1. Field of the Invention
The present invention relates to an antenna module and, more particularly, to an antenna module having a reduction volume and fixed by a fixing part.
2. Description of the Related Art
With developments in technologies, many electronic devices in the market, such as portable navigation devices (PND) or personal navigation devices with wireless communications capabilities, have become lighter and smaller. In particular, users require that not only the functionalities of the portable devices; but they also require the portable devices to be lightweight and slim. Therefore, a traditional antenna cannot be disposed in portable devices.
In order to solve the aforementioned problem, a chip antenna design is disclosed in the prior art. Please refer to
However, when the chip antenna 90 in the prior art is used for transmitting the wireless signal, the transmission efficiency is only about 30% to 45%. In addition, the chip antenna 90 might be affected by other elements easily. Therefore, when the chip antenna 90 is disposed in electronic devices, there can be no other metal elements disposed around the antenna body 92 if interference of the transmission effect of the chip antenna 90 is to be avoided.
Therefore, it is desirable to provide an antenna to mitigate and/or obviate the aforementioned problems.
A main objective of the present invention is to provide an antenna module having a reduction volume and fixed by a fixing part.
Another objective of the present invention is to provide an electronic device having the antenna module.
In order to achieve the above mentioned objective, the electronic device of the invention comprises an antenna module and a wireless transmission module. The antenna module electrically connects to the wireless transmission module. The antenna module comprises an antenna body and a fixing part. The antenna body comprises a radiating element, a grounding element, a connecting element, and a feeding point. The radiating element has a first radiation area and a second radiation area. The connecting element has a first end and a second end; the first end is perpendicularly connected to the first radiation area of the radiating element substantially and the second end is perpendicularly connected to the grounding element substantially. The feeding point is disposed on the radiating element and used for feeding a signal. The fixing part comprises a main body and a first clip portion. The main body is used to match the shape of the antenna body. The first clip portion is used to clip and fix the antenna body.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
The advantages and innovative features of the invention will become more apparent from the following descriptions of the preferred embodiments.
Please refer to
In this embodiment, an antenna module 10 is a wireless fidelity (Wi-Fi) antenna. The Wi-Fi antenna is used to transmit in the frequency band ranging from 2.4 GHz to 2.5 GHz. The antenna module 10 comprises an antenna body 20 and a fixing part 30. The antenna body 20 is a patched inverse F antenna (PIFA), and the shape of the antenna body 20 matches with the fixing part 30. The antenna body 20 comprises a radiating element 21, a grounding element 22, a connecting element 23, and a feeding point F. The radiating element 21 is composed of a metal. When current is fed into the radiating element 21, the radiating element 21 excites radiation energy. The radiating element 21 comprises a first radiation area 211, a second radiation area 212, and a third radiation area 213, which are connected to each other. A gap 21a is disposed between the first radiation area 211 and the second radiation area 212; therefore, the antenna body 20 can be fixed on the fixing part 30 by the gap 21a. The fixation will be described in detail later.
The grounding element 22 is also composed of a metal and used for grounding the antenna body 20. The connecting element 23 comprises a first end 231 and a second end 232. The first end 231 of the connecting element 23 is perpendicularly connected to the first radiation area 211 of the radiating element 21 substantially, and the second end 232 of the connecting element 23 is perpendicularly connected to the grounding element 22 substantially. The third radiation area 213 of the radiating element 21 further comprises a feeding point F. The feeding point F and a feeding line (not shown) are electrically connected to each other and used for transmitting an electrical signal. The feeding line can be an RF cable or other type of transmission line.
With the connection relationship of the all elements aforementioned, the antenna body 20 becomes a 3-D structure. The antenna body 20 can decrease the height from the radiating element 21 to the grounding element 22 to reduce the volume of the antenna body 20. Therefore, the antenna body 20 can be disposed in an electronic device with a small structural space.
The fixing part 30 is composed of a plastic which is able to endure high temperatures. The fixing part 30 comprises a main body 31, a first clip portion 32, and a second clip portion 33. The shape of the main body 31 is matching with the antenna body 20. As shown in
The second clip portion 33 further has a platform structure 33a. The surface area of the platform structure 33a matches the size of the vacuum sucker (not shown). Therefore, the antenna module 10 executes a fabricated flow to be disposed in the electronic device 40 (as shown in
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Although the present invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.
Number | Date | Country | Kind |
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97128652 A | Jul 2008 | TW | national |
Number | Name | Date | Kind |
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6211830 | Monma et al. | Apr 2001 | B1 |
20060097928 | Takaba et al. | May 2006 | A1 |
Number | Date | Country | |
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20100026592 A1 | Feb 2010 | US |