VARIABLE LENGTH WHIP ANTENNA

摘要

PURPOSE:To change simply the total length by forming a center conductor into a hollow shape and containing removably a telescopic radiating element into the inside. CONSTITUTION:The center conductor 2 is formed into a hollow shape and a telescopic radiating element (telescopic element) 4 having a length of lambda/2 is contained removably in the inside. The antenna gain is doubled by having only to extract the telescopic element 4 through the constitution above. The performance of an antenna 6 only is obtained by having only to push the telescopic element 4 into the center conductor 2 when no double gain is required and the handling is very simple.