TWM517917U - Antenna structure - Google Patents

Description

Antenna structure

This creation is an antenna structure, especially an antenna structure with multi-band, wide bandwidth and improved radiation efficiency.

With the growth of wireless communication software and hardware technology, mobile communication technology has evolved from the early 2G and 3G to today's 4G (LTE, Long Term Evolution, long-term evolution technology), requiring antennas to be small, multi-band, Large bandwidth and high radiation efficiency are upgraded to meet market demand.

At present, the multi-band antennas commonly used in the market are Planar Inverted-F Antenna (PIFA). This type of antenna uses a simple two-dimensional design to print the copper process directly onto the printed circuit board through a printed circuit board (PCB) manufacturing process to form a flat multi-band multi-band antenna, or to use foil technology to stamp metal foil Stamping forms a multi-frequency antenna with a three-dimensional design. In the prior patent document, a "surface-mount multi-frequency antenna module" is disclosed in the first to third and eighth figures of the patent I463738. It comprises a substrate and a carrier.

The substrate has a first surface and a second surface. The first surface has a first grounded metal surface and a first microstrip line. The first microstrip line has a front section and a rear section. The front section has a through hole, and the front section of the first microstrip line extends. In the first grounded metal surface, and A gap is formed with the first grounded metal surface. a second microstrip line is coupled to one side of the first grounded metal surface, the second microstrip line is juxtaposed in parallel with the rear portion of the first microstrip line, and the rear portion of the first microstrip line is Having a spacing between the second microstrip lines, the spacing width formed between the rear portion of the first microstrip line and the second microstrip line, the coupling capacitance value can be adjusted to make the first grounding metal The surface can form a high-frequency resonance point, thereby increasing the bandwidth. In addition, the first surface has a corresponding set of two fixed contacts for fixing the carrier. Further, the second surface has a second grounded metal surface electrically connected to the grounding portion of the joint of the copper shaft cable.

The carrier is formed of a high dielectric constant ceramic material having a first radiating metal portion, a second radiating metal portion and a third radiating metal portion. The first radiating metal portion, the second radiating metal portion and the third radiating metal portion are disposed on at least one or both surfaces of the carrier with different rectangular metal patterns and straight strip metal patterns, so that the volume of the antenna Miniaturized. The first radiating metal portion is electrically connected to the second radiating metal portion, and the first radiating metal portion and the second radiating metal portion are not electrically connected to the third radiating metal portion. When the carrier is electrically connected to the substrate, the first radiating metal portion and the second radiating metal portion are electrically connected to the two fixed contacts on the first surface of the substrate, so that the carrier can be fixed to the carrier. On the first surface of the substrate. The junction of the first radiating metal portion and the second radiating metal portion is electrically connected to the first microstrip line, and the third radiating metal portion is electrically connected to the second microstrip line to form a plurality of Frequency antenna module.

In the low frequency response, the first measurement point has a frequency value of about 700 MHz, and the third measurement point has a frequency value of about 960 MHz, so the third measurement point and the first measurement point have a difference of about 260 MHz, and the second The return loss of the measurement point in the low frequency response is approximately -11.66dB, the frequency of the low frequency response is slightly larger, and the reflection loss value is closer to -12dB and the gain is smaller. Furthermore, in the medium and high frequency response, the fourth measuring point has a frequency value of about 1.71 GHz, and the fifth measuring point has a frequency value of about 2.17 GHz, so that the fifth measuring point is different from the fourth measuring point. It is 460MHz, and the reflection loss value between the fourth measurement point and the fifth measurement point can reach about -17dB in the medium and high frequency response, and the bandwidth is small when the medium and high frequency response are generated. The gain is slightly larger.

In this technical solution, when the medium and high frequency response work, the bandwidth characteristics are narrow and cannot be applied to a higher frequency communication working range, so the long term evolution (LTE, Long Term Evolution) full band (Full Band) The network is suitable for a considerable number of frequency bands, and the frequency bands selected by different regions of different countries are different. Taiwan currently uses 700/900/1800MHz, which is expected to be open to 2600MHz or higher. For this conventional antenna structure, Not applicable. In the low-frequency response, the reflection loss of the second measurement point is 700MHz~960MHz, which is close to -10dB and the gain is small, resulting in poor characteristics. Therefore, how to improve the above-mentioned deficiencies, that is, the technical difficulties that the applicant of this case wants to solve.

