft substrate materials, and printed circuit board manufacturing methods and techniques.
  • Ability to measure RF, thermal, and electrical characteristics of RF power amplifiers, including linearity, power, efficiency, noise figure, and thermal scans.
  • Ability to review data and identify when it may be erroneous.
  • Hands-on experience with RF test equipment, including spectrum and network analyzers, oscilloscopes, power meters, signal generators, and power supplies.
  • Experience using thermal chambers and environmental test equipment.
  • Hands-on ability to assemble, tune, test, and troubleshoot hardware in a laboratory environment.
  • Experience or coursework in microwave and millimeter-wave hardware design, including electrical, mechanical, thermal, and test environments.
  • Theoretical and basic practical knowledge of MMIC, LTCC, and ferrite core and wire products, including couplers, dividers, baluns, transformers, mixers, and amplifiers.
  • Familiarity with semiconductor probe testing.
  • Ability to comply with, understand, and support corporate safety initiatives to ensure a safe work environment.
  • Ability and willingness to abide by the Company's Code of Conduct.
Responsibilities
  • Test products in accordance with semiconductor standards and specifications.
  • Troubleshoot issues and record verified, accurate test data.
  • Provide engineering support to test, characterize, and qualify products.
  • Participate in production-run readiness reviews and support training of production personnel.
  • Participate in final design review meetings for all catalog and customer-special products.
  • Collaborate with project managers to support the release of catalog product quotas and customer-special products.
  • Provide meaningful bench data to ensure all elements of applicable product specifications and requirements are tested and verified.
  • Provide test strategies and implementation plans for relevant products, including power amplifiers, low-noise amplifiers, mixers, and passive components such as baluns and power splitters.
  • Assist in transitioning design prototypes efficiently and cost-effectively from engineering to production.
  • Analyze and recommend improvements to production processes and methods to reduce costs and improve quality.
  • Prepare new test procedures and generate block diagrams for existing and new test procedures.
  • Ensure compliance with the Phase Gated Process, Engineering Change Order and release processes for test systems and software.
Desired Qualifications
  • Related coursework in amplifier circuit design for low-noise and power amplifiers.
  • Related coursework in filter and network analysis and synthesis techniques.
  • Related coursework in electromagnetic theory.
  • Related coursework in system analysis.
  • Related coursework in digital communication and modulation techniques.
  • Related coursework in S-parameter-based network analysis.
  • Related coursework in Python coding.

About the company

Mini-Circuits designs, manufactures, and distributes RF, intermediate-frequency (IF), and microwave components and integrated assemblies. It serves commercial, industrial, space, and military sectors with a catalog of over 27 product lines and more than 10,000 active models, ranging from surface-mount to connectorized formats. The company operates with vertical integration, controlling design through shipment, which enables strict quality control and rapid delivery of off-the-shelf products. It also offers custom-designed solutions and has recently qualified automotive-grade components, signaling a push into high-growth markets. The goal is to be a reliable, diversified supplier by meeting exact customer requirements with ready-to-ship parts while expanding into new applications and industries.

Company Size

201-500

Company Stage

N/A

Total Funding

N/A

Headquarters

null

Founded

1969

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Simplify Jobs

Simplify's Take

What believers are saying

  • September 28, 2026 Mini-Bench expands Mini-Circuits from components into sticky test software.
  • August 2026 Bioz partnership targets quantum-computing buyers and strengthens sales enablement.
  • September 2026 GaN-on-SiC amplifiers and October 2026 EMS setup support aerospace and satcom growth.

What critics are saying

  • Qorvo, Skyworks, and Analog Devices compress margins in 2027 with integrated RF platforms.
  • Mini-Bench and new GaN MMICs must win designs before incumbents standardize competing stacks.
  • Private-company opacity hides demand, workforce, and margin stress; a bad 2027 cycle crushes scale.

What makes Mini-Circuits unique

  • Mini-Circuits ships 10,000-plus stocked RF models from vertically integrated U.S. operations.
  • Its September 2026 Mini-Bench platform unifies sensors, visualization, and analysis across operating systems.
  • Bioz Badges and a Quantum Computing Hub tie products to peer-reviewed validation.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Disability Insurance
  • Life Insurance
  • Wellness Program
  • Commuter Benefits
  • Paid Vacation

Company News

RF Design
Oct 15th, 2026
Mini-Circuits new model alert - Breaking Bandwidth Barriers with LTCC balun technology.

