KR100748505B1 - Broadband antenna and electronic equipment comprising it - Google Patents

Abstract

The present invention relates to an electronic device having a wideband antenna and a wideband antenna, comprising: a ground plane having a finite plane; An antenna body of the conductor; A feed line for electrically interconnecting the antenna body and the ground plane; A ground pin for grounding the antenna body to a ground plane; The antenna body includes at least one slot and at least one slit connected from the slot to one end of the antenna body to be opened, and the antenna body is bent into a substantially rectangular parallelepiped shape so that the hollow portion is formed inside the antenna body. By being formed, it can be miniaturized, can be embedded in an electronic device, is easy to manufacture, and by having at least one slot, multiple resonant frequencies can be generated, and by providing at least one slit, the frequency bandwidth can be improved. By bending the antenna body into a substantially rectangular parallelepiped shape, it is possible to simultaneously obtain the advantages of the planar inverse F antenna suitable for the high frequency band and the advantage of the planar inverse F antenna suitable for the low frequency band, and by providing a stub, Resonant frequency, return loss and frequency bandwidth Provided are a wideband antenna that can be tuned and an electronic device having the wideband antenna.

Broadband Antennas, Mobile Terminals, Laptops, MP3 Players

Description

BROADBAND ANTENNA AND ELECTRONIC EQUIPMENT COMPRISING IT}

1 is a perspective view showing the configuration of a broadband antenna according to an embodiment of the present invention.

FIG. 2 is a plan view showing an unfolded state of FIG. 1A; FIG.

3 is a graph showing the return loss of the broadband antenna in the case of FIG.

4 is a plan view illustrating a state in which the thickness of the first slot is increased in A of FIG. 1;

5 is a graph showing the return loss of the broadband antenna in the case of FIG.

FIG. 6 is a plan view illustrating a state in which the thickness of the second slot is increased in A of FIG. 1; FIG.

FIG. 7 is a graph showing the return loss of the wideband antenna in the case of FIG.

8 is a plan view illustrating a state in which the length of the third slot is reduced in A of FIG. 1;

9 is a graph showing the return loss of the broadband antenna in the case of FIG.

10 is a plan view illustrating a state in which a stub is removed from A of FIG. 1.

FIG. 11 is a graph showing the return loss of the broadband antenna in the case of FIG.

12 is a plan view of a numerical value according to the manufacturing example of A of FIG. 1;

13, 14, and 15 illustrate a configuration of an electronic device having a broadband antenna according to another embodiment of the present invention.

   13 is a perspective view of a mobile terminal.

   14 is a perspective view of a notebook.

   15 is a perspective view of an MP3 player.

FIG. 16 is an enlarged fragmentary sectional view taken along the line AA ′ of FIGS. 13, 14, and 15.

Explanation of symbols on the main parts of the drawings

100: broadband antenna 110: ground plane

120: antenna body 121: first slit

122: second slit 123: first slot

124: second slot 125: third slot

130: power supply line 140: ground pin

150: stub 200: mobile terminal

211 Case 212 Circuit Board

300: Notebook 400: MP3 Player

The present specification relates to a wideband antenna and an electronic device having the wideband antenna.

Communication with mobile terminals such as mobile phones, PDAs, car navigation systems, and portable computers such as laptops, electronic organizers, electronic dictionaries, or music players such as MP3 players, MD players, radio, audio, etc. The electronic device with built-in means receives a radio wave and plays it through the electronic device, or transmits information generated from the electronic device in the form of a radio wave.

However, the superiority of the function of such an electronic device is of course important, and the importance of the design of the electronic device to meet the aesthetic needs of consumers is also highlighted.

In particular, the recent trend is that in order to meet the aesthetic needs of consumers who require a slim design, it is possible to reduce the size of the electronic device by embedding an antenna, which has been protruded outwardly of the electronic device, inside the electronic device. In addition, they try to beautify their external aesthetics.

In-tenna, such as the built-in antenna, is not only highly efficient to be suitable for the structure of a small electronic device, but is also a very important issue of how to reduce its size.

The rectangular planar inverted antenna (PIFA) with half the path of radiated current can be embedded inside the electronics, so it can be designed to meet the taste of consumers who want a sophisticated design. have. In addition, since the antenna is protected inside the case of the electronic device, it has the advantage of being safe from external shocks.

