KR102300619B1 - Single feed antenna for integrated public network and 5G network frequency dual-band cover - Google Patents

Abstract

The present invention relates to a single feed antenna for integrated public network and 5G frequency dual-band cover. According to the present invention, the dual-band of an integrated public network and a 5G wireless communication network can be simultaneously covered with a single feed, resonant frequency and bandwidth tuning is performed using a radiating element variable, and thus the required bandwidth of each band can be satisfied. The antenna according to an embodiment of the present invention includes: a reflector, first and second radiating elements, and a feed unit. In addition, the first radiating element is formed in a planar structure having the length and width of a corresponding radiating element so as to operate in a pre-selected first frequency band. In addition, the second radiating element is connected to one end of the first radiating element and is formed in a planar structure having the length and width of a corresponding radiating element so as to operate in a pre-selected second frequency band. In addition, the feed unit is configured between the first radiating element and the reflector to feed the first radiating element and the reflector. At this time, the first radiating element and the second radiating element are configured in a U-shaped folded form vertically extending from the feed unit and then symmetrical with respect to the feed unit.

Description

Single feed antenna for integrated public network and 5G network frequency dual-band cover}

The present invention relates to a single feed antenna for an integrated public network and 5G frequency dual-band cover, which simultaneously covers dual bands of an integrated public network and a 5G wireless communication network through a single feed, and uses a variable of a radiating element to provide a resonant frequency and bandwidth It relates to a single feed antenna for an integrated public network and 5G frequency dual-band cover that can satisfy the required bandwidth of each band by tuning the

At the end of 2018, the three domestic telecommunication companies launched the world's first 5G wireless communication technology service. 5G high-speed wireless communication technology has the advantage of having data transmission speed, delay time, and high-speed mobility that are several tens of times faster than the conventional LTE wireless communication technology. However, 5G has not been verified in various communication environments at present, and optimization work is required to use high-speed wireless communication without obstacles.

On the other hand, the conventional LET has been optimized for various communication environments so far, and based on this, it is being used in public networks (disaster safety communication networks, high-speed maritime wireless communication networks, and railway integrated wireless networks, etc.) that jointly use an integrated public network frequency of 700 MHz.

However, as the 3rd Generation Partnership Project (3GPP) deals with various scenarios, a unified interworking technology method between a number of public network operating organizations that jointly use the domestic integrated public network frequency of 700 MHz has not been determined. can cause

For example, the integrated railway wireless network (LTE-R) aims to be built on all routes of general and high-speed rail by 2027. As a method to solve these problems, the integrated public network frequency band and 5G band There is a method of using each module as a different module and a method of using it as a single system.

Here, when each of the integrated public network frequency communication system module and the 5G band communication system module is used, since a communication system module and an antenna are required respectively, there is a problem in that economical and spatial loss occur greatly. Therefore, in order to solve these shortcomings, there is a need for a technology suitable for various communication environments by convergence of LET and 5G wireless communication technology, and a module and antenna capable of operating them as a single system.

Republic of Korea Patent Publication No. 10-2019-0067714 (published on June 17, 2019)

Therefore, the technical problem to be achieved by the present invention is to solve the conventional shortcomings, suitable for various communication environments by convergence of LTE and 5G wireless communication technologies, and an antenna that can be operated as a single system in LTE and 5G wireless communication environments. It is intended to provide. In addition, the purpose is to provide a single feed antenna for the integrated public network (LTE) and 5G frequency dual-band cover that satisfies a bandwidth of 10% or more compared to the resonant frequency in each band of LTE and 5G.

A single feed antenna for an integrated public network and 5G frequency dual-band cover according to an embodiment of the present invention for achieving this technical task includes a reflector, a first radiating element, a second radiating element and a feeding unit. In addition, the first radiating element is formed in a planar structure having a length and width of a corresponding radiating element to operate in a preselected first frequency band. That is, the first radiating element is configured to have a length of the first radiating element and a width of the first radiating element selected to operate in the integrated public network of the 700 MHz band.

In addition, the second radiating element is connected to one end of the first radiating element, and is formed in a planar structure having a length and width of a corresponding radiating element to operate in a preselected second frequency band. That is, the second radiating element is configured to have the length of the second radiating element and the width of the second radiating element selected to operate in the 5G wireless communication network of the 3.5 GHz band.

