Basic Rules for Indoor Anechoic Chamber Design [Measurements Corner]

Every year, many requests for proposals for an anechoic chamber are generated by companies and institutions that perform antenna measurements. The task of adequately specifying performance for an indoor anechoic chamber without driving unnecessary costs or specifying contradictory requirements requires insight that is not always available to the author of the specification. Although there are some articles and books that address anechoic chamber design [1]-[3], a concise compendium of reference information and rules of thumb on the subject of specifying ranges would be useful.