KR20210002058A - 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 miniaturizing. The antenna device may comprise: a feed line; a ground plane surrounding a portion of the feed line; a feed via electrically connected to the feed line and extending downward; a first endfire antenna pattern spaced apart and disposed in the front of the ground plane and electrically connected to the feed via; a second endfire antenna pattern spaced apart and disposed from an upper part of the first endfire antenna pattern; and a core via electrically connecting the first endfire antenna pattern and the second endfire antenna pattern.

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.

Unexamined Patent Publication No. 10-2018-0105833

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 and extending downward; A first endfire antenna pattern disposed in front of the ground plane and electrically connected to the feed via; A second endfire antenna pattern spaced apart from above the first endfire antenna pattern; And a core via electrically connecting the first and second endfire antenna patterns. Includes.

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 first endfire antenna pattern disposed in front of the ground plane and electrically connected to the feed line; A second endfire antenna pattern spaced apart from above the first endfire antenna pattern; A core via electrically connecting the first and second endfire antenna patterns; And a plurality of first ground patterns each extending from at least a portion of the ground plane and protruding toward each other so that the first and second endfire antenna patterns are disposed therebetween. Includes.

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 is a perspective view showing an antenna device according to an embodiment of the present invention.
1B is a side view showing an antenna device according to an embodiment of the present invention.
1C is a plan view showing an antenna device according to an embodiment of the present invention.
2A is a perspective view showing an antenna device according to an embodiment of the present invention.
2B is a side view showing an antenna device according to an embodiment of the present invention.
2C is a plan view illustrating an arrangement of an antenna device according to an embodiment of the present invention.
3 is a perspective view showing an antenna device according to an embodiment of the present invention.
4A and 4B are perspective views showing dimensions of an antenna device according to an embodiment of the present invention.
5A and 5B are diagrams illustrating a connection member that may be included in the antenna device shown in FIGS. 1A to 4B and a lower structure thereof.
6A and 6B 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 described below 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 is a perspective view showing an antenna device according to an embodiment of the present invention, FIG. 1B is a side view showing an antenna device according to an embodiment of the present invention, and FIG. 1C is a view showing an antenna device according to an embodiment of the present invention. It is a plan view shown.

1A, 1B, and 1C, an antenna device according to an embodiment of the present invention includes a first endfire antenna pattern 121a and a second endfire antenna pattern 122a. It is possible to provide a means for transmitting and receiving a frequency band.

The first end fire antenna pattern 121a is electrically connected to one end of the feed line 110a through the feed via 111a, and receives first and second radio frequency (RF) signals from the feed line 110a. The first and second RF signals transmitted forward (eg, y-direction) 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 connected to the IC 310a disposed at the lower side (for example, in the -z direction). Can be electrically connected. The IC 310a transmits the first and second RF signals to the first and second endfire antenna patterns 121a and 122a through the first wiring via 231a and the feed line 110a. Can be offered or provided.

The feed line 110a may have a structure in which a transmission path of a first RF signal in a first frequency band (eg, 39 GHz) and a transmission path of a second RF signal in a second frequency band (eg, 28 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 side and the other side pole of the first endfire antenna pattern 121a, respectively.

A portion 212a of the feedline is surrounded by at least a portion of the ground planes 201a, 202a, 203a, 204a, 205a, 206a. Accordingly, the first and second endfire antenna patterns 121a and 122a may form a radiation pattern near the end-line of the ground planes 201a, 202a, 203a, 204a, 205a, 206a.

The first and second endfire antenna patterns 121a and 122a resonate with respect to the first and/or second frequency band, respectively, to receive energy corresponding to the first and second RF signals intensively and radiate to the outside. have.

The insulating layer 240a may surround the first and second endfire antenna patterns 121a and 122a, and may have a higher dielectric constant than air. The dielectric constant may affect the resonance frequencies of the first and second endfire antenna patterns 121a and 122a.

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 121a and 122a ( reflect), the radiation patterns of the first and second endfire antenna patterns 121a and 122a can be concentrated forward (eg, in the y direction). Accordingly, a gain of the first and second endfire antenna patterns 121a and 122a may be improved.

