CN108923813A - Radio-frequency apparatus - Google Patents
Radio-frequency apparatus Download PDFInfo
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- CN108923813A CN108923813A CN201711074656.8A CN201711074656A CN108923813A CN 108923813 A CN108923813 A CN 108923813A CN 201711074656 A CN201711074656 A CN 201711074656A CN 108923813 A CN108923813 A CN 108923813A
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- frequency apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- Computer Networks & Wireless Communication (AREA)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
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Abstract
The present invention, which discloses, provides a kind of radio-frequency apparatus, may include：The first antenna being formed in the redistribution layer of encapsulation and the second antenna；And it is formed at least one conductive trace in the redistribution layer of the encapsulation, at least one described conductive trace is independently of the first antenna and second antenna, wherein the first antenna is transmitter antenna, second antenna is receiver antenna, and at least one conductive trace is sized and positioned to capture the energy from the first antenna.The undesirable coupling of antenna holder of radio-frequency apparatus can be reduced by implementing the embodiment of the present invention.
Description
【Technical field】
The present invention relates to field of communication technology, espespecially a kind of radio-frequency apparatus.
【Background technique】
Wave frequency from 3kHz to 300GHz is sometimes referred to as radio frequency (Radio Frequency, RF).RF signal is
It is used for many applications, such as communication and radar.Some radio-frequency apparatus use antenna.
【Summary of the invention】
The embodiment of the present invention provides radio-frequency apparatus, can reduce the undesirable coupling of the antenna holder of radio-frequency apparatus.
First embodiment according to the present invention provides a kind of radio-frequency apparatus, may include：It is formed in the redistribution layer of encapsulation
In first antenna and the second antenna；And it is formed at least one conductive trace in the redistribution layer of the encapsulation,
At least one described conductive trace is independently of the first antenna and second antenna, wherein the first antenna is transmitter
Antenna, second antenna be receiver antenna, and at least one conductive trace is sized and positioned to catch
Obtain the energy from the first antenna.
Second embodiment according to the present invention provides another radio-frequency apparatus, may include：Moulding layer；It is embedded in moulding layer
Interior chip；It is coupled to the redistribution layer of the chip；The antenna being formed in the redistribution layer；And described in being formed in again
Conductive trace in Distribution Layer, the size of the conductive trace and position are provided for capturing from the energy of antenna transmission
A part.
By embodiment described above, the embodiment of the present invention captures the energy from antenna transmission by conductive trace, thus
The undesirable coupling of the antenna holder of radio-frequency apparatus can be reduced.
【Detailed description of the invention】
Fig. 1 shows the block diagram of illustrative radio frequency (RF) system 100 in accordance with some embodiments.
Fig. 2A shows the cross-sectional view of RF equipment 200 in accordance with some embodiments.
Fig. 2 B shows the top view of RF equipment 200 in accordance with some embodiments.
Fig. 2 C shows the top view of RF equipment 200 in accordance with some embodiments, and electromagnetic field point is presented in the top view
Cloth.
Fig. 2 D is the illustrative RF equipment 200 of Fig. 2A -2C and the ratio that figure is isolated of the RF equipment without any stub
Compared with figure.
Fig. 3 A shows the top view of illustrative RF equipment 300 in accordance with some embodiments.
Fig. 3 B is the illustrative RF equipment 300 of Fig. 3 A compared with without the isolation figure of the RF equipment of any stub
Figure.
Fig. 4 A shows the top view of illustrative RF equipment 400 in accordance with some embodiments.
Fig. 4 B is the illustrative RF equipment 400 of Fig. 4 A compared with without the isolation figure of the RF equipment of any stub
Figure.
Fig. 5 A shows the top view of illustrative RF equipment 500 in accordance with some embodiments.
Fig. 5 B is the illustrative RF equipment 500 of Fig. 5 A compared with without the isolation figure of the RF equipment of any stub
Figure.
Fig. 5 C is the enlarged drawing in the region gone out in Fig. 5 A with oval marks.
Fig. 6 A is the top view for showing RF equipment 600 in accordance with some embodiments.
Fig. 6 B is the figure compared with without the isolation figure of the RF equipment of any stub of RF equipment 600.
Fig. 7 shows in accordance with some embodiments for manufacturing the illustrative methods 700 of RF equipment described in the invention.
