KR20200112579A - Antenna apparatus - Google Patents

Abstract

According to one embodiment of the present invention, provided is an antenna device capable of improving antenna performance or easily performing miniaturization while providing transmission/reception means for a plurality of different frequency bands. The antenna device comprises: a feed line; a ground plane surrounding a portion of the feed line; a feed via electrically connected to the feed line; a first endfire antenna pattern disposed in front of the ground plane and electrically connected to the feed via; a second endfire antenna pattern electrically connected to the feed line and disposed further ahead of the first endfire antenna pattern; and a third endfire antenna pattern electrically connected to the feed via and disposed in front of the first endfire antenna pattern so that at least a portion thereof overlaps a second endfire antenna.

Description

Antenna apparatus

The present invention relates to an antenna device.

The data traffic of mobile communication is increasing rapidly every year. Active technology development is underway to support such breakthrough data in real time in wireless networks. For example, contentization of IoT (Internet of Thing)-based data, AR (Augmented Reality), VR (Virtual Reality), live VR/AR combined with SNS, autonomous driving, Sync View, user's viewpoint using micro camera Applications such as real-time video transmission) require communication (e.g., 5G communication, mmWave communication, etc.) that supports sending and receiving large amounts of data.

Therefore, recently, millimeter wave (mmWave) communication including fifth generation (5G) communication has been actively researched, and research for commercialization/standardization of an antenna device that smoothly implements this is also actively being conducted.

Since RF signals in high frequency bands (eg, 24GHz, 28GHz, 36GHz, 39GHz, 60GHz, etc.) are easily absorbed and lead to loss in the process of being transmitted, the quality of communication can drop rapidly. Therefore, the antenna for high frequency band communication requires a different technical approach from the existing antenna technology, and separates for securing antenna gain, integration of antenna and RFIC, and securing Effective Isotropic Radiated Power (EIRP). Special technology development such as power amplifier may be required.

Registered Patent Publication No. 10-0911938

The present invention provides an antenna device capable of improving antenna performance or easily miniaturizing while providing transmission/reception means for a plurality of different frequency bands.

An antenna device according to an embodiment of the present invention includes: a feed line; A ground plane surrounding a portion of the feed line; A feed via electrically connected to the feed line; A first endfire antenna pattern disposed in front of the ground plane and electrically connected to the feed via; A second endfire antenna pattern electrically connected to the feed line and disposed in front of the first endfire antenna pattern; And a third endfire antenna pattern electrically connected to the feed via and disposed in front of the first endfire antenna pattern so that at least a portion thereof overlaps the second endfire antenna. It may include.

An antenna device according to an embodiment of the present invention includes: a feed line; A ground plane surrounding a portion of the feed line; A feed via electrically connected to the feed line; And a first endfire antenna pattern disposed in front of the ground plane and electrically connected to the feed via. A second endfire antenna pattern electrically connected to the feed line and disposed in front of the first endfire antenna pattern; Including, wherein the first endfire antenna pattern includes a first dipole pattern and a second dipole pattern extending obliquely rearward to the first dipole pattern, and at least a portion of the second endfire antenna pattern is the It may have a shape extending diagonally forward with respect to the first dipole pattern.

The antenna device according to an embodiment of the present invention provides transmission/reception means for a plurality of different frequency bands while improving antenna performance (eg, gain, bandwidth, directivity, transmission/reception rate, etc.) or easily miniaturized. I can.

1A and 1B are perspective views illustrating an antenna device according to an embodiment of the present invention.
1C is a side view showing an antenna device according to an embodiment of the present invention.
1D is a plan view showing an antenna device according to an embodiment of the present invention.
2A and 2B are plan views illustrating an arrangement of an antenna device according to an embodiment of the present invention.
3A to 3F are plan views illustrating various forms of a third endfire antenna pattern of an antenna device according to an embodiment of the present invention.
4A to 4C are plan views illustrating various structures of an antenna device according to an embodiment of the present invention.
5A to 5D are plan views illustrating a plurality of ground planes of a connecting member of an antenna device according to an embodiment of the present invention in z direction.
6A and 6B are diagrams illustrating a lower structure of a connection member that may be included in the antenna device shown in FIGS. 1A to 5D.
7A and 7B are plan views illustrating an arrangement of an antenna device in an electronic device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The detailed description of the present invention to be described later refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in detail sufficient to enable a person skilled in the art to practice the present invention. It is to be understood that the various embodiments of the present invention are different from each other, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description to be described below is not intended to be taken in a limiting sense, and the scope of the present invention is limited only by the appended claims, along with all scopes equivalent to those claimed by the claims. Like reference numerals in the drawings refer to the same or similar functions over several aspects.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to enable those of ordinary skill in the art to easily implement the present invention.

