KR101856564B1 - Combo antenna module and mobile electronic device having the same - Google Patents
Combo antenna module and mobile electronic device having the same Download PDFInfo
- Publication number
- KR101856564B1 KR101856564B1 KR1020150102441A KR20150102441A KR101856564B1 KR 101856564 B1 KR101856564 B1 KR 101856564B1 KR 1020150102441 A KR1020150102441 A KR 1020150102441A KR 20150102441 A KR20150102441 A KR 20150102441A KR 101856564 B1 KR101856564 B1 KR 101856564B1
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- South Korea
- Prior art keywords
- antenna
- capacitor
- unit
- wireless
- module
- Prior art date
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- 239000003990 capacitor Substances 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 22
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 10
- 239000002159 nanocrystal Substances 0.000 claims description 10
- 229910001325 element alloy Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 5
- 229910002058 ternary alloy Inorganic materials 0.000 claims description 3
- 229910003962 NiZn Inorganic materials 0.000 claims description 2
- 230000001788 irregular Effects 0.000 claims description 2
- 239000012790 adhesive layer Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000009774 resonance method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910018605 Ni—Zn Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H02J7/025—
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0075—Magnetic shielding materials
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
A combo antenna module and a portable electronic device including the same are provided. A combo antenna module according to an embodiment of the present invention includes an antenna unit including a circuit board and a plurality of antennas having different operating frequencies; A first capacitor and a second capacitor connected in parallel to any one of the plurality of antennas and a switch disposed between the first capacitor and the second capacitor and being opened or closed according to an operation mode of the antenna unit, And a plurality of switching units that form a closed loop in which the antenna and the second capacitor couple with another antenna when the switch is opened. Accordingly, since a separate resonant circuit is additionally formed and coupled to the antenna, it is possible to improve the range, efficiency or performance of wireless power charging or wireless communication, and it is unnecessary to provide additional internal patterns, It is possible to achieve miniaturization of a combo antenna module and improve the convenience and satisfaction of the user of the portable electronic device having the combo antenna module.
Description
The present invention relates to a combo antenna module, and more particularly, to a combo antenna module and a portable electronic device including the same, which can increase the wireless power charging or wireless communication range and improve the wireless power charging efficiency or the wireless communication performance according to the operation mode. ≪ / RTI >
2. Description of the Related Art Recently, portable electronic devices such as mobile phones, tablet PCs, and the like are equipped with various wireless communication functions and a wireless power charging function. At this time, since each wireless communication and wireless power charging uses different frequencies depending on each application, it is necessary to provide an antenna for each frequency or application. Therefore, the number of antennas provided in portable electronic devices is increasing.
For example, an NFC (Near Field Communication) or MST (Magnetic Secure Transmission) antenna for wireless communication and a Wireless Power Consortium (WPC), a Power Matters Alliance (PMA), or an Alliance for Wireless Power ) Antennas and the like, the antennas are being applied in the form of a combo (Combo).
Here, the WPC and PMA antennas perform wireless power charging in a magnetic induction manner that induces a current from one coil to another via a magnetic field. The A4WPC antenna transmits energy by coupling coils having the same resonance frequency to each other And performs wireless power charging in a self resonance manner.
At this time, the magnetic induction method is sensitive to the distance between the coils and the relative position, so that the transmission efficiency may drop sharply. In addition, the self-resonance system can charge wireless power even if the distance between the coils is not close, but there is a problem that the efficiency is low due to a large power loss, and electromagnetic waves are generated in a wide range.
Accordingly, recent portable electronic devices are adopting both a magnetic induction type and a self-resonance type so as to supplement the merits and demerits for the wireless power charging function and selectively use them as needed.
On the other hand, the inductance of the loop antenna is determined according to the communication frequency of each application and the wireless power charging frequency.
