Patent ID: 9525212
Filing Date: 2016-12-20
CPC Classification: H01P,H01Q

Claim Text:
1. A feeding network, wherein the feeding network is disposed on a printed circuit board (PCB), wherein the PCB comprises: a positive 45-degree polarized port, a negative 45-degree polarized port, a first positive 45-degree polarized output port, a second positive 45-degree polarized output port, a first negative 45-degree polarized output port, and a second negative 45-degree polarized output port; and the feeding network comprises: a first feeding subnetwork and a second feeding subnetwork, wherein the first feeding subnetwork comprises: a first balun device, a first microstrip, and a second microstrip, wherein an input end of the first balun device is connected to the positive 45-degree polarized port, the first microstrip is connected between a first output end of the first balun device and the first positive 45-degree polarized output port, and the second microstrip is connected between a second output end of the first balun device and the second positive 45-degree polarized output port; and the first microstrip and the second microstrip have an equal electrical length and an equal characteristic impedance value, which results in an equal amplitude and a 180-degree phase difference of signals at the first positive 45-degree polarized output port and the second positive 45-degree polarized output port; and the second feeding subnetwork comprises: a second balun device, a third microstrip, and a fourth microstrip, wherein an input end of the second balun device is connected to the negative 45-degree polarized port, the third microstrip is connected between a first output end of the second balun device and the first negative 45-degree polarized output port, and the fourth microstrip is connected between a second output end of the second balun device and the second negative 45-degree polarized output port; and the third microstrip and the fourth microstrip have an equal electrical length and an equal characteristic impedance value, which results in an equal amplitude and a 180-degree phase difference of signals at the first negative 45-degree polarized output port and the second negative 45-degree polarized output port.