The plurality of second shielding vias 145a are at least partially disposed behind the first and second endfire antenna patterns 121a and 122a and are upwardly from the ground planes 201a, 202a, 203a, 204a, 205a, 206a. Can be extended. The plurality of second shielding vias 145a may further improve reflection performance of the connection member 200a for the first and second RF signals.

The resonance of the first and second endfire antenna patterns 121a and 122a is based on a resonance frequency according to a combination of inductance and capacitance corresponding to the first and second endfire antenna patterns 121a and 122a and surrounding structures. Can occur.

Each of the first and second endfire antenna patterns 121a and 122a has an intrinsic resonance frequency according to an intrinsic factor (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 endfire antenna pattern 121a is smaller than the second endfire antenna pattern 122a, an inductance and/or capacitance smaller than the inductance and/or capacitance according to the intrinsic element of the second endfire antenna pattern 122a Therefore, it may resonate predominantly with respect to the first RF signal having a shorter wavelength among the first and second RF signals. The second endfire antenna pattern 122a may resonate predominantly with respect to the second RF signal.

The feed via 111a may electrically connect between the first end fire antenna pattern 121a and the feed line 110a. That is, the first end fire antenna pattern 121a may be disposed under the feed line 110a due to the feed via 111a.

The -z direction vector component of the first RF signal of the first endfire antenna pattern 121a may be added to the first 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 121a may be inclined in the -z direction from the front (eg, y direction).

The core via 115a may electrically connect between the first endfire antenna pattern 121a and the second endfire antenna pattern 122a.

The length of the core via 115a may have a long length such that the second end fire antenna pattern 122a is disposed above the feed line 110a.

The +z direction vector component of the second RF signal of the second endfire antenna pattern 122a may be added to the second RF signal according to the +z direction path provided by the core via 115a. Accordingly, the radiation pattern of the second endfire antenna pattern 122a may be inclined in the +z direction from the front (eg, y direction).

Accordingly, the radiation pattern of the first endfire antenna pattern 121a may be slightly inclined in the -z direction, and the radiation pattern of the second endfire antenna pattern 122a may be slightly inclined in the +z direction.

That is, the radiation patterns of the first and second endfire antenna patterns 121a and 122a may be formed to be further away from each other. Accordingly, electromagnetic interference between the first and second endfire antenna patterns 121a and 122a may be reduced, and gains for the first and second RF signals may be improved.

In addition, the length of the core via 115a is longer than the length of the feed via 111a, and the length of the feed via 111a and the length of the core via 115a are respectively first and second endfire antenna patterns 121a, 122a) can act as a factor affecting the resonance frequency.

The length of the feed via 111a may correspond to a first RF signal having a shorter wavelength among the first and second RF signals, and the length of the core via 115a may be a longer wavelength among the first and second RF signals. It may correspond to the second RF signal.

Since the core via 115a has a structure extending from the first endfire antenna pattern 121a disposed below the feed line 110a, the length of the core via 115a can be easily lengthened.

Accordingly, since the first and second endfire antenna patterns 121a and 122a can more easily add resonance points for the first and second frequencies, respectively, the first and second frequencies corresponding to the first and second frequencies 2 You can widen the bandwidth more easily.

In addition, depending on the structure of the first and second feed vias 116a and 117a extending in different directions, a height difference between the first and second endfire antenna patterns 121 and 122 may be greater.

That is, the radiation pattern formation start points of the first and second endfire antenna patterns 121 and 122 may be further away from each other. Accordingly, the radiation patterns of the first and second endfire antenna patterns 121 and 122 may be formed to be further away from each other. Accordingly, electromagnetic interference between the first and second endfire antenna patterns 121 and 122 may be reduced, and gains for the first and second RF signals may be improved.

For example, the core via 115a may include a plurality of core vias, and the second endfire antenna pattern 122a may electrically connect the core vias. That is, the second endfire antenna pattern 122a may be a closed type, and is of a type different from the open type of the first endfire antenna pattern 121a. Since the open structure and the closed structure form a radiation pattern using different electromagnetic principles, electromagnetic interference caused by the first and second radiation patterns of the first and second endfire antenna patterns 121 and 122 to each other is reduced. I can. Accordingly, the gain for the first and second RF signals can be further improved.

