CN103178330B - monopole antenna - Google Patents

Abstract

The present invention provides a monopole antenna, comprising: a signal feeding portion; a radiating portion; and a supporting portion, which is connected to the signal feeding portion and the radiating portion, wherein a first angle is sandwiched between the radiating portion and the supporting portion and the supporting portion extends from the supporting portion, and a second angle is sandwiched between the signal feeding portion and the supporting portion and the supporting portion extends from the supporting portion.

Description

monopole antenna

technical field

The present invention relates to an antenna, and in particular to a monopole antenna.

Background technique

In recent years, affected by the popularization of wireless communication devices such as mobile phones, notebook computers and even wireless access points (APs), antennas used to send and receive electronic signals have also received attention, especially antennas with simple structures are more popular in the market, among which monopole The antenna has attracted attention because it is one of the antennas with the simplest structure.

Due to the requirement for a small-sized wireless device, its antenna size must be minimized to be applicable. Therefore, some monopole antennas have been proposed in the prior art, such as U.S. Patent No. 7,327,327 and No. 7,148,848. Both inventions must add supports to fix and support the monopole antenna, otherwise the radiating part of the antenna is easy to produce vertical and horizontal directions due to weight. Tilted and deformed, thereby affecting the performance of the antenna. However, since the size of the antenna is increased by the additional supporting structure, it is not only difficult to achieve the goal of miniaturizing the antenna, but also increases the manufacturing cost of the antenna. Under such constraints, it is bound to be quite limited to design a monopole antenna with high gain, small size, wide frequency band and excellent radiation pattern.

In view of the deficiencies in the existing technology, the applicant of this case finally conceived the "monopole antenna" of this case after careful testing and research, and with a persistent spirit, which can overcome the deficiencies of the previous technology. The following is a brief description of this case.

Contents of the invention

In order to overcome the defects in the prior art, the present invention proposes a monopole antenna, which has a wider antenna bandwidth, and can effectively use the frequency band in accordance with the communication protocol for different requirements, and reduces the occupied space, which can effectively save multiple sets of molds The cost expenditure is to save cost, and it is suitable for being applied in wireless network devices in various environments.

According to the idea above, the present invention provides a monopole antenna, comprising: a signal feed-in part; a radiation part; and a support part connected to the signal feed-in part and the radiation part, and a first angle and extend from the support part, the signal feed-in part and the support part have a second angle and extend from the support part.

According to the monopole antenna with the above structure of the present invention, wherein the supporting part is configured as an unclosed loop, the radiating part includes a first part and a second part, and there is a gap between the first part and the second part third angle.

According to the monopole antenna with the above structure of the present invention, wherein the supporting part has a first end connected to the first part, and the second part is parallel to the supporting part.

According to the monopole antenna with the above structure of the present invention, wherein the supporting part has a second end connected to the signal feeding part.

According to the monopole antenna with the above structure of the present invention, the sum of the first angle and the third angle is 180 degrees or 360 degrees. According to the above idea, the present invention provides a monopole antenna, including: a body; and a radiation portion extending from the body, and having a first portion and a second portion connected to the first portion, wherein the first portion is A first direction extends out of the body, and the second portion extends out of the first portion in a second direction.

According to the monopole antenna with the above-mentioned structure of the present invention, wherein the body is configured as an unclosed loop, the radiating part further has a first turning end and a second turning end, and the first turning end is located between the first part and the second turning end. Between the main body, the second turning end is located between the first part and the second part, and the second part is parallel to the main body.

According to the monopole antenna with the above structure of the present invention, the body further has a third turning end connected to the signal feed-in portion, and the signal feed-in portion extends out of the body in a third direction.

According to the monopole antenna with the above structure of the present invention, the body and the radiating part are integrally formed.

According to the above idea, the present invention provides a three-dimensional monopole antenna, including: a radio frequency section, which has a radio frequency section and a base form radio frequency section, wherein the base form radio frequency section is configured to stably support the radio frequency section and is used for sending and receiving signal.

Description of drawings

Fig. 1: A perspective view of a monopole antenna according to an embodiment of the present invention.

Figure 2: Side view of a monopole antenna of an embodiment of the present invention.

Figure 3: Bottom view of the monopole antenna of the embodiment of the present invention.

Fig. 4: Test chart of VSWR of the monopole antenna (DECT) according to the embodiment of the present invention.

Fig. 5: A test chart of VSWR of the monopole antenna (WiFi11b/g) of the embodiment of the present invention.