For example, in the case of an NFC antenna, an inductance of 1 to 2 μH is required to realize a frequency of 13.56 MHz, an inductance of 1 to 2 μH is required to implement a frequency of 6.78 MHz for an A4WP antenna, and a WPC or PMA antenna , An inductance of 6 to 12 μH is required to realize a frequency of 100 to 350 kHz, and an inductance of 10 to 40 μH is required for an MST antenna to realize a frequency of 100 kHz or less.
That is, a relatively low inductance is required because an NFC antenna or a self-resonating type A4WP antenna for wireless power is higher in frequency than an MST antenna or a WPC or PMA antenna for a magnetic induction type wireless power.
Here, a magnetic induction type wireless power charging (WPC, PMA) antenna is provided at the center of the antenna unit in consideration of the charging range, radio power strength and efficiency between the radio power transmitter Tx and the radio power receiver Rx . In particular, in the case of a combo antenna, most WPC or PMA antennas are arranged at the center of the antenna unit, and an MST antenna is arranged at the outer periphery thereof.
In this case, the NFC or A4WP antenna having a relatively low inductance has better performance as the antenna area is larger, so that the antenna is disposed near the outer periphery of the combo antenna. Such NFC or A4WP antennas are being utilized to increase the wireless communication or wireless power charging range, to improve the efficiency of wireless power charging, and to improve the performance of wireless communication, with additional patterns in the inner area of the antenna unit.
However, as described above, since the antenna such as WPC, PMA, or MST is located at the center of the antenna unit, it is difficult to implement the additional pattern of the NFC or A4WP antenna Faced.
Therefore, it is inevitable to develop a technique capable of increasing the area of the NFC or A4WP antenna without affecting the antennas such as WPC, PMA, or MST disposed in the antenna unit.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a combo capable of improving the range, efficiency or performance of wireless power charging or wireless communication by utilizing antennas of different modes by switching according to the operation mode of the antenna unit And an object thereof is to provide an antenna module.
In addition, the present invention provides a wireless communication device having a wireless power charging function capable of improving the range, efficiency or performance of wireless power charging or wireless communication using two antennas by switching the combo antenna module by determining the operation mode of the antenna unit There is another purpose in providing a portable electronic device.
According to an aspect of the present invention, there is provided an antenna unit including a circuit board and a plurality of antennas having different operating frequencies. A first capacitor and a second capacitor connected in parallel to any one of the plurality of antennas and a switch disposed between the first capacitor and the second capacitor and being opened or closed according to an operation mode of the antenna unit, And a plurality of switching units that form a closed loop that couples the antenna and the second capacitor to another antenna when the switch is opened.
Also, the circuit board may be made of a flexible material.
The antenna unit may further include: a first antenna disposed at an outermost portion of the circuit board; A second antenna disposed on a center side of the circuit board; And at least one third antenna disposed between the first antenna and the second antenna.
The second antenna may have a lower operating frequency than the first antenna and an operating frequency higher than the third antenna.
In addition, the first antenna may include any one of a wireless power antenna and an NFC antenna of a self-resonance type, the second antenna may be a magnetic induction type wireless power antenna, and the third antenna may be an MST antenna .
In addition, when the antenna unit is in the operating mode in which the first antenna is used, the switching unit may be switched on at least one of the plurality of switching units.
In addition, when the radio performance through the first antenna is equal to or lower than a reference value, the switching unit may open the switch of at least one of the plurality of switching units.
Also, the radio performance may be the intensity of the radio transmission or reception.
In addition, when the antenna unit is in the operation mode in which the first antenna is not used, the switching unit may be short-circuited in both of the plurality of switching units.
The combo antenna module may further include a shielding unit disposed on one side of the antenna unit to induce a magnetic field.
In addition, the shielding unit may be any one of a ribbon sheet, a ferrite sheet and a polymer sheet of an amorphous alloy or a nano-crystal alloy.
Further, the ribbon sheet may be constituted by stacking a plurality of amorphous alloy or nano-crystal alloy ribbon sheets.
Further, the ferrite sheet may be made of MnZn ferrite or NiZn ferrite.
