CN103178330A

CN103178330A - Monopole antenna

Info

Publication number: CN103178330A
Application number: CN2011104347065A
Authority: CN
Inventors: 黄智勇; 罗国彰; 杜健志
Original assignee: Arcadyan Technology Corp
Current assignee: Arcadyan Technology Corp
Priority date: 2011-12-22
Filing date: 2011-12-22
Publication date: 2013-06-26
Anticipated expiration: 2031-12-22
Also published as: CN103178330B

Abstract

The invention provides a monopole antenna which comprises a signal feeding portion, a radiation portion and a support portion connected with the signal feeding portion and the radiation portion. A first angle is formed by the radiation portion and the support portion and extends from the support portion, and a second angle is formed by the signal feeding portion and the support portion and extends from the support portion.

Description

Unipole antenna

Technical field

The invention relates to a kind of antenna, and particularly about a kind of unipole antenna.

Background technology

In recent years be subject to the universal impact of the equipment such as radio communication device such as mobile phone, notebook computer and even radio access device (AP), the antenna that makes the transceiver electronics signal also comes into one's own, especially antenna simple in structure more is received by the market, and wherein unipole antenna is structure one of the simplest antenna and being attracted attention.

Owing to requiring undersized wireless device, its antenna size also must minimization just be suitable for.Therefore there are some unipole antennas to be suggested in prior art, for example United States Patent (USP) 7,327,327 and 7,148, No. 848, two inventions all must the additional support tool to fix and to support unipole antenna, otherwise the Department of Radiation of antenna easily is out of shape because weight produces the inclination of direction up and down, and then affects the usefulness of antenna.But the size of the antenna that increases on the contrary due to additional supporting construction not only is difficult to reach the purpose with the antenna minimization, more increases the cost payout that antenna is made.Under such restriction, design the unipole antenna with Gao Zengyi, small size, broadband and excellent radiation pattern, will inevitably be severely limited.

This case applicant tests and research through concentrated in view of deficiency of the prior art, and a spirit of working with perseverance, and visualizes eventually this case " unipole antenna ", can overcome the deficiency of prior art, below is the brief description of this case.

Summary of the invention

The present invention is in order to overcome the defective in prior art, a kind of unipole antenna is proposed, has the wider beamwidth of antenna, corresponding different demands all have the effective service band that meets communications protocol, and reduce institute and take up space, can effectively save out the cost payout of many molds with the saving cost, and be fit to be applied in all-environment Wi-Fi device.

According to above-mentioned conception, the invention provides a kind of unipole antenna, comprising: the signal feeding portion; Department of Radiation; And support sector, be connected in this signal feeding portion and this Department of Radiation, accompany the first angle between this Department of Radiation and this support sector and extend from this support sector, accompany the second angle between this signal feeding portion and this support sector and extend from this support sector.

As the unipole antenna of said structure of the present invention, wherein this support sector is through being configured as untight ring-type, and this Department of Radiation comprises First and second one, and has the third angle degree between this First and this second one.

As the unipole antenna of said structure of the present invention, wherein this support sector has the first end that is connected in this First, and this second one is parallel to this support sector.

As the unipole antenna of said structure of the present invention, wherein this support sector has the second end and is connected in this signal feeding portion.

As the unipole antenna of said structure of the present invention, wherein the summation of this first angle and this third angle degree is 180 or 360 degree.According to above-mentioned conception, the invention provides a kind of unipole antenna again, comprising: body; And Department of Radiation, this body extends certainly, and has First and be connected in second one of this First, and wherein this First extends this body with a first direction, and this second one is extended this First with second direction.

Unipole antenna as said structure of the present invention, wherein this body is through being configured as untight ring-type, this Department of Radiation has more the first turn end and the second turn end, this first turn end is positioned between this First and this body, this second turn end is positioned between this First and this second one, and this second one is parallel to this body.

As the unipole antenna of said structure of the present invention, wherein this body has more the 3rd turn end and is connected in the signal feeding portion, and this signal feeding portion extends this body with third direction.

As the unipole antenna of said structure of the present invention, wherein this body, this Department of Radiation are formed in one.

Multiple the invention provides a kind of three-dimensional unipole antenna according to above-mentioned conception, comprising: radio-frequency part, it has radio band and pedestal form radio band, and wherein this pedestal form radio band can stably support this radio band and in order to receive and dispatch signal through being configured as.

Description of drawings

Fig. 1: the oblique view of the unipole antenna of the embodiment of the present invention.

Fig. 2: the end view of the unipole antenna of the embodiment of the present invention.

