Patent Grant
9219306
1. Technical Field
The present disclosure relates to antennas, and particularly to a printed circuit board (PCB) antenna, a PCB with the PCB antenna, and an electronic device.
2. Description of Related Art
An antenna is a necessary part of electronic devices with a communication function, such as, mobile phones and tablet computers. Usually, in order to reduce size of the electronic device, antennas are printed on a printed circuit board (PCB) to reduce overall size, which is more and more popular. As shown in
A charger and an electronic device to overcome the described limitations are thus needed.
Many aspects of the present disclosure are better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the views.
Embodiments of the present disclosure will be described with reference to the accompanying drawings.
The antenna body 10 includes a bared area 101. The bared area 101 is used to electrically contact with a conductive object MC to ground when testing the signal processing circuit 2. The bared area 101 is a conductive area with any shape.
When the PCB antenna 1 is working normally, the HF connector 40 is taken as a portion of the PCB antenna 1 to enlarge a length of the PCB antenna 1, thus enhancing the performance of the PCB antenna 1.
As shown in
When there is need to test the signal processing circuit 2, through adding the conductive object MC to a portion of the antenna body 10 corresponding to location of the bared area 101. The conductive object MC is electrically connected to the bared area 101 and the ground point GND, thus making the bared area 101 to electrically connect to the ground point GND via the conductive object MC. Then the antenna body 10 is grounded accordingly. Therefore, the signals received by the antenna body 10 are transmitted to ground directly and are not transmitted to the signal processing circuit 2 and do not interfere the signal processing circuit 2.
At the same time, the antenna body 10 and the antenna matching network 20 are taken as a conductive line, the HF connector 40 connects to the signal processing circuit 2 via the antenna body 10 and the antenna matching network 20. When the HF connector 40 is connected to the test device 41, the test device 41 is connected to the signal processing circuit 2 and the signal processing circuit 2 then can be tested accordingly.
In the embodiment, the conductive object MC can be a conductive pad or a conductive tape. When there is need to test the signal processing circuit 2, by adding the conductive object MC, it is capable of preventing the interference of the PCB antenna 1. When there is not need to test the signal processing circuit 2, the PCB antenna 1 can work normally by removing the conductive object MC.
In the embodiment, the HF connector 40 does not need to include the mechanical switch structure, thereby decreasing the cost.
The electronic device 200 can be a mobile phone, a tablet computer, a notebook computer, a digital photo frame, for example.
It is understood that the present embodiments and their advantages will be understood from the foregoing description, and various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its material advantages, the examples hereinbefore described merely being embodiments of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2012 2 05962521 U | Nov 2012 | CN | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 20100295569 | Chu et al. | Nov 2010 | A1 |
| 20110037667 | Varjonen et al. | Feb 2011 | A1 |
| 20130194139 | Nickel et al. | Aug 2013 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| 20140132470 A1 | May 2014 | US |
