Array-fed reflector antenna device and method of controlling this device

摘要

Beam direction controlling unit includes a relative position determining unit that determines a relative position between a reflector antenna and an array antenna by controlling a driver, e.g., driving unit, a drive controlling unit, such that a range on the array antenna onto which a parallel light beam from a desired beam direction is projected is a range in which element antennas are arranged, an excitation element selector that selects, as element antennas to be excited, element antennas onto which the parallel light beam is projected at the determined relative position, an excitation amplitude phase determining unit that sets an excitation amplitude phase of the selected element antennas, and sets the excitation amplitude phase to an excitation amplitude phase controller, e.g., an amplitude controller, a phase shifter, and an excitation amplitude phase controlling unit, and a transmitter/receiver connecting unit that connects the selected element antennas to a transmitter/receiver.

主权项

1. An array-fed reflector antenna device comprising:
a reflector antenna; an array antenna that is comprised of element antennas which are arranged in a two-dimensional array as a primary radiator of said reflector antenna; an excitation amplitude phase controller that is connected to each of said element antennas and adjusts an excitation amplitude phase of said each of said element antennas; a driver that changes a relative positional relationship between said reflector antenna and said array antenna; anda beam direction controller that controls a beam direction of said reflector antenna by controlling said excitation amplitude phase controller and said driver, wherein
said beam direction controller includes: a relative position determinator that determines a relative position between said reflector antenna and said array antenna by controlling said driver in such a way that a range on said array antenna onto which a light beam from a desired beam direction is reflected by said reflector antenna and is then projected is a range in which said element antennas are arranged; an excitation element selector that selects, as element antennas to be excited, said element antennas onto which said light beam is projected at the relative position between said reflector antenna and said array antenna which is determined by said relative position determinator; an excitation amplitude phase determinator that determines an excitation amplitude phase value of the element antennas selected by said excitation element selector and sets the excitation amplitude phase value to said excitation amplitude phase controller; and a transmitter/receiver connector that connects the element antennas selected by said excitation element selector to a transmitter/receiver.