In view of the lack of custom, the purpose of this creation is to develop an antenna structure that is multi-band, wide-bandwidth, and enhances radiation efficiency.

In order to achieve the above object, the present invention provides an antenna structure, comprising: a carrier, the carrier is provided with a first recess and a second recess, and the carrier is provided with a plurality of first chamfers around the carrier, the first A plurality of second chamfers are arranged around the groove, and a plurality of third chamfers are arranged around the second groove; a radiator is fixedly formed on the surface of the carrier.

Wherein the carrier is in the shape of a long rectangular body, and the radiator is provided with a first metal radiating portion and a second metal radiating portion, and the first metal radiating portion is formed on the long side of the carrier The second metal radiating portion is formed on the first surface and the second surface of the long side of the carrier and is integrally formed with a first extending portion and a second extending portion, and the first extending portion is formed on one side and the second surface On a first side of the long side of the carrier, and the second extension is formed on a second side of the long side of the carrier, the first metal radiation portion is adjacent to the second metal radiation portion and the second extension thereof The second metal radiating portion is provided with a first notch on the second surface of the long side of the carrier, and the second metal radiating portion is formed on the third side of the long side of the carrier to form a first conductive path and is connected to the second conductive path. a second gap is formed between the first conductive path and the second metal radiating portion, and the first conductive path extends to form a third extending portion on a fourth side of the long side of the carrier. The second metal radiating portion extends along the first conductive path and extends a third conductive path on the third side and the fourth side of the long side of the carrier, the second conductive path is on the third side of the long side of the carrier and Forming a third conductive path by four sides, the third conductive path a third gap between the third side and the fourth side of the long side of the carrier, the third conductive path extending to form a third metal radiating portion on the third side and the fourth side of the long side of the carrier, the third metal radiation The fourth extension portion is formed on the second surface and the first surface of the long side of the carrier.

Furthermore, a fourth metal radiating portion and a fifth metal radiating portion are formed on the first surface of the long side of the carrier and adjacent to the first groove and the second concave portion. A spacer is formed between the first recess and the second recess and the fourth metal radiating portion, and the fifth metal radiating portion is formed on the long side of the carrier. The surface is adjacent to the fourth metal radiating portion, the second notch is rectangular, and the fifth metal radiating portion is not in contact with the fourth metal radiating portion or the third metal radiating portion.

The first groove, the second groove, the first chamfer, the second chamfer and the third chamfer, and the second conductive path and the third conductive path are provided by the present invention , The second notch and the fourth metal radiating portion can extend the radiation path to increase the impedance matching characteristic, so that the creation can achieve the effects of multi-band, widening the bandwidth and improving the radiation benefit.

[this creation]

3‧‧‧ Carrier

31‧‧‧First groove

310‧‧‧second chamfer

32‧‧‧second groove

320‧‧‧third chamfer

33‧‧‧First chamfer

4‧‧‧ radiator

41‧‧‧First Metal Radiation Department

42‧‧‧Second Metal Radiation Department

421‧‧‧First Extension

422‧‧‧Second extension

43‧‧‧First conductive path

431‧‧‧ Third Extension

44‧‧‧Second conductive path

45‧‧‧ third conductive path

46‧‧‧ Third Metal Radiation Department

461‧‧‧ Fourth Extension

47‧‧‧Fourth Metal Radiation Department

48‧‧‧ Fifth Metal Radiation Department

51‧‧‧ first gap

52‧‧‧ second gap

53‧‧‧ third gap

54‧‧‧ interval blank area

A‧‧‧ first side

B‧‧‧ second side

C‧‧‧ third side

D‧‧‧ fourth side

6‧‧‧PCB substrate

61‧‧‧Fixed joints

62‧‧‧Signal feed end

621‧‧‧First Microstrip Metals

63‧‧‧Grounded metal surface

631‧‧‧Second Microstrip Metals

The first figure is a schematic perspective view of a preferred embodiment of the present invention.

The second drawing is a schematic perspective view of another perspective of the preferred embodiment of the present invention.

The third drawing is a schematic perspective view of a further perspective of the preferred embodiment of the present invention.

The fourth figure is a schematic diagram of the implementation of the preferred embodiment of the present invention attached to a PCB substrate.

The fifth figure is a schematic diagram of the frequency response curve of the preferred embodiment of the present invention.

In order for your review board to have a clear understanding of the content of this work, please refer to the following examples with diagrams and symbols, please refer to it.

Referring to the first, second and third figures, the present invention provides an antenna structure comprising: a carrier 3 and a radiator 4.

