TWO-DIPOLE ANTENNA

PURPOSE: To provide a two-dipole panel antenna which is equipped with simple structure and can change a matching frequency with a simple operation. CONSTITUTION: The parts of the roots of both V-shaped arms 1a and 1b, which can be strentched at a fixed opening angle, are fixed on a reflection panel 2 and two stretchable dipole elements 3a and 3b are respectively parallelly fitted to both the arms 1a and 1b. Then, two parallelly fitted dipole elements 3a and 3b are connected by parallel lead wires so that their phases can be opposite each other, and one end of the parallel lead wires is defined as a feeding point. Thus, only by stretching the dipole elements 3a and 3b and both the V-shaped arms 1a and 1b and segmenting and connecting one of parallel lead wire of a 1/2 wavelength, a prescribed frequency can be matched and an adjusting operation is simplified.