The present invention provides a wideband antenna which can be miniaturized, can be embedded in an electronic device, improve bandwidth, generate multiple resonances, and is easy to manufacture, and an electronic device having the wideband antenna. The purpose. In particular, the present invention provides a broadband antenna capable of greatly improving the bandwidth of the narrowband, which has been pointed out as a disadvantage of the conventional built-in antenna, greatly improving the bandwidth while maintaining miniaturization, and providing an electronic device having the broadband antenna. For that purpose.

In order to achieve the object as described above, the present invention comprises a ground plane having a finite plane; An antenna body of the conductor; A feed line for electrically interconnecting the antenna body and the ground plane; A ground pin for grounding the antenna body to a ground plane; The antenna body includes at least one slot and at least one slit connected from the slot to one end of the antenna body to be opened, and the antenna body is bent into a substantially rectangular parallelepiped shape so that the hollow portion is formed inside the antenna body. It provides a broadband antenna formed.

This is achieved by bending an antenna body having at least one slot and at least one slit open into a substantially rectangular parallelepiped shape and having a feeding line and a grounding pin, thereby interacting with the top surface of the approximately rectangular parallelepiped and the feeding line and the grounding pin. Due to the characteristics of the planar inverted F antenna and at the same time, it is possible to obtain the characteristics of the monopole antenna due to the side of the substantially rectangular parallelepiped shape. This is to form a wide bandwidth to wide bandwidth.

Here, the at least one slit, as one end of the antenna body, may include a slit that is connected to open between the feed line and the ground pin.

This is to facilitate the formation of a circuit transmission line formed by the current supplied through the feed line circulating the antenna body and then to the ground plane through the ground pin, and to improve the characteristics of the frequency band. .

In addition, an insulating dielectric may be inserted into the hollow part, which is intended to enable miniaturization by reducing the volume of the broadband antenna by inserting a dielectric having a higher dielectric constant than that of air.

In addition, the feed line may be made of a helical structure of the conductor, which is to realize a wide band, which is an advantage of the helical antenna, through the conductor of the helical structure.

On the other hand, the present invention is a ground plane having a finite plane; An antenna body having a first slot and a second slot spaced apart from each other on the plate, and having a third slot extending from any edge of the second slot and having a thickness smaller than that of the second slot; A feed line for electrically interconnecting the antenna body and the ground plane; A ground pin for grounding the antenna body to a ground plane; The first slot and the second slot are formed in the first slot and the second slot are connected to the one end of the antenna body, the first slit and the second slit, respectively, and the antenna body has a direction perpendicular to the feed line and the ground pin Accordingly, it is bent at least one time to provide a broadband antenna having a hollow formed therein.

This is to form a slot and a slit in a specific pattern as described above, so that multiple resonant frequencies are generated and the frequency bandwidth can be greatly improved. In particular, to optimize the transmission and reception of clean radio waves in the appropriate frequency band as needed.

On the other hand, the present invention is a ground plane having a finite plane; An antenna body having a first slot and a second slot spaced apart from each other on the plate, and having a third slot extending from any edge of the second slot and having a thickness smaller than that of the second slot; A feed line for electrically interconnecting the antenna body and the ground plane; A grounding pin for grounding the antenna body to a ground plane; A stub protruding from approximately an intermediate portion of the feed line; The first slot and the second slot are formed in the first slot and the second slot are connected to the one end of the antenna body, the first slit and the second slit, respectively, and the antenna body has a direction perpendicular to the feed line and the ground pin Accordingly, it is bent at least one time to provide a broadband antenna having a hollow formed therein.

By forming the slots and slits in a specific pattern as described above, multiple resonant frequencies are generated and the frequency bandwidth can be greatly improved, and by forming a stub, the frequency band and characteristics can be tuned as necessary. For sake.

On the other hand, the present invention is to provide an electronic device having a wideband antenna that is configured to incorporate the above-described wideband antenna, and transmits and receives radio waves through the wideband antenna.

The electronic device may be a portable terminal such as a mobile phone, a PDA, a car navigation system, a portable computer such as a laptop, an electronic notebook, an electronic dictionary, or a music player such as an MP3 player, an MD player, a radio, an audio, or the like. Likewise, electronic devices incorporating communication means are generically referred to.