In addition, the feeding unit is configured between the first radiating element and the reflecting plate to feed the first radiating element and the reflecting plate. That is, the feeding unit includes a feeding point to which a feeding signal is supplied, and a first feeding line for transmitting a feeding signal supplied through the feeding point to the first radiating element. In this case, the first radiating element and the second radiating element are configured in a 'C'-shaped folded form that is symmetrical about the feeding part after vertical extension from the feeding part.

In addition, the first radiating element and the second radiating element are configured to be stacked so that the first radiating element serves as a reflector of the second radiating element. At this time, as the length of the second radiating element is relatively long, the role of the reflector of the first radiating element is weakened, so that the size of the first radiating element is relatively large compared to the size of the second radiating element so that harmonics do not occur. do.

As described above, the single feed antenna for the integrated public network and 5G frequency dual-band cover according to the present invention is suitable for various communication environments by convergence of integrated public network (LTE) and 5G wireless communication technology, and integrated public network (LTE) ) and 5G wireless communication environment, it has the effect of operating as a single system.

In addition, there is an effect that can satisfy the bandwidth required for each band for the integrated public network and the 5G wireless communication network through a single power supply structure. In addition, while optimizing the 5G wireless communication network frequency band, there is an effect that can cover the bandwidth required in a single communication system for fusion of wireless communication technology with the optimized integrated public network (LTE). In addition, there is an effect that the resonant frequency and bandwidth can be easily tuned through the width and length of the radiating element.

1 is a block diagram showing a single feed antenna for a dual-band cover according to an embodiment of the present invention.
2A and 2B are block diagrams illustrating a broadband dipole antenna according to an embodiment of the present invention.
3A and 3B are diagrams illustrating the return loss (S ₁₁ ) characteristics of FIGS. 2A and 2B .
4A and 4B are diagrams illustrating a change in frequency characteristics according to a first radiating element variable in the 700 MHz band of FIG. 1 .
5A and 5B are diagrams illustrating a change in frequency characteristics according to a second radiating element variable in the 3.5 GHz band of FIG. 1 .
6 is a view showing a single feed antenna for a dual band cover manufactured according to an embodiment of the present invention.
7A, 7B, and 7C are diagrams illustrating characteristics of an antenna measured using FIG. 6 .

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, terms such as “…unit”, “…group”, “…module”, etc. described in the specification mean a unit that processes at least one function or operation, which is implemented by hardware or software or a combination of hardware and software. can be

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings.

Like reference numerals in each figure indicate like elements.

1 is a configuration diagram showing a single feed antenna 10 for a dual band cover according to an embodiment of the present invention, FIGS. 2A and 2B are a configuration showing a wideband dipole antenna according to an embodiment of the present invention It is also

That is, FIG. 2A is a configuration diagram illustrating a first wideband dipole antenna 20 for performing integrated public network frequency communication of a 700 MHz band, and FIG. 2B is a second diagram for a 5G wireless communication network of a 3.5 GHz band. It is a block diagram showing the wideband dipole antenna (Wideband dipole antenna) (30).

Due to the recent development of 5G communication technology, an antenna that can cover both LTE and 5G bands is required.

In general, the antenna required in a single system of the integrated public network frequency communication system module and the 5G band communication system module is suitable for an antenna having a dual band of a single feeding method. am.

However, since such an antenna does not satisfy the required bandwidth of more than 10% for each resonant frequency band (integrated public network: more than 10% bandwidth in 700 to 770 MHz, 5G: more than 10% bandwidth in 3.42 to 3.7 GHz) It is not suitable as a dual-band single-feed antenna for integrated public networks and 5G wireless communication networks.

Therefore, the single feed antenna 10 for the integrated public network and 5G frequency dual band cover according to an embodiment of the present invention applies a dipole antenna to change the resonance frequency and bandwidth of the antenna according to the diameter of the radiating element. want to be able to That is, the single feed antenna 10 for the integrated public network and 5G frequency dual band cover according to an embodiment of the present invention provides a single feed dipole antenna that simultaneously satisfies the dual bands of the integrated public network and the 5G wireless communication network.

For example, FIGS. 2A and 2B show a planar dipole antenna implemented to satisfy the required bandwidth by converting the radiating element of the dipole antenna from a conductor rod structure to a flat conductor structure according to an embodiment of the present invention.

