Best Semiconductors Companies in San Diego, United States

Developer of computer systems optimizing energy efficiency for artificial intelligence. The company focuses on rethinking computer foundations to manage the optimization. It combines solutions in artificial intelligence systems, analog circuits, computing theory, and neuroscience. The company aims to bring biology-scale efficiency to artificial intelligence.

Funding rounds

• Dec 2025Seed$475M

Founders & team

Sara AchourCo-FounderMichael CarbinCo-FounderNaveen RaoCo-Founder & CEO

Investors

Lightspeed Venture Partners, Andreessen Horowitz, Lux Capital, DCVC, Databricks, Future Ventures

Tech stack

Apple Icloud MailBootstrapCloudflareCloudflare Bot ManagementGoogle AnalyticsGoogle Tag Manager

Manufacturer of integrated photonics systems for quantum computing, sensing, and communication. The company provides modular platforms integrating lasers, modulators, detectors, fiber optics, and control systems. These systems enable state preparation, measurement, cooling, trapping, manipulation, and coherent control of quantum states. The company aims to accelerate development cycles for quantum technology.

Funding rounds

• Mar 2026Series C$55M
• Dec 2025Series B$21M

Founders & team

Tim DayChairman & CEOEric TakeuchiChief Commercial Officer

Investors

Serendipity Capital, 55North, Global Innovation Labs

Tech stack

Core-JsFastlyGodaddyGoogle AnalyticsGoogle Tag ManagerGravity Forms

Reinventing computing with innovative solutions for complex problems and AI. They are redefining what's possible in the computing landscape. They offer products and resources designed to break bottlenecks and solve complex problems faster. Their core focus is on developing real technology, particularly in the realm of Artificial Intelligence. They are committed to sustainability, designing chips that run cool and consume ultra-low energy, delivering peak performance efficiently. They cater to clients seeking to make better business decisions faster. Their team comprises physicists, entrepreneurs, developers, and inventors who embrace challenging the status quo. They provide innovative solutions, pushing the boundaries of computing and AI technology.

Funding rounds

• Nov 2025Series A$4.4M
• Jul 2020Seed—
• Jun 2019Seed—

Founders & team

Massimiliano Di VentraCo-FounderJohn BeaneFounder & Chief Executive Officer

Investors

EvoNexus, IT-Farm Corporation, Revolution, Free Radical Ventures, Hikari Corporation, Catalyst Accelerator

Tech stack

DrupalPhpBootstrapRecaptchaJqueryGoogle Analytics

Developer of edge artificial intelligence solutions including SoCs and AI models. The company provides systems on chip, neural processing units, and visual recognition solutions. These solutions are designed for smart vehicles, security devices, smart homes, and edge servers. The company's technology supports mainstream AI frameworks and CNN models.

Funding rounds

• Sep 2023Series B$49M
• Aug 2023Series B$14M
• Oct 2022Series B$48M
• Dec 2021Series B$25M

Founders & team

Frank ChangCo-Founder

Investors

Horizons Ventures, Delta Electronics, MTS Systems, Intema, Hon Hai, Alibaba Entrepreneurs Fund

Tech stack

Amazon Web ServicesApache Http ServerAws Certificate ManagerCart FunctionalityCloudflareCloudflare Bot Management

Innovating dry EEG sensors and psychophysiological monitoring systems for diverse applications. They are a global leader in noninvasive biosensing systems, specializing in dry sensors for high-fidelity psychophysiological monitoring without gels or sticky pads. Their advanced technology integrates precision hardware with sophisticated algorithms, outputting actionable information about cognitive and physiological states. They build psychophysiological sensing systems to spec and design algorithms that output precise, useful metrics. They offer solutions for human performance, healthcare, and commercial applications, including ambulatory cognitive state evaluation, seizure detection, and integration into wearable devices. Their expertise spans EEG, ECG, EMG, EOG, Pulse Oximetry, respiration, and inertial motion units. They provide unified data streams, eliminating integration headaches and reducing sources of error in physiological monitoring and analysis. They work with both government and commercial organizations to turn concepts into systems, offering expertise from research systems to medical devices.

