RADAR ANTENNA

摘要

The main body of this antenna is so structured that a narrow fan beam is reflected obliquely by a subreflector (3) which receives radio waves from the point (f2) of a horn (7) transmits them to the points (f2), and is further reflected by a main reflector (5), so that the beam is directed in a horizontal direction. The main reflector (5), the subreflector (3), and the horn (7) are arranged rotatively by rotating means (23, 24, and 25) around the vertical axis (8) which passes the point (f2). The main body is thus simply structured, so that it can be fabricated at a low cost. Also, in order to simplify the structure of a power supply unit for the main body, the unit is made up, a lid (30), and a housing (28). The lid (30) supports the main body (1) and rotates the rotating means (24 and 25) for rotating the main body (1), and a wave guide (26) connected to the horn (7). There are installed in the housing (28), a transmitting pulse oscillator (31), a frequency converter (37) connected to the wave guide (26), and a circuit board (36) on which are provided a modulating circuit (37) for the transmitting pulse oscillator (31), and an intermediate frequency converting circuit (38) for the frequency converter (33).