Canada was strategically placed at the end of World War II (WWII). There was a significant core of engineering design expertise, not only in the traditional resource and power industries, but also in the rapidly advancing electronics area, particularly the telecommunications sector. This capability was significantly improved with the arrival of many well-trained engineers and technologists from abroad who were escaping repressive regimes or simply looking for opportunity in the new world. We follow the development of microwave components and systems in Canada from an engineering perspective, highlighting the key programs, evolution of key technologies and research activities in the field of microwave theory and practice.