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

However, in the following description of the present invention, a description of a known function or configuration will be omitted to clarify the gist of the present invention.

1 is a perspective view showing the configuration of a broadband antenna according to an embodiment of the present invention, FIG. 2 is a plan view showing an unfolded state of FIG. 1A, and FIG. 3 is a reflection loss of the broadband antenna in FIG. 4 is a plan view illustrating a state in which the thickness of the first slot is increased in A of FIG. 1, FIG. 5 is a graph illustrating the reflection loss of the broadband antenna in FIG. 4, and FIG. 1 is a plan view illustrating a state in which the thickness of the second slot is increased, FIG. 7 is a graph illustrating the reflection loss of the wideband antenna in FIG. 6, and FIG. 8 is a view of the third slot in A of FIG. 1. 9 is a plan view illustrating a return loss of the broadband antenna in FIG. 8, FIG. 10 is a plan view illustrating a stub removed from A of FIG. 1, and FIG. Reflective hand of broadband antenna in case of Figure 10 Is shown a graph, Figure 12 is a plan view showing the base value according to the preparation of A of Figure 1 a.

1 and 2, the broadband antenna 100 according to an embodiment of the present invention, the ground plane 110, the antenna body 120, the ground plane 110 and the antenna body 120 ), A power supply line 130 electrically interconnecting each other, a ground pin 140 to ground the antenna body 120 to the ground plane 110, and a stub 150 protruding from an approximately middle portion of the power supply line 130. It consists of

Here, the ground plane 110 has a finite plane and consists of a conductor capable of passing current. The ground plane 110 supplies a current to the antenna body 120 through a power supply line 130, which will be described later, and receives a current from the antenna body 120 through the ground pin 140 to thereby antenna body 120 Allow a circuit transmission line to be generated. The ground plane 110 preferably has an area larger than that of the antenna body 120, which will be described later. The ground plane 110 may be configured to be electrically connected to a circuit board of an electronic device. 110 may be configured as the circuit board itself.

The antenna body 120 is made of a conductor, it may radiate or receive radio waves. In particular, although the antenna body 120 is shown in a rectangular plate shape in Figs. 1 and 2, the shape is not limited as long as it can radiate or receive radio waves. However, the length ① of the antenna body 120 is preferably designed in consideration of the fact that the resonant frequency corresponding to a quarter wavelength of the radio wave due to the length.

The antenna body 120 is bent at right angles along the bending line L, as shown in FIG. 2, and has an approximately rectangular parallelepiped shape, as shown in FIG. 1. Accordingly, the hollow portion 120a is formed therein.

As such, when bent into a substantially rectangular parallelepiped shape, the top surface 120b of the antenna body 120 may be installed in parallel with the ground plane 110, thereby exhibiting characteristics of a flat type inverted-f antenna, and the antenna body 120. Both sides 120c may show characteristics of the unipolar antenna. Therefore, the advantages of the flat type inverted antenna and the unipolar antenna can be at the same time. This can be confirmed through FIG. 3. As shown in FIG. 3, it can be seen that the low frequency resonant frequency L1 and the high frequency resonant frequencies H1 and H2 are simultaneously generated.

In addition, by bending the antenna body 120 as described above, it is possible to reduce the volume of the broadband antenna 100, thereby further miniaturizing the electronic device having the broadband antenna 100.

In addition, the at least one slot and the slit formed in the antenna body 120, at least one slot formed in the top surface 120b of the antenna body 120, respectively, after the antenna body 120 is bent into a substantially rectangular parallelepiped shape. And the slits and at least one slot and the slits formed on both side surfaces 120c of the antenna body 120, respectively. As described later, according to the function of the slot and the slit, it is possible to generate multiple resonances (H1, H2) in the high frequency band, improve the high frequency bandwidth (BWH), and to improve the frequency characteristics of the low frequency band. .

As shown in FIGS. 1 and 2, at least one slit 121, 122 and slots 123, 124, and 125 are formed in the antenna body 120 in a specific pattern.

Here, at least one of the slits 121 and 122 formed in the antenna body 120 generally increases the length of the short-circuit transmission circuit generated by the feed line 130 and the ground pin 140. It affects the impedance and frequency band of the antenna. In particular, as shown in FIG. 2, the first slit 121 and the second slot 124 connected to each other from the first slot 123 to the power supply line 130 and the ground pin 140 are opened. In the case of forming the second slit 122 connected to the one end of the antenna body 120 to open, it affects the resistance impedance to improve the frequency bandwidth.