1A and 1B are perspective views showing an antenna device according to an embodiment of the present invention, FIG. 1C is a side view showing an antenna device according to an embodiment of the present invention, and FIG. 1D is It is a plan view showing the antenna device.

1A, 1B, 1C, and 1D, an antenna device according to an embodiment of the present invention includes a first endfire antenna pattern 120a and a second endfire antenna pattern 123a. It is possible to provide a transmission/reception means for a plurality of different frequency bands. The first endfire antenna pattern 120a may include at least one of a first dipole pattern 121a and a second dipole pattern 122a.

The first and second endfire antenna patterns 120a and 123a are electrically connected to one end of the feed line 110a, and receive a radio frequency (RF) signal from the feed line 110a and forward (eg, y direction). The RF signal transmitted through or received from the front may be provided to the feed line 110a.

The feed line 110a may be electrically connected to the first wiring via 231a in the connection member 200a, and the first wiring via 231a is an IC (Integrated Circuit) disposed at the lower side (for example, in the -z direction). Can be electrically connected to The IC may provide or receive RF signals to the first and second endfire antenna patterns 120a and 123a through the first wiring via 231a and the feed line 110a.

The feed line 110a may have a structure in which a transmission path of a first RF signal in a first frequency band (eg, 28 GHz) and a transmission path of a second RF signal in a second frequency band (eg, 39 GHz) are shared. Accordingly, since the number of feed lines 110a can be reduced, the size occupied by the RF signal transmission path in the connection member 200a can be reduced, and the overall size of the antenna device according to an embodiment of the present invention can be reduced. I can.

For example, the feed line 110a may be composed of first and second feed lines. The first and second feed lines may be electrically connected to one and the other poles of the first and second endfire antenna patterns 120a and 123a, respectively.

The first and second endfire antenna patterns 120a and 123a resonate with respect to the first and/or second frequency bands, respectively, to receive energy corresponding to the first and second RF signals intensively and radiate to the outside. have.

The connection member 200a reflects the first and second RF signals radiated toward the connection member 200a among the first and second RF signals radiated by the first and second endfire antenna patterns 120a and 123a ( reflect), the radiation patterns of the first and second endfire antenna patterns 120a and 123a can be concentrated forward (eg, in the y direction). Accordingly, the gain of the first and second endfire antenna patterns 120a and 123a may be improved.

The resonance of the first and second endfire antenna patterns 120a and 123a is based on a resonance frequency according to a combination of inductance and capacitance corresponding to the first and second endfire antenna patterns 120a and 123a and surrounding structures. Can occur.

Each of the first and second endfire antenna patterns 120a and 123a has an intrinsic resonance frequency according to an intrinsic element (eg, shape, size, thickness, separation distance, dielectric constant of an insulating layer, etc.), an adjacent pattern, and/or Alternatively, it may have a bandwidth based on an extrinsic resonance frequency due to electromagnetic coupling with a via.

Since the first and second dipole patterns 121a and 122a are smaller than the second endfire antenna pattern 123a, the inductance according to the intrinsic element of the second endfire antenna pattern 123a and/ inductance and/capacitance smaller than the capacitance Since it may have, it may resonate predominantly with respect to the second RF signal having a shorter wavelength among the first and second RF signals.

The second endfire antenna pattern 123a may resonate predominantly with respect to the first RF signal, and may affect the resonance of the first RF signal of the first dipole pattern 121a.

The connection member 200a may reflect the first and second RF signals, and the first and second RF signals reflected by the connection member 200a are the first and second endfire antenna patterns 120a and 123a. It may act as constructive interference and/or destructive interference with respect to the first and second RF signals directed forward (eg, y-direction).

Here, the proportion of constructive interference among the total interference of the first and second RF signals is the separation distance from the connection member 200a of the first and second endfire antenna patterns 120a and 123a is a specific separation distance (eg, RF It can be increased if it is more than 1/4 times the wavelength of the signal.

Since the second endfire antenna pattern 123a is larger than the first and second dipole patterns 121a and 122a, the separation distance of the second endfire antenna pattern 123a with respect to the connection member 200a is the first and second It may be longer than that of the dipole patterns 121a and 122a. Accordingly, the proportion of constructive interference of each of the first and second endfire antenna patterns 120a and 123a may be increased, and the gain of each of the first and second endfire antenna patterns 120a and 123a may be improved. .

