Sierra Microwave Technology was founded in 1985 in Sacramento, California. The company, from the beginning, developed a reputation for producing high reliable parts for the military and space industries. Very wide frequency bands and low loss performance were what set Sierra apart from its competitors.
In 1991, Sierra relocated to Georgetown, Texas to take advantage of the lower operating cost in that region. Sierra spun off its amplifier group prior to moving to Texas. This allowed a concentration on the product lines which had always formed the core of Sierra’s business: Isolators, Circulators, Equalizers, Filters, and Pin-Diode Switches.