TWM464840U - Printed circuit board type four-frequency broadband antenna - Google Patents

Description

Printed circuit board type quad-band wideband antenna

The present invention provides a printed circuit board type quad-band wide-band antenna, especially an antenna for receiving a wide-band four-frequency signal, forming a coplanar waveguide feeding region through a loading region formed on a printed circuit board, an impedance bandwidth angle, and a feeding region. , to achieve the purpose of receiving quad-band broadband signals.

According to the rapid development of the wireless communication industry, the signal receiving bandwidth of electronic and electrical communication products is also expanding. In various electronic and electrical communication products, the antenna has a very important role. In general, the antenna must have a low frequency. Return Loss must also have a wider bandwidth (Bandwidth) for the antenna to receive signals from the relevant frequency bands. The dual-band antennas currently used, such as the Global System for Mobile Communications (Global) System For Mobile Communications (GSM), with a bandwidth between 880MHz and 960MHz, and high-band, such as Wideband Code Division Multiple Access (WCDMA), with bandwidths from 1920MHz to 2170MHz. In addition to these low bandwidth, high band antenna signals.

However, today's communication environment is in addition to the Global System for Mobile Communications (GSM). Also included are code division multiple access systems (CDMA), digital communication systems (DCS), personal communication service systems (PCS), and broadband division multiple access systems (WCDMA), and various types of communication systems, and such communication systems The frequency band is approximately 824MHz~880MHz, 1710MHz~1880MHz, 1850MHz~1990MHz, 1920MHz~2170MHz; although the current antenna device can be applied to single-band, dual-band (GSM900/GSM1800) or three-band (GSM900/GSM1800/GSM1900), etc. In different countries' standards and fields, there are different specifications; however, the range of available bandwidth is quite limited, probably only about 13% of the bandwidth utilization, and the bandwidth of the antenna work cannot be increased by law. In response to the signal transmission of various communication systems, the use of the antenna is also limited, and multi-band operation cannot be performed.

Therefore, how to improve the current antenna's working bandwidth is limited, difficult to expand and trouble, and the antenna's bandwidth utilization is low, and the applicable communication system is less problematic and lacking, that is, the relevant manufacturers engaged in this industry Those who want to study the direction of improvement.

Therefore, in view of the above-mentioned problems and deficiencies, the creators have collected relevant information, evaluated and considered them through multiple parties, and have been designing such amplifiable antennas through continuous trial and modification through years of experience in the industry. The patented birth rate of the printed circuit board type quad-band wide-band antenna for multi-band quad-band wide-band signal reception and operation purposes to achieve a wider working bandwidth.

The main purpose of the present invention is to form a loading area on the surface of the printed circuit board of the four-band broadband antenna, a high-frequency radiation path extending along one side, and forming an impedance frequency of the broadband signal at the connection position between the loading area and the high-frequency radiation path. Wide angle, but asymmetric on the outside The common plane waveguide feeding region is further extended with a high frequency radiation path forming a four-frequency resonance, and a low-frequency radiation path, and the metal conductor for the signal transmission portion is electrically connected to the side of the high-frequency radiation path after crossing the low-frequency radiation path. The signal output side is extended on the other side of the metal conductor to achieve the purpose of transmitting the broadband four-frequency signal.

The secondary purpose of the present invention is that the printed circuit board of the four-band wide-band antenna can be provided with a predetermined type of hollow slot in the loading zone, the high-frequency radiation path and the low-frequency radiation path, and the predetermined type of slot is provided. The hole system can be a character (English word in Chinese or foreign language, Japanese character or specific symbol, symbol, etc.), a slot, a digital slot, a circle, a rectangle or a geometric shape or an irregular shape, a pattern or a trademark. Slot.

1‧‧‧Printed circuit board

11‧‧‧ Dipole antenna

12‧‧‧Loading area

13‧‧‧High frequency radiation path

131‧‧‧Signal Connection

14‧‧‧ impedance angle

15‧‧‧Low frequency radiation path

16‧‧‧Feeding area

2‧‧‧Signal Transmission Department

21‧‧‧Metal conductor

22‧‧‧ Signal output side

23‧‧‧Steering joint

231‧‧‧ pedestal

232‧‧‧Rotating seat

233‧‧‧ Fixed Department

3‧‧‧Protection enclosure

30‧‧‧ accommodating space

31‧‧‧ positioning slot

The first picture is a three-dimensional appearance of the creation.