At least a portion of the first endfire antenna pattern 120a may have a shape extending diagonally with respect to the rear direction. For example, the second dipole pattern 122a may have a shape that extends diagonally behind the first dipole pattern 121a.

Accordingly, the 2-2 resonant frequency of the second dipole pattern 122a may be higher than the 2-1 resonant frequency of the first dipole pattern 121a, and the first and second dipole patterns 121a and 122a respectively The radiation patterns of may be formed to increase the proportion of constructive interference with respect to each other's radiation patterns.

Accordingly, the electromagnetic compatibility of the first and second dipole patterns 121a and 122a with each other may be increased, and the first endfire antenna pattern 120a has a resonant frequency of 2-1 and a resonance frequency of 2-2. Depending on the combination, it can have a wide bandwidth.

The feed via 111a may electrically connect between the first end fire antenna pattern 120a and the feed line 110a. That is, the first end fire antenna pattern 120a may be disposed under the feed line 110a due to the feed via 111a.

The -z direction vector component of the second RF signal of the first endfire antenna pattern 120a may be added to the second RF signal according to the provision of a path in the -z direction in the feed via 111a. Accordingly, the radiation pattern of the first endfire antenna pattern 120a may be inclined in the -z direction from the front (eg, y direction).

In addition, the second endfire antenna pattern 123a may be positioned at a different height from the first endfire antenna pattern 120a due to the feed via 111a.

Accordingly, the first endfire antenna pattern 120a may not be blocked by the second endfire antenna pattern 123a while concentrating the radiation pattern forward (for example, in the y direction), thus corresponding to the second RF signal. The deterioration of the gain can be suppressed.

1A, 1B, 1C, and 1D, an antenna device according to an embodiment of the present invention may further include a third endfire antenna pattern 124.

The third endfire antenna pattern 124 may be electrically connected to the feed via 111a.

For example, one end and the other end of the third endfire antenna pattern 124 may be electrically connected to the first and second feed lines of the feed via 111a, respectively. That is, the third endfire antenna pattern 124 may be a closed type, and is of a type different from the open type of the first and second endfire antenna patterns 120a and 123a. Since the overlapping structure of the open structure and the closed structure increases the concentration of electromagnetic coupling, the concentration of electromagnetic coupling of the second and third endfire antenna patterns 123a and 124 can be improved, and the second and second 3 The gain for the second RF signal of the endfire antenna patterns 123a and 124 may be improved.

Since the third end fire antenna pattern 124 may be electrically connected to the feed line 110a and/or the feed via 111a, it may have a unique resonant frequency, and the inherent resonant frequency is first and/or When corresponding to the frequency of the second RF signal, a radiation pattern for the first and/or second RF signal may be formed.

The intrinsic element of the third endfire antenna pattern 124 may be designed to have a 1-2th resonance frequency adjacent to the 1-1th resonance frequency of the second endfire antenna pattern 123a.

Accordingly, the second and third endfire antenna patterns 123a and 124 may have a wide bandwidth according to a combination of the 1-1th resonance frequency and the 1-2nd resonance frequency. The second and third endfire antenna patterns 123a and 124 may be designed to have a higher gain according to a narrowband design of the 1-1 resonant frequency and the 1-2 resonant frequency.

The third endfire antenna pattern 124 may be positioned at a different height from the second endfire antenna pattern 123a due to the feed via 111a.

At least a portion of the third endfire antenna pattern 124 may be disposed to overlap the second endfire antenna pattern 123a when viewed in the vertical direction (eg, z direction).

Accordingly, the radiation patterns of the second and third endfire antenna patterns 123a and 124 may be formed to increase the proportion of constructive interference with respect to each other's radiation patterns. That is, electromagnetic compatibility of the second and third endfire antenna patterns 123a and 124 with each other may be improved.

One end and the other end of the third endfire antenna pattern 124 may be concentrated on the feed via 111a. Here, the third endfire antenna pattern 124 may have a shape extending in a direction different from the first and second dipole patterns 121a and 122a.

Accordingly, a phenomenon in which the third endfire antenna pattern 124 electromagnetically blocks the first and second dipole patterns 121a and 122a in the front (eg, y direction) can be suppressed, and thus, one implementation of the present invention. The overall gain for a plurality of frequency bands of the antenna device according to the example may be improved.

At least a portion of the third endfire antenna pattern 124 may have an arc shape. Accordingly, the third endfire antenna pattern 124 reduces the influence on the gain of the first and second dipole patterns 121a and 122a while improving electromagnetic compatibility with the second endfire antenna pattern 123a. I can.