This can be confirmed through FIG. 3. As shown in FIG. 3, the low frequency bandwidth (BWL) is about 0.85 GHz to 1.05 GHz and the high frequency bandwidth (BWH) is about 1.8 GHz to 3 based on a return loss of -6 dB. GHz. This is a significant improvement considering that the bandwidth of the conventional general planar inverted-f antenna (-6 dB reference) was only 1.9 GHz to 2.1 GHz.

This bandwidth is the main frequency band of 3G mobile communication (3G), which has recently become a major social issue, around 2 GHz, and when watching satellite DMB broadcasting using a mobile terminal, the band is L-band (1 to 2 GHz). ) Or S-band (2 to 4 GHz), when using the broadband antenna 100 according to an embodiment of the present invention provides an advantage that can transmit and receive clean radio waves in the bandwidth.

In particular, by bending the antenna body 120 having at least one slit 121 and 122 into a substantially rectangular parallelepiped shape, the top surface 120b of the antenna body 120, the feed line 130, and the ground pin 140 It has the characteristics of a planar inverted F antenna, and has the characteristics of a unipolar antenna by both sides (120c) of the antenna body 120, in this case at least one slit (121, 122) by bending the antenna body ( It is formed over the uppermost surface 120b and the both side surfaces 120c of the 120. Therefore, at least one slit formed on the top surface 120b of the antenna body 120 improves the bandwidth BWH of the high frequency band, and at least one slit formed on both side surfaces 120c of the antenna body 120 is a low frequency band. It will improve the bandwidth (BWL) of the.

Meanwhile, at least one slot 123, 124, or 125 generates multiple resonant frequencies in the wideband antenna 100. In particular, as shown in detail in FIG. 2, the first slot 123 and the second slot 124 formed to be spaced apart from each other, and further extend from one edge of the second slot 124 and are formed of the second slot 124. When the third slot 125 having a thickness smaller than the size is formed, the dual resonance frequencies H1 and H2 are generated in the high frequency band and one resonance frequency L1 is generated in the low frequency band.

This can be confirmed through FIG. 3. As shown in FIG. 3, two resonance frequencies of 1.95 GHz (H1) and 2.65 GHz (H2) are generated in the high frequency band.

In addition, the reflection loss and the impedance matching at the resonance frequency may be adjusted by appropriately adjusting the size of the at least one slot 123 to 125.

In order to confirm this, the case in which the size of the first slot 123 to the third slot 125 is modified will be described in contrast with the case in which the size is not changed.

First, a case where the thickness t1 of the first slot 123 is increased will be described.

4 is a case where the thickness t1 of the first slot 123 is increased, and FIG. 5 is a graph illustrating the return loss (RL) according to the present invention.

Before increasing the first slot thickness After increasing the first slot thickness  RL (low frequency resonant frequency)  -12 dB  -38 dB  RL (high frequency first resonant frequency)  -21 dB  -14 dB  RL (High Frequency Secondary Resonant Frequency)  -18 dB  -13 dB

As shown in FIG. 5 and Table 1, when the thickness t1 of the first slot 123 is increased, each resonance frequency does not change, but it can be seen that the reflection loss at each resonance frequency varies. The return loss of the low frequency primary resonant frequency is greatly reduced from -12 dB to -38 dB, while the return loss of the high frequency primary resonant frequency is -21 dB to -14 dB and the return loss of the high frequency secondary resonant frequency is- It will increase from 18 dB to -13 dB.

In addition, the bandwidth of the return loss -6dB reference is also slightly changed.

This is, by bending the antenna body 120 in a substantially rectangular parallelepiped shape, the characteristics of the planar inverse F antenna and the characteristics of the unipolar antenna are simultaneously taken. When the thickness of the first slot 123 is adjusted, This is because it affects the return loss and the bandwidth of the low frequency band.

Therefore, by appropriately adjusting the thickness t1 of the first slot 123, it is possible to design a broadband antenna as needed.

FIG. 6 is a case where the thickness t2 of the second slot 124 is increased, and FIG. 7 is a graph showing the reflection loss accordingly.