Fig. 3: the lower view of the unipole antenna of the embodiment of the present invention.

Fig. 4: the resolution chart of the voltage standing wave ratio of the unipole antenna of the embodiment of the present invention (DECT).

Fig. 5: the resolution chart of the voltage standing wave ratio of the unipole antenna of the embodiment of the present invention (WiFi 11b/g).

Fig. 6: the side-looking dimensional drawing of the unipole antenna of the embodiment of the present invention.

Embodiment

" unipole antenna " that this case proposes can be fully understood by following embodiment explanation, make the personage who has the knack of this skill to complete according to this, yet the enforcement of this case is not can be limited by the following example it to implement kenel, the personage who has the knack of this skill still can be according to deducing out other embodiment except the spirit of the embodiment that had both disclosed, and these embodiment all ought belong to scope of the present invention.

See also Fig. 1.Fig. 1 is the oblique view of the unipole antenna 1 of one embodiment of the present of invention.Unipole antenna 1 is made of conductive material, and with the metallic conductor material for better, and each assembly of unipole antenna 1 is formed in one.The primary clustering of unipole antenna 1 comprises support sector 3 and Department of Radiation 4.Support sector 3 is positioned at the first plane (figure shows), and the better untight ring-type (the present embodiment is like rectangle) that forms is connected in signal feeding portion 2 and Department of Radiation 4.

Department of Radiation 4 is positioned at the second plane (figure does not show), has the first turn end 4a, is the first end 31 that is connected in support sector 3.The second end 32 in support sector 3 is connected in signal feeding portion 2 via the 3rd turn end 3a.Department of Radiation 4 self-supporting sections 3 extend, and have First 41 and be connected in second one 42 of First 41.First 41 extends with first direction from this support sector 3, and second one 42 extends to spoke side 4c from First 41 with second direction.Department of Radiation 4 has more the second turn end 4b, and the second turn end 4b is between First 41 and this second one 42.Signal feeding portion 2 is used for connecting coaxial transmission line, to receive the signal from communication system, transmits via support sector 3, Department of Radiation 4.Signal feeding portion 2 extends antenna body (that is, signal feeding portion 2 extends with third direction from the second end 32 of support sector 3) with third direction.

Fig. 2 is the end view of the unipole antenna 1 of one embodiment of the present of invention.As shown in Figure 2, accompany the first angle [alpha] and extend self-supporting section 3 between Department of Radiation 4 and support sector 3.In addition, accompany the second angle γ and extend self-supporting section 3 between signal feeding portion 2 and support sector 3.Has third angle degree θ between the First 41 of Department of Radiation 4 and second one 42.The first angle [alpha] and third angle degree θ can be arbitrarily angled, but two angle summations be 180 or 360 the degree for better, this represents second one 42 is to be parallel to support sector 3.And, the second angle γ greater than 0 the degree with less than 180 the degree, but with 90 the degree for better.

The operational frequency bands of unipole antenna of the present invention can be WiFi 11b/g (2.40～2.50GHz) or DECT (1.88～1.90GHz), the size of signal feeding portion 2, support sector 3 and Department of Radiation 4 also can need to be adjusted according to aforesaid operations frequency band or impedance matching.That is to say, the length of antenna should be adjusted into the signal wavelength 1/4 for better.In addition, support sector 3 and Department of Radiation 4 are preferably not copline.

Fig. 3 is the lower view of the unipole antenna 1 of embodiments of the invention.According to Fig. 3 as can be known, although Department of Radiation 4 extends with this first direction and this second direction, but because during from the below, first end 31 has hidden First 41 and a part second one 42 on the visual angle, so Department of Radiation 4 belongs to same plane (the second plane) with first end 31.And support sector 3 is as the antenna body of supporting Department of Radiation 4, although be untight ring-type in an embodiment, and the structure of " sealing " be for increase antenna length reduce take up space and the design done.In addition, support sector 3 also is not limited to ring-type, and the structure that can it be stood for the suitable support aerial radiation such as quadrangle, triangle or polygon section.

