Diamond Microwave Chambers Ltd, known as DMC, is a prominent manufacturer and supplier of RF and microwave solutions based in Ottawa, Ontario, Canada. The company specializes in custom RF solutions, including RF shield rooms, high-performance absorbers, enclosures, and antenna measurement systems. DMC is recognized for its expertise in electromagnetic compatibility (EMC) testing and RF shielding.

DMC provides a range of services, including turn-key solutions that integrate with major test system suppliers and end-to-end project management to ensure high engineering standards. The company adheres to OSHA and international safety standards to protect its installers and technicians. Its product offerings include EMC and antenna anechoic chambers, RF shielded rooms and cabinets, and various RF/microwave/mmWave absorbers.

DMC collaborates with notable industry clients such as Qualcomm, Lockheed Martin, and Activision, and partners with companies like Keysight and Anritsu to enhance its testing capabilities.