The amorphous alloy or the nano-crystal alloy includes a ternary alloy or a five-element alloy, and the ternary alloy includes Fe, Si and B, and the five-element alloy includes Fe, Si, B, Cu, and Nb .
In addition, the shielding unit may be separately formed into a plurality of minute pieces.
In addition, the plurality of microparts may be entirely insulated or partially insulated between neighboring microparts.
In addition, the plurality of fine pieces may have a size of 1 mu m to 3 mm.
In addition, the plurality of micro pieces may be irregular.
According to another aspect of the present invention, A plurality of wireless modules interlocked with the plurality of antennas, respectively; And a mode determiner for determining which one of the plurality of radio modules is operating and controlling the switching of the combo antenna module.
In addition, any one of the plurality of radio modules can transmit power wirelessly.
Also, any one of the plurality of wireless modules can receive power wirelessly.
Also, any one of the plurality of wireless modules can communicate wirelessly.
On the other hand, the present invention provides a combo antenna module comprising a circuit board, an antenna unit including a plurality of antennas having different operating frequencies, and a shielding unit disposed on one surface of the antenna unit to induce a magnetic field. A first capacitor and a second capacitor connected in parallel to any one of the plurality of antennas and a switch disposed between the first capacitor and the second capacitor and being opened or closed according to an operation mode of the antenna unit, A plurality of switching units forming a closed loop in which the antenna and the second capacitor couple with another antenna when the switch is opened; A plurality of wireless modules interlocked with the plurality of antennas, respectively; And a mode determiner for determining which one of the plurality of radio modules is operating and controlling the switching of the combo antenna module.
According to the present invention, a closed loop is formed using an antenna of another mode by switching in accordance with the operation mode of the antenna unit, and a separate resonant circuit is further formed and coupled to the antenna, so that the range of wireless power charging or wireless communication, Or improve performance.
The present invention also improves the range and efficiency or performance of wireless power charging or wireless communication without requiring additional internal patterns by forming a closed loop to couple an antenna using low frequencies to an antenna using high frequencies And the miniaturization of the combo antenna module having a plurality of antennas can be achieved.
Further, the combo antenna module of the present invention is provided in a portable electronic device, thereby improving the range and efficiency or performance of wireless power charging or wireless communication by switching according to an operation mode, thereby improving convenience and satisfaction of the user.
1 is a schematic view of a combo antenna module according to an embodiment of the present invention;
2 is a block diagram schematically showing an example of the operation state of the combo antenna module according to an embodiment of the present invention;
Fig. 3 is an equivalent circuit diagram of Fig. 2,
4 is a block diagram schematically showing another example of the operating state of the combo antenna module according to the embodiment of the present invention.
Fig. 5 is an equivalent circuit diagram of Fig. 4,
6 is a perspective view schematically showing a combo antenna module according to an embodiment of the present invention,
Fig. 7 is a cross-sectional view showing an example of the shielding unit of Fig. 6,
8 is a schematic block diagram of a portable electronic device according to an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.
The
The
The circuit board 111 is a base material having at least one antenna or an optional circuit portion formed on its upper surface. The circuit board 111 is a material having heat resistance, pressure resistance, and flexibility. Considering the physical properties of such a material, a film such as PI or PET, which is a thermosetting polymer film, may be employed as the circuit board 111. [ In particular, the polyimide film usually has a high temperature of 400 ° C or higher and a low temperature of-269 ° C. It has super heat resistance and ultra low cold resistance, and is not only thin and flexible, but also resistant to chemical and abrasion, Because.
In addition, a circuit unit (not shown) or a connection terminal for electrical connection with an electronic device is provided on one side of the circuit board 111 so as to correspond to the number of antennas.
