Antenna module and mobile terminal using same

Patent metadata

Field	Value
Publication number	US-10454155-B2
Application number	US-201615283539-A
Country	US
Kind code	B2
Filing date	Oct 3, 2016
Priority date	Oct 26, 2015
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

An antenna module is disclosed. The antenna module includes a radiator. The radiator includes a first radiation part, a second radiation part connecting with the first radiation part partially and a coupling slot arranged between the first radiation part and the second radiation part. Further, the antenna module includes a circuit board which is arranged opposite to the radiator and includes a system base, a grounding line connecting with the system base electrically, a feeder line and a tuning switch controlling ON/OFF of the grounding line, and a capacitance feed sheet facing one side of the first radiation part which faces the circuit board and connecting with the first radiation part. The capacitance feed sheet is connected with the feeder line electrically; the grounding line is connected with the first radiation part electrically; and the system base is connected with the said second radiation part electrically.

First claim

What is claimed is:

1. An antenna module, including:
a radiator comprising a first radiation part, a second radiation part connected with the first radiation part partially, and a coupling slot extending straightly and arranged between the said first radiation part and the said second radiation part;
a circuit board arranged opposite to the said radiator, the circuit board including a system base, a grounding line connecting with the system base electrically, a feeder line and a tuning switch controlling the grounding line;
a capacitance feed sheet facing one side of the first radiation part which faces the circuit board and non-electrically connecting with the first radiation part, the capacitance feed sheet being connected with the feeder line electrically; wherein
the grounding line is connected with the first radiation part electrically to; and the system base is connected with the said second radiation part electrically;
the portion of the first radiation part where the grounding line is connected electrically to and the portion of the second radiation part where the system base is connected electrically to locate on the two opposite sides of the coupling slot.

2. The antenna module as described in claim 1 , wherein the tuning switch is a tunable LC resonant circuit which is connected between the system base and the grounding line electrically.

3. The antenna module as described in claim 2 , wherein the LC resonant circuit includes a fixed inductor and a tunable capacitor connected in parallel.

4. The antenna module as described in claim 1 further comprising a plastic installation member installed on the first radiation part; the capacitance feed sheet being fixed on an external surface of the plastic installation member facing the circuit board.

5. The antenna module as described in claim 1 , wherein the feeder line directly contacts with the capacitance feed sheet by a first pin.

6. The antenna module as described in claim 5 , wherein the grounding line directly contacts with the first radiation part by a second pin.

7. The antenna module as described in claim 6 , wherein the system base directly contacts with the second radiation part by a third pin.

8. The antenna module as described in claim 1 , wherein the radiation frequency of the said antenna module ranges from 700 MHz to 960 MHz.

9. A mobile terminal, comprising a metal rear cover and an antenna module as described in claim 1 , wherein the metal rear cover serves as a radiator of the antenna module.

10. The antenna module as described in claim 7 , wherein current flows along different routines when the antenna module radiates at different radiation frequency, the current flows from a portion corresponding to the first pin along the edge of the coupling slot to the third pin when the antenna module radiates at one radiation frequency and the current flows form a portion corresponding to the second pin along the edge of the coupling slot to the third pin when the antenna module radiates at another radiation frequency.

Assignees

• Choon Tan Yew
• Hong Ng Guan
• Siow Tay Yew
• Aac Technologies Pte Ltd

Inventors

• Choon Tan Yew
• Hong Ng Guan
• Siow Tay Yew

Classifications

• H01Q5/371

  Branching current paths · CPC title

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q1/244 Primary

  extendable from a housing along a given path · CPC title

• H01Q5/328

  between a radiating element and ground · CPC title

• H01Q13/103

  with variable reactance for tuning the antenna (tuning resonant circuits H03J) · CPC title