That is, the arc of the third endfire antenna pattern 124 may act as an electromagnetic surface through which a surface current corresponding to the first RF signal flows, and the electromagnetic surface is as if the second endfire antenna pattern 123a ) Can act as if the area through which the surface current flows is expanded. Accordingly, the gain for the first RF signal of the antenna device according to an embodiment of the present invention can be greatly improved.

In addition, since the third endfire antenna pattern 124 overlaps the second endfire antenna pattern 123a, the third endfire antenna pattern 124 substantially reduces the increase in size of the antenna device according to an embodiment of the present invention. Does not cause Accordingly, the antenna device according to an embodiment of the present invention may have improved antenna performance (eg, gain, bandwidth, directivity) compared to size.

For example, the third endfire antenna pattern 124 may include a plurality of arc patterns 124a, 124b, 124c, 124d, each having an arc shape, and a plurality of call patterns 124a, 124b, 124c, 124d ) May include a plurality of connection patterns 114a, 114b, 114c, 114d, and 114e electrically connecting them.

When the frequency of the RF signal is high, the entire structure of the plurality of arc patterns 124a, 124b, 124c, 124d and the plurality of linking patterns 114a, 114b, 114c, 114d, 114e, and the gaps therebetween is an electromagnetic plane ( electromagnetic plane).

Accordingly, the width of the electromagnetic coupling range between the second and third endfire antenna patterns 123a and 124 may be greater than the total width of the plurality of arc patterns 124a, 124b, 124c, and 124d. Accordingly, a gain of the second and third endfire antenna patterns 123a and 124 compared to the size of the first RF signal of the device may be further improved.

For example, the width of each of the plurality of arc patterns 124a, 124b, 124c, and 124d may be shorter than the width of the second endfire antenna pattern 123a. Accordingly, the coupling concentration per unit area due to the overlap of the second and third endfire antenna patterns 123a and 124 may be further increased, and the gain of the second and third endfire antenna patterns 123a and 124 is It can be further improved according to the electromagnetic coupling.

For example, the width of each of the plurality of linking patterns 114a, 114b, 114c, 114d, and 114e may be shorter than the width of the feed line 110a. Accordingly, since the ratio of the surface current between the second and third endfire antenna patterns 123a and 124 can be further optimized, the gain of the second and third endfire antenna patterns 123a and 124 is due to electromagnetic coupling. It can be further improved accordingly.

For example, the separation distance at the center of each of the plurality of arc patterns 124a, 124b, 124c, 124d may be longer than the separation distance at one end of each of the plurality of arc patterns 124a, 124b, 124c, 124d. Accordingly, since the third endfire antenna pattern 124 generally has a structure that protrudes further forward (eg, y direction), the radiation pattern of the third endfire antenna pattern 124 is further forward (eg, y direction). Direction), and the gain of the third endfire antenna pattern 124 may be further improved.

Meanwhile, the second endfire antenna pattern 123a may have a shape extending in the x direction from the center portion and bent in a forward diagonal line. Accordingly, the radiation pattern of the second endfire antenna pattern 123a may have an open protruding structure that is further concentrated forward (eg, in the y direction). The open protrusion structure may have high electromagnetic compatibility with the closed protrusion structure of the third endfire antenna pattern 124. Accordingly, the second and third endfire antenna patterns 123a and 124 may have a higher gain for the first RF signal.

In addition, the width of the second endfire antenna pattern 123a may be longer than the width of the first endfire antenna pattern 120a. Accordingly, since the first RF signal transmitted from the feed line 110a can be better pulled to the second and third endfire antenna patterns 123a and 124, the electromagnetic isolation between the first and second RF signals is It can be further improved.

Meanwhile, referring to FIGS. 1A to 1D, the connection member 200a may have a structure in which a plurality of ground planes 201a, 202a, 203a, 204a, 205a, 206a are stacked. The number of the plurality of ground planes 201a, 202a, 203a, 204a, 205a, 206a is not particularly limited.

At least one of the plurality of ground planes 201a, 202a, 203a, 204a, 205a, 206a surrounds a portion of the feed line 110a, and the first, second and third endfire antenna patterns 120a, 123a, 124 Can be located in the rear.

For example, the plurality of ground planes 201a, 202a, 203a, 204a, 205a, 206a may have a protruding region P4 and a recessed region C1, C2, C3, and C4.