The second picture is a three-dimensional exploded view of the creation.

The third picture is a top view of the creation.

The fourth figure is the experimental measurement of the return loss of the created antenna.

In order to achieve the above objectives and effects, the technical means and structure of the present invention are described in detail in the preferred embodiment of the present invention, and the features and functions are as follows.

Please refer to the first, second and third figures, which are the three-dimensional appearance, three-dimensional exploded view and top view of the creation. It can be clearly seen from the figure that the quad-band broadband antenna of the present invention includes the printed circuit board 1 and Signal transmission unit 2, wherein: The printed circuit board 1 is formed on one side of the surface to form an asymmetric dipole antenna 11, and the non-symmetrical dipole antenna 11 is provided on the surface of the printed circuit board 1 with a loading area 12 for receiving a broadband signal, and in the loading area. 12 extends to the other side to provide a narrow-range high-frequency radiation path 13 , that is, on the other side of the high-frequency radiation path 13 away from the loading area 12 , and then connected with the signal connection side 131 , and in the loading area 12 and the high-frequency radiation path The connection position of the 13 is connected to the side of the high-frequency radiation path 13 by extending the narrowed area, the convex-shaped impedance bandwidth angle 14 from the loading area 12 to the one side, and forming the impedance bandwidth angle 14 of the predetermined angle. There is a low frequency radiation path 15, and then on the outer side of the high frequency radiation path 13 and the low frequency radiation path 15 of the near impedance bandwidth angle 14, a coplanar waveguide feeding region 16 for receiving the wideband signal is formed.

The signal transmission unit 2 is provided with a metal conductor 21, and a signal output side 22 is connected to the metal conductor 21 side.

When the components are assembled, the signal line of the high-frequency radiation path 13 extending from the loading area 12 on the printed circuit board 1 to the other side is used, and the metal conductor 21 of the signal transmission part 2 crosses the low-frequency radiation path 15 The signal connection side 131 on the side of the high-frequency radiation path 13 is used for electrically connecting and connecting the metal conductor 21 (which may be combined by soldering or high-frequency welding or conductive adhesive, and electrically conductive) for transmitting four-frequency and multi-band. The signal can be composed of the printed circuit board 1 and the signal transmission unit 2 to form the quad-band wide-band antenna of the present invention.

The above-mentioned antenna of the present invention can cover the protective casing 3 on the outside of the printed circuit board 1, and through the internal accommodating space 30 of the protective casing 3, and on the side of the accommodating space 30, a positioning groove 31 penetrating to the outside is provided for the printed circuit. The board 1 is assembled and positioned in the accommodating space 30, and then the signal output unit 2 on the printed circuit board 1 side passes through the positioning slot 31 and extends to the outside of the accommodating space 30, and the signal output unit 2 is in the signal. Output side 22 A steering joint 23 is disposed, and a rotating seat 232 is disposed on a side of the base 231 of the steering joint 23, and the fixing portion 233 provided on one side of the rotating base 232 can be embedded in the positioning groove 31 of the protective casing 3. Then, the antennas are configured to transmit wireless signals, and the rotation direction of the printed circuit board 1 and the protective casing 3 can be adjusted through the steering joint 23.

The asymmetric dipole antenna 11 formed on the surface of the printed circuit board 1 is a grounding line of the loading region 12, the high-frequency radiation path 13, and the low-frequency radiation path 15 on both sides of the signal line of the high-frequency radiation path 13. The dipole structure is formed, and the high-frequency path impedance bandwidth angle 14 formed at the connection position between the loading region 12 and the high-frequency radiation path 13 is a predetermined angle design, and the impedance broadband angle 14 is a predetermined angle. Between 60° and 180°, and the impedance bandwidth angle 14 of the preferred embodiment is between 120° and 167°, and around the high frequency radiation path 13 of the near impedance bandwidth angle 14 The low-frequency radiation path 15 is provided with an asymmetric type triangular pyramid-shaped feeding region 16, and the grounding wire passing through the low-frequency radiation path 15 is used as a signal line of the high-frequency radiation path 13 to achieve transmission of quad-band and wide-band signals. And in order to achieve the performance of the four-frequency resonance, the signal line of the high-frequency radiation path 13 is used, the length of which is close to a quarter wavelength of the high-frequency operating frequency band, and then the ground line of the low-frequency radiation path 15 is Working close to low frequency The quarter-wavelength of the frequency band, through the design mode of the high-frequency radiation path 13 and the low-frequency radiation path 15, can achieve the purpose of four-frequency resonance, and the wavelength of the working frequency band is the center of the corresponding working frequency band. The frequency is calculated; the antenna of this creation, the working frequency band can adopt the LTE frequency band (can be applied to: code division multiple access system (CDMA), global mobile communication system (GSM), digital communication system (DCS), personal communication Service System (PCS) and Broadband Division Multiple Access System (WCDMA).

