TWM260011U - Wideband symmetric dipole array antenna - Google Patents

Description

M260011 4. Creation Description (1) [Technical Field to which the creation belongs] This creation is an array antenna with wideband symmetry and applied to electronic devices for wireless transmission, especially a wideband symmetry with a reflection plate. Dipole array antenna. [Previous technology] With the development of the wireless communication industry, users can use wireless transmission systems to transmit information regardless of the terrain. The antenna is a very important element in the wireless transmission system. The antenna can transmit the voltage and current of the transmitter. Transformed into electromagnetic waves, and then transmitted in the form of radiation in the air. Of course, the received electromagnetic waves can also be converted into voltage and current, and then processed on the receiving source to achieve the purpose of signal transmission. Dipole antenna ) Or Helical antenna. Although it is said that wireless communication is not limited by terrain, when the antenna is installed in a terrain obstacle area (such as a wall corner, a ceiling, etc.), the specific direction gain value is obviously insufficient, so that the communication quality is poor when receiving and transmitting signals. Therefore, a reflector is usually set next to the antenna to enhance the antenna directivity and increase the directivity gain value to obtain good communication quality. Although the structure and shape of the reflector affect its directivity gain, common reflectors are designed to be open to enhance their directivity. However, in order to accommodate the volume of the reflector, a larger housing is needed to cover the antenna substrate. With the reflector, under the design trend of light, thin, short and small, such an antenna design does not meet the trend requirements, so how to effectively improve

Page 5 M260011 4. Creation instructions (2) Antenna directivity and consideration of antenna size have become one of the issues to be solved by researchers. In addition, "Please refer to" Figure 1 ", which is a schematic diagram of the feeding network of a traditional parallel-serial feed antenna. In the design of the traditional array antenna 10," the so-called parallel-serial feed (P ara 1 1 e 1-Seres Feed) design antenna can only be used in a narrow frequency range (^: 4.9 ~ 5.0GHz, u-NII-One / Two5.15 ~ 5.35GHz, U-NII_Th \ ee 5j 7 2 5 ~ 5.8 7 5GHz), can not simultaneously meet the needs of wireless communication application frequency bands covering multiple frequency bands (for example: 4 · 9 ~ 5 · 8 7 5GHz), ^, f may need to choose more than two Antennas, so how to effectively increase the transmission bandwidth of 2 I and 2 lines to save users from having to purchase multiple antennas has also become one of the problems that researchers need to solve. [Creation content] The creation of 2 2 ΐ 2 Ϊ can not solve the problems and existing shortcomings, so in order to achieve the above purpose t T f to increase the antenna directivity. The array antenna includes the ^^^ f broadband symmetrical symmetrical dipolar radiating element and the reflecting plate, i, the nominal feed-in network and the symmetrical line path to increase the transmission. Road, its meandering element, is used to generate light radiation angle == radiant unisexuality; the reflector is arranged in parallel with the antenna's radiant number to increase its pointing to a specific direction to strengthen obstacles and taxis. The side is used to reflect the radiation signal through the stomach with this reflective plate: sexual gain value. For% sex dipole array antenna, use

M260011 4. Creation instructions (3) Symmetrical antenna circuit structure with a feeding network design with a graceful section of the line 'In addition to increasing the transmission bandwidth, the radiation angle of the radiated signal is further reduced to enhance its directivity' and By increasing the directional gain value of the reflector, the purpose of increasing the transmission bandwidth and directivity of the array antenna is achieved. Regarding the specific and feasible implementation methods of this creation, the following description is given in conjunction with the drawings: [Embodiment] ^ Please refer to "Figure 2" is a three-dimensional exploded view of this creation, which includes: antenna 10, reflector 20, and metal wires 30. The connector 40, the base 50, and the shell 60.

The reflecting plate 20 is arranged parallel to one side of the antenna 10 and is spaced a predetermined distance apart. The antenna 10 is a printed circuit antenna, and the material is a non-metallic material (eg, Rogers RO-4350B (Made of), having a first surface 101 and a second surface 102, and using a chemical engraving method to make a desired circuit pattern. The two ends of the reflecting plate 20 have flanges 2 丨 and 22 respectively, which are used to insert the slots on the base 50 and the slots on the housing 60 to fix the reflecting plate.

20 'The reflecting plate 20 is a flat plate and has an area approximately equal to that of the antenna, and the material of the reflecting plate 20 is a metal material. The metal material has a shielding effect on electromagnetic waves.' Radiation from 10 = ϋ A specific square to increase the gain value of antenna directivity. Go- Λ body wide touch is roughly -L-shaped, for fixing to a support frame (G wire 30 connected in the picture, ΓΛ'has-connector 4〇, one end of connector 40 uses f " line 10 signal Feed point 1 1 and connector 4 〇

M260011 4. The other end of the creative description (4) is used to connect to an electronic device (not shown). It is connected to the base 50 to cover the antenna '10 and the reflection plate. The function of protecting the antenna 10 and the reflection plate 20 is as follows. The shell 60 and the base 50 form: a hunting body to cover the antenna 10 and the reflecting plate 20. The first picture, "picture M", is a front view of the antenna substrate mentioned in this creation. On one surface 1001, a right counter-blade circuit 110 is provided, which includes a signal feeding point 丨 丨 as the first feeding network 110a and the second feeding network 1 of the two networks. The 对称, which is formed into two symmetrical structures, is connected to the next Λ, and the Λ subcenter is formed by the first feeding unit element =, the upper feeding unit in, and the fourth feeding unit to form a first-feed network 110a, and the antenna ^: The structure is composed of: on the 11Ga-side of the first person network, each feeding unit has a different bowl 110b; its: / knife point 11b extends to the sides of the antenna and is formed by Bifurcation point 11 a Design of decreasing zigzag path, i joint / path 'has a zigzag path strip formed by sequential U spider line f = row 150 = bluffing feed point 11 to each radiating element The ten-purpose thinking is to make the transmission bandwidth increase by A and equal in transmission and heads. In this regard, it has an impedance matching unit 1 51, and uses 'E' and each branch value of 1 5 0 . To match the required impedance of the line, refer to "Figure 4B", which is a front view of the surface, the symmetrical radiation antenna 120 of the antenna substrate is set in the second table

M260011 IV. Creation Instructions (5)-Surface 1 0 2 is arranged symmetrically in two rows on the left and right with the signal feed point 11 as the center. It is used to face the signal fed into the network and transmit the signal by radiation. Each radiating unit 120 is roughly T-shaped. The horizontal radiation direction signal of the T-shaped structure is wider than the vertical radiation direction, that is, it has better directivity. By using a parallel arrangement, the directivity can be improved, and Corresponding to a feed unit, the symmetrical arrangement of the structure will reduce the radiation angle of the radiation signal (for example, from 120 ° to 60 °) to increase the directional gain of the wireless signal. The reflecting plate 20 is arranged in parallel to the antenna 10-side and is spaced a predetermined distance apart. The two ends of the reflecting plate 20 have flanges 21 and 22 respectively, and are used to be inserted into the socket and the shell on the base 50. The slot on 60 is to fix the reflective plate 20 'the reflective plate 20 is a flat plate' and has a size area approximately equal to that of the antenna 10, and the material of the reflective plate 20 may be a metal such as an inscription, iron or stainless steel The material uses metal to shield electromagnetic waves, and reflects the radiation signal of the antenna 10 to a specific direction to enhance the antenna directivity. Among them, a plurality of holes 20a can be opened on the reflecting plate 20, and a plurality of holes 20b can also be provided corresponding to the antenna 10, and can pass through fixed components (for example, plastic rivets, rivets, plastic screws, etc.) Fix the reflecting plate 20 and the antenna 10. In addition, the antenna of this creation can be applied to the IEEE 802.1 · 1la communication protocol developed by the Institute of Electrical and Electronic Engineers (IEEE), and fed into the network by fine-tuning the symmetry. The distance of the unit 1 2 0, and the reflection plate 2 0

M260011 4. Creation instructions (6) High and low positions for use in the frequency range of 4.9 ~ 5 · 8 7 5 G Η z. With this symmetrical dipole array antenna, the symmetrical antenna circuit structure is used to increase the transmission bandwidth and reduce the radiation angle of the radiated signal to enhance its directivity and strengthen the directivity by the reflector. The gain value achieves the purpose of increasing the transmission bandwidth and directivity of the array antenna; and through the design of the feeding network of the winding path of the meandering section, a wider antenna transmission bandwidth can be achieved. In addition, the actual creation of the radiation field profile and the voltage standing wave ratio test chart are also illustrated, with frequencies of 4.90GHz, 5.15GHz, 5.50G Η z, and 5.85 G Η z, respectively. For different tests, please refer to "Figure 5A" for the radiation field pattern of V-polarization; "Figure 5B" for the radiation field pattern of Η_polarization; and "Figure 5C" for The voltage standing wave ratio is measured in the frequency range of 4.50GHz ~ 6.50GHz. The above are only the preferred embodiments of this creation, and are not intended to limit the scope of implementation of this creation; that is, all equal changes and modifications made in accordance with the scope of the patent application for this creation are covered by the scope of this creation patent .

