ANTENNA

• US 20160315387A1
• Filed: 12/08/2014
• Published: 10/27/2016
• Est. Priority Date: 12/11/2013
• Status: Active Grant

• Current Assignee: Emw Co., Ltd.
• Original Assignee: Emw Co., Ltd.
• Inventors: KIM, Young Tae, SEONG, Won Mo, LEE, Kyoung Ho
• Granted Patent: US 9,997,833 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 13/106 Microstrip slot antennas patch antenna elements H01Q9/0407
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/14 Length of element or elements adjustable telescopic elements H01Q1/10

Abstract

An antenna using a length-adjustable slit includes a power supply line connected to a ground pad and a power supply pad for receiving a power supply signal from a PCB, the ground pad being connected to a case, a radiator formed on the case, the radiator including at least one slit having a dielectric embedded in the slit, and a plurality of switching terminals for controlling the resonant frequency of the slit.

Claims

1. :

An antenna comprising;

a case;

a ground pad connected to the case;

a power supply pad;

a power supply line connected to the ground pad and the power supply pad for receiving a power supply signal from a printed circuit board (PCB);

a radiator formed on the case, the radiator including at least one slit having a dielectric embedded therein; and

a plurality of switching terminals to control a resonant frequency of the radiator.

2. :

The antenna of claim 1, wherein the plurality of switching terminals adjust a length of each slit.

3. :

The antenna of claim 1, wherein the case is formed of a metal.

4. :

The antenna of claim 1, wherein the power supply line is formed on a substrate to have a loop type connected to the ground pad and the power supply pad.

5. :

The antenna of claim 1, wherein;

the radiator includes a first slit and a second slit for radiating signals in different frequency bands; and

the plurality of switching terminals includes first and second switching terminals, which are turned on or off according to a switching control signal received from the PCB and adjust a length of the first slit, and third and fourth switching terminals, which are turned on or off according to a switching control signal received from the PCB and adjust a length of the second slit.

6. :

The antenna of claim 5, wherein the first slit and the second slit overlap and are connected in a predetermined area.

7. :

The antenna of claim 5, wherein the first slit is formed to have a loop type and included in a loop of the power supply line.

8. :

The antenna of claim 5, wherein the second slit has a T shape.