Before increasing the second slot thickness After increasing the second slot thickness  RL (low frequency resonant frequency)  -12 dB  -11 dB  RL (high frequency first resonant frequency)  -21 dB  -22.5 dB  RL (High Frequency Secondary Resonant Frequency)  -18 dB  -22.5 dB

As shown in FIG. 7 and Table 2, when the thickness t2 of the second slot 124 is increased, each resonance frequency does not change, but it can be seen that the reflection loss at each resonance frequency varies. The reflection loss of the low frequency primary resonant frequency is slightly reduced from -12 dB to -11 dB, while the reflection loss of the high frequency primary resonant frequency is -21 dB to -22.5 dB, and the reflection loss of the high frequency secondary resonant frequency is -18. It will increase from dB to -22.5 dB.

In addition, the bandwidth of the return loss -6dB reference is also slightly changed.

As described above, the antenna body 120 is bent in a substantially rectangular parallelepiped shape, thereby simultaneously taking the characteristics of the flat plate antenna and the unipolar antenna, and thus the thickness t2 of the second slot 124. ) Will affect the return loss and bandwidth of the high and low frequency bands.

Therefore, by appropriately adjusting the thickness t2 of the second slot 124, it is possible to design a broadband antenna as needed.

FIG. 8 is a case where the length l1 of the third slot 125 is reduced, and FIG. 9 is a graph showing the reflection loss accordingly.

Before reducing third slot length After reducing the third slot length  RL (low frequency resonant frequency)  -12 dB  -13.5 dB  RL (high frequency first resonant frequency)  -21 dB  -22 dB  RL (High Frequency Secondary Resonant Frequency)  -18 dB  -19.5 dB

As shown in FIG. 9 and Table 3, when the length l1 of the third slot 125 is increased, the resonant frequency does not change, but the reflection loss at each resonant frequency varies. The reflection loss of the low frequency primary resonant frequency slightly increases from -12 dB to -13.5 dB, while the reflection loss of the high frequency primary resonant frequency is -21 dB to -22 dB, and the reflection loss of the high frequency secondary resonant frequency is- It will increase from 18 dB to -19.5 dB.

In addition, the bandwidth of the return loss -6dB reference is also slightly changed.

When the antenna body 120 is bent in a substantially rectangular parallelepiped shape, the characteristics of the planar inverse F antenna and the characteristics of the unipolar antenna are simultaneously taken, so that when the length l1 of the third slot 125 is adjusted, This is because it affects the return loss and bandwidth of the high frequency band and the low frequency band.

Therefore, by appropriately adjusting the length l1 of the third slot 125, it is possible to design a wideband antenna as needed.

As described above, by appropriately adjusting the length, size, position, width, number, etc. of the at least one slot 123 to 125 formed in the antenna body 120, it is possible to properly design the broadband antenna as needed. .

On the other hand, the presence of the feed line 130 and the ground pin 140 is one of the characteristics of the flat inverted F antenna, the current supplied to the feed line 130 circulates the antenna body 120 and the ground pin 140 By entering the ground plane 110 through, one circuit transmission line is formed. By the formation of such a circuit transmission line, it is possible to transmit and receive radio waves through the antenna body 120. In addition, impedance matching may be facilitated by appropriately adjusting the width and length of the feed line 130 and the ground pin 140.

In addition, the feed line 130 and the ground pin 140 are connected to one end of the antenna body 120. Such a shape serves to facilitate the formation of a circuit transmission line, but the scope of the present invention is not limited to the above shape.

In addition, the feed line 130 may be made of a conductor having a helical structure. When the feed line is made of a helical structure in this way, an advantage of the helical antenna may be obtained. That is, not only can transmit and receive clean radio waves in a wide frequency band, but also has a helical structure, while reducing the length and transmitting and receiving characteristics of the radio wave does not deteriorate.

On the other hand, the broadband antenna 100 according to an embodiment of the present invention may be further provided with a stub 150 protruding from approximately the middle of the feed line 130. The presence of such stub 150 generally affects resonant frequency, frequency bandwidth, return loss, and the like.

FIG. 10 is a diagram illustrating a state in which the stub 150 is removed, and FIG. 11 illustrates the reflection loss accordingly, which is as follows.

