Patent ID: 6028563
Filing Date: 2000-02-22
Classification: H01Q

Abstract:
A dual polarization antenna (20, 80, 150, 200, 300, 400, 500) for transmitting or receiving polarized radio frequency signals, comprising:a reflector plate (22, 152, 202, 302, 402) that is a ground plane and that reflects the polarized radio frequency signals;one or more bow tie assemblies (24; 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104; 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176; 204, 206, 208, 210, 212, 214, 216, 218, 220, 222, 224, 226; 304, 306, 308, 310, 312, 314, 316, 318, 320, 322, 324, 326; 404, 406, 408, 410, 412, 414, 416, 418, 420, 422, 424, 426; 500), each having two cross bow tie dipoles (26, 28) with radiating arms (40, 42; 60, 62) for transmitting or receiving the polarized radio frequency signals at two polarizations, each cross bow tie dipoles (26, 28) also having U-shaped air-filled transmission feedline means (30, 32, 34; 50, 52, 54) for supporting respective radiating arms (40, 42; 60, 62) and for providing the polarized radio frequency signals between the reflector plate (22, 152, 202, 302, 402) and said respective radiating arms (40, 42; 60, 62).