Fig. 6: A side dimension view of the monopole antenna of the embodiment of the present invention.

detailed description

The "monopole antenna" proposed in this case will be fully understood by the following examples, so that those who are familiar with the art can complete it. However, the implementation of this case cannot be limited by the following examples. Those skilled in the art can still derive other embodiments based on the spirit of the disclosed embodiments, and these embodiments all belong to the scope of the present invention.

See Figure 1. FIG. 1 is a perspective view of a monopole antenna 1 according to an embodiment of the present invention. The monopole antenna 1 is made of a conductor material, preferably a metal conductor material, and each component of the monopole antenna 1 is integrally formed. The main components of the monopole antenna 1 include a supporting part 3 and a radiating part 4 . The support part 3 is located on the first plane (not shown in the figure), preferably formed in an unclosed ring shape (resembling a rectangle in this embodiment), and connected to the signal feeding part 2 and the radiation part 4 .

The radiating part 4 is located on the second plane (not shown in the figure), has a first turning end 4 a, and is connected to the first end part 31 of the supporting part 3 . The second end portion 32 of the support portion 3 is connected to the signal feed-in portion 2 via the third turning end 3a. The radiation part 4 extends from the supporting part 3 and has a first part 41 and a second part 42 connected to the first part 41 . The first portion 41 extends from the support portion 3 in a first direction, and the second portion 42 extends from the first portion 41 to the radiation end 4 c in a second direction. The radiating part 4 further has a second turning end 4 b, and the second turning end 4 b is located between the first part 41 and the second part 42 . The signal feed-in part 2 is used to connect the coaxial transmission line to receive the signal from the communication system and transmit it through the support part 3 and the radiation part 4 . The signal feeding part 2 extends out of the antenna body in a third direction (ie, the signal feeding part 2 extends from the second end 32 of the supporting part 3 in a third direction).

Fig. 2 is a side view of a monopole antenna 1 according to an embodiment of the present invention. As shown in FIG. 2 , there is a first angle α between the radiation portion 4 and the support portion 3 and extends from the support portion 3 . In addition, there is a second angle γ between the signal feeding part 2 and the supporting part 3 and extends from the supporting part 3 . There is a third angle θ between the first portion 41 and the second portion 42 of the radiation portion 4 . The first angle α and the third angle θ can be any angles, but the sum of the two angles is preferably 180 or 360 degrees, which means that the second portion 42 is parallel to the supporting portion 3 . Moreover, the second angle γ is larger than 0 degrees and smaller than 180 degrees, but preferably 90 degrees.

The operating frequency band of the monopole antenna of the present invention can be WiFi11b/g (2.40-2.50GHz) or DECT (1.88-1.90GHz), and the size of the signal feeding part 2, the supporting part 3 and the radiation part 4 can also be operated according to the above-mentioned operating frequency band or impedance matching needs to be adjusted. That is to say, the length of the antenna should be adjusted to 1/4 of the signal wavelength, which is better. In addition, the supporting part 3 and the radiating part 4 are preferably not coplanar.

FIG. 3 is a bottom view of the monopole antenna 1 according to the embodiment of the present invention. It can be seen from FIG. 3 that although the radiation portion 4 extends in the first direction and the second direction, the first end portion 31 covers the first portion 41 and a part of the second portion 42 when viewed from below. , so the radiation portion 4 and the first end portion 31 belong to the same plane (second plane). Moreover, the supporting part 3 is used as the antenna body supporting the radiating part 4. Although it is an unclosed ring in the embodiment, the "unclosed" structure is designed to increase the length of the antenna and reduce the occupied space. In addition, the support part 3 is not limited to a ring shape, but may be a quadrilateral, triangular or polygonal structure suitable for supporting the antenna radiation part to stand.

Please refer to FIG. 4 , which is a test chart of VSWR (Voltage Standing Wave Ratio) of the monopole antenna 1 in the DECT operating frequency band according to the embodiment of the present invention. In Figure 4, the triangle marks numbered 1 to 5 have VSWRs of 1.4121 (1.880GHz), 1.4076 (1.890GHz), 1.4094 (1.900GHz), 1.9407 (1.746GHz), 1.9571 (2.018GHz) . Please refer to FIG. 5 , which is a test chart of VSWR of the monopole antenna 1 in the WiFi11b/g operating frequency band according to the embodiment of the present invention. In Figure 5, the triangle marks numbered 1 to 5 have VSWRs of 1.6453 (2.400GHz), 1.5577 (2.450GHz), 1.4996 (2.500GHz), 2.0150 (1.940GHz), 1.9994 (2.695GHz) respectively . It can be seen from FIG. 4 and FIG. 5 that in the two frequency bands in which the monopole antenna 1 of the present invention can operate, both have voltage standing wave ratios lower than 2 or even lower than 1.5, which is quite ideal.