That is, in the first broadband dipole antenna 20 resonating in the 700 MHz band of FIG. 2A , the size of the radiating element 101 is 146 mm (0.34λ) x 22 mm (0.05λ), and the height of the feed line 321 is 65 mm (0.15). λ), and the second broadband dipole antenna 30 resonating in the 3.5GHz band of FIG. 2b has a size of the radiating element 201 of 55mm (0.63λ) x 12.5mm (0.25λ), and the height of the feed line 322 may be 30 mm (0.35λ). At this time, the size of the reflective plate 400 in FIGS. 2A and 2B is 250 mm x 250 mm x 1 mm under the same conditions.

In general, a basic dipole antenna has a bandwidth of 5 to 8%. Therefore, in the present invention, the width of the radiating element can be easily varied for bandwidth expansion by implementing the radiating element as a flat conductor plate, and the radiating element can be manufactured to be lightweight.

In particular, as shown in FIG. 1 , the first radiating element 100 operating as a single 700 MHz antenna has a planar structure that can effectively serve as a reflector for the second radiating element 200 operating as a 3.5 GHz antenna. Therefore, the single feed antenna 10 for the integrated public network and 5G frequency dual-band cover according to an embodiment of the present invention applies a dipole antenna having a radiating element having a planar structure of dimensions, so that the bandwidth of the resonant frequency can be expanded by 10% or more. .

3A and 3B are diagrams illustrating the return loss (S ₁₁ ) characteristics of FIGS. 2A and 2B . That is, Figure 3a is a diagram showing the simulated S ₁₁ characteristics for the 700MHz band plate element dipole antenna 20 of Figure 2a, Figure 3b is simulated S ₁₁ characteristics for the 3.5GHz band plate element dipole antenna 30 of Figure 2b It is a drawing showing

3a and 3b, the flat panel element dipole antenna according to an embodiment of the present invention has a -10dB bandwidth of 90MHz (12.8%) in a 700MHz band, and a -10dB bandwidth of 403MHz (11.5%) in a 3.5GHz band. %) can be obtained.

As described above, as the width of the radiating element increases, it can be confirmed that the bandwidth of the dipole antenna becomes wider, and through this, it can be confirmed that a single feed antenna having a bandwidth of 10% or more can be implemented.

The single feed antenna 10 for the integrated public network and 5G frequency dual-band cover according to an embodiment of the present invention is 700 MHz by modifying the structure of the single planar dipole antenna of FIGS. 2A and 2B, respectively, as shown in FIG. 1 . It is possible to implement a single feed antenna 10 for a dual band cover in which the antenna of the band serves as a reflector of the 3.5 GHz band antenna.

That is, the single feed antenna 10 for the integrated public network and 5G frequency dual-band cover according to an embodiment of the present invention includes a reflector 400, a first radiating element 100, a second radiating element 200, and a feeding unit ( 300) may be included.

In addition, the first radiating element 100 is formed in a planar structure having the length and width of the corresponding radiating element to operate in a preselected first frequency band. That is, the first radiating element 100 may be configured to have the length G1 of the first radiating element and the width W1 of the first radiating element selected to operate in the integrated public network of the 700 MHz band.

In addition, the second radiating element 200 is connected to one end of the first radiating element 100, and is formed in a planar structure having a length and width of a corresponding radiating element to operate in a preselected second frequency band. That is, the second radiating element 200 may be configured to have a length (G2) of the second radiating element and a width (W2) of the second radiating element selected to operate in the 5G wireless communication network of the 3.5 GHz band.

In addition, the feeding unit 300 may be configured between the first radiating element 100 and the reflective plate 400 to feed the first radiating element 100 and the reflective plate 400 . That is, the feeding unit 300 includes a feeding point 310 to which a feeding signal is supplied, and a first feeding line 320 for transmitting a feeding signal supplied through the feeding point 310 to the first radiating element 100 . may include

In addition, the single feed antenna 10 for the integrated public network and 5G frequency dual band cover according to an embodiment of the present invention is a 'C' shape after vertically extending the radiating element from the feeding unit 300 of the 700 MHz antenna as shown in FIG. 1 . It is formed in a folded form. That is, the first radiating element 100 of the 700 MHz band and the second radiating element 200 of the 3.5 GHz band are configured to form a 'C' shape symmetrical about the power feeding unit 300 .