Please refer to the first, second, third and fourth figures, which are the three-dimensional external view, the three-dimensional exploded view, the top view, the return loss experimental measurement chart of the antenna and the attached attached chart, which are shown in the figure and the chart. It can be clearly seen that if the center frequency of the antenna of the present creation is about 1.71 GHz to 3.7 GHz, and the voltage standing wave ratio is less than 2.5 (VSWR), the operating frequency band (LTE band) of the antenna The operating frequency band of the low frequency is 790MHz~960MHz, and the operating frequency band of the high frequency of the antenna is: 1525MHz~1661MHz, 1710MHz~2690MHz, 3410MHz~3600MHz; the antenna has good impedance by increasing the working bandwidth of the antenna. Matching, and can achieve the purpose of four-band wide-band and multi-band operation, the radiation efficiency of the gain antenna can reach the wireless wide area network, etc., which can be used for the transmission of four-frequency and wide-band signals, and the four-band wide-band and multi-band of the high and low frequency bands of the antenna. The purpose of the operation of the frequency band.

Attachment chart: is the radiation efficiency table of the antenna:

Furthermore, the antenna signal of the present invention is fed into the loading region 12 structure by using an asymmetric co-planar waveguide, and the high-frequency radiation path 13 (signal line) passing through the loading region 12 of the antenna. It is surrounded by the low-frequency radiation path 15 (grounding line) for the antenna to form a monopole antenna similar to the coplanar waveguide feeding, thereby enhancing the working bandwidth and radiation efficiency of the antenna.

Furthermore, the loading area 12 for receiving the signal input of the quad-band and wide-band signals can be top-loaded, and one or more slots (SOLT) are arranged in the loading area 12 of the signal input. In order to increase the working bandwidth of the antenna and assist in adjusting the impedance matching to obtain a larger high-frequency working bandwidth; one or more of the high-frequency radiation path 13 and the low-frequency radiation path 15 may be separately chiseled. Hollow-shaped slots, and a larger working bandwidth can be obtained; and one or more of the above-mentioned slots can be a slot of a predetermined type, and the slot type of the predetermined type can be a text (Chinese or foreign language) English words, Japanese characters or specific symbols, symbols, etc.) Slots, digital slots, circular, rectangular or geometric or irregular shapes, patterns or trademarks, slots, various types of slots.

The high-frequency radiation path 13 is a signal line for transmitting a wide-band signal, and is surrounded by the low-frequency radiation path 15 on the two sides of the signal line of the high-frequency radiation path 13, that is, a ground line, and the signal is surrounded by the ground line. In a line manner, a coplanar waveguide feed region 16 is formed, Achieve the effect of receiving quad-band and wide-band signals.

Therefore, the above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. The printed circuit board type quad-band broadband antenna of the present invention is formed on the surface of the printed circuit board 1 to form an asymmetric couple. The pole antenna 11 and the signal loading region 12 of the dipole antenna 11 extend the high frequency radiation path 13 (signal line) to one side and the periphery is surrounded by the low frequency radiation path 15 (ground line), that is, the high frequency radiation path is utilized. The connection position of the signal line of 13 and the loading area 12 forms a narrowed impedance bandwidth angle 14, that is, a feeding region is formed around the high frequency radiation path 13 of the near loading region 12, the impedance bandwidth angle 14 and the low frequency radiation path 15. 16, and achieve the purpose of transmitting the antenna of the four-frequency bandwidth signal, and can be further provided on the loading area 12, the high-frequency radiation path 13 and the low-frequency radiation path 15 with a predetermined type of slot with the working frequency of the booster antenna Wide, good impedance matching, forming the performance of four-band wide-band and multi-band operation, and then through the asymmetric dipole antenna 11 to make the antenna overall type similar to the monopole antenna fed by the coplanar waveguide, which can increase the day The working frequency can be adjusted to help adjust the impedance matching and obtain a larger working bandwidth. Therefore, the structures and devices that can achieve the above effects should be covered by this creation, such simple modification and equivalent structural changes. It shall be included in the scope of the patent of this creation and shall be combined with Chen Ming.

