Broadband Circularly Polarized Antenna for Susceptibility Testing
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
Circularly polarized fields are produced from crossed biconical antennas which are driven by phased signals. These circularly polarized fields are particularly useful for performing susceptibility tests upon equipment which may encounter horizontally and/or vertically polarized electromagnetic fields such as those produced by radio, television and the like. The antenna array is shown in front view in Fig. 1 and is composed of two biconical antennas. One antenna is formed of elements 10 and 11 oriented vertically, while the second is formed of elements 12 and 13 oriented in a horizontal position. Each antenna is a conventional biconical antenna, such as the AILTECH Model 94455-1, which separately generates linearly polarized signals for transmitting and receiving signals in the 30-200 MHz frequency range. As shown in Fig.