Therefore, the required bandwidth of each band is satisfied by changing the width of the conductor plate, and the separate feeding at 3.5 GHz and the feeding of the 700 MHz antenna without a balun can be equally applied. In addition, the impedance can be matched through the spacing and width of the two parallel transmission lines in the power feeding unit 300 , and the omnidirectional radiation pattern can be adjusted by adjusting the height from the 700 MHz radiator.

That is, the single feed antenna 10 for the integrated public network and 5G frequency dual band cover according to an embodiment of the present invention adjusts the spacing and width of the first feed line 320 or the second feed line 330 to reduce the impedance. can match. In addition, the forward directional radiation pattern may be adjusted by adjusting the height of the second feed line 330 positioned between the first radiating element 100 and the second radiating element 200 .

In addition, in the integrated public network and the single feed antenna 10 for the 5G frequency dual band cover according to an embodiment of the present invention, the antennas satisfying the respective bands interact with each other, so the variable of each radiating element (700 MHz band of the first radiating element) It is necessary to check the characteristic change of the antenna according to the length (G1) and the width (W1), the length (G2) and the width (W2)) of the second radiating element in the 3.5 GHz band and the characteristic change of the antenna according to the size of the reflector 400 have.

For example, according to an embodiment of the present invention, as shown in FIG. 1 , the length G1 and the width W1 of the first radiating element are set as variables, and the antenna characteristics according to the change of the first radiating element 100 in the 700 MHz band can confirm.

4a and 4b are diagrams showing the frequency characteristic change according to the parameters of the first radiating element 110 (the length (G1) of the first radiating element, and the width (W1) of the first radiating element) in the 700 MHz band of FIG. am. _{That is, Figure 4a is a view showing the S 11} simulation characteristics of the 700MHz band radiation element parameters according to the length (G1) of the first radiating element, Figure 4b is the 700MHz band radiation element parameters according to the width (W1) of the first radiating element It is a diagram showing the simulation characteristics of S _11.

In this case, according to an embodiment of the present invention, the length G2 of the second radiating element in the 3.5 GHz band may be set to 50 mm, and the width W2 of the second radiating element may be set to 12.5 mm. In addition, according to an embodiment of the present invention, as shown in FIG. 4a, the length G1 of the first radiating element is changed to 140mm, 150mm, 160mm, 170mm and 180mm while the 700MHz band radiating element according to the length G1 of the first radiating element It can represent the S ₁₁ simulation characteristic of the parameter.

In addition, according to an embodiment of the present invention, as shown in FIG. 4b, the width W1 of the first radiating element is 15mm, 18mm, 21mm, 24mm and 27mm, while the 700MHz band radiating element according to the width W1 of the first radiating element. It can represent the S ₁₁ simulation characteristic of the parameter.

As a result of the simulation characteristics, as shown in FIG. 4a , as the length G1 of the variable first radiating element increases, the resonance frequency of the 700 MHz band falls, and it can be confirmed that the resonance frequency of the 3.5 GHz band does not change significantly. .

In addition, as shown in FIG. 4b , as the width W1 of the variable first radiating element is widened, the bandwidth in the 700 MHz band tends to be widened, and it can be confirmed that the bandwidth of the 3.5 GHz band does not change significantly.

Through this, the desired resonant frequency and bandwidth can be satisfied by adjusting the length (G1) of the first radiating element and the width (W1) of the first radiating element in order to adjust the resonance frequency and bandwidth of the 700 MHz band, which is a low frequency. It can be confirmed that the influence on the resonant frequency and bandwidth of the 3.5 GHz band according to the change of the first radiating element length G1 and the first radiating element width W1 of the band is independent.

Therefore, the single feed antenna 10 for the integrated public network and 5G frequency dual-band cover according to an embodiment of the present invention uses the width of the first radiating element 100 and the second radiating element 200 to each frequency corresponding to each other. The bandwidth of the band may be adjusted, and the resonant frequency of each corresponding frequency band may be adjusted using the lengths of the first radiating element 100 and the second radiating element 200 .

