Three polarization mimo antenna system

Patent metadata

Field	Value
Publication number	US-2018013209-A1
Application number	US-201715482926-A
Country	US
Kind code	A1
Filing date	Apr 10, 2017
Priority date	Jul 6, 2016
Publication date	Jan 11, 2018
Grant date	—

Abstract

An antenna system is set in a substrate. The substrate includes a first floor, a second floor, a third floor, a fourth floor, and a ground plane. The antenna system further includes at least one radiation part, including a first radiation part, a second radiation part, and a third radiation part. The antenna system further includes at least one signal feed part set in the fourth floor, configured to feed electromagnetic wave signal. The feed part comprises a first feed part, a second feed part, and a third feed part. The antenna system 10 employs simple hierarchical structure, is low cost, and occupies a little space. The antenna system also has advantages of high gain, low loss, and high stability in 2.412 GHz˜2.472 GHz frequency band.

First claim

What is claimed is:

1 . An antenna system, set in a substrate, the substrate comprising a first floor, a second floor, a third floor, a fourth floor, and a ground plane, the antenna system comprising:
at least one radiation part, configured to radiate a electromagnetic wave signal, comprising:
a first radiation part defining a square shape, and set in a first floor surface closed to the second floor
a second radiation part defining a square shape, set in a third floor surface closed to the second floor;
a third radiation part defining a annular shape, set in a second floor surface close to the first floor; and
at least one feed part, set in the fourth floor, configured to feed the electromagnetic wave signal, and the at least one feed part comprising:
a first feed part, a second feed part, and a third feed part.

2 . The antenna system of claim 1 , wherein the first floor, the second floor, the third floor and the fourth floor are set in successively and in parallel, and the antenna system further comprises:
a first interval, set between the first floor and the second floor; a second interval, set between the second floor and the third floor; the ground plane, set between the third floor and the fourth floor.

3 . The antenna system of claim 2 , wherein the first interval and the second interval are dielectric.

4 . The antenna system of claim 1 , wherein geometric centers of the first radiation part, the second radiation part and the third radiation part are located along a line.

5 . The antenna system of claim 1 , wherein the antenna system further comprises at least one slot set in the ground plane, and the at least one slot comprises a first slot, a second slot and a third slot.

6 . The antenna system of claim 5 , wherein the first slot, the second slot and the third slot define an I-shape.

7 . The antenna system of claim 5 , wherein:
the first slot is located in a first radiation part square projection in the ground plane, and the first slot is perpendicular to a first radiation part square projection diagonal, and a first slot center is located in the first radiation part square projection diagonal; the second slot is located in a second radiation part square projection in the ground plane, and the second slot is perpendicular to the first slot and a second radiation part square projection diagonal, and a second slot center is located in the second radiation part square projection diagonal; and the third slot traverses a third radiation part annular projection in the ground plane, and the third slot is located in a third radiation part annular projection diameter.

8 . The antenna system of claim 7 , wherein:
the at least one feed part define an L-shape, comprising a long end, a short end and a corner coupled to the short end and the long end;
a first feed part long end perpendicularly traverses a first slot I-shape projection central position in the fourth floor;
a second feed part long end perpendicularly traverses a second slot I-shape projection central position in the fourth floor; and a second feed part short end extends away from the first feed part; and a first feed part short end extends away from the second feed part;
a third feed part long end perpendicularly traverses a third slot I-shape projection central position in the fourth floor; and a third feed part short end extends away from a third radiation part annular projection in the fourth floor.

Assignees

• Hong Fu Jin Prec Industry (Shenzhen) Co Ltd
• Hon Hai Prec Ind Co Ltd

Inventors

• Hung Chih-Ming
• Mi Han-Ping

Classifications

• H04B7/0413

  MIMO systems · CPC title

• H04B7/10

  Polarisation diversity; Directional diversity · CPC title

• H01Q1/52

  Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) · CPC title

• H01Q21/28

  Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} · CPC title

• H01Q9/0457

  electromagnetically coupled to the feed line · CPC title