Patent ID: 7162200

Claim:
A dish antenna calibration system, suitable for pointing calibration of an antenna system, at least comprising: a signal source, used to emit a first signal; an antenna, located in a fixed position, and used to receive the first signal; a first radio frequency mixer, wherein the first radio frequency mixer is electrically connected to the antenna, so that the antenna can transmit the first signal to the first radio frequency mixer; a first local oscillator, wherein the first local oscillator is electrically connected to the first radio frequency mixer and used to generate a second signal; the second signal is subsequently transmitted to the first radio frequency mixer in which the second signal is mixed with the first signal and thus a third signal is formed after the frequency is reduced; an energy detecting device, wherein the energy device is electrically connected to the first radio frequency mixer, so that the first radio frequency mixer can transmit the third signal to the energy detecting device and the power of the third signal can be measured by the energy detecting device; a personal computer, wherein the personal computer is electrically connected to the energy detecting device, so that the power of the third signal that has measured can be transmitted to the personal computer, and the measured power value can be calculated and compared by the personal computer; and a servo amplifier, wherein the servo amplifier is electrically connected to the personal computer, and after the measured power value is calculated and compared by the personal computer, the personal computer outputs an angle control signal, the angle control signal is subsequently amplified by the servo amplifier so as to continuously drive the antenna scanning until the antenna is aimed at the first signal emitted by the signal source.