A portion of the second dipole pattern 122a of the first endfire antenna pattern 120a may be located in the depression regions C1, C2, C3, and C4.

That is, the first dipole pattern 121a among the first endfire antenna patterns 120a has a shape adaptive to the structure of the second and third endfire antenna patterns 123a and 124, and the second dipole pattern 122a ) May have a shape adaptive to at least one structure among a plurality of ground planes 201a, 202a, 203a, 204a, 205a, 206a.

That is, the first endfire antenna pattern 120a improves the electromagnetic isolation between the first and second RF signals, while improving the reflection efficiency for the second RF signal, thereby further improving the gain for the second RF signal. I can.

2A and 2B are plan views illustrating an arrangement of an antenna device according to an embodiment of the present invention.

2 and 2B, a plurality of antenna devices 101e, 102e, 103e, and 104e according to an embodiment of the present invention may be arranged in the x direction, and each radiation pattern may be concentrated in the y direction. .

In addition, the plurality of patch antenna patterns 1110a may be arranged in the y direction from the upper side of the connecting member 200a (eg, the z direction), and the radiation patterns may be concentrated in the z direction, respectively. For example, the plurality of upper coupling patterns 1115a may be spaced apart from each other above the plurality of patch antenna patterns 1110a.

Meanwhile, the connection member 200a may include a plurality of shielding vias 245a.

3A to 3F are plan views illustrating various forms of a third endfire antenna pattern of an antenna device according to an embodiment of the present invention.

Referring to FIG. 3A, the third endfire antenna pattern may include one arc pattern 124a and two connection patterns 114a and 114e.

Referring to FIG. 3B, the third endfire antenna pattern may include two call patterns 124a and 124b and two linking patterns 114a and 114e.

Referring to FIG. 3C, the third endfire antenna pattern may include three call patterns 124a, 124b, and 124c and two linking patterns 114a and 114e.

Referring to FIG. 3D, the third endfire antenna pattern may include four call patterns 124a, 124b, 124c, and 124d and two linking patterns 114a and 114e.

Referring to FIG. 3E, the third endfire antenna pattern may include four call patterns 124a, 124b, 124c, and 124d and three linking patterns 114a, 114c, and 114e.

Referring to FIG. 3F, the third endfire antenna pattern may be composed of four call patterns 124a, 124b, 124c, and 124d and five linking patterns 114a, 114b, 114c, 114d, and 114e.

The structure of the plurality of arc patterns 124a, 124b, 124c, 124d of the third endfire antenna pattern and the plurality of linking patterns 114a, 114b, 114c, 114d, 114e is a first frequency band corresponding to the first RF signal The bandwidth and/or gain of (eg, 24 GHz to 30 GHz) may have a relatively greater influence than the second frequency band (eg, 38 GHz to 42 GHz) corresponding to the second RF signal.

4A to 4C are plan views illustrating various structures of an antenna device according to an embodiment of the present invention.

Referring to FIG. 4A, the antenna device according to an embodiment of the present invention includes first and second dipole patterns 121a and 122a and a second endfire antenna pattern 123a, and includes a third endfire antenna pattern. May not include. Accordingly, the antenna device may further improve a gain for the second RF signal while improving electromagnetic isolation between the first and second RF signals.

Referring to FIG. 4B, the antenna device according to an embodiment of the present invention includes first and second dipole patterns 121a and 122a and a third endfire antenna pattern 124, and includes a second endfire antenna pattern. May not include.

That is, at least a portion of the third endfire antenna pattern 124 may have a shape extending diagonally forward with respect to the first dipole pattern 121a. Accordingly, the antenna device may further improve a gain for the second RF signal while improving electromagnetic isolation between the first and second RF signals.

Referring to FIG. 4C, the connection member 200b may have a shape that does not include a protruding region and a recessed region, and the second dipole pattern 122a may be omitted. That is, the first endfire antenna may include only one of the first and second dipole patterns according to the design.

5A to 5D are plan views illustrating a plurality of ground planes of a connecting member of an antenna device according to an embodiment of the present invention in z direction.

5A to 5D show only the first endfire antenna pattern 120a among the above-described first, second, and third endfire antenna patterns, and the remainder of the first, second, and third endfire antenna patterns have been sufficiently described and thus not shown.

Referring to FIG. 5A, the first ground plane 224a may be disposed under the plurality of patch antenna patterns 1110a, and may have a plurality of through holes through which the plurality of second feed vias 1120a pass. , May include a first protruding region P4.