【Specific embodiment】
Some vocabulary has been used in specification and subsequent claim to censure specific component.Art technology
Personnel are, it is to be appreciated that hardware manufacturer may call the same component with different nouns.This specification and subsequent power
Benefit requires not in such a way that the difference of title is as component is distinguished, but with the difference of component functionally as differentiation
Criterion.In the whole text, the "comprising" of specification and subsequent claim mentioned in therefore is answered for the term of an open type
It is construed to " including but not limited to ".In addition, it includes any direct and indirect electrical connection that " coupling " word, which is herein,
Therefore, if it is described herein that one first equipment is coupled to one second equipment, then this can be directly electrically connected in by representing first equipment
Second equipment, or be electrically connected indirectly by other equipment or connection means to second equipment.
Inventor has realized that and recognizes that radio frequency (RF) equipment may include compact arranged mutiple antennas.For example,
The distance between adjacent antenna can be 0.5mm (millimeter) to 8mm.In another example, the distance between adjacent antenna can be with
Within 0.05 λ to 10 λ, wherein λ corresponds to the wavelength of the operating frequency of antenna.Finally, it may be deposited between mutiple antennas
In electromagnetic coupling, this may be decreased the performance of RF equipment.For example, the first antenna in RF equipment can be used for sending signal, and
And the second antenna in same RF equipment can be used for receiving signal.When transmitter antenna is connected, transmitter antenna be may lead
Electromagnetic field.Since receiver antenna is located near transmitter antenna, receiver antenna may be captured and be sent out by transmitter antenna
The some power penetrated, this may reduce the performance of receiver antenna.For example, receiver antenna may be saturation and be to decline
Subtract, this will lead to the signal-to-noise ratio of deterioration.Inventor is also recognized that and recognizes, by by antenna be maintained at larger distance come
The miniaturization of RF equipment can be prevented by reducing the electromagnetic coupling between antenna.
Therefore, in some embodiments, the technology that can increase RF equipment performance without increasing package dimension is provided.Most
Eventually, in high frequency (for example, in 78GHz frequency band) work, RF equipment may have high-isolation (for example, small between antennas
In the power transmission of -30dB).In some embodiments, isolation can be represented as S21, i.e., be transmitted to and connect from transmitter antenna
The power of receipts machine antenna.In some embodiments, S21 can be measured by vector network analyzer.It in some embodiments, can be with
S21 is measured using known transmitter antenna and known receiver antenna.One of these technologies a variety of can be used for
It is widely applied, including for example for the communication of automobile and sensor device, mobile device is (for example, smart phone and plate electricity
Brain), radar and Internet of Things (Internet of Things, IoT).
The present inventors have realized that and recognize that one or more conductive traces can be included in RF equipment, and
And conductive trace size and position can be set for use as energy wells (energy trap) so that from first antenna transmit
Energy it is a part of may be captured to reduce between the second antenna and first antenna undesirable couple.The present inventor
It is further recognized by and, it is realized that the size of one or more conductive trace and position can be set, so that keeping the
Inhibit second while performance parameter (for example, antenna gain, reflection coefficient, radiation diagram and efficiency) of one antenna and the second antenna
Undesirable coupling between antenna and first antenna.
In some embodiments, RF equipment may include being formed in redistribution layer (redistribution layer, RDL)
Interior multiple conductive traces.One or more conductive traces can be configured as one or more antennas.It is one or more of the other
Conductive trace can be configured to from antenna trapping energy.Being configured to herein can be by from the conductive trace of antenna trapping energy
Referred to as stub (stub).
In some embodiments, stub can have open end (open end) and be connected to the other end of reference potential
End, the reference potential can be ground, DC voltage or another suitable reference potential.In some embodiments, Mei Getian
Line can have associated ground loop, and there may be at least one cutting backs that associated ground loop is shared with antenna
Line.In some embodiments, multiple stubs can share identical ground loop with antenna.
In some embodiments, one or more stubs can be placed on a pair of of transmitter and receiver in RF equipment
The outside (assuming that between transmitter and receiver antenna) of antenna.It alternatively or additional part, can be in transmitter
One or more stubs are placed between receiver antenna.
In some embodiments, one or more stubs can be parallel to transmitter or receiver antenna in RF equipment
Feeder line place.Alternatively, can be placed in RF equipment perpendicular to the feeder line of transmitter or receiver antenna one or more short
Transversal.Alternatively or additional part, one or more stubs can be relative to the transmitters or receiver in RF equipment
The feeder line of antenna is placed at a certain angle.
In some embodiments, one in the transmitter and receiver antenna in RF equipment can have at least one phