TWM589911U - Broadband antenna fed by coplanar waveguide - Google Patents

Abstract

This creation is a wideband antenna fed by a coplanar waveguide. A dipole antenna is formed on a surface of a printed circuit board. The dipole antenna has a signal input side and a feed area is provided on each side of the signal input side. , A high-frequency radiation path and a low-frequency radiation path surrounding the high-frequency radiation path extend from the feeding areas to the other side, and one end of the signal transmission part has a metal conductor and the other end is provided for signal transmission On a signal output side, the metal conductive system is electrically connected to the high-frequency radiation path to obtain a larger working bandwidth reception effect, and the metal conductor of the signal transmission section is electrically connected through the signal line of high-frequency radiation And, through the signal output side provided on the other side of the metal conductor, the received signal is transmitted to the external preset electronic product to achieve the purpose of improving the reception effect of the dual-frequency signal and the utilization rate of the gain signal bandwidth.

Description

Broadband antenna fed by coplanar waveguide

The present invention provides a broadband antenna fed by a coplanar waveguide, especially a dipole antenna formed on a surface of a printed circuit board. The dipole antenna has a signal input side and a signal feed on each side of the signal input side The entry zone extends from the feed zones to the other side with a high-frequency radiation path and a low-frequency radiation path surrounding the high-frequency radiation path, and one end of the signal transmission section has a metal conductor and the other end is provided with a signal On the output side of a signal for transmission, the metal conductive system is electrically connected to the high-frequency radiation path to obtain a larger working bandwidth reception effect.

With the continuous progress of the electronic technology industry and the vigorous development of the wireless communication industry, many electronic/electrical products used in daily life also transmit signals through wireless transmission methods, such as smart mobile phones, global mobile Communication system (GSM), personal digital assistant (PDA) or computer and peripheral equipment and wireless network, notebook computer and wireless network, etc. In various electronic/electrical products, antenna plays a very important role, generally In addition to the low return loss (Return Loss), the antenna must also have a wider operating bandwidth (Bandwidth) for the antenna to receive the signal of the relevant frequency band. The dual-band antennas currently used are those with low frequency bands. Global System For Mobile Communications (GSM), its bandwidth is between 880MH z~960Mhz, and those with high frequency bands, such as Wideband Code Division Multiple Access (WCDMA), the bandwidth is between 1920MHz~2170MHz; except for the low and high frequency band antenna signals of these bandwidths.

However, in addition to the global mobile communication system (GSM), the current communication environment also includes a code division multiple access system (CDMA), a digital communication system (DCS), a personal communication service system (PCS), and a broadband division multiple access system (WCDMA) ), etc., various types of communication systems, and the frequency bands of these communication systems are approximately between 824MHz~880MHz, 1710~1880MHz, 1850~1990MHz, 1920MHz~2170MHZ; although the current antenna device can be applied to single band or dual band, but The available range of bandwidth is quite limited, probably only about 13% of the bandwidth utilization rate, and the bandwidth of the antenna is increased in law, it can not respond to the signal transmission of various communication systems, and the use of the antenna is also limited. Multi-band operation is not possible.

Therefore, how to improve the current working bandwidth of the antenna is limited to a specific frequency band area, which is not easy to expand and increase the troubles and troubles, and the low bandwidth utilization rate of the antenna is suitable for the communication system. The relevant manufacturers are eager to study the direction of improvement.

Therefore, in view of the above-mentioned problems and deficiencies in the practice, the creators collected relevant materials through multiple evaluations and considerations, and used many years of research and development experience in this industry to continuously trial and modify. New patent for broadband antenna was born.

The main purpose of this creation is to form a dipole sky on one surface of the printed circuit board Line, the dipole antenna has a signal input side and two sides of the signal input side are each provided with a feeding area, and a high frequency radiation path extending from the feeding areas to the other side and surrounding the high frequency radiation path A low-frequency radiation path, and one end of the signal transmission part has a metal conductor and the other end is provided with a signal output side for signal transmission. The metal conductive system is electrically connected to the high-frequency radiation path to obtain greater work Bandwidth receiving effect, and the metal conductor of the signal transmission part is electrically connected through the signal line of high frequency radiation, and the received signal is transmitted to the external preset electronic product through the signal output side provided on the other side of the metal conductor To achieve the purpose of improving the reception effect of dual-frequency signals and the utilization rate of gain signal bandwidth.

The secondary purpose of this creation is that the high-frequency radiation path is a signal line and the low-frequency radiation path is a connection area, and there is at least a distance between the connection area and the signal line to form the feed-in area, In order to form a multi-band resonance broadband antenna.

Another purpose of this creation is that there is a first spacing and a second spacing between the connection area and the two sides of the signal line, the first spacing range is 0.3~0.5mm; the second spacing range is 1~3mm.

1‧‧‧ printed circuit board

11‧‧‧Dipole antenna

12‧‧‧Signal input side

121‧‧‧Signal line

13‧‧‧Feeding area

14‧‧‧Access area

15‧‧‧ First pitch

16‧‧‧Second pitch

2‧‧‧Signal Transmission Department

21‧‧‧Metal conductor

22‧‧‧Signal output side

23‧‧‧Steering joint

230‧‧‧Locating hole

3‧‧‧Housing

30‧‧‧accommodation space

31‧‧‧Locating slot

310‧‧‧Perforation

32‧‧‧Locating parts

33‧‧‧ steering gap

The first figure is a perspective view of the creation of a wideband antenna fed by a coplanar waveguide.

The second figure is the first three-dimensional exploded view of the creation of a wideband antenna fed by a coplanar waveguide.

The third figure is the second three-dimensional exploded view of the creation of a wideband antenna fed by a coplanar waveguide.

The fourth figure is a side view cross-sectional structure diagram of a wideband antenna fed by a coplanar waveguide.

The fifth figure is a structural diagram of the creation of a dipole antenna on the printed circuit board.

The sixth picture is a partially enlarged view of the fifth picture of this creation.

The seventh figure is a line graph of the return loss of a wideband antenna fed by a coplanar waveguide.

In order to achieve the above purpose and effect, the technical means and structure used in this creation, the drawings and detailed description of the preferred embodiment of this creation, its structure and function are as follows, Poli fully understand.

Please refer to Figures 1 to 6 for the three-dimensional external view, first three-dimensional exploded view, second three-dimensional exploded view, side cross-sectional structural drawing, and printed circuit board arrangement The structural diagram of the dipole antenna and the partially enlarged view of the fifth diagram, as can be clearly seen from the figure, this creation includes: a printed circuit board 1, a signal transmission section 2 and a housing 3, each component is more detailed The explanation is as follows: the printed circuit board 1 has a dipole antenna 11 formed on one surface, the dipole antenna 11 is an asymmetric dipole antenna, and the dipole antenna 11 has a signal input side 12 and the signal input Each of the two sides of the side 12 is provided with a feed-in area 13, and a high-frequency radiation path and a low-frequency radiation path surrounding the high-frequency radiation path extend from the feed-in areas 13 to the other side.

The high-frequency radiation path is a signal line 121 and the low-frequency radiation path is a connection area 14, and there is at least a distance between the connection area 14 and the signal line 121 to form the feed-in area 13 to form A multi-band resonant broadband antenna. There is a first distance 15 and a second distance 16 between the connection area 14 and the two sides of the signal line 121. The first distance 15 ranges from 0.3 to 0.5 mm (mm); the second distance range is It is 1~3mm (mm), and an asymmetric dipole antenna is formed by the asymmetrical connection area 14 and the first and second spacings (15, 16).

The signal input side 12 uses a top-loading method (Top-loading) to obtain a larger high-frequency operating bandwidth.

The signal transmission part 2 has a metal conductor 21 at one end and a signal output side 22 for signal transmission at the other end. The metal conductor 21 is electrically connected to the high-frequency radiation path. The signal output side 22 is disposed in a steering joint 23, and the steering joint 23 is used to be fixed in a predetermined electronic product.

The printed circuit board 1 and the signal transmission part 2 are inserted into an accommodating space 30 in the housing 3, and two sides of the accommodating space 30 each have a positioning groove 31 positioned corresponding to the steering joint 23, and using two The positioning member 32 is inserted into the two positioning holes 230 of the steering joint 23 through one of the through holes 310 in the two positioning grooves 31 to form a positioning structure of the steering joint 23 and the housing 3 and the accommodating space of the housing 3 A steering notch 33 is provided on one side of 30 for a relative rotation between the steering joint 23 and the housing 3.

Please refer to the seventh figure, which is a line graph of the return loss of the wideband antenna fed into the coplanar waveguide. The test frequency band is from 0.5GHz to 6GHz. The complex reference point is sampled according to the linear graph, as follows The table shows:

From the above table, we can understand that the antenna of this creation operates in the low-frequency to high-frequency range of 0.5GHz to 6GHz, and its return loss is about -10.460 to -22.172dB, which meets the impedance matching standard.

In addition to the above return loss data, the antenna gain and performance of the broadband antenna fed by the coplanar waveguide introduced in this creation are also sampled and tested. The data is shown in the following table:

From the above table, it can be understood that the peak gain (dBi), 3D gain (dBi) and 3D radiation efficiency (%) of the antenna of this creation in the range of low-frequency to high-frequency operation of 0.5GHz to 6GHz are in line with the wideband antenna Standard and has good performance.

Through the disclosure of the first picture to the seventh picture, we can understand that this creation is a broadband antenna fed by a coplanar waveguide. A dipole antenna is formed on one surface of the printed circuit board, and the dipole antenna has a signal input side And the signal input side is provided with a feed zone on each side, a high frequency radiation path and a low frequency radiation path surrounding the high frequency radiation path extend from the feed areas to the other side, and one end of the signal transmission part It has a metal conductor and the other end is provided with a signal output side for signal transmission. The metal conductor system is electrically connected to the high-frequency radiation path to obtain a larger working bandwidth reception effect, and through high-frequency radiation The signal line is for the electrical connection of the metal conductor of the signal transmission part, and the received signal is transmitted to the external preset electronic product through the signal output side provided on the other side of the metal conductor, so as to improve the reception effect and gain of the dual-frequency signal The purpose of signal bandwidth utilization. This creation has a very high practicability in wireless electronic products, so a patent application is filed to seek the protection of patent rights.

The above detailed description is for the description of a preferred feasible embodiment of this creation, but this embodiment is not intended to limit the scope of the patent application of this creation. Any other changes and modifications that have been completed without departing from the spirit of the art disclosed in this creation Changes should be included in this creation Covered by patents.

To sum up, the wideband antenna fed by the coplanar waveguide mentioned above in this creation can indeed achieve its efficacy and purpose when in use, so this creation is a new model with excellent practicality, which is in line with the application requirements of the new patent. Applying in accordance with the law, I hope the review committee will grant this case as soon as possible to protect the creator's hard work. If there is any doubt in the bureau, please send me a letter and give instructions. The creator will try his best to cooperate and feel virtuous.

1‧‧‧ printed circuit board

11‧‧‧Dipole antenna

12‧‧‧Signal input side

121‧‧‧Signal line

13‧‧‧Feeding area

14‧‧‧Access area

15‧‧‧ First pitch

16‧‧‧Second pitch

Claims (6)

A broadband antenna fed by a coplanar waveguide includes: a printed circuit board, a dipole antenna is formed on one surface, the dipole antenna has a signal input side and a feed area is provided on each side of the signal input side, by The feed-in areas extend to the other side with a high-frequency radiation path and a low-frequency radiation path surrounding the high-frequency radiation path; and a signal transmission section having a metal conductor at one end and a signal transmission at the other end On a signal output side, the metal conductive system is electrically connected to the high-frequency radiation path. A broadband antenna fed by a coplanar waveguide as described in item 1 of the patent scope, wherein the high-frequency radiation path is a signal line and the low-frequency radiation path is a connection area, and the connection area and the signal line There is at least one gap between them to form the feed-in area to form a multi-band resonant broadband antenna. The wideband antenna fed by a coplanar waveguide as described in item 2 of the patent scope, wherein the connection area and the two sides of the signal line each have a first spacing and a second spacing, the first spacing range is 0.3~0.5mm; the second interval range is 1~3mm to form an asymmetric dipole antenna. The wideband antenna fed by a coplanar waveguide as described in item 1 of the patent scope, wherein the signal input side uses a top loading method to obtain a larger high-frequency operating bandwidth. The wideband antenna fed by a coplanar waveguide as described in item 1 of the patent scope, wherein the signal output side is set in a steering joint, and the steering joint is used to be fixed in a predetermined electronic product. The broadband antenna fed by the coplanar waveguide as described in item 1 of the patent application scope, where the printed The printed circuit board and the signal transmission part are inserted into a receiving space in a housing, and two sides of the receiving space each have a positioning slot corresponding to the positioning of the steering joint, and two positioning members are used to form the positioning slot One of the perforations penetrates the two positioning holes of the steering joint to form a positioning structure of the steering joint and the housing, and a steering gap is provided on one side of the housing space of the housing for the steering joint and the housing Make a relative rotation.

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