Funding rounds

• Jan 2025Grant (prize money)$500K
• Jan 2025Grant (prize money)$500K
• Jul 2014Grant (prize money)$119K
• Nov 2009Grant (prize money)$147.6K

Founders & team

Walid SoussouCEO

Investors

National Science Foundation, HHS

mmWave solutions provider enabling advanced 5G, SATCOM, and defense applications. The company specializes in developing silicon integrated circuits for intelligent active array antennas, offering a portfolio of active antenna ICs. They provide solutions from ICs to arrays, catering to markets like 5G, SATCOM, and Defense & Aerospace. Their offerings include intelligent array IC solutions and algorithms to antennas, enabling mmWave systems. They focus on delivering performance, cost-effectiveness, and support, with features like high linear power, Rx sensitivity, and digital features. The company serves as a resource for innovative mmWave solutions, enabling new capabilities in various applications.

Developer of UVB light therapy devices for monitoring Psoriasis, Vitiligo, and Eczema. The company has developed a UV therapy based device that facilitates the treatment of chronic skin conditions. It uses advanced phototherapy technology that delivers a precise dose of light on the skin for treating multiple skin diseases. Its ultraviolet B (NB-UVB) light can penetrate the skin, and prevent the growth of affected skin cells for psoriasis. It also offers an integrated mobile app for the visualization of results.

Funding rounds

• Oct 2021Series B$43M
• Nov 2019Series A$2.6M
• Nov 2019Series A$18M
• Dec 2017Seed$1M

Founders & team

Lisa RCEO

Investors

EvoNexus, 7wire Ventures, SV Health Investors, Bluestem Capital, H.I.G. HealthBridge, General Catalyst

Tech stack

Amazon SesAmazon Web ServicesAosApple Icloud MailCdnjsCloudflare

Provider of semiconductor products and wireless technology solutions powering mobile communications. It specializes in creating semiconductors, software, and services related to wireless technology, addressing major industries such as manufacturing, automotive, and education. It technology breakthroughs focus on intelligent computing, enabling the development of on-device AI, high-performance computing, and low-power consumption. Its offerings range from chipsets and software development kits to cloud-based platforms, supporting the growth of various sectors, including 5G, automotive, and IoT.

Funding rounds

• Nov 2018Grant (prize money)$1.2M
• Jul 2018Conventional Debt$122.4M
• Apr 2016Grant (prize money)—
• Feb 2004Post IPO$25M

Founders & team

Franklin AntonioCo-FounderAndrew ViterbiCo-FounderIrwin JacobsCo-Founder & CEO

Investors

OVP Venture Partners, Accel, Sevin Rosen, Nokia, Europa, Oak Investment Partners

QuantalRF provides IoT-based RF receiver architectures. The wireless RF circuit leverages quantal technology to provide building automation, asset management, advanced metering, and other solutions. The company claims to deliver improvements in weak signal reception, power consumption and cost when compared with other RF architectures.

Funding rounds

• Apr 2022Series C$15M
• Dec 2020Series B$19.2M
• Aug 2014Series A$14M

Founders & team

Forrest BrownCo-Founder

Investors

Dara Capital, Metellus

Provider of cloud-based soil moisture monitoring sensor systems for agricultural farms. It designs and develops wireless soil sensor systems to measure and record soil moisture, salinity, and soil. It records data automatically, which in turn provides real-time data via a mobile application to the farmers to optimize the usage and quantity of water, pesticides, and fertilizers. It also offers alarm-setting options for top farmers as per the predefined benchmarks.

OMM Inc, is a supplier of MEMS-based optical switch array modules. OMM designed the world's first commercial MEMS-based optical matrix switches. The technology uses tiny mirrors to redirect light signals instead of traditional method of converting it to electrical signals and reconverting the redirected signals to light signals. The company supplied to over 80 telecom companies but was closed down in 2013 after the downturn in telecom industry.

Funding rounds

• Aug 2000Series C$40M
• Jun 2000Series C$75M

Founders & team

Phil ChapmanCEO

Investors

Sycamore Networks, Alcatel-Lucent, Next47, Weston Presidio, Atlas Venture, Bessemer Venture Partners

Developer of AI-driven visual media generation and next-generation media compression. The company offers neural processing for visual reconstruction and understanding. It provides solutions for digital advertising, including self-guided visual intelligence and secure data handling. The company’s technology aims to transform digital advertising by correcting flaws in standard AI image generation. It also focuses on AI-enhanced video streaming.