Patent ID: 11923620
Assignee: CHANGSHA CHIXIN SEMICONDUCTOR TECH CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A compact ceramic chip antenna array based on ultra-wide band three-dimensional direction finding, comprising a dielectric substrate, a metal floor and a coplanar waveguide feeder, wherein
a first antenna unit, a second antenna unit and a third antenna unit are arranged on a front side of the dielectric substrate; the first antenna unit and the third antenna unit are symmetrically arranged on both sides of the second antenna unit, respectively;
the coplanar waveguide feeder comprises a first coplanar waveguide feeder, a second coplanar waveguide feeder and a third coplanar waveguide feeder; the first coplanar waveguide feeder, the second coplanar waveguide feeder and the third coplanar waveguide feeder are electrically connected to the first antenna unit, the second antenna unit and the third antenna unit, respectively;
a first impedance matching structure, a second impedance matching structure, a third impedance matching structure and a fourth impedance matching structure are further arranged on the front side of the dielectric substrate;
a seventh impedance matching structure, an eighth impedance matching structure, a ninth impedance matching structure, a tenth impedance matching structure and a thirteenth impedance matching structure are arranged on a back side of the dielectric substrate;
the first impedance matching structure and the second impedance matching structure respectively correspond to the seventh impedance matching structure and the eighth impedance matching structure; the third impedance matching structure and the fourth impedance matching structure respectively correspond to the ninth impedance matching structure and the tenth impedance matching structure;
wherein the first impedance matching structure and the second impedance matching structure are respectively arranged on a right side of the first antenna unit and a left side of the third antenna unit; the first impedance matching structure and the second impedance matching structure are rectangular grooves etched on the metal floor; the third impedance matching structure and the fourth impedance matching structure are arranged on an extension section of a first end of the second coplanar waveguide feeder;
a fifth impedance matching structure and a sixth impedance matching structure are further arranged on the front side of the dielectric substrate;
an eleventh impedance matching structure and a twelfth impedance matching structure are further arranged on the back side of the dielectric substrate;
the fifth impedance matching structure and sixth impedance matching structure respectively correspond to the eleventh impedance matching structure and twelfth impedance matching structure;
the fifth impedance matching structure and sixth impedance matching structure are arranged at a second end of the second coplanar waveguide feeder; the fifth impedance matching structure and the sixth impedance matching structure are rectangular metal patches; and
the first antenna unit, the second antenna unit and the third antenna unit are arranged in an equilateral triangle; a distance among each geometric center of the first antenna unit, the second antenna unit and the third antenna unit is half of a wavelength corresponding to a highest frequency point at a ninth frequency band of the ultra-wide band; and the ceramic chip antenna array structure has a width of 2.3 cm and a height of 3.4 cm.