Differential mode coupler of circular seam feed structure

• Main Authors: LI ZHENSHENG, SONG CHANGHONG, YANG FAN, NIU MAOGANG
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

The invention discloses a differential mode coupler of a circular seam feed structure, which belongs to the technical field of satellite communication, is an annular structure surrounding a signal feed source and is used for realizing good electromagnetic compatibility with the signal feed source. Comprising an annular feed source, the annular feed source is mainly composed of an inner circumferential wall and an outer circumferential wall, and the central axis of the inner circumferential wall and the central axis of the outer circumferential wall coincide to form an annular cavity; the bottom of the annular cavity is a metal ground; the metal ground is provided with a radiation circular seam, and the central axis of the radiation circular seam coincides with the central axis of the signal feed source. The lower surface of the metal ground is provided with a six-layer microwave dielectric plate, and the lower surface of the six-layer microwave dielectric plate is provided with an annular metal cavity. The wo