1A, 1B, and 1C, the antenna device according to an embodiment of the present invention is electrically connected to the core via 115a between the first and second endfire antenna patterns 121a and 122a. It may further include core patterns 116a, 117a, 118a, 119a having a longer width than the core via 115a.

The width of the core patterns 116a, 117a, 118a, 119a in the horizontal direction (eg, in the x direction and/or y direction) is a factor that affects the resonance frequencies of the first and second endfire antenna patterns 121 and 122 Can act as

For example, when the horizontal width of the core patterns 116a, 117a, 118a, 119a is optimized to one of the first and second resonance frequencies of the first and second endfire antenna patterns 121, 122, the core The horizontal width of the patterns 116a, 117a, 118a, and 119a may act as a filtering element for the other of the first and second resonance frequencies.

That is, the core patterns 116a, 117a, 118a, 119a may increase the degree of electromagnetic isolation between the first and second endfire antenna patterns 121 and 122.

In addition, the core patterns 116a, 117a, 118a, 119a may be electromagnetically coupled to the plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a, and the core patterns 116a, 117a , 118a, 119a) may act as a factor affecting the resonance frequencies of the first and second endfire antenna patterns 121 and 122.

1A, 1B, and 1C, an antenna device according to an embodiment of the present invention includes a plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a, and a plurality of second ground patterns. (181a, 182a, 183a, 184a, 185a, 186a), a plurality of first and second shielding vias 145a may be further included.

The plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a are respectively a plurality of ground planes 201a, 202a, 203a so that the first and second endfire antenna patterns 121a, 122a are disposed therebetween. , 204a, 205a, 206a, may extend from at least a portion of the ground plane (201a, 202a, 203a, 204a, 205a, 206a) may have a shape protruding toward each other in front of.

For example, the plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a may have an L shape or a T shape.

Accordingly, the first x-direction separation distance between the protruding portions from the plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a may be shorter than the second x-direction separation distance behind the protruding portion. have.

The first and second x-direction separation distances may serve as factors affecting the resonance frequencies of the first and second endfire antenna patterns 121a and 122a, respectively.

That is, the plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a provide an impedance corresponding to the first x direction separation distance as the first endfire antenna pattern 121a, and the second x direction Impedance corresponding to the separation distance may be provided as the second endfire antenna pattern 122a. Accordingly, the first and second endfire antenna patterns 121a and 122a can more easily increase a gain or widen a bandwidth.

Further, the core via 115a may be disposed closer to the plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a than the feed via 111a.

Accordingly, the core via 115a may be more efficiently electromagnetically coupled to the protruding portions of the plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a.

The plurality of second ground patterns 181a, 182a, 183a, 184a, 185a, 186a are spaced apart from the top of the plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a and protrude toward each other. It can have a shape.

In addition, the plurality of first shielding vias 145a protrude from the plurality of first and second ground patterns 131a, 132a, 133a, 134a, 135a, 136a, 181a, 182a, 183a, 184a, 185a, 186a, respectively. Between parts can be electrically connected. The plurality of first shielding vias 145a may be electromagnetically coupled to the core via 115a.

The protruding structure of the plurality of second ground patterns 181a, 182a, 183a, 184a, 185a, 186a may act as a factor affecting the resonance frequencies of the first and second endfire antenna patterns 121a, 122a. . Accordingly, the first and second endfire antenna patterns 121a and 122a can more easily increase a gain or widen a bandwidth.

The first endfire antenna pattern 121a may be disposed below or at the same level as at least a portion of the plurality of first ground patterns 131a, 132a, 133a, 134a, 135a, 136a. The second endfire antenna pattern 122a may be disposed on or above at least a portion of the plurality of second ground patterns 181a, 182a, 183a, 184a, 185a, and 186a.