The plurality of patch antenna patterns 1110a may remotely transmit and/or receive RF signals in the z direction. Accordingly, the antenna device according to an embodiment of the present invention not only transmits and receives an RF signal in a horizontal direction through a dipole antenna pattern, but also transmits and receives an RF signal in a vertical direction through a plurality of patch antenna patterns 1110a, thereby transmitting an RF signal in all directions. Can send and receive remotely.

Referring to FIG. 5B, the second ground plane 225a includes a first wiring 212a electrically connecting the feed line 110a and the first wiring via 231a, and the second feed via 1120a. They may be disposed to surround each of the second wires 214a electrically connecting the second wire vias 232a, and may be connected to the fifth blocking pattern 135a.

In addition, the plurality of shielding vias 245a may be arranged along the front boundary of the stepped cavity CS and electrically connect between the second ground plane 225a and the third ground plane 222a.

Referring to FIG. 5C, the third ground plane 222a may include a through hole through which the first and second wiring vias 231a and 232a pass, and may be connected to the second blocking pattern 132a. The plurality of shielding vias 245a may be arranged along a front boundary of the stepped cavity CS and electrically connect the third ground plane 222a and the fourth ground plane 221a. The via pattern 112a may be electrically connected to the dipole antenna pattern.

Referring to FIG. 5D, the fourth ground plane 221a may have a shape that is recessed two or more times to the rear of the first endfire antenna pattern 120a, and the first and second wiring vias 231a and 232a are It may include a through hole passing through, and may be connected to the first blocking pattern 131a. The plurality of shielding vias 245a may be arranged along the front boundary line of the stepped cavity CS. The first endfire antenna pattern 120a may be disposed in front of the stepped cavity CS (eg, in the x direction).

6A and 6B are diagrams illustrating a lower structure of a connection member that may be included in the antenna device shown in FIGS. 1A to 5D.

6A, the antenna device according to an embodiment of the present invention includes a connection member 200, an IC 310, an adhesive member 320, an electrical connection structure 330, a sealing material 340, and a passive component. It may include at least some of the 350 and the sub-substrate 410.

The connection member 200 may have a structure similar to that of the connection member described above with reference to FIGS. 1 to 5D.

The IC 310 is the same as the above-described IC, and may be disposed under the connection member 200. The IC 310 may be electrically connected to the wiring of the connection member 200 to transmit or receive an RF signal, and may be electrically connected to a ground plane of the connection member 200 to provide a ground. For example, the IC 310 may generate a converted signal by performing at least some of frequency conversion, amplification, filtering, phase control, and power generation.

The adhesive member 320 may adhere the IC 310 and the connection member 200 to each other.

The electrical connection structure 330 may electrically connect the IC 310 and the connection member 200. For example, the electrical connection structure 330 may have a structure such as a solder ball, a pin, a land, and a pad. The electrical connection structure 330 has a melting point lower than that of the wiring of the connection member 200 and the ground plane, so that the IC 310 and the connection member 200 may be electrically connected through a predetermined process using the low melting point.

The encapsulant 340 may seal at least a portion of the IC 310, and improve heat dissipation performance and impact protection performance of the IC 310. For example, the encapsulant 340 may be implemented with a photo imageable encapsulant (PIE), an Ajinomoto build-up film (ABF), an epoxy molding compound (EMC), or the like.

The passive component 350 may be disposed on the lower surface of the connection member 200, and may be electrically connected to the wiring and/or the ground plane of the connection member 200 through the electrical connection structure 330.

The sub-substrate 410 may be disposed under the connection member 200, and receives an intermediate frequency (IF) signal or a base band signal from the outside and transmits it to the IC 310 or from the IC 310. It may be electrically connected to the connection member 200 to receive the IF signal or the baseband signal and transmit it to the outside. Here, the frequency of the RF signal (eg, 24GHz, 28GHz, 36GHz, 39GHz, 60GHz) is greater than the frequency of the IF signal (eg, 2GHz, 5GHz, 10GHz, etc.).

For example, the sub-substrate 410 may transmit an IF signal or a baseband signal to the IC 310 or receive from the IC 310 through a wiring that may be included in the IC ground plane of the connection member 200. Since the first ground plane of the connection member 200 is disposed between the IC ground plane and the wiring, the IF signal or the baseband signal and the RF signal may be electrically isolated in the antenna module.

Referring to FIG. 6B, the antenna device according to an embodiment of the present invention may include at least some of a shielding member 360, a connector 420, and a chip antenna 430.