The
At this time, the
The
In this case, the
The
At this time, the
Although the
6, the
Although not shown, when the plurality of
The plurality of switching
Hereinafter, the case where the number of antennas of the
The
Here, the first capacitor (C 11) and the second capacitor (C 12) is disposed between said switch (SW 1) can be attached and detached according to the opening and closing of the switch (SW 1). That is, when the switch SW 1 is opened, the
At this time, one end of the switch SW 1 may be connected to both ends of the
As a result, the first capacitor C 11 may be directly connected to the
The
Here, the first capacitor (C 21) and the second capacitor (C 22) may be separate or be disposed between the switch (SW 2) connected in accordance with the opening and closing of the switch (SW 2). That is, when the switch SW 2 is opened, the
At this time, one end of the switch SW 2 may be connected to both ends of the
As a result, the first capacitor C 21 may be directly connected to the
The
For example, as shown in FIG. 2, the switch SW 1 of the
At this time, wireless power charging and wireless communication can be performed through either the
In this case, as shown in FIG. 3, the
Where L 2 and L 3 are the inductance of the
4, when at least one of the plurality of switching
5, the
Such an independent resonant circuit can be coupled to the
As a result, by coupling operation from at least one of the
At this time, by adjusting the capacitances of the first capacitors C 11 and C 21 and the second capacitors C 12 and 22 and the inductances L 2 and L 3 of the antenna, The
As such, the closed loop formed by at least one of the
Therefore, by forming a closed loop in which at least one of the
As a result, the range of the antenna used for charging the wireless power of the self-resonance method is extended not only to the outermost portion of the circuit board 111 but also to the central portion of the circuit board 111, The range of wireless power charging or wireless communication can be widened, and wireless power charging or wireless communication can be performed over a wider range, so that the efficiency of wireless power charging or the performance of wireless communication can be improved.
In addition, by selectively using at least one of the
In this manner, when the operation mode of the
Alternatively, the plurality of switching
In addition, when the operation mode of the
At least one of the
The present invention is not limited to this configuration and the plurality of switching
6, the
The
The
That is, when the wireless power is charged by the self-induction method in the frequency band of 100 to 350 kHz, the
The
The
For example, the
In addition, the
Here, the amorphous alloy or the nano-crystal alloy may be a Fe-based or a Co-based magnetic alloy, and the amorphous alloy and the nano-crystal alloy may include a three-element alloy or a five-element alloy. For example, the three-element alloy may include Fe, Si, and B, and the five-element alloy may include Fe, Si, B, Cu, and Nb.
7, the shielding unit 130 'may be formed by stacking a plurality of amorphous alloy or nanocrystalline
In addition, the
At this time, the plurality of fine pieces may be formed to have a size of 1 to 3 mm, and each piece may be irregularly randomized.
When a plurality of
At this time, the
The
8, the portable
The
Alternatively, the
For example, in the portable
At this time, the
The
The plurality of wireless modules may include the
The
The
The
In this case, when the
When the
In addition, when the
When the
When the
In addition, when the
By providing the
The plurality of switching
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
10: portable electronic device 12: mode determination unit
14: first wireless module 16: second wireless module
18: Third wireless module 100: Combo antenna module
110: antenna unit 111: circuit board
112: first antenna 114: second antenna
116: Third antenna 120:
122: first switching unit 124: second switching unit
130,130 ': Shielding unit
131a, 131b, 133c: ribbon sheet of amorphous alloy or nano-crystal alloy
131d:
Claims (23)
A first capacitor and a second capacitor connected in parallel to any one of the plurality of antennas and a switch disposed between the first capacitor and the second capacitor and being opened or closed according to an operation mode of the antenna unit, And a plurality of switching units that form a closed loop in which the antenna and the second capacitor couple with another antenna when the switch is opened.
Wherein the circuit board is made of a flexible material.
A first antenna disposed at an outermost portion of the circuit board;
A second antenna disposed on a center side of the circuit board; And
And at least one third antenna disposed between the first antenna and the second antenna.
Wherein the second antenna has a lower operating frequency than the first antenna and a higher operating frequency than the third antenna.
Wherein the first antenna includes one of a radio power antenna of a self resonance type and an NFC antenna,
The second antenna is a wireless power antenna of a magnetic induction type,
And the third antenna is an MST antenna.
