CN200979911Y - broadband antenna - Google Patents

Abstract

The utility model discloses a wide band antenna, it is used for a mobile device, and this wide band antenna includes radiating element, ground element, connecting element and parasitic element. The connecting element comprises a first end and a second end, and the first end and the second end are respectively connected with the radiating element and the grounding element, so that the broadband antenna is bent into a three-dimensional structure, and the space for placing the broadband antenna in the mobile device is saved. The radiating element extends to form an additional radiating area for increasing the bandwidth and the radiation characteristic of the broadband antenna.

Description

Wide frequency antenna

Technical field

The utility model relates to a kind of wide frequency antenna, particularly relates to a kind of the have extra radiation areas and the wide frequency antenna of stereochemical structure.

Background technology

Along with the development of wireless communication technique, many electronic products that wireless communication function is provided have appearred now on the market, and for example mobile phone and mobile computer etc. have all extensively utilized wireless communication technique to come transmission information.Particularly utilize the communication frequency band of WWAN (Wireless Wide Area Network).Simultaneously, have wireless communication function in order to make these electronic products, prior art be in these electronic products, be provided with can the induced electricity magnetic wave antenna.

Prior art has disclosed a kind of wide frequency antenna.Please refer to the antenna 90 that Figure 1A has disclosed relevant for prior art in Taiwan application case numbers 95119253.Antenna 90 is the antenna of plane formula, and antenna 90 has a radiant element 91, a Connection Element 92 and an earth element 93.Wherein, Connection Element 92 has one first end 921 and one second end 922; And first end 921 of Connection Element 92 is connected to radiant element 91, the second ends 922 and is connected to earth element 93.The antenna 90 of prior art comprises that more a parasitic antenna 94 increases frequency range.In Figure 1B, show the voltage standing wave ratio (VSWR) that the antenna 90 according to prior art measures.

Today is each field of wireless communication no matter, still is in the period of numerous standards coexistences.Yet along with the lightening trend of electronic installation, the antenna that is used in the wireless telecommunication system needs minification to cooperate limited mechanism space.Therefore, how to develop a kind of antenna, its operation frequency range scope that contains can meet the wireless communication standard of normal use, and still has good impedance frequency range and antenna performance in the reduction volume, is producer, the person of selling and the ardent hope of user of antenna related industry.

The utility model content

Main purpose of the present utility model is to provide a kind of wide frequency antenna, can dwindle antenna volume and reach the effect that increases frequency range.

In order to reach above-mentioned purpose, wide frequency antenna of the present utility model is used for a mobile device.Wide frequency antenna comprises radiant element, earth element, Connection Element and parasitic antenna.Wherein radiant element comprises first radiation areas, second radiation areas and the 3rd radiation areas.Connection Element comprises first end and second end.Earth element comprises first plane and second plane.First end of Connection Element electrically connects second radiation areas of radiant element, and second end electrically connects first plane of earth element.And first radiation areas are perpendicular to one another adjacent with second radiation areas; Second end is perpendicular to one another adjacent with first plane.More comprise a load point on the Connection Element, the current signal between radiant element and the wireless signal module is to utilize the feed-in line to transmit via load point.Have a bending place between first plane of earth element and second plane, make the plane of winning be perpendicular to one another adjacent with second plane.

Parasitic antenna extends out in the end of second end, to increase the frequency range of wide frequency antenna.And radiant element also extends the 3rd radiation areas.The 3rd radiation areas are perpendicular to one another adjacent with first radiation areas.Wide frequency antenna just can have better frequency range and radiation characteristic thus.

After wide frequency antenna is fixed on the mobile device, electrically connect a feed-in line to the wireless signal module by load point again.Mobile device just can receive or transmit the device of wireless signal to other by wide frequency antenna thus, to reach the purpose of wireless telecommunications.

Advantage of the present utility model is, mobile device can receive or transmit the device of wireless signal to other by this wide frequency antenna, to reach the purpose of wireless telecommunications, antenna in this wireless telecommunication system has promptly been contained the wireless communication standard that the operation frequency range scope meets normal use again, still has good impedance frequency range and an antenna performance in the reduction volume.

Because the utility model structure is novel, can provide on the industry and utilize, and truly have the enhancement effect, so apply for novel patent in accordance with the law.

Description of drawings

Figure 1A is the antenna assumption diagram of prior art;

Figure 1B is for according to Figure 1A and show the schematic diagram of its voltage standing wave ratio;

Fig. 2 A is a wide frequency antenna stereogram of the present utility model;

Fig. 2 B is a wide frequency antenna front view of the present utility model;

Fig. 2 C is for according to Fig. 2 A and show the schematic diagram of its voltage standing wave ratio;

Fig. 3 is a system of the present utility model block schematic diagram.

The explanation of element conventional letter:

Wide frequency antenna 10

Radiant element 21

First radiation areas 211

Second radiation areas 212

The 3rd radiation areas 213

Earth element 22

First plane 221

Second plane 222

Connection Element 23

First end 231

Second end 232

Parasitic antenna 31

Load point 41

Mobile device 50

Wireless signal module 51

The antenna 90 of prior art

Radiant element 91

Connection Element 92

Earth element 93

First end 921

Second end 922

Parasitic antenna 94

Embodiment

Your, be described as follows especially exemplified by a specific embodiment for allowing juror can more understand technology contents of the present utility model.

Below please in the lump with reference to stereogram and the front view of figure 2A～Fig. 2 B about wide frequency antenna of the present utility model.

Wide frequency antenna 10 of the present utility model is used for a mobile device with transmitting wireless signals, for example the wireless communication frequency band of WWAN.Mobile device can be mobile computer, mobile phone or PDA(Personal Digital Assistant), but the utility model is not as limit.Wide frequency antenna 10 of the present utility model is to utilize the metal with good conductive degree to make, copper alloy for example, but the utility model is not as limit.

Wide frequency antenna 10 comprises radiant element (radiating element) 21, earth element (groundingelement) 22, Connection Element (connecting element) 23 and parasitic antenna (parasitic element) 31.Wherein radiant element 21 comprises first radiation areas 211, second radiation areas 212 and the 3rd radiation areas 213.First radiation areas 211 are perpendicular to one another adjacent with second radiation areas 212; First radiation areas 211 are perpendicular to one another adjacent with the 3rd radiation areas 213.Connection Element 23 comprises first end 231 and second end 232.Earth element 22 comprises first plane 221 and second plane 222.Radiant element 21 is constituted by metallic plate, and when current fed, radiant element 21 can pass through electric current exciting radiation energy.First end 231 of Connection Element 23 electrically connects first plane 221 of second radiation areas, 212, the second ends, the 232 electric connection earth elements 22 of radiant element 21.And second end 232 is perpendicular to one another adjacent with first plane 221.Have a bending place between first plane 221 of earth element 22 and second plane 222, make the plane 221 of winning be perpendicular to one another adjacent with second plane 222.And the surface area on first plane 221 is less than the surface area on second plane 222.On Connection Element 23, more comprise a load point (feeding point) 41, can electrically connect a feed-in line (figure does not show) on the load point 41, make that the current signal between radiant element 21 and the wireless signal module is via load point 41, utilize the feed-in line to transmit again.By above-mentioned stereochemical structure, make wide frequency antenna 10 can reduce radiant element 21 to the height between the earth element 22, dwindle the volume of itself, and can be positioned in the space of the reduced size that mobile device provides.

Parasitic antenna 31 in wide frequency antenna 10 is the metallic plate of strip, is located at the end of second end 232, to increase the frequency range of wide frequency antenna 10.And, being compared to prior art, radiant element 21 additionally extends the 3rd radiation areas 213.The 3rd radiation areas 213 are a kind of L type metallic plate.First radiation areas 211 are perpendicular to one another adjacent with the 3rd radiation areas 213, so parasitic antenna 31 is parallel each other with the 3rd radiation areas 213.Wide frequency antenna 10 can utilize the length of parasitic antenna 31 metallic plates own to control the size of frequency range, makes wide frequency antenna 10 can improve the frequency range of high frequency.The wireless signal of 900MHz can be transmitted in first radiation areas 211 of radiant element 21 and second radiation areas 212 in the utility model.The wireless signal of 1800MHz just can be transmitted in the 3rd radiation areas 213 of radiant element 21 and second radiation areas 212 by the end of first radiation areas 211.Parasitic antenna 31 can transmit the wireless signal of 2100MHz.By the stereochemical structure of the described wide frequency antenna 10 of leading portion and the 3rd radiation areas 213 that increase newly, make wide frequency antenna 10 compare with the antenna 90 of the prior art on plane, wide frequency antenna 10 can have better frequency range and radiation characteristic.The voltage standing wave ratio of the utility model wide frequency antenna 10 is just shown in Fig. 2 C.The voltage standing wave ratio (VSWR) of wide frequency antenna 10 less than 3 situation under, the low frequency place is about 0.8GHz between the 1.0GHz, the about 1.7GHz of high frequency is compared to the frequency range of the antenna 90 of prior art shown in Figure 1B between the 2.2GHz, and the frequency range of wide frequency antenna 10 is existing to be increased.

The system of last the utility model wide frequency antenna 10 and mobile device 50 just as shown in Figure 3, Fig. 3 is a system of the present utility model block schematic diagram.Wide frequency antenna 10 is installed in after the mobile device 50, electrically connects a feed-in line to wireless signal module 51 by load point 41 again.Mobile device 50 just can receive or transmit the device (figure do not show) of wireless signal to other by wide frequency antenna 10 thus, to reach the purpose of wireless telecommunications.

Claims (14)

1. wide frequency antenna, be used for a mobile device, it is characterized in that, this wide frequency antenna comprises: a radiant element (radiating element), this radiant element comprises one first radiation areas, one second radiation areas and one the 3rd radiation areas, second radiation areas are vertical is connected with this in these first radiation areas, and these first radiation areas are connected with the 3rd radiation areas; One earth element (groundingelement); One Connection Element (connecting element), this Connection Element comprise one first end and one second end, and this first end is connected with these second radiation areas, and this second end is connected with this earth element is vertical; And a parasitic antenna (parasitic element), be connected with this second end.

2. wide frequency antenna as claimed in claim 1 is characterized in that, this mobile device is a mobile computer, a mobile phone or a PDA(Personal Digital Assistant).

3. wide frequency antenna as claimed in claim 1 is characterized in that, this earth terminal more comprises one first plane and one second plane.

4. wide frequency antenna as claimed in claim 3 is characterized in that, second plane is orthogonal is connected with this on this first plane.

5. wide frequency antenna as claimed in claim 1 is characterized in that, this Connection Element more comprises a load point (Feeding point).

6. wide frequency antenna as claimed in claim 1 is characterized in that, the 3rd radiation areas and this parasitic antenna are parallel to each other.

7. wide frequency antenna as claimed in claim 1 is characterized in that, these first radiation areas and the 3rd radiation areas are orthogonal.

8. mobile device, comprise a wide frequency antenna, it is characterized in that, this wide frequency antenna comprises: a radiant element, this radiant element comprises one first radiation areas, one second radiation areas and one the 3rd radiation areas, second radiation areas are vertical is connected with this in these first radiation areas, and these first radiation areas are connected with the 3rd radiation areas; One earth element; One Connection Element, this Connection Element comprise one first end and one second end, and this first end is connected with the 3rd radiation areas, and this second end is connected with this earth element is vertical; And a parasitic antenna, be connected with this second end.

9. mobile device as claimed in claim 8 is characterized in that, this mobile device is a mobile computer, a mobile phone or a PDA(Personal Digital Assistant).

10. mobile device as claimed in claim 8 is characterized in that, this earth terminal more comprises one first plane and one second plane.

11. mobile device as claimed in claim 10 is characterized in that, second plane is orthogonal is connected with this on this first plane.

12. mobile device as claimed in claim 8 is characterized in that, this Connection Element more comprises a load point.

13. mobile device as claimed in claim 8 is characterized in that, the 3rd radiation areas and this parasitic antenna are parallel to each other.

14. mobile device as claimed in claim 8 is characterized in that, these first radiation areas and the 3rd radiation areas are orthogonal.

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