Multifold frequency converter

The utility model discloses a multifold frequency converter. The multifold frequency converter comprises an upper cover and a lower cover. The lower bottom surface of the upper cover is provided with an upper accommodating cavity. The upper bottom surface of the lower cover is provided with a lower accommodating cavity. The upper accommodating cavity is provided with an upper diode. The lower accommodating cavity is provided with a lower diode. The upper diode and the lower diode are arranged in a staggered manner. The upper diode comprises a first shell, a second shell, and a pin wire. The first shell and the second shell are connected through the pin wire. The first and second shells are both internally provided with cat whiskers, and each cat whisker is connected with a storage piece. The storage piece in the first shell is connected with the cat whisker in the second shell through the pin wire. The pin wire exposed out of the second shell is provided with a sharp part used for plugging into a corresponding line. By employing a special-shaped diode mode, the space of the frequency converter is fully utilized; the transmission loss is greatly reduced; and the amplitude and phase of a waveguide are enabled to have high consistency.