See also Fig. 4, it is that the unipole antenna 1 of embodiments of the invention is at the resolution chart of the voltage standing wave ratio (VSWR:Voltage Standing Wave Ratio) of DECT operational frequency bands.In Fig. 4, be numbered 1～5 warning triangle, its voltage standing wave ratio is respectively 1.4121 (1.880GHz), 1.4076 (1.890GHz), 1.4094 (1.900GHz), 1.9407 (1.746GHz), 1.9571 (2.018GHz).See also Fig. 5, it is the resolution chart of the voltage standing wave ratio of unipole antenna 1 when WiFi 11b/g operational frequency bands of embodiments of the invention.In Fig. 5, be numbered 1～5 warning triangle, its voltage standing wave ratio is respectively 1.6453 (2.400GHz), 1.5577 (2.450GHz), 1.4996 (2.500GHz), 2.0150 (1.940GHz), 1.9994 (2.695GHz).By Fig. 4 and Fig. 5 as can be known, at exercisable two frequency bands of unipole antenna 1 of the present invention, all have lower than 2 even lower than 1.5 voltage standing wave ratio, at last quite desirable situation.

Table one

Table one carries out the test data table of antenna gain for unipole antenna 1 of the present invention at the bandwidth of 1.89GHz and 2.45GHz.As shown in Table 1, in meeting the running frequency band of wireless standard specification, unipole antenna of the present invention has reached the maximum gain of 3dBi, can fully accord with the demands of the market, and has had the performance of relative ideal in unipole antenna.

See also Fig. 6, it is the side-looking dimensional drawing of the unipole antenna 1 of embodiments of the invention.As can be known from Fig. 6, in unipole antenna 1, better dimensional configurations is: the thickness of Department of Radiation 4 is greater than the thickness of support sector 3.The length on the long limit of the length of second one 42 and support sector 4 about equally.As for the length of the length of the first end 31 of support sector 3 and the second end 32 also about equally.

The unipole antenna 1 of another embodiment of the present invention comprises: body 3; And Department of Radiation 4, extend from body 3, and have First 41 and be connected in second one 42 of First 41, wherein First 41 extends body 3 with first direction, and second one 42 is extended First 41 with second direction.

The three-dimensional unipole antenna 1 of another embodiment of the present invention comprises: radio-frequency part 4, it has

radio band

41,42 and pedestal

form radio band

3,31,32, and wherein pedestal

form radio band

3,31,32 can stably support

radio band

41,42 and in order to receive and dispatch signal through being configured as.

The present invention can be applicable in radio communication device, such as notebook computer, flat computer, mobile phone, radio access device and comprise the display of WiFi or audio and video player etc.

The real innovation that belongs to difficult energy of the present invention, dark tool industrial value is helped in accordance with the law and is filed an application.In addition, the present invention can make any modification by those skilled in the art, but does not break away from scope as claimed in appended claim.

[primary clustering symbol description]

1 unipole antenna

2 signal feeding portions

3 support sectors

31 first ends

32 the second ends

4 Departments of Radiation

4a the first turn end

4b the second turn end

The 4c spoke side

41 Firsts

42 second ones

α the first angle

γ the second angle

θ third angle degree

Claims

1. unipole antenna comprises:

The signal feeding portion;

Department of Radiation; And

Support sector is connected in this signal feeding portion and this Department of Radiation, accompanies the first angle between this Department of Radiation and this support sector and extends from this support sector, accompanies the second angle between this signal feeding portion and this support sector and extends from this support sector.

2. unipole antenna as claimed in claim 1, wherein this support sector is through being configured as untight ring-type, and this Department of Radiation comprises First and second one, and has the third angle degree between this First and this second one.

3. unipole antenna as claimed in claim 2, wherein this support sector has the first end that is connected in this First, and this second one is parallel to this support sector.

4. unipole antenna as claimed in claim 1, wherein this support sector has the second end and is connected in this signal feeding portion.

5. unipole antenna as claimed in claim 1, wherein the summation of this first angle and this third angle degree is 180 or 360 degree.

6. unipole antenna comprises:

Body; And

Department of Radiation, this body extends certainly, and has First and be connected in second one of this First, and wherein this First extends this body with first direction, and this second one is extended this First with second direction.

7. unipole antenna as claimed in claim 6, wherein this body is through being configured as untight ring-type, this Department of Radiation has more the first turn end and the second turn end, this first turn end is positioned between this First and this body, this second turn end is positioned between this First and this second one, and this second one is parallel to this body.

8. unipole antenna as claimed in claim 6, wherein this body has more the 3rd turn end and is connected in the signal feeding portion, and this signal feeding portion extends this body with third direction.

9. unipole antenna as claimed in claim 6, wherein this body, this Department of Radiation are formed in one.

10. three-dimensional unipole antenna comprises:

Radio-frequency part, it has radio band and pedestal form radio band, and wherein this pedestal form radio band can stably support this radio band and in order to receive and dispatch signal through being configured as.