Before removing the stub After removing stub  Low frequency resonant frequency  0.9 GHz  1 GHz  Low frequency return loss  RL: -12 dB  RL: -18 dB  Low frequency bandwidth  0.85-1.05 GHz  0.85 to 1 GHz  High frequency resonant frequency  1st: 1.95 GHz 2nd: 2.65 GHz  Primary: 2.1 GHz Secondary: 3.3 GHz   High frequency return loss  RL (1st): -21 dB RL (2nd): -18 dB  RL (1st): -4 dB RL (2nd): -9 dB  High frequency bandwidth  1.8 to 3 GHz  3.1 to 3.4 GHz

As shown in FIG. 11 and Table 4, when the stub 150 is removed, the low frequency resonant frequency shifts slightly to 1 GHz, the reflection loss at the low frequency resonant frequency is lowered to -18 dB, and the low frequency bandwidth is 0.85 to 1 Will be reduced to GHz. In addition, the high frequency resonance frequency moves to 2.1 GHz and 3.3 GHz, and the reflection loss at each high frequency resonance frequency is greatly increased to -4 dB and -9 dB, and the high frequency bandwidth is also greatly reduced to 3.1 to 3.4 GHz.

Therefore, the stub 150 may be provided to adjust a resonant frequency, frequency bandwidth, return loss, and the like, and to design a wideband antenna as necessary.

On the other hand, the hollow portion 120a may be configured by inserting an insulating dielectric. In this case, there is an advantage that the size of the hollow portion 120a can be reduced by inserting a dielectric having a dielectric constant greater than that of air compared to the case where only air exists in the hollow portion 120a. This is a great advantage for downsizing the size of the electronic device.

As shown in FIG. 2, the wideband antenna 100 according to the exemplary embodiment of the present invention has the slits 121 and 122, the slots 123 to 125, and the power supply line 130 as shown in FIG. 2. After cutting the shape of the ground pin 140, the stub 150, and the like, the antenna body 120 can be easily manufactured by bending the antenna body 120 at right angles along the bending line L as shown in FIG.

A manufacturing embodiment of actually manufacturing the wideband antenna 100 is shown in FIG. 12, and the wideband antenna 100 manufactured at the numerical value shown in FIG. 12 is bent, and as shown in FIG. With a size of 12 mm (②) × 7 mm (③), it was possible to manufacture a broadband antenna 100 that can be embedded in a very slim mobile terminal.

Meanwhile, an electronic device having a broadband antenna according to another embodiment of the present invention will be described in detail. However, parts and components that perform the same function will be denoted by the same reference numerals and redundant description thereof will be omitted.

13, 14, and 15 illustrate a configuration of an electronic device having a broadband antenna according to another embodiment of the present invention. FIG. 13 is a perspective view of a portable terminal, FIG. 14 is a perspective view of a notebook, and FIG. 15. Is a perspective view of an MP3 player, and FIG. 16 is an enlarged partial cross-sectional view taken along the AA ′ cutting line of FIGS. 13, 14, and 15.

13, 14, and 15 show an electronic device having a broadband antenna according to another embodiment of the present invention, a portable terminal, a notebook computer, an MP3 player, but a mobile terminal such as a mobile phone, a PDA, a car navigation system, Electronic devices that use antennas to transmit and receive radio waves by having built-in communication means, such as portable computers such as laptops, electronic notebooks, electronic dictionaries, or music players such as MP3 players, MD players, radios, audio, etc. All devices will be said to belong to the scope of the present invention.

As shown in FIGS. 13 and 16, the portable terminal 200 having the broadband antenna according to another embodiment of the present invention is slidably coupled to the terminal body 210 and the front surface of the terminal body 210. The slide unit 220 is configured.

Although FIG. 13 illustrates a slide type portable terminal including a terminal body 210 and a slide unit 220 sliding in front of the terminal body, the terminal body as well as a foldable portable terminal rotatably coupled to the upper end of the terminal body are illustrated in FIG. The integrated portable terminal in which the slide unit (or the folder unit) is integrally formed will also be within the scope of the present invention.

Although the portable terminal 200 is illustrated as a portable telephone in FIG. 13, the portable terminal 200 may be applied mutatis mutandis to a PDA or a vehicle-mounted navigation.