Accordingly, since the z-direction separation distance between the first and second endfire antenna patterns 121a and 122a can be more easily lengthened, electromagnetic interference between the first and second RF signals can be further reduced. In addition, due to the plurality of first and second ground patterns 131a, 132a, 133a, 134a, 135a, 136a, 181a, 182a, 183a, 184a, 185a, 186a), the overall size of the antenna device is the first and second Even if the separation distance in the z direction between the endfire antenna patterns 121a and 122a increases, it may not substantially increase.

Meanwhile, the plurality of first and second ground patterns 131a, 132a, 133a, 134a, 135a, 136a, 181a, 182a, 183a, 184a, 185a, 186a are the first and second endfire antenna patterns 121a, 122a. ), but may protrude in a length that does not block the front of at least some of the first and second endfire antenna patterns 121a and 122a.

That is, the first and second ground patterns 131a, 132a, 133a, 134a, 135a, 136a, 181a, 182a, 183a, 184a, 185a, 186a) have the shortest separation distance between each part and the rest of the second end fire. It may be longer than the length of the antenna pattern 122a.

Accordingly, the protruding portions of the plurality of first and second ground patterns 131a, 132a, 133a, 134a, 135a, 136a, 181a, 182a, 183a, 184a, 185a, 186a are the first and second endfire antennas. Since it does not substantially interfere with the formation of the radiation pattern of the patterns 121a and 122a, a high gain of the first and second endfire antenna patterns 121a and 122a can be secured.

Referring to FIG. 1B, the antenna device according to an embodiment of the present invention further includes a patch antenna pattern 1110a disposed above a plurality of ground planes 201a, 202a, 203a, 204a, 205a, 206a. I can.

The patch antenna pattern 1110a is electrically connected to the second feed via 1120a to remotely transmit/receive a third RF signal in the z direction. As the patch antenna pattern 1110a is electromagnetically coupled to the upper coupling pattern 1115a, the bandwidth is increased. It may be wider, and may be surrounded by a plurality of patch antenna ground patterns 1101a, 1102a, 1103a, 1104a, 1105a, and 1106a.

The plurality of patch antenna ground patterns 1101a, 1102a, 1103a, 1104a, 1105a, 1106a may be electrically connected to the plurality of second ground patterns 181a, 182a, 183a, 184a, 185a, 186a.

The second feed via 1120a may be electrically connected to the second wiring via 232a. The first and second wiring vias 231a and 232a may be electrically connected to the IC 310a through the electrical connection structure 240a. The IC 310a may receive or transmit a base signal (eg, an IF signal or a baseband signal) through the mounted electrical connection structure 213a.

At least a portion of the second endfire antenna pattern 122a may be disposed above or above the patch antenna pattern 1110a. Accordingly, since the z-direction separation distance between the first and second endfire antenna patterns 121a and 122a can be more easily lengthened, electromagnetic interference between the first and second RF signals can be further reduced.

Meanwhile, referring to FIGS. 1A to 1C, 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 212a of the feed line and may be located at the rear of the first and second endfire antenna patterns 121a, 122a. Therefore, the first and second RF signals radiated from the first and second endfire antenna patterns 121a and 122a may be reflected. That is, since the plurality of ground planes 201a, 202a, 203a, 204a, 205a, 206a can act as reflectors for the first and second endfire antenna patterns 121a, 122a, the first and second The gain of the endfire antenna patterns 121a and 122a may be improved.

2A is a perspective view showing an antenna device according to an embodiment of the present invention, and FIG. 2B is a side view showing an antenna device according to an embodiment of the present invention.

2A and 2B, the core via 115a may be disposed further ahead than the feed via 111a.

2C is a plan view illustrating an arrangement of an antenna device according to an embodiment of the present invention.

Referring to FIG. 2C, a plurality of second endfire antenna patterns 122a and 122d may be arranged in the x direction, and radiation patterns may be concentrated in the y direction, respectively.

Depending on the design, a shape of some of the plurality of second endfire antenna patterns 122a and 122d may be different from the shape of the rest.

3 is a perspective view showing an antenna device according to an embodiment of the present invention.