The shielding member 360 may be disposed under the connection member 200 to confine the IC 310 together with the connection member 200. For example, the shielding member 360 may be disposed to cover the IC 310 and the passive component 350 together (eg, a conformal shield) or cover each (eg, a compartment shield). For example, the shield member 360 may have a shape of a hexahedron with an open surface, and may have a hexahedral accommodation space through coupling with the connection member 200. The shielding member 360 may have a short skin depth by being implemented with a material of high conductivity such as copper, and may be electrically connected to the ground plane of the connection member 200. Accordingly, the shielding member 360 may reduce electromagnetic noise that may be received by the IC 310 and the passive component 350.

The connector 420 may have a connection structure of a cable (e.g., a coaxial cable, a flexible PCB), may be electrically connected to the IC ground plane of the connection member 200, and may perform a role similar to the above-described sub-substrate. have. That is, the connector 420 may receive an IF signal, a baseband signal and/or power from a cable, or may provide an IF signal and/or a baseband signal through a cable.

The chip antenna 430 may transmit or receive an RF signal in support of the antenna device according to an embodiment of the present invention. For example, the chip antenna 430 may include a dielectric block having a dielectric constant greater than that of an insulating layer, and a plurality of electrodes disposed on both sides of the dielectric block. One of the plurality of electrodes may be electrically connected to the wiring of the connection member 200, and the other may be electrically connected to the ground plane of the connection member 200.

7A and 7B are plan views illustrating an arrangement of an antenna device in an electronic device according to an embodiment of the present invention.

Referring to FIG. 7A, an antenna module including an antenna device 100g, a patch antenna pattern 1110g, and a dielectric layer 1140g is disposed on a side boundary of the electronic device 700g on the set substrate 600g of the electronic device 700g. Can be arranged adjacent.

The electronic device 700g includes a smart phone, a personal digital assistant, a digital video camera, a digital still camera, a network system, and a computer. ), a monitor, a tablet, a laptop, a netbook, a television, a video game, a smart watch, an automotive, etc. Not limited.

A communication module 610g and a baseband circuit 620g may be further disposed on the set substrate 600g. The antenna module may be electrically connected to the communication module 610g and/or the baseband circuit 620g through a coaxial cable 630g.

The communication module 610g includes a memory chip such as a volatile memory (eg, DRAM), a non-volatile memory (eg, ROM), and a flash memory to perform digital signal processing; Application processor chips such as a central processor (eg, a CPU), a graphics processor (eg, a GPU), a digital signal processor, an encryption processor, a microprocessor, and a microcontroller; It may include at least some of a logic chip such as an analog-to-digital converter and an application-specific IC (ASIC).

The baseband circuit 620g may generate a base signal by performing analog-to-digital conversion, amplification, filtering, and frequency conversion of the analog signal. The base signal input/output from the baseband circuit 620g may be transmitted to the antenna module through a cable.

For example, the base signal may be transmitted to the IC through an electrical connection structure, a core via, and a wiring. The IC may convert the base signal into a millimeter wave (mmWave) band RF signal.

Referring to FIG. 7B, a plurality of antenna modules each including an antenna device 100i and a patch antenna pattern 1110i are located at the center of the side of the polygonal electronic device 700i on the set substrate 600i of the electronic device 700i. Each may be disposed adjacent to each other, and a communication module 610i and a baseband circuit 620i may be further disposed on the set substrate 600i. The antenna device and the antenna module may be electrically connected to the communication module 610i and/or the baseband circuit 620i through a coaxial cable 630i.

On the other hand, the endfire antenna pattern, feed line, feed via, ground plane, patch antenna pattern, shield via, and electrical connection structure disclosed herein are metal materials (eg, copper (Cu), aluminum (Al), silver ( Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), or a conductive material such as an alloy thereof), CVD (chemical vapor deposition), PVD (Physical Vapor Deposition), sputtering (sputtering), subtractive (Subtractive), additive (Additive), SAP (Semi-Additive Process), MSAP (Modified Semi-Additive Process) can be formed according to the plating method. However, it is not limited thereto.

Meanwhile, the dielectric layer and/or the insulating layer disclosed in the present specification is FR4, Liquid Crystal Polymer (LCP), Low Temperature Co-fired Ceramic (LTCC), thermosetting resin such as epoxy resin, thermoplastic resin such as polyimide, or these resins. A resin impregnated in core materials such as glass fiber (Glass Fiber, Glass Cloth, Glass Fabric) with inorganic filler, prepreg, ABF (Ajinomoto Build-up Film), FR-4, BT (Bismaleimide Triazine), It may be implemented with a photo-sensitive dielectric (PID) resin, a general copper clad laminate (CCL), or a glass or ceramic-based insulating material. The dielectric layer and/or the insulating layer may be filled in at least a portion of a position where an endfire antenna pattern, a feed line, a feed via, a ground plane, a patch antenna pattern, a shield via, and an electrical connection structure are not disposed in the antenna device disclosed herein I can.