The terminal body 210 may include a case 211 forming an enclosure of the terminal body 210, and a circuit board 212 embedded in the case 211 to electrically operate and control the mobile terminal 200. And a broadband antenna 100 embedded in the case 211 and electrically connected to the circuit board 212.

In this case, the ground plane 110 of the broadband antenna 100 may be electrically connected to the circuit board 212 by electrical connection means (eg, wire bonding), but as shown in FIG. 110 may be the circuit board 212 itself. That is, the antenna body 120 is installed on the circuit board 212, and the power supply line 130 connecting the circuit board 212 and the antenna body 120 and the antenna body 120 are connected to the circuit board 212. It may also be configured as a ground pin 140 to ground. As such, when the circuit board 212 is replaced without the separate ground plane 110, there is an advantage in that the spatial utilization thereof is widened.

The slide unit 220 is provided with a display unit 221 formed on the front surface of the slide unit 220 to display information.

In the case of the mobile terminal 200 having the broadband antenna according to another exemplary embodiment of the present invention, the broadband antenna 100 is configured to be embedded in the terminal body 210, but the broadband antenna 100 may be connected to the terminal body ( In addition to the inside of the 210, the slide unit 220 may be embedded in the inside of the portable terminal 200.

On the other hand, as shown in Figure 14 and 16, the notebook 300 having a broadband antenna according to another embodiment of the present invention, the notebook main body 310, and the upper end of the notebook main body 310 to be rotatable The display unit 320 is coupled.

The notebook 300 refers to a portable portable computer, and may be applied to an electronic notebook, an electronic dictionary, and the like.

The notebook body 310 may include a case 211 forming an enclosure of the notebook body 310, a circuit board 212 embedded in the case 211 to electrically operate and control the notebook 300. In addition, a broadband antenna 100 is built in the case 211 and electrically connected to the circuit board 212.

In this case, as shown in FIG. 16, the ground plane 110 of the broadband antenna 100 may be electrically connected to the circuit board 212 by electrical connection means (eg, wire bonding), but the ground plane As described above, the 110 may be the circuit board 212 itself.

The display unit 320 displays information transmitted by the circuit board 212. The circuit board 212 may be embedded in the notebook body 310, but may be embedded in the display unit 320. Of course you can.

Meanwhile, as illustrated in FIGS. 15 and 16, the MP3 player 400 having the broadband antenna according to another embodiment of the present invention includes an MP3 player body 410 and an MP3 player body 410. The display unit 420 is formed on the front of the display to display information, the input unit 430 is formed on one side of the MP3 player body 410 and connected to one side of the MP3 player body 410, the user is connected It is composed of an earphone 440 that can listen to music by plugging into the ear.

MP3 player (MP3) 400 refers to a player capable of playing MP3 (MP3: MPEG Audio Layer-3) files, and can receive radio waves as well as receive MP3 files. Therefore, the present invention can be applied to a music player such as an MD (Mini-Disk) player having a radio wave reception function, a radio, an audio, and the like.

The MP3 player main body 400 includes a case 211 forming an enclosure, a circuit board 212 built in the case 211 to electrically operate and control the MP3 player 400, and a case ( 211 and a broadband antenna 100 that is electrically connected to the circuit board 212.

In this case, as shown in FIG. 16, the ground plane 110 of the broadband antenna 100 may be electrically connected to the circuit board 212 by electrical connection means (eg, wire bonding), but the ground plane As described above, the 110 may be the circuit board 212 itself.

As illustrated in FIG. 16, a broadband antenna electrically connected to a circuit board 212 may be formed in an electronic device 200, 300, or 400 having a broadband antenna according to another embodiment of the present invention. Since 100 is built in, the radio waves can be transmitted and received through the antenna body 120 of the broadband antenna 100.

In addition, since the broadband antenna 100 according to the embodiment of the present invention is provided, as described above, it is possible to transmit and receive clean and accurate radio waves in a wide frequency band including a low frequency band and a high frequency band. That is, the advantages of the flat type inverted F antenna suitable for the high frequency band and the advantages of the monopole antenna suitable for the low frequency band can be accommodated as they are.

In the above described exemplary embodiments of the present invention by way of example, the scope of the present invention is not limited to the specific embodiments as described above, the scope of the invention by those skilled in the art to the claims It can be changed as appropriate within the scope described.