3, the first endfire antenna pattern 121b and the second endfire antenna pattern 122c have a structure parallel to a plurality of ground planes 201a, 202a, 203a, 204a, 205a, 206a, respectively. Can have.

4A and 4B are perspective views showing dimensions of an antenna device according to an embodiment of the present invention.

Referring to FIG. 4A, the first endfire antenna pattern 121a may have a shape extending diagonally by an offset with respect to the feed line 110a.

Accordingly, the second length L2 of the first endfire antenna pattern 121a may be more freely adjusted by adjusting the direction extending from the feed line 110a of the first endfire antenna pattern 121a. Accordingly, the bandwidth of the first endfire antenna pattern 121a can be designed more freely.

In addition, the deviation between the third width W3 and the 3-2 width W3_2 of the second endfire antenna pattern 122a is greater than the deviation of the second width W2 of the first endfire antenna pattern 121a. It can be big.

Accordingly, since the first and second endfire antenna patterns 121a and 122a may more easily have different resonant frequencies, the gain and/or bandwidth of the first and second endfire antenna patterns 121a and 122a Can be improved.

In addition, the vertical separation distance H2-H1 between the feed line 110a and the second endfire antenna pattern 122a is the vertical separation between the feed line 110a and the first endfire antenna pattern 121a. It may be longer than the distance H1.

Accordingly, since the z-direction separation distance between the first and second endfire antenna patterns 121a and 122a can be more easily lengthened, electromagnetic interference between the first and second RF signals can be further reduced.

4B, the first and second ground patterns 130b and 180b each have a first x-direction length SWx1 and a second x-direction length SWx2, and a first y-direction length SWy1 and a second It may have 2 y-direction length SWy2 and a third y-direction length SWy3.

The first x-direction length (SWx1) and the second x-direction length (SWx2) are designed so that the protruding portions of the first and second ground patterns 130b and 180b are located in front of the first and second endfire antenna patterns. May be, but is not limited thereto.

The second x-direction length SWx2 may be designed so that the front of at least a portion of the first and second endfire antenna patterns is not blocked, but is not limited thereto.

5A and 5B are views illustrating a connection member that may be included in the antenna device shown in FIGS. 1A to 4B and a lower structure thereof.

5A, an 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 the connection member described above with reference to FIGS. 1A to 4B.

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. 5B, the antenna device according to an embodiment of the present invention may include at least some of a shield 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.

6A and 6B 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. 6A, an antenna module including an antenna device 100g, a patch antenna pattern 1110g, and a dielectric layer 1140g is formed on a side boundary of the electronic device 700g on a 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. 6B, 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, core via, wiring via, ground plane, ground pattern, patch antenna pattern, shield via, and electrical connection structure disclosed herein are made of a metal material (for example, 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, subtractive, additive, SAP (Semi-Additive Process), MSAP (Modified Semi-Additive Process) It may be formed according to a plating method such as, but 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. In the antenna device disclosed herein, the dielectric layer and/or the insulating layer includes an endfire antenna pattern, a feed line, a feed via, a core via, a wiring via, a ground plane, a ground pattern, a patch antenna pattern, a shield via, and an electrical connection structure. It may be filled in at least some of the unplaced locations.

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.

110a: feed line
111a: feed via
115a: core via
116a, 117a, 118a, 119a: core pattern
121a: first endfire antenna pattern
122a: second endfire antenna pattern
124: third endfire antenna pattern
131a, 132a, 133a, 134a, 135a, 136a: a plurality of first ground patterns
145a: Chapevia
181a, 182a, 183a, 184a, 185a, 186a: a plurality of second ground patterns
200a, 200b: connection member
201a, 202a, 203a, 204a, 205a, 206a: ground plane
212a: Part of the feed line
1110a: patch antenna pattern

Claims (1)

Feed line;
A ground plane surrounding a portion of the feed line;
A feed via electrically connected to the feed line and extending downward;
A first endfire antenna pattern disposed in front of at least a portion of the ground plane and electrically connected to the feed via;
A second endfire antenna pattern spaced apart from above the first endfire antenna pattern; And
A core via electrically connecting the first and second endfire antenna patterns; Antenna device comprising a.

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