5a and 5b show the frequency characteristic change according to the variable (length G2 of the second radiating element and the width W2 of the second radiating element) of the second radiating element 200 in the 3.5 GHz band of FIG. It is a drawing. _{That is, Figure 5a is a view showing the S 11} simulation characteristics of the 3.5GHz band radiation element parameters according to the length (G2) of the second radiating element, Figure 5b is 3.5GHz band radiation according to the width (W2) of the second radiating element ₁₁ is a view showing a simulation S parameter characteristics of the element.

In this case, according to an embodiment of the present invention, the length G1 of the first radiating element in the 700 MHz band may be set to 160 mm, and the width W1 of the first radiating element may be set to 22 mm. In addition, according to an embodiment of the present invention, as shown in FIG. 5a , the length G2 of the second radiating element changes to 30mm, 40mm, 50mm, 60mm and 70mm, and the 3.5GHz band radiation according to the length G2 of the second radiating element _{S 11} simulation characteristics of element parameters can be represented.

In addition, according to an embodiment of the present invention, the width W2 of the second radiating element is 8mm, 10mm, 12mm, 14mm and 16mm as shown in FIG. 5b according to an embodiment of the present invention, and the 3.5GHz band radiation according to the width W2 of the second radiating element _{S 11} simulation characteristics of element parameters can be represented.

As a result of the simulation characteristics, as shown in FIG. 5A , it can be confirmed that the frequency shift and impedance matching in the 3.5 GHz band change according to the change in the variable second radiating element length G2. In addition, as the length G2 of the variable second radiating element increases, the role of the reflector of the 700 MHz band first radiating element 100 is weakened, and it can be seen that harmonics are generated.

Therefore, as the length G2 of the second radiating element 200 is relatively long, the role of the reflector of the first radiating element 100 is weakened, so that the size of the first radiating element 100 is reduced to prevent harmonics from occurring. It is preferable to make the device 200 relatively large compared to the size of the device 200 .

In addition, it can be seen that the bandwidth in the 3.5 GHz band is changed according to the width W2 of the variable second radiating element as shown in FIG. 5B, but there is no change in the 700 MHz band.

Through this, the second radiating element 200 of the 3.5 GHz band is affected by the length (G1) and the width (W1) of the first radiating element 100 of the 700 MHz band located below the first radiation of the 700 MHz band. It can be seen that the device 100 serves as a reflector of the second radiating device 200 in the 3.5 GHz band.

That is, the single feed antenna 10 for the integrated public network and 5G frequency dual-band cover according to an embodiment of the present invention is formed relatively large compared to the size of the 3.5GHz band second radiating element 200 in the 700MHz band first radiation. The element 100 is present as a non-powered element of the second radiating element 200 and serves as a reflector.

6 is a diagram illustrating a single feed antenna 10 for a dual-band cover manufactured according to an embodiment of the present invention, and FIGS. 7A, 7B and 7C are diagrams illustrating characteristics of the antenna measured using FIG. 6 . . That is, FIG. 6 is a view of an actual object manufactured to measure the characteristics of the single feed antenna 10 for the integrated public network and 5G frequency dual-band cover according to an embodiment of the present invention.

The single feed antenna 10 for the dual band cover shown in FIG. 6 was manufactured based on the data through the variables of the 700 MHz band and 3.5 GHz band radiating elements, and the reflector 400 size of 250 mm x 250 mm x 1 mm, and 170 mm x 22 mm It consists of an overall size of the antenna of x 92.5mm.

That is, as shown in FIG. 6 , the length G1 and the width W1 of the first radiating element are 170 mm and 22 mm, respectively, and the length G2 and the width W2 of the second radiating element are 49.5 mm and 12.5 mm, respectively. In addition, the thickness of the reflector 400 and the height of the antenna including the first feed line 320 and the second feed line 330 are 92.5 mm.

In addition, FIGS. 7A, 7B and 7C show the characteristics of the single feed antenna 10 for the dual-band cover shown in FIG. 6 . _{That is, FIG. 7A is a view showing the S 11} characteristics of the single feed antenna 10 for the dual band cover of FIG. 6 , and FIG. 7B is the E-plane in the 700 MHz band for the single feed antenna 10 for the dual band cover. and H-plane radiation pattern characteristics, and FIG. 7c is a diagram illustrating E-plane and H-plane radiation pattern characteristics in the 3.5 GHz band for a single feed antenna 10 for a dual-band cover.