The carrier 3 is in the shape of a long rectangular body. The carrier 3 is provided with a first recess 31 and a second recess 32. The carrier 3 is surrounded by a plurality of first chamfers 33. The first recess 31 A plurality of second chamfers 310 are disposed around the second recess 32, and a plurality of third chamfers 320 are disposed around the second recess 32. The radiator 4 is fixedly formed on the surface of the carrier 3, so the carrier 3 is respectively There is a first face A, a second face B, a third face C and a fourth face D.

The radiator 4 is provided with a first metal radiating portion 41 and a second metal radiating portion 42. The first metal radiating portion 41 is formed on the first side A and the second side B of the long side of the carrier 3, and the second The metal radiating portion 42 is formed on the first surface A and the second surface B of the long side of the carrier 3 and is extended and formed. There is a first extension portion 421 and a second extension portion 422 formed on the first surface A of the long side of the carrier 3, and the second extension portion 422 is formed on the long side of the carrier 3 On the two sides B, the first metal radiating portion 41 is adjacent to the second metal radiating portion 42 and the second extending portion 422, and the second metal radiating portion 42 is on the second side B of the long side of the carrier 3. A first notch 51 is disposed. The second metal radiating portion 42 is formed with a first conductive path 43 extending from the third surface C of the long side of the carrier 3 and rewired to the second metal radiating portion 42. The first conductive path is A second gap 52 is formed between the fourth metal radiating portion 42 and the second conductive portion 43. The first conductive path 43 extends to form a third extending portion 431 on the fourth surface D of the long side of the carrier 3. The second metal radiating portion A second conductive path 44 is formed on the third surface C and the fourth surface D of the long side of the carrier 3 adjacent to the first conductive path 43 . The second conductive path 44 is third on the long side of the carrier 3 . A third conductive path 45 is formed on the surface C and the fourth surface D. The third conductive path 45 is provided on the third side C and the fourth side of the long side of the carrier 3. a third gap 53 of D, the third conductive path 45 extends to form a third metal radiating portion 46 on the third surface C and the fourth surface D of the long side of the carrier 3, and the third metal radiating portion 46 is on the carrier 3. The second side B and the first side A of the long side are extended to form a fourth extending portion 461. In the embodiment, the second notch 52 is rectangular, so that the first conductive path 43 is elongated.

Furthermore, there is a fourth metal radiating portion 47 and a fifth metal radiating portion 48 formed on the first surface A of the long side of the carrier 3 adjacent to the first recess 31. The second recess 32 and the second conductive path 44 are adjacent to each other. A gap blank 54 is disposed between the first recess 31 and the second recess 32 and the fourth metal radiating portion 47. The metal radiating portion 48 is formed on the fourth surface D of the long side of the carrier 3 and adjacent to the fourth metal radiating portion 47. In the present embodiment, the fourth metal radiating portion 47 and the fifth metal radiating portion 48 are both radiatively coupled to the radiator 4.

It should be noted that in this embodiment, the fifth metal radiating portion 48 is not associated with The fourth metal radiating portion 47 or the third metal radiating portion 46 is in contact with or connected.

Please refer to the fourth figure, wherein the carrier 3 can be mounted on two fixed contacts 61 of a PCB substrate 6, and the signal substrate 62 is provided with a signal feeding end 62 and the signal feeding. A first microstrip metal portion 621 extending from the end 62, and the PCB substrate 6 is also provided with a grounding metal surface 63 and a second microstrip metal portion 631 extending from the grounding metal surface 63. The first metal radiating portion 41 is electrically connected to the second microstrip metal portion 631, and the second metal radiating portion 42 is electrically connected to the first microstrip metal portion 621, and the signal feeding end 62 and the grounding metal surface 63 are electrically connected. The connection signal is fed into the line, so that the antenna can be communicated.

Please continue to refer to the fifth figure, in which the first measurement point has a frequency value of about 791 MHz and the fourth measurement point has a frequency value of about 960 MHz, so the fourth measurement point and the first measurement point. The difference is about 169MHz, and the return loss of the second measurement point in the low frequency response is about -14dB. The frequency of the low frequency response is small, and the reflection loss value is closer to -14dB and the gain is smaller. Big. Furthermore, in the medium and high frequency response, the fifth measurement point has a frequency value of about 1.71 GHz, and the ninth measurement point has a frequency value of about 2.69 GHz, so the difference between the ninth measurement point and the fifth measurement point is about It is 980MHz, and the reflection loss value between the seventh measurement point and the eighth measurement point can reach about -14dB in the medium and high frequency response, and the bandwidth is large in the medium and high frequency response. The gain is small.