Mini-Circuits new model alert - Breaking Bandwidth Barriers with LTCC balun technology. 9 to 27 GHz Breaking Bandwidth Barriers New uCeramIQ Balun Delivers 3:1 Bandwidth Ratio in 0805 Footprint Mini-Circuits continues to expand the capabilities of its proprietary μCeramIQ(TM) technology with the introduction of the NCS2-2702+, an ultra-wideband balun covering 9 to 27 GHz in a compact 0805 package. Combining exceptional bandwidth with the compact size, manufacturing consistency, and reliability of monolithic LTCC construction, this innovative design gives RF engineers new flexibility to optimize size, performance, and cost without traditional tradeoffs. The NCS2-2702+ represents another breakthrough in Mini-Circuits' expanding portfolio of advanced ceramic components, bringing unprecedented capabilities to commercial RF and microwave system designers. Key Features: * Ultra-wideband 9 to 27 GHz coverage * Low insertion loss performance * Excellent amplitude and phase balance * Patent-pending μCeramIQ(TM) LTCC technology * Compact 0805 footprint (2.0mm x 1.25mm) Get in touch for orders or any queries: [email protected] / +27 21 555 8400

RF Design
Oct 7th, 2026
Mini-Circuits introduces Butler matrices for repeatable 5G and Wi-Fi MIMO testing.

Mini-Circuits introduces Butler matrices for repeatable 5G and Wi-Fi MIMO testing. Mini-Circuits has released a family of high-performance Butler matrices, designed to help engineers reproduce controlled RF phase relationships and multipath propagation conditions in laboratory and production test environments. Covering key Wi-Fi and 5G FR1 frequency bands, the five models provide bidirectional signal transfer between all inputs and outputs while maintaining controlled phase relationships, amplitude balance, and insertion loss across their operating bands. The Butler matrix architecture is particularly useful for antenna beamforming development and evaluation of MIMO transmitters and receivers. By providing multiple precisely related RF signal paths, the matrices allow engineers to emulate multipath conditions that normally occur during over-the-air transmission without requiring an OTA environment. Every unit is 100% tested for highly repeatable performance. The portfolio includes two 4 x 4 models and three 8 x 8 models, all with SMA connectors: * ZBLR-4X4-0672 - 4 inputs and 4 outputs covering 600 to 7250 MHz, with 7 dB typical loss and a 45° phase increment between adjacent outputs. * ZBLR-4X4E - 4 x 4 configuration covering 2000 to 8000 MHz, with 7 dB typical loss and a 45° phase increment. * ZBLR-8X8-0650 - 8 inputs and 8 outputs covering 600 to 5000 MHz, with 12 dB typical loss and a 22.5° phase increment. * ZBLR-8X8E - 8 x 8 configuration covering 2400 to 7200 MHz, with 10 dB typical loss and a 22.5° phase increment. * ZBLR-8X8-0672 - 8 x 8 configuration covering 600 to 7250 MHz, with 10 dB typical loss and a 22.5° phase increment. Designed for Controlled Phase and Amplitude Performance A key characteristic of the Butler matrix is its defined phase progression between adjacent outputs. The 4 x 4 models provide a 45° phase offset, while the 8 x 8 models provide a 22.5° offset. These phase relationships enable controlled excitation of multiple antenna paths, making the devices suitable for beamforming and MIMO test applications. The product design uses high-performance passive components and custom phase-matched cables to maintain phase and amplitude performance across the specified frequency bands. This approach provides low amplitude unbalance and controlled loss across the operating range, with every unit subjected to 100% testing. For applications requiring programmable path loss in addition to phase-controlled signal distribution, Mini-Circuits also offers multi-channel attenuators that can be used with Butler and other n x m matrices. These attenuators support individually controlled attenuation, fading, sweep and hop sequences, with USB and Ethernet control and automation capabilities through Python, LabVIEW and other programming environments. Get in touch for orders or any queries: [email protected] / +27 21 555 8400

Engineers Garage
Oct 7th, 2026
Mini-Circuits releases Butler matrices for MIMO testing.