Table I

Table 1 is the test data table of the monopole antenna 1 of the present invention in the communication frequency bands of 1.89 GHz and 2.45 GHz. As shown in Table 1, the monopole antenna of the present invention has achieved a maximum gain of 3dBi in the operating frequency band conforming to the wireless standard specification, which fully meets the market demand and has a relatively ideal performance among monopole antennas.

Please refer to FIG. 6 , which is a side dimension view of the monopole antenna 1 according to the embodiment of the present invention. It can be seen from FIG. 6 that in the monopole antenna 1 , the preferred size configuration is: the thickness of the radiation part 4 is greater than the thickness of the supporting part 3 . The length of the second portion 42 is substantially equal to the length of the long side 33 of the support portion 3 . As for the length of the first end portion 31 of the supporting portion 3 and the length of the second end portion 32 are also approximately equal.

The monopole antenna 1 of another embodiment of the present invention includes: a body 3; and a radiation portion 4 extending from the body 3, and having a first portion 41 and a second portion 42 connected to the first portion 41, wherein the first portion 41 extends out of the body 3 in a first direction, and the second portion 42 extends out of the first portion 41 in a second direction.

The three-dimensional monopole antenna 1 of another embodiment of the present invention includes: a radio frequency part 4, which has radio frequency sections 41, 42 and base form radio frequency sections 3, 31, 32, wherein the base form radio frequency sections 3, 31, 32 are The configuration is capable of stably supporting the radio frequency sections 41 and 42 and used for sending and receiving signals.

The present invention can be applied to wireless communication devices, such as notebook computers, tablet computers, mobile phones, wireless access devices, and displays or video players including WiFi.

The present invention is really an impossible innovative invention with great industrial value, and the application is filed according to the law. In addition, the present invention can be modified in any way by those skilled in the art without departing from the scope of protection as claimed in the appended patent scope.

[Description of main component symbols]

1 monopole antenna

2 signal feed-in part

3 support department

31 first end

32 second end

33 long side

4 radiation department

4a first turning end

4b second turning end

4c radiation end

41 Part 1

42 part two

α first angle

γ second angle

θThird angle

Claims (10)

1. a unipole antenna, including:

Signal feeding portion；

Department of Radiation, including first and second；And

Support sector, including first end, the second end and be connected to the long limit between this first end and this second end, this support sector is connected to 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, between this first and this second, there is third angle, and this support sector is suitable for supporting the structure that this Department of Radiation makes it stand, wherein this first angle and this third angle are arbitrarily angled, this second angle is between 0-180 degree, wherein this length of second is roughly equal with the length on this long limit, and the length of this first end is roughly equal with the length of this second end.

2. unipole antenna as claimed in claim 1, wherein this support sector is through being configured as untight ring-type.

3. unipole antenna as claimed in claim 2, wherein this first end of this support sector is connected to this first, and this second is parallel to this support sector.

4. unipole antenna as claimed in claim 3, wherein this second end of this support sector is connected to this signal feeding portion.

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

6. a unipole antenna, comprises:

Body, including first end, the second end and be connected to the long limit between this first end and this second end；And

Department of Radiation, extend from this body, and there is first and be connected to this second of first, wherein this first accompanies the first angle with this body and extends from this body, and this second with this first accompany the second angle and extend from this first, signal feeding portion and this body accompany third angle and extend from this body, and this body is be suitable for supporting the structure that this Department of Radiation makes it stand, wherein this first angle and this second angle are arbitrarily angled, this third angle is between 0-180 degree, wherein this length of second is roughly equal with the length on this long limit, and the length of this first end is roughly equal with the length of this second end.

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, and this second is parallel to this body.

8. unipole antenna as claimed in claim 7, wherein this body has more the 3rd turn end and is connected to this signal feeding portion.

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

10. a three-dimensional unipole antenna, comprises:

nullRadio-frequency part，It has radio band and pedestal form radio band，Wherein this radio band has first and is connected to this second of first，Wherein this pedestal form radio band includes first end、The second end and be connected to the long limit between this first end and this second end，And this pedestal form radio band can stably support this radio band make it stand and in order to receive and dispatch signal through being configured as，This radio band and this pedestal form radio band accompany the first angle and extend from this pedestal form radio band，Signal feeding portion and this pedestal form radio band accompany the second angle and extend from this pedestal form radio band，Wherein this first angle is arbitrarily angled，This second angle is between 0-180 degree，Wherein this length of second is roughly equal with the length on this long limit，And the length of this first end is roughly equal with the length of this second end.