The Model 3145BDP Dual-Polarized Log-Periodic Dipole Array (LPDA) is a dual linearly polarized, broadband log antenna designed to operate over the frequency range of 100 MHz to 1.1 GHz. The various diameters of each element along with the center-to-center spacing of the booms result in excellent VSWR characteristics throughout the operating frequency range. The precise design of the feed and positioning of the elements on the boom yields optimum phase relationship. This causes the active region, at any given frequency, to propagate RF energy towards the smaller elements, leaving the elements behind it inactive and operating as reflectors to improve the gain.

Manufactured of rugged stainless steel, the model 3145BDP is designed for prolonged outdoor use and harsh operating environments. Calibrated at 10 m per ANSI C63.5, the model 3145BDP has actual Antenna Factors and a signed Certificate of Conformance included with the antenna.