Multi-Channels Controllable Phase Signal Getnerator

Over-the-horizon radar's beam-frequency is high frequency band and its wavelength is so long that the annate's characters are very complicated when applicated on the ship. The character of coupling between cells and the environment must be measured to compensate in the radar signal process step. The ship-based over-the-horizon radar uses CFA(Crossed Field Antenna ) as array antennas'cell. Because of its special antenna structure, testing the antenna's performance is necessary to prove its theory.Auto measurement system of CFA array annates can measure the annates's amplitude-phase character and resistance matrix quickly and effectively. Multi-channels controllable phase signal generator is one of the key devices. Multi-channels controllable phase signal generator adopts DDS technology.Its digital structure makes the device small and automatic. DDS technology is used widely in the field of signal frequency synthesization. It has the characters of high frequency resolving power, high-speed frequency switch.Multi-channels controllable phase signal generator designes around the DDS and BUS integrate circuits. In this article, we use AD9852 as the DDS signal generator core and CY7c68013 as the USB bus device. All the devices adopt blocking structure, can update and maintain comfortably.An excellent software is essential to exert the performance of the hardware flat roof. In this article we discuss the CY7c68013's firmware and Windows NT environment driver program in detail.