Proven MMW Experience 



Proven MMW Experience for High-Reliability Applications

If your high-reliability application demands proven MMW experience, look no further. QuinStar Technology, Inc. designs and manufactures millimeter-wave products for communication, scientific, and test applications. We excel in millimeter-wave products, microelectronic assembly, rapid prototyping, and mass customization. As a result, we serve both established and emerging markets with system applications in the commercial, scientific, and defense arenas. QuinStar is AS9100:2009 Rev C / ISO 9001:2008 certified.

Capitalizing on our past engineering achievements, QuinStar leads the way into the future.

About QuinStar: Who We Are

At QuinStar, we know that good decision making depends on good information. We see ourselves as an essential part of the global effort to provide real-time, critical information for the decisions that advance humankind.

Vision: A world more connected with real-time, critical information.

We see a world of unlimited potential when real-time and critical information is readily available for decision making. Our work supports transformative technologies including autonomous vehicles, satellite communications, environmental sensing, quantum computing development, and the ever-expanding Internet of Things.

Mission: Engineering SMART millimeter-wave and RF solutions.

QuinStar exists to develop, manufacture, and deliver millimeter-wave and RF solutions. From high-level R&D efforts to requirements-driven program innovation to readily available catalog components, QuinStar is here to meet the exacting needs of our customers.

Core Values: Work SMART. Live SMART.

QuinStar’s core values are at the heart of our proven MMW experience. In a word, QuinStar’s core values are SMART. We encourage our employees to Work SMART and Live SMART.






As individuals and as a company, our ability to achieve our mission hinges on the strength of our core values. At QuinStar, we are aware of our strengths and our challenges. We value the pursuit of mastery—from engineering to accounting to machining—we continuously strive to improve. We are accountable for our successes and for our failures; we learn and grow for both. We are a diverse company functioning in a global economy; respect binds us together. Finally, we value the spirit of tenacity, which we define as our solution-driven work ethic.

About QuinStar: What We Do

QuinStar products include standard catalog components; specialized high-performance active and passive components; and fully integrated and customized assemblies and subsystems.

QuinStar customers span the globe. Our RF and MMW experience includes working with all major research institutes, high-reliability spaceflight payloads, and volume production of military hardware.

Proven MMW Experience for the Future

In 2018, QuinStar celebrates its 25th anniversary. We will continue our ongoing effort to grow our business in anticipation of our customers’ emerging needs.

Strategic Growth Delivers Value to Our Customers.

QuinStar systematically targets business acquisitions to enhance our proven MMW experience.

QuinStar was founded in March 1993 by seasoned aerospace engineering managers. Subsequently, we have grown our business by serving customers in the millimeter-wave and microwave sensing and communication fields. To achieve our Mission, we are strategically increasing our footprint in the industry. We acquire businesses that further strengthen and expand our vertically integrated business model.

Our first acquisition was of DCL Inc., a local electronic engineering firm, in 1996.

In 1997, we purchased the assets of CERNEX Inc., a microwave amplifiers company in Sunnyvale, CA. Initially, we continued operations as QuinStar Technology, Sunnyvale Division. Then, in 2000, we moved this division to our Torrance location.

Later, QuinStar began manufacturing Silicon IMPATT diodes. Hughes Aircraft Company developed the technology for satellite communications and missile seekers in the mid-70s to 80s. It was later acquired by Raytheon. QuinStar acquired the manufacturing rights and all equipment and inventory of the Silicon IMPATT diode product line from Raytheon in 1998. This is the basis of our IMPATT amplifier, oscillator, and noise-source business. Today, QuinStar is the only commercial Silicon IMPATT diodes manufacturer in America.

In 2002, we purchased all assets of Millimeter Products, Inc. (MPI). MPI was a millimeter-wave components company in New Hampshire. We moved the company to our Torrance facility in 2003. Significantly, this purchase expanded our waveguide and test component product lines. These lines are similar to the Alpha/TRG product line.

Further Expanding Our Reach with Cryogenic Products.

We expanded into the cryogenic amplifier business in 2004 with the acquisition of Berkshire Technologies, Inc. This acquisition further supports our scientific research customers.

In addition, QuinStar acquired PAMTECH’s assets and continued company operations. In April 2010, we moved PAMTECH’s operation to our Torrance location. We continue to develop innovative and superior passive microwave products.

As a result, these acquisitions provide us with the unique ability to offer premium cryogenic circulators and isolators to advance quantum computing research.

Growing Our Capacity.

Most recently, QuinStar began an expansion and facility upgrade. The expansion aligns our operations with our Vision. Altogether, QuinStar’s facilities now total 65,000 sq. ft. of workspace spanning two buildings.

In the meantime, to enhance our technical capacity, we have been significantly upgrading our near-field antenna range, environmental test facility, and machining capabilities. As an illustration, our latest equipment upgrades include two wafer-probe stations and an automated inspection microscope. One wafer-probe station tests MMICs over the frequency range of 7 KHz to 145 GHz in one sweep. The second wafer-probe station has a temperature-controlled chuck, which allows us to make chip-level power measurements at V/W-band frequencies. The automated inspection microscope with CMM enables 3D measurement on complex geometrics.

QuinStar’s commitment to ongoing upgrades supports our pursuit of engineering SMART millimeter-wave and RF solutions.


In summary, QuinStar is a company rich with proven MMW experience. We continue to strengthen our Core Values to advance our Mission and Vision, while strategically adding breadth and depth to our expertise and onsite capabilities.

Company Information

Manufacturing Capabilities

With comprehensive design and manufacturing equipment and facilities on site, QuinStar develops and produces customized assemblies and subsystems from any starting point in your application development cycle and based on any degree of specification.

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Employment Opportunities

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ISO9001:2008 and AS9100 Certification

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Supplier Quality Flow Downs

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Frequently Asked Questions

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