As described above, the present invention provides a wideband antenna that can be miniaturized, can be embedded in an electronic device, and is easy to manufacture, and an electronic device having the wideband antenna.

In addition, by providing at least one slot, multiple resonance frequencies may occur, and by providing at least one slit, there is provided a broadband antenna and an electronic device having the broadband antenna, the frequency bandwidth of which can be improved.

In addition, the antenna body is bent into a substantially rectangular parallelepiped shape, so that both the wideband antenna and the wideband antenna, which can simultaneously obtain the advantages of the planar inverse F antenna suitable for the high frequency band and the advantages of the inverted antenna F for the low frequency band, are provided. Provide the appliance.

In addition, the provision of a stub provides a wideband antenna capable of appropriately tuning the resonant frequency, return loss, and frequency bandwidth, and an electronic device having the wideband antenna.

However, the present invention is not established only when all of the above effects are exerted.

Claims (20)

A ground plane having a finite plane; An antenna body of the conductor; A feed line for electrically interconnecting said antenna body and said ground plane; A ground pin for grounding the antenna body to the ground plane; Including, The antenna body is formed with at least one slot, and at least one slit connected to open from the slot to one end of the antenna body, The antenna body is parallel to each other and is bent into a rectangular parallelepiped along at least two different bending lines to form a hollow portion therein. The method of claim 1, The antenna body is a broadband antenna, characterized in that consisting of a rectangular plate shape. The method of claim 1, The at least one slit is, One end of the antenna body, the broadband antenna, characterized in that it comprises a slit open connected between the power supply line and the ground pin. The method of claim 1, Broadband antenna, characterized in that the dielectric is inserted into the hollow portion. The method of claim 1, The feed line is a broadband antenna, characterized in that consisting of a conductor of the helical structure. The method of claim 1, And a stub protruding from the feed line. A ground plane having a finite plane; An antenna body having a first slot and a second slot spaced apart from each other on the plate, and having a third slot extending from an arbitrary edge of the second slot and having a thickness smaller than that of the second slot; A feed line for electrically interconnecting said antenna body and said ground plane; A ground pin for grounding the antenna body to the ground plane; Including, The first slot and the second slot are formed with a first slit and a second slit connected to open to one end of the antenna body, respectively, And the antenna body is bent at least once along a direction orthogonal to the feed line and the ground pin to form a hollow portion therein. The method of claim 7, wherein The antenna antenna is characterized in that the rectangular flat plate shape. The method of claim 7, wherein The antenna body is a broadband antenna, characterized in that the bent in a rectangular shape having a hollow formed therein. The method of claim 7, wherein The first slit is one end of the antenna body, the broadband antenna, characterized in that connected to open between the feed line and the ground pin. The method of claim 7, wherein Broadband antenna, characterized in that the dielectric is inserted into the hollow portion. The method of claim 7, wherein The feed line is a broadband antenna, characterized in that consisting of a conductor of the helical structure. The method of claim 7, wherein And a stub protruding from the feed line. A ground plane having a finite plane; An antenna body having a first slot and a second slot spaced apart from each other on the plate, and having a third slot extending from an arbitrary edge of the second slot and having a thickness smaller than that of the second slot; A feed line for electrically interconnecting said antenna body and said ground plane; A ground pin for grounding the antenna body to the ground plane; A stub protruding from the feed line; Including, The first slot and the second slot are formed with a first slit and a second slit connected to open to one end of the antenna body, respectively, And the antenna body is bent at least once along a direction orthogonal to the feed line and the ground pin to form a hollow portion therein. The method of claim 14, The antenna antenna is characterized in that the rectangular flat plate shape. The method of claim 14, The antenna body is a broadband antenna, characterized in that the bent in a rectangular shape having a hollow formed therein. The method of claim 14, The first slit is one end of the antenna body, the broadband antenna, characterized in that connected to open between the feed line and the ground pin. The method of claim 14, Broadband antenna, characterized in that the dielectric is inserted into the hollow portion. 19. A broadband antenna according to any one of claims 1 to 18; It is built in Electronic device having a broadband antenna for transmitting and receiving radio waves through the broadband antenna. The method of claim 19, The electronic device having a broadband antenna, characterized in that any one of a portable terminal, a notebook or MP3 player.

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