Therefore, this design is mainly for the design of printed circuit board type quad-band wide-band antenna. The surface of the printed circuit board is used to form the loading area and the high-frequency path impedance bandwidth, and the high-frequency radiation path (signal line) is extended and externally connected. Surrounding the low-frequency radiation path (grounding line) and forming a coplanar waveguide feeding region for signal transmission, so that the antenna transmits the signal of the quad-band bandwidth as the main protection focus, and can reach the multi-band operation mode, and can be loaded The region, the high-frequency radiation path and the low-frequency radiation path are used to cut the slot, which only increases the working frequency of the antenna at high and low frequencies. In addition, the function of the bandwidth of the antenna can be utilized, but the above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the patent of the creation, so the application of the creation specification and the schema is used. The simple modification and equivalent structural changes of the content shall be included in the scope of the patent of this creation and shall be combined with Chen Ming.

In summary, the above-mentioned printed circuit board type quad-band wide-band antenna is designed to achieve its efficacy and purpose in actual use, so this creation is a practical and excellent creation, in order to meet the requirements of the new patent application.爰Proposing an application in accordance with the law, I hope that the trial committee will grant this case as soon as possible to protect the creators' hard work. If there is any doubt in the arbitral tribunal, please do not hesitate to give instructions, the creators will try their best to cooperate and feel good.

1‧‧‧Printed circuit board

11‧‧‧ Dipole antenna

12‧‧‧Loading area

13‧‧‧High frequency radiation path

131‧‧‧Signal Connection

15‧‧‧Low frequency radiation path

16‧‧‧Feeding area

2‧‧‧Signal Transmission Department

21‧‧‧Metal conductor

22‧‧‧ Signal output side

23‧‧‧Steering joint

231‧‧‧ pedestal

232‧‧‧Rotating seat

233‧‧‧ Fixed Department

3‧‧‧Protection enclosure

30‧‧‧ accommodating space

31‧‧‧ positioning slot

Claims (6)

A printed circuit board type quad-band broadband antenna includes a printed circuit board and a signal transmission part, wherein the printed circuit board is formed with a signal receiving loading area for receiving a broadband signal on the surface, and is extended from the loading area to one side. The high-frequency radiation path, and the connection position of the loading region and the high-frequency radiation path forms an impedance bandwidth angle of the broadband signal, and an asymmetric coplanar is disposed outside the high-frequency radiation path around the angle of the near-impedance bandwidth. a waveguide feeding region, that is, a high-frequency radiation path and a low-frequency radiation path forming a four-frequency resonance extending from the feeding portion to the other side away from the loading region; the signal transmitting portion is electrically connected to the printed circuit board and provided The metal conductor is electrically connected to the high-frequency radiation path across the low-frequency radiation path, and the signal output side of the broadband-frequency four-frequency signal transmission is extended from the metal conductor to the other side. The printed circuit board type quad-band wide-band antenna according to claim 1, wherein the loading area on the surface of the printed circuit board is extended to one side with an angle of the impedance bandwidth of the reduced area. The quad-band wide-band antenna of the printed circuit board type according to claim 2, wherein the impedance broadband angle is between 60° and 180°, and the impedance bandwidth of the preferred embodiment is between 120° and 167. ° between. The printed circuit board type quad-band broadband antenna according to claim 1, wherein the feeding region formed on the printed circuit board is provided with an asymmetric triangular pyramid-shaped coplanar waveguide around the angle of the near impedance bandwidth. Feeding area. The printed circuit board type quad-band broadband antenna according to claim 1, wherein the printing The loading region and the high-frequency radiation path formed on the brush circuit board receive the signal line of the four-frequency broadband signal; and the low-frequency radiation path formed outside the high-frequency radiation path is the ground line; that is, the ground line surrounds the signal line A coplanar waveguide feed region is formed. The printed circuit board type quad-band broadband antenna according to claim 1, wherein the printed circuit board loading area, the high-frequency radiation path and the low-frequency radiation path are respectively provided with a predetermined type of hollow slot, and the The slots of a given type are text-like slots, digital slots, circular, rectangular or geometric or irregularly shaped slots.