Patent ID: 11862868
Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A multi-feed antenna, comprising:
a first conductor layer;
a second conductor layer, having a first center position, wherein the second conductor layer is spaced apart from the first conductor layer at a first interval;
four supporting conductor structures, all located between the first conductor layer and the second conductor layer and respectively electrically connecting the first conductor layer and the second conductor layer, wherein the four supporting conductor structures form four electrically connected sections at the second conductor layer, and the four electrically connected sections respectively extend from different side edges of the second conductor layer toward the first center position, so that the second conductor layer forms four mutually connected radiating conductor plates; and
four feeding conductor lines, all located between the first conductor layer and the second conductor layer, wherein the four feeding conductor lines and the four supporting conductor structures form an interleaved annular arrangement, wherein each of the feeding conductor lines has one end electrically connected to an electrical connection point of a coupling conductor plate, each of the coupling conductor plates is spaced apart from a different one of the radiating conductor plates at a coupling interval, and each of the feeding conductor lines has another end electrically connected to a signal source respectively, wherein the four feeding conductor lines excite the second conductor layer to generate at least four resonant modes, and the at least four resonant modes cover at least one identical first communication band,
wherein the four supporting conductor structures form four different resonant spaces in a region between the first conductor layer and the second conductor layer, and the four feeding conductor lines are located in different ones of the resonant spaces, respectively,
wherein the gap of the coupling interval is between 0.005 wavelength and 0.088 wavelength of a lowest operating frequency of the first communication band.