Wherein the switch unit opens the switch of at least one of the plurality of switching units when the antenna unit is in the operation mode using the first antenna.
Wherein the switch unit is short-circuited in both of the plurality of switching units when the antenna unit is in the operation mode in which the first antenna is not used.
Wherein the switching unit opens the switches of at least one of the plurality of switching units when the radio performance through the first antenna is below a reference value.
Wherein the radio performance is the intensity of the radio transmission or reception.
And a shielding unit disposed on one surface of the antenna unit to induce a magnetic field.
Wherein the shielding unit is one of a ribbon sheet of an amorphous alloy or a nano-crystal alloy, a ferrite sheet and a polymer sheet.
Wherein the ribbon sheet is formed by stacking a plurality of ribbon sheets of amorphous alloy or nano-crystal alloy.
Wherein the ferrite sheet is made of MnZn ferrite or NiZn ferrite.
The amorphous alloy or the nanocrystalline alloy includes a three-element alloy or a five-element alloy,
Wherein the ternary alloy comprises Fe, Si and B,
Wherein the five element alloy comprises Fe, Si, B, Cu and Nb.
Wherein the shielding unit is divided into a plurality of minute pieces.
Wherein the plurality of microparts are entirely insulated or partially insulated between neighboring microparts.
Wherein the plurality of micro pieces are 1 mu m to 3 mm in size.
And the plurality of minute pieces are formed at an irregular shape.
A plurality of wireless modules interlocked with the plurality of antennas, respectively; And
And a mode determiner for determining which one of the plurality of radio modules is operating and controlling switching of the combo antenna module.
Wherein one of said plurality of wireless modules transmits power wirelessly.
Wherein one of said plurality of wireless modules receives power wirelessly.
Wherein any one of said plurality of wireless modules communicates wirelessly.
A first capacitor and a second capacitor connected in parallel to any one of the plurality of antennas and a switch disposed between the first capacitor and the second capacitor and being opened or closed according to an operation mode of the antenna unit, A plurality of switching units forming a closed loop in which the antenna and the second capacitor couple with another antenna when the switch is opened;
A plurality of wireless modules interlocked with the plurality of antennas, respectively; And
And a mode determiner for determining which one of the plurality of radio modules is operating and controlling switching of the combo antenna module.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150102441A KR101856564B1 (en) | 2015-07-20 | 2015-07-20 | Combo antenna module and mobile electronic device having the same |
PCT/KR2016/007495 WO2017014467A1 (en) | 2015-07-20 | 2016-07-11 | Combination antenna module and portable electronic device including same |
US15/745,731 US10931151B2 (en) | 2015-07-20 | 2016-07-11 | Combination antenna module and portable electronic device including same |
CN201680053099.9A CN108140476B (en) | 2015-07-20 | 2016-07-11 | Combined antenna module and portable electronic device including the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150102441A KR101856564B1 (en) | 2015-07-20 | 2015-07-20 | Combo antenna module and mobile electronic device having the same |
Publications (2)
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KR20170010598A KR20170010598A (en) | 2017-02-01 |
KR101856564B1 true KR101856564B1 (en) | 2018-05-10 |
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KR1020150102441A KR101856564B1 (en) | 2015-07-20 | 2015-07-20 | Combo antenna module and mobile electronic device having the same |
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KR20220093956A (en) * | 2020-12-28 | 2022-07-05 | 삼성전자주식회사 | Electronic device to improve the efficiency of wireless charging |
JP2022133597A (en) * | 2021-03-02 | 2022-09-14 | Tdk株式会社 | Antenna device and antennae module provided with the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101265234B1 (en) | 2012-01-30 | 2013-05-16 | 쓰리에이로직스(주) | Nfc device |
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KR101126676B1 (en) | 2010-09-17 | 2012-03-16 | 주식회사 아이엠텍 | Filter for multi-band antenna switching module |
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101265234B1 (en) | 2012-01-30 | 2013-05-16 | 쓰리에이로직스(주) | Nfc device |
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KR20170010598A (en) | 2017-02-01 |
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