Feed network, antenna, and dual polarization antenna array feed circuit

摘要

Embodiments of the present invention disclose a feeding network, which is a first balun device of a first feeding subnetwork, connected to a positive 45 degree polarization port of a PCB, and a first microstrip To the first positive 45 degree polarization output port of the PCB using the second microstrip, connected to the second positive 45 degree polarization output port using the second microstrip, and the first positive 45 degree polarization output. A first balun device that provides equal amplitude and 180 degree phase difference of the signal at the port and the second positive 45 degree polarization output port, and a second balun device of the second feed subnetwork, Connected to a negative 45 degree polarization port, connected to the first negative 45 degree polarization output port of the PCB using a third microstrip, and second negative 45 using a fourth microstrip. A second balun device connected to the polarization output port and providing an equal amplitude of the signal and a phase difference of 180 degrees at the first negative 45 degree polarization output port and the second negative 45 degree polarization output port; including. Embodiments of the present invention further provide an antenna and a dual polarization antenna array feed circuit. The power supply network in embodiments has a relatively small size and can cover multiple frequency bands.