CN2865033Y

CN2865033Y - Delta-type antenna

Info

Publication number: CN2865033Y
Application number: CN 200620068900
Authority: CN
Inventors: 李武
Original assignee: Mitac Precision Technology Kunshan Ltd
Current assignee: Mitac Precision Technology Kunshan Ltd
Priority date: 2006-01-23
Filing date: 2006-01-23
Publication date: 2007-01-31
Anticipated expiration: 2016-01-23

Abstract

The utility model provides a triangular antenna consisting of a copper-surfaced circuit and a feeder line. The copper-surfaced circuit comprises a base plate and the base plate is provided on its back with an earth connection surface with metal layer an area without metal layer. The earth connection surface is located on one side of the base plate with a plurality of through-holes distributed in an array. The front of the base plate comprises an extension of the earth connection surface. The extension covers the area with through-holes and a micro band line is located on the side of the extension and the line is not connected with the extension. The micro band line is provided with a feeder point. The feeder point penetrates the front and the back of the base plate. The micro bank line extends to the boundary on the front of the base plate and the boundary is corresponding to the boundary of the earth connection surface on the back of the base plate. The micro band line breakthrough the boundary and extends to a triangular radiating transducer and the triangular radiating transducer extends to the edge of the base plate. The feeder line consists of an internal heart yarn and a shielding layer. One end of the internal heart yarn is joined with the feeder point by electric connection. One end of the shielding layer is joined with the earth connection surface by electric connection.

Description

Triangle antenna

[technical field]

The relevant a kind of antenna of the utility model particularly relates to a kind of triangle antenna of being realized with printed circuit that is applied to WLAN (wireless local area network) or Bluetooth technology.

[background technology]

At present, communication product on the market has the trend of microminiaturization gradually, and communication product is also integrated with other electronic product gradually.For example, communication device is installed in notebook computer, personal digital assistant etc.When this extra device was installed in electronic product, being bound to will be with its microminiaturization.Bluetooth of carrying out (Blue Tooth) and WLAN (wireless local area network) (Wireless LAN) technology more wish communication device and all electronic installations are integrated at present.In addition, the frequency that sets of the communication device trend that has past high frequency field to stride forward.Bluetooth technology, its fundamental frequency are 2.4G hertz (Hz), and WLAN (wireless local area network) then has the 2.4G hertz (Hz) of 802.11b and 5.25G hertz (Hz) and the 5.8G hertz (Hz) of 802.11a.Microminiaturization of the development trend of mechanics of communication high frequency and communication device so, inevitably, the design of antenna is microminiaturization correspondingly also.

The solution of antenna microminiaturization in the prior art, has become ripe development field.And adopt also successful Application of antenna that printed circuit realized.The related art antenna comprises one deck substrate and prints two metal levels up and down on it, last metal level comprises the conductor belt of signal feed-in microstrip line and prolongs the conductor belt radiant section of four minutes one wavelength from this conductor belt one end, lower metal layer comprises the ground plane of microstrip line and two sections four fens wavelength conductor belt radiant sections of its extension, signal source is by the microstrip line feed-in, and this antenna is applicable in general mobile phone, WLAN (wireless local area network) or other wireless telecommunications system.

But this existing antenna is because its ground plane is wide inadequately, so its radiation effect is bad, thereby gain is also less; And this aerial radiation partly is the conductor belt of four minutes one wavelength, and its radiation frequency scope is narrower, thereby causes the antenna bandwidth of operation not enough.

[summary of the invention]

In view of above problems of the prior art, the purpose of this utility model is to provide a kind of triangle antenna, this triangle antenna is realized with printed circuit, this triangle antenna is applied to WLAN (wireless local area network) or Bluetooth technology, and this triangle antenna is roomy than the prior art work zone, gain is big.

For reaching above-mentioned purpose, the utility model provides a kind of triangle antenna, this triangle antenna is made up of a printed circuit and a feeder line, this printed circuit includes a substrate, this substrate comprises tow sides, the ground plane and one that this substrate reverse side includes a printed metal layer is the type metal layer region not, this ground plane is positioned at substrate one lateral margin place array distribution some double-edged vias of substrate that penetrate, be coated with metal in this via, this substrate front side includes the extension ground of the ground plane that is printed with metal level, this extends the zone that ground covers all via places, this extension ground on one side with this extensions the ground connection that do not link to each other be printed with the microstrip transmission line of a long and thin metal layer region, there is a feedback point on this microstrip transmission line, this feedback point penetrates the substrate tow sides, this microstrip transmission line extends to the corresponding border of the border of substrate reverse side ground plane in substrate front side, and microstrip transmission line is broken through this border continuation extension and is printed with a triangle radiating doublet, and this triangle oscillator extends to substrate edges.This feeder line includes internal core wire and screen, and this internal core wire one end is electrically connected on this feedback point, and this screen one end is electrically connected at corresponding ground plane place.

Compared with prior art, the utility model has adopted the triangle oscillator, possesses the big characteristics of bandwidth, and the utility model increased the extension ground of ground plane, thereby has improved radiation effect, possesses the bigger characteristics of gain.

For making the purpose of this utility model, structural feature and function thereof there are further understanding, cooperate diagram to be described in detail as follows now:

[description of drawings]

Fig. 1 illustrates the front and the bottom view of printed circuit of a preferred embodiment of a kind of triangle antenna of the utility model.

Fig. 2 illustrates the structural representation of feeder line of a preferred embodiment of a kind of triangle antenna of the utility model.

