Argo Semiconductors, based in Athens, is a fabless chip company designing radio-frequency (RF) front-end modules and an "active antenna catalyst" that combine radio chips and antennas for 5G base stations in the sub-6 GHz bands. It is led by chief executive Manolis Frantzeskakis, who previously founded Hermes Technologies, which demonstrated Wi-Fi beamforming in 2003, merged with Athena Semiconductors and was acquired by Broadcom in 2005, according to Argo Semiconductors. Its EIC Accelerator project receives an EU contribution of €2,486,874 and runs from December 2024 to November 2026, according to CORDIS. Argo said the award was blended finance and would fund highly integrated RF front-end modules for the 5G N78 and N79 bands, according to Argo Semiconductors.
The project's first report says Argo optimised RF circuits and antennas and developed a second-generation active antenna catalyst that replaces several discrete modules, and it claims the architecture is more compact, energy-efficient and cost-effective than current 5G and pre-6G solutions, according to CORDIS. Argo has not announced customers, orders, production chips or funding beyond the EIC. Its news page has had no update since the project's start in January 2025.
Company file
- Legal entity
- Argo Imiagogoi AE (Argo Semiconductors SA), Athens
- CEO
- Dr. Manolis Frantzeskakis
- CTO
- Dr. Georgios Sfikas
- Product
- RF front-end modules and active antenna catalyst
- Bands
- 5G N78 and N79, sub-6 GHz
- Model
- Fabless chip design
- EIC funding
- Blended finance, €2.49M grant
Where Argo Stands Now
Argo's leadership team includes engineers who worked at Broadcom and Lucent; it says half its staff hold PhDs and team members hold more than 50 patents. It has taken part in the EU-funded FirstTo6G research project. Its accounts, headcount and investors, other than the EIC, were not accessible in free sources.
"The official initiation of our EIC supported Active Antenna project marks a significant milestone for ArgoSemi."
Dr. Manolis Frantzeskakis, CEO, January 2025The Technology: Folding a Radio Into One Module
Argo's catalyst replaces several discrete modules in a 5G radio with a single integrated one, which it says reduces size, power use and cost, and supports flexible, modular designs for operators rolling out standalone 5G and preparing for 6G. The company designs the chips and has them made by foundries.
What the EIC Award Promised, and What the Record Shows
The project promised to finalise and optimise the active antenna catalyst to revolutionise sub-6 GHz 5G. It runs until November 2026, so it is too early to judge it. The first-year report shows design progress; it does not report silicon tested with customers or a production contract.
- Gen-2 catalystDevelopedFirst-year report.
- IP strategyDevelopedProject report.
- Customer validationUnverifiedNone announced.
- Commercial productionUnverifiedNot reported.
The Money
The award was blended finance, but the size of any EIC Fund investment has not been published, and Argo has disclosed no other funding. Greek company accounts were not accessible in free sources.
What Cannot Be Checked
Questions for the EIC
Whether the EIC Fund invested, whether Argo's chips have been tested by base station makers, what the company earns and how many people it employs are not public.
Why Europe Should Care
The CORDIS report presents Argo's work as a step towards a European-designed RF chip and compact radio architecture. The evidence that operators or equipment makers will buy it is not yet public.
What the award promised
A finalised active antenna catalyst to transform sub-6 GHz 5G radios.
What the record shows
A second-generation design and no announced customers.
The Verdict
Engineering progress, market unknown
Argo has an experienced team and a new design. Buyers for it have yet to appear in public.
Argo Semiconductors and the EIC have not been asked for comment for this article. It is based entirely on public records and published statements, linked throughout.
