3H Communication Systems
RF and microwave filter manufacturer for military, commercial, and satellite applications
3H Communication Systems, founded in 2014 and based in Irvine, California, designs and manufactures RF and microwave filter products covering DC to 50 GHz. Its product range spans ceramic, cavity, lumped component, and printed filter topologies, along with duplexers, diplexers, multiplexers, switched filter banks, and multi-function assemblies. Products are available in connectorized, SMT, pin, and leadless packages, with high-power variants handling up to 30 kW PEP and low-PIM versions built for wireless infrastructure, distributed antenna systems, and satellite use. The company serves both military and commercial customers and holds AS9100 and ISO 9001:2015 certifications.