Mini-Circuits releases Butler matrices for MIMO testing. Mini-Circuits has released a family of 4 x 4 and 8 x 8 Butler matrices for Wi-Fi and 5G FR1 antenna beamforming and MIMO test applications. The bidirectional matrices cover frequencies from 600 MHz to 8 GHz, with 4 x 4 models providing 45-degree phase increments and 8 x 8 models providing 22.5-degree increments. SMA connectors and 100% testing support repeatable signal distribution for laboratory and production environments where engineers need to emulate multipath conditions without over-the-air testing.

RF Design
Sep 30th, 2026
Mini-Circuits introduces Mini-Bench(TM) RF measurement platform for streamlined power sensor testing.

Mini-Circuits introduces Mini-Bench(TM) RF measurement platform for streamlined power sensor testing. Mini-Circuits will introduce Mini-Bench(TM), a new RF test and measurement software platform designed to simplify instrument setup, improve workflow efficiency and provide engineers with enhanced tools for measurement visualization and analysis at the European Microwave Week 2026, October 6-8 at ExCeL London in Booth A40A. Mini-Bench provides a modern, intuitive user interface for Mini-Circuits' PWR-Series high-performance power sensors. The platform lets users control multiple USB- and Ethernet-connected instruments from a single interface while speeding up setup and configuration. Built on customer feedback and real-world application requirements, Mini-Bench streamlines common measurement tasks while maintaining access to advanced test capabilities. The software supports Windows, macOS, and Linux systems. Advanced Measurement and Analysis Tools Mini-Bench gives engineers and technicians a flexible environment to configure measurements and analyze RF signals. Customizable measurement displays allow users to organize information for specific test requirements, while graphical tools provide greater visibility into device and system performance. Measurement capabilities include graphical power trend plots, pulse and modulation profile traces, dual profile traces for high-resolution analysis, measurement averaging, offset and relative measurements, and markers with delta-marker calculations. Users can also export measurement data and graph traces and schedule recordings for longer-term testing and analysis. A simulated sensor capability enables users to evaluate the software and become familiar with its operation before connecting hardware. The Mini-Bench interface can display multiple sensor measurements simultaneously while providing detailed graphical views of pulse and modulation characteristics. Instrument status, measurement values, configuration controls, and graphical analysis are brought together in a single workspace, helping users move efficiently from setup through measurement and analysis. Designed for Mini-Circuits' PWR-Series Power Sensors Mini-Bench complements Mini-Circuits' expanding family of PWR-Series RF and microwave power sensors. The product family includes sensors covering frequencies up to 40 GHz and supports measurements from CW and single-tone signals to pulsed signals and modern digital modulation formats. Simplifying the RF Test Workflow By combining instrument control, measurement configuration, visualization and data analysis in one platform, Mini-Bench helps reduce the time engineers spend configuring test equipment and managing separate measurement workflows. Its intuitive navigation makes the platform accessible to new users while providing the measurement and analysis functionality experienced RF test engineers require. Mini-Bench software, supporting documentation and information on compatible PWR-Series power sensors are available on the Mini-Circuits website. Get in touch for orders or any queries: [email protected] / +27 21 555 8400

RF Design
Aug 27th, 2026
Mini-Circuits new model alert: 7/16 DIN Adapters.

Mini-Circuits new model alert: 7/16 DIN Adapters. DC to 6 GHz, 7/16 DIN Adapters, Low Insertion Loss & Excellent VSWR Mini-Circuits' new series of 7/16 DIN adapters support a wide range of applications from DC to 6 GHz. They provide excellent VSWR and low insertion loss over the frequency band. They feature passivated stainless steel construction with gold-plated beryllium copper center pins. These 7/16 DIN connectors are best suited for high-power, multi-transmitter RF systems in aerospace/defense, outdoor telecom, broadcast, and industrial environments where durability and reliability are critical. Key Features: * Ultra-Wideband, DC to 6 GHz * Low Insertion Loss, Down to .02 dB at 6 GHz * Excellent VSWR, Down to 1.05 at 6 GHz * DIN-DIN & DIN-N-Type Options * Straight & Right Angle Get in touch for orders or any queries: [email protected] / +27 21 555 8400