Meanwhile, the RF signals disclosed herein are Wi-Fi (IEEE 802.11 family, etc.), WiMAX (IEEE 802.16 family, etc.), IEEE 802.20, long term evolution (LTE), Ev-DO, HSPA+, HSDPA+, HSUPA+, EDGE, It may have a format according to any other wireless and wired protocols designated as GSM, GPS, GPRS, CDMA, TDMA, DECT, Bluetooth, 3G, 4G, 5G and later, but is not limited thereto.

In the above, the present invention has been described by specific matters such as specific elements and limited embodiments and drawings, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , Anyone with ordinary knowledge in the technical field to which the present invention pertains can make various modifications and variations from these descriptions.

101e, 102e, 103e, 104e: antenna device
110a: feed line
111a: feed via
114a, 114b, 114c, 114d, 114e: multiple linkage patterns
120a: first endfire antenna pattern
121a: first dipole pattern
122a: second dipole pattern
123a: second endfire antenna pattern
124: third endfire antenna pattern
124a, 124b, 124c, 124d: multiple arc patterns
200a, 200b: connection member
201a, 202a, 203a, 204a, 205a, 206a: ground plane
1110a: patch antenna pattern

Claims (16)

Feed line;
A ground plane surrounding a portion of the feed line;
A feed via electrically connected to the feed line;
A first endfire antenna pattern disposed in front of the ground plane and electrically connected to the feed via;
A second endfire antenna pattern electrically connected to the feed line and disposed in front of the first endfire antenna pattern; And
A third endfire antenna pattern electrically connected to the feed via and disposed in front of the first endfire antenna pattern so that at least a portion thereof overlaps the second endfire antenna; Antenna device comprising a.
The method of claim 1,
The second endfire antenna pattern is an open type,
The third endfire antenna pattern is a closed antenna device.
The method of claim 1,
The second endfire antenna pattern is an antenna device having a shape extending by bent diagonally with respect to a forward direction.
The method of claim 1,
At least a portion of the third endfire antenna pattern has an arc shape.
The method of claim 4, wherein the third endfire antenna pattern,
A plurality of arc patterns each having an arc shape; And
A plurality of linkage patterns electrically connecting the plurality of arc patterns; Antenna device comprising a.
The method of claim 5,
An antenna device in which the separation distance from the center of each of the plurality of arc patterns is longer than the separation distance from one end of the plurality of arc patterns.
The method of claim 5,
The width of each of the plurality of arc patterns is shorter than the width of the second endfire antenna pattern.
The method of claim 5,
The antenna device having a width of each of the plurality of linking patterns is shorter than that of the feed line.
The method of claim 1,
An antenna device having a width of the second endfire antenna pattern longer than that of the first endfire antenna pattern.
The method of claim 1,
At least a portion of the first endfire antenna pattern has a shape extending diagonally with respect to a rear direction.
The method of claim 10, wherein the first endfire antenna pattern,
A first dipole pattern electrically connected to the feed via; And
A second dipole pattern electrically connected to the feed via and extending diagonally behind the first dipole pattern; Antenna device comprising a.
The method of claim 11,
The ground plane antenna device having a recessed area in which a portion of the second dipole pattern is located.
Feed line;
A ground plane surrounding a portion of the feed line;
A feed via electrically connected to the feed line; And
A first endfire antenna pattern disposed in front of the ground plane and electrically connected to the feed via;
A second endfire antenna pattern electrically connected to the feed line and disposed in front of the first endfire antenna pattern; Including,
The first endfire antenna pattern includes a first dipole pattern and a second dipole pattern extending obliquely rearward to the first dipole pattern,
At least a portion of the second endfire antenna pattern has a shape extending diagonally forward with respect to the first dipole pattern.
The method of claim 13,
The second endfire antenna pattern has a shape extending from a point further forward of the feed line than the first and second dipole patterns, and extending by bent diagonally in a forward direction.
The method of claim 13,
The first and second dipole patterns have a shape extending in different directions from overlapping points,
The ground plane antenna device having a recessed area in which a portion of the second dipole pattern is located.
The method of claim 13,
An antenna device having a width of each of the first and second dipole patterns shorter than that of the second endfire antenna pattern.

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