As shown in Fig. 7a, the single feed antenna 10 for a dual band cover according to an embodiment of the present invention exhibits a bandwidth of 14.8% with a bandwidth of 104 MHz in a 700 MHz band -10 dB, and a bandwidth in a 3.5 GHz band -10 dB. It represents 18.8% of bandwidth at 660MHz.

In addition, as shown in FIG. 7B , in the 700 MHz band, the gain is 8.46 dBi, and the beamwidth is 55° in the E-plane and 81° in the H-plane. In addition, as shown in FIG. 7c , it can be seen that in the 3.5 GHz band, a gain of 6.14 dBi and a beam width of 79° E-plane and 49° H-plane are shown.

In addition, it can be confirmed that both the E-plane and H-plane patterns of the 700 MHz band and the 3.5 GHz band form an omnidirectional radiation pattern, and exhibit suitable characteristics required by the single feed antenna 10 for the dual band cover of the present invention. .

As such, in the integrated public network and the single feed antenna 10 for the 5G frequency dual-band cover according to the embodiment of the present invention, the radiating element of the antenna consisting of the first radiating element 100 and the second radiating element 200 is 'c'. By being configured in a 'shape-folded shape, the double-stacked antenna resonates in the dual band, and the E-plane and H-plane radiation patterns can form an omnidirectional radiation pattern.

In addition, it is possible to implement a dual band of an integrated public network and 5G frequency by using a single radiating element, and there is an effect that the resonant frequency and bandwidth can be easily tuned through the width and length of the radiating element.

In addition, the single feed antenna 10 for the integrated public network and 5G frequency dual-band cover according to the embodiment of the present invention can satisfy the bandwidth required for each band for the integrated public network and the 5G wireless communication network through one feeding structure. have. In addition, while optimizing the frequency band of the 5G wireless communication network, an antenna for a dual band cover with a single feeding structure that can cover the bandwidth required in a single communication system to converge wireless communication technology with the optimized integrated public network (LTE) can provide

In addition, it has the effect of providing a single feed antenna for the integrated public network (LTE) and 5G frequency dual-band cover that satisfies a bandwidth of 10% or more compared to the resonance frequency in each band of the integrated public network (LTE) and 5G wireless communication network. .

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be easily changed by those of ordinary skill in the art to which the present invention pertains from the embodiments of the present invention and equivalent. It includes all changes to the extent recognized as such.

10: single feed antenna for dual band cover
20: first broadband dipole antenna
30: second broadband dipole antenna
100, 101: first radiating element 200, 201: second radiating element
300, 301, 302: feeding unit 310, 311, 312: feeding point
320, 321, 322: first feed line 330: second feed line
400: reflector
G1: Length of the first radiating element W1: Width of the first radiating element
G2: Length of the second radiating element W2: Width of the second radiating element

Claims (6)

In a single feed antenna for a dual band cover that is composed of a dipole antenna and operates in a dual band of a single feed method,
a reflector;
a first radiating element formed in a planar structure having a length and width of a corresponding radiating element to operate in a preselected first frequency band;
a second radiating element connected to one end of the first radiating element and formed in a planar structure having a length and width of a corresponding radiating element to operate in a preselected second frequency band;
a first feed line configured between the first radiating element and the reflector to transmit a feed signal supplied through a feed point to the first radiating element; and
and a second feed line positioned between the first radiating element and the second radiating element to transmit a feed signal supplied through a feed point to the second radiating element,
The first radiating element and the second radiating element are configured to be stacked so that the first radiating element serves as a reflector of the second radiating element, and is configured in a 'C' shape symmetrical about the second feed line. Single-feed antenna for dual-band cover.
delete According to claim 1,
The first radiating element and the second radiating element are characterized in that the bandwidth of the corresponding frequency band is adjusted using the width of each radiating element, and the resonant frequency of the corresponding frequency band is adjusted using the length of each radiating element. single feed antenna for dual band cover.
According to claim 1,
The first frequency band is an integrated public network frequency band, and the second frequency band is a single feed antenna for a dual band cover, characterized in that the 5G wireless communication network frequency band.
delete According to claim 1,
As the length of the second radiating element becomes relatively long, the role of the reflector of the first radiating element is weakened, so that the size of the first radiating element is relatively large compared to the size of the second radiating element so that harmonics do not occur. Single feed antenna for dual band cover featuring.

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