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API Technologies is a leading manufacturer of high performance commercial wireless and telecommunications solutions, delivering filters, signal conditioning components, and power supply sources worldwide. Through continuous innovation and manufacturing excellence, API addresses the most complex RF communication and interference mitigation challenges, enables commercial radar and SATCOM connectivity, meets wireless network coverage and capacity needs, and fulfills remote power supply and monitoring demands. API also integrates power filters with other components into cost-effective and size efficient packages.

A dedicated and reliable partner, API provides the industry renowned Inmet and Weinschel brand components and testing systems, including our Powerfilm line of surface mount components that supports high reliability communication applications up to 27 GHz.

API is now among the world leaders for state-of-the-art filter designs for the remote metering industry offering heritage and custom designs in the 400MHz and 900MHz bands.
Utilizing design expertise in cavity filter construction, suspended substrate, SAW, and other filter topologies.
On demand inventory of off-the-shelf catalog items ready for same-day shipment, or overnight delivery. Attenuators, terminations and loads, adapters, bias tees, DC blocks, gain equalizers, power splitters, phase shifters and more.
Premium quality coaxial passive and programmable RF/Microwave components and test systems including attenuation, switch, and phase shifter based programmable subsystem assemblies.
Lowpass, Highpass and Bandpass filters can be combined to form our state-of-the-art Diplexers/Duplexers, Triplexers and Multiplexers.
Attenuators, terminations, and resistors with power up to 800 Watts and frequency up to 27 GHz are available in chip and flange surface-mount packages.
API Technologies manufactures a a broad range of custom and off-the-shelf EMI filtering options to meet your design EMC requirements.
Browse our line of EMI Power Filters to find the ideal method to filter the AC or DC power entering your system to prevent radiated or conducted EMI with our line of standard power filters and custom power solutions.
A broad range of custom magnetic devices including current transformers, power inductors, chokes, air coils and custom application-specific solutions.
Inside every EMI filter is a ceramic feed-through capacitor.