The M260011 diagram on page 10 is briefly explained. The first diagram is a schematic diagram of the feeding network of a traditional parallel-serial feed antenna. The second diagram is a three-dimensional exploded diagram of the antenna mentioned in this creation. The third diagram is this. Schematic illustration of the stereo combination of the antenna mentioned in the creation; Figure 4A is a front view of the first surface of the antenna substrate mentioned in the creation; Figure 4B is a front view of the second surface of the antenna substrate mentioned in the creation; Figure 5 A is the V-polarized radiation field pattern mentioned in this creation; Figure 5 B is the V-polarized radiation field pattern mentioned in this creation; and Figure 5 C is this creation The voltage standing wave ratio chart mentioned. [Illustration of symbolic symbols] 10 antenna 10 1 first surface 1 0 2 second surface 11 signal instrument entry point 11a divergence point lib divergence point 110 symmetry feed network 110a first feed network 110b second feed network Road 111 First feeding unit 112 Second feeding unit 1 13 Third feeding unit 1 14 Fourth feeding unit 115 Fifth feeding unit

Page 11 M260011 Brief description of the diagram 120 Radiation unit 150 Transmission line bus 151 Impedance matching 20 Reflector 20a Hole 20b Hole 21 Flange 22 Flange 30 Metal guide wire 40 Connection base 50 Base body 60 Housing

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Claims (1)

M260011 5. Scope of patent application 1. A wideband symmetrical dipole array antenna, the antenna is arranged on a substrate, the substrate has a first surface and a second surface, and the antenna includes: a symmetry feed into the network, The antenna is arranged on the first surface of the antenna, and a plurality of feeding units are arranged symmetrically. The plurality of feeding units are used to increase the transmission bandwidth. A symmetrical radiation unit is arranged on the second surface of the antenna. A plurality of radiating elements are symmetrically arranged, coupled to the signal fed into the network, radiating the corresponding radiation signal, and having a symmetrically arranged structure to reduce the radiation angle of the radiation signal; and a reflecting plate is disposed in parallel with the One side of the antenna is made of a metal material, and a predetermined distance from the symmetrical radiation unit is used to reflect the radiation signal to increase the directivity of the antenna. 2. The broadband symmetrical dipole array antenna as described in item 1 of the scope of patent application, wherein the plurality of feed-in units have a meandering section line. 3. The broadband symmetrical dipole array antenna as described in item 1 of the scope of the patent application, wherein the divergence point of the plurality of feeding units has an impedance matching section for matching the impedance value required for the antenna line. 4. The broadband symmetrical dipole array antenna as described in item 1 of the scope of patent application, wherein the radiating element is roughly T-shaped. 5. The broadband symmetrical dipole array antenna as described in item 1 of the patent application range, wherein the antenna is a printed circuit antenna. @ 6. The broadband symmetrical dipole array antenna as described in item 1 of the scope of patent application, wherein the substrate material of the antenna is made by R 〇 g e r s R 0-4 3 5 〇 B Page 13 M260011 5. Scope of patent application. 7. The wideband symmetrical dipole array antenna according to item 1 of the scope of patent application, wherein the antenna and the reflecting plate are further located in a casing for protecting the antenna and the reflecting plate. 8. The broadband symmetrical dipole array antenna according to item 1 of the scope of patent application, wherein the reflecting plate is further provided with a plurality of holes, so that the antenna is locked on the reflecting plate by a fixing element. 9. The broadband symmetrical dipole array antenna according to item 1 of the scope of patent application, wherein one end of the reflecting plate has more than one flange for inserting into a corresponding slot of a body to fix the Reflective plate. 10. The broadband symmetrical dipole array antenna according to item 1 of the scope of patent application, wherein the material of the reflecting plate includes aluminum. 1 1. The broadband symmetrical dipole array antenna according to item 1 of the scope of patent application, wherein the material of the reflecting plate includes iron. 1 2. The broadband symmetrical dipole array antenna according to item 1 of the scope of patent application, wherein the material of the reflecting plate includes stainless steel. 1 3. The wideband symmetrical dipole array antenna according to item 1 of the scope of patent application, wherein the area of the reflecting plate is approximately equal to that of the antenna. Page 14