In this embodiment, the problem of insufficient bandwidth in the medium and high frequency response can be solved, so that the present invention can be applied to higher frequency band communication operations and enhance its practicability. Therefore, a multi-band network provided by a telecom operator is provided. The signal, used in conjunction with this creation, can improve the coverage, signal penetration and signal capacity of network services such as 2G, 3G, 4G and even 5G signals. The reflection loss can be achieved when the medium and high frequency are operated. Operates no more than -5dB and enables future days to be met The frequency bandwidth specification of the line and the problem of lower gain in the low frequency response. Please refer to the first, second and third figures, so that the first groove 31, the second groove 32, the first chamfers 33, the second chamfers 310 are provided by the present invention. And the third chamfer 320, and the second conductive path 44, the third conductive path 45, the second notch 52, and the fourth metal radiating portion 47, which can lengthen and increase the impedance of the radiation path In order to improve the impedance matching characteristics, the creation can achieve multi-band, widening the bandwidth and improving the radiation efficiency.

The above discussion is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; therefore, changes in equivalent shapes, configurations, or combinations that do not depart from the spirit and scope of the present invention should be It is covered by the patent application scope of this creation.

3‧‧‧ Carrier

31‧‧‧First groove

310‧‧‧second chamfer

32‧‧‧second groove

320‧‧‧third chamfer

33‧‧‧First chamfer

4‧‧‧ radiator

41‧‧‧First Metal Radiation Department

42‧‧‧Second Metal Radiation Department

421‧‧‧First Extension

44‧‧‧Second conductive path

461‧‧‧ Fourth Extension

47‧‧‧Fourth Metal Radiation Department

48‧‧‧ Fifth Metal Radiation Department

54‧‧‧ interval blank area

A‧‧‧ first side

D‧‧‧ fourth side

Claims (6)

An antenna structure includes: a carrier having a first recess and a second recess, wherein the carrier is provided with a plurality of first chamfers, and the first recess is provided with a plurality of second The chamfer is provided with a plurality of third chamfers around the second groove; a radiator is fixedly formed on the surface of the carrier. The antenna structure of claim 1, wherein the carrier is in the shape of a long rectangular body. The antenna structure of claim 2, wherein the radiator is provided with a first metal radiating portion and a second metal radiating portion, wherein the first metal radiating portion is formed on the first side of the long side of the carrier and On the two sides, the second metal radiating portion is formed on the first surface and the second surface of the long side of the carrier and is extended and formed with a first extending portion and a second extending portion, and the first extending portion is formed on the carrier a first side of the long side, and the second extending portion is formed on the second side of the long side of the carrier, the first metal radiating portion is adjacent to the second metal radiating portion and the second extending portion thereof, The second metal radiating portion is provided with a first notch on the second surface of the long side of the carrier, and the second metal radiating portion is formed on the third side of the long side of the carrier to form a first conductive path and is connected to the second a metal gap, a second gap is formed between the first conductive path and the second metal radiating portion, and the first conductive path extends to form a third extending portion on the fourth side of the long side of the carrier, the second metal The radiation portion is adjacent to the first conductive path and is long on the carrier Forming a second conductive path on the third side and the fourth side of the side, the second conductive path extending to form a third conductive path on the third side and the fourth side of the long side of the carrier, the third conductive path is provided with a third conductive path a third gap between the third side and the fourth side of the long side of the carrier, the third conductive path extending to form a third metal radiating portion on the third side and the fourth side of the long side of the carrier, the third metal radiating portion Forming a fourth extension on the second side and the first side of the long side of the carrier. The antenna structure of claim 3, further comprising a fourth metal radiating portion and a fifth metal radiating portion, the fourth metal radiating portion being formed on the first side of the long side of the carrier and adjacent to Adjacent to the first groove, the second groove and the second conductive path, a gap space is disposed between the first groove and the second groove and the fourth metal radiation portion, the fifth metal radiation The portion is formed on the fourth surface of the long side of the carrier and adjacent to the fourth metal radiation portion. The antenna structure of claim 3, wherein the second notch is rectangular. The antenna structure of claim 4, wherein the fifth metal radiating portion is not in contact with the fourth metal radiating portion or the third metal radiating portion.