Fig. 3 illustrates the voltage standing wave ratio test resolution of a preferred embodiment of a kind of triangle antenna of the utility model.

Electric field radiation test schematic diagram when the preferred embodiment that Fig. 4 illustrates a kind of triangle antenna works in the 2.45GHz frequency.

Magnetic field radiation test schematic diagram when the preferred embodiment that Fig. 5 illustrates a kind of triangle antenna works in the 2.45GHz frequency.

[embodiment]

A kind of triangle antenna one preferred embodiment of the utility model is made up of a printed circuit and a feeder line.

See also front and the bottom view of Fig. 1 for the printed circuit of a preferred embodiment of a kind of triangle antenna of the utility model.

This printed circuit includes a substrate 1, this substrate 1 comprises tow sides, the ground plane 2 and one that this substrate reverse side includes a printed metal layer is type metal layer region 3 not, this ground plane 2 is positioned at substrate one lateral margin place array distribution some double-edged vias 4 of substrate that penetrate, be coated with metal in this via, this substrate front side includes the extension ground 5 of the ground plane that is printed with metal level, this extends the zone that ground 5 covers all via 4 places, this extension ground on one side with this extensions the ground connection that do not link to each other be printed with the microstrip transmission line 6 of a long and thin metal layer region, there is feedback point 7 on this microstrip transmission line 6, this feedback point 7 penetrates the substrate tow sides, this microstrip transmission line 6 extends to the corresponding border of the border of substrate 1 reverse side ground plane 2 in substrate front side, microstrip transmission line is broken through this border continuation extension and is printed with a triangle radiating doublet 8, and this triangle oscillator extends to another lateral margin of substrate.

See also Fig. 2, Fig. 2 illustrates the structural representation of feeder line of a preferred embodiment of a kind of triangle antenna of the utility model.This feeder line is a coaxial cable, comprises internal core wire 10 and screen 20.And between this internal core wire 10 and the screen 20, comprise an insulating medium layer 30, between this screen 20 and the external world around it, include an insulating medium layer 40.

Please consult Fig. 1, Fig. 2 jointly, these internal core wire 10 1 ends are electrically connected on the feedback point 7, the other end of this internal core wire 10 and the microwave receiving/transmitting element on the electronic installation (not shown) electrically connect, these screen 20 1 ends are electrically connected at the ground plane place of feedback point 7 correspondences, and the other end of this screen 20 and the earth element on the electronic installation (not shown) electrically connect.

The working frequency range of one preferred embodiment of a kind of triangle antenna of the utility model is IEEE 802.11b2.4GHz-2.5GHz.

Fig. 3 is voltage standing wave ratio (Voltage Standing Wave Ratio, the VSWR) test resolution of triangle antenna shown in Figure 1.By among this figure as can be seen, at frequency range 2.4-2.5GHz, the voltage standing wave ratio of present embodiment triangle antenna (VSWR) is less than 2, thus satisfy the 802.11b consensus standard to antenna in the working frequency range scope, voltage standing wave ratio otherwise greater than 2.0 requirement.

Fig. 4 is the electric field radiation test schematic diagram when working in 2.45GHz of triangle antenna shown in Figure 1.

Fig. 5 is the electromagnetic field radiation test schematic diagram of triangle antenna shown in Figure 1 when working in 2.45GHz.

The utility model triangle antenna has good directivity.

To sum up, the gain of the utility model triangle antenna can meet the requirement to antenna gain with 802.11b fully, and the utility model triangle antenna has the good operation bandwidth.

Below only be the one preferable enforcement of the utility model triangle antenna, its working frequency range is the 2.4GHz-2.5GHz of IEEE 802.11b.And be the situation of 5.15GHz-5.35GHz and 5.725GHz-5.875GHz for working frequency range, just adjust the size of each one of antenna according to its corresponding frequencies.

Claims

1, a kind of triangle antenna, this triangle antenna is made up of a printed circuit and a feeder line, it is characterized in that, this printed circuit includes a substrate, this substrate comprises tow sides, the ground plane and one that this substrate reverse side includes a printed metal layer is the type metal layer region not, this ground plane is positioned at substrate one lateral margin place array distribution some double-edged vias of substrate that penetrate, be coated with metal in this via, this substrate front side includes the extension ground of the ground plane that is printed with metal level, this extends the zone that ground covers all via places, this extension ground on one side with this extensions the ground connection that do not link to each other be printed with the microstrip transmission line of a long and thin metal layer region, there is a feedback point on this microstrip transmission line, this feedback point penetrates the substrate tow sides, this microstrip transmission line extends to the corresponding border of the border of substrate reverse side ground plane in substrate front side, and microstrip transmission line is broken through this border continuation extension and is printed with a triangle radiating doublet, and this triangle oscillator extends to substrate edges.

2, a kind of triangle antenna as claimed in claim 1, this feeder line includes internal core wire and screen, and this internal core wire one end is electrically connected on this feedback point, and this screen one end is electrically connected at corresponding ground plane place.

3, a kind of triangle antenna as claimed in claim 1 is characterized in that, it is 2.4GHz-2.5GHz that this antenna receives frequency range.

4, a kind of triangle antenna as claimed in claim 1 is characterized in that, this antenna receives frequency range and can be 5.15GHz-5.35GHz.

5, a kind of triangle antenna as claimed in claim 1 is characterized in that, this antenna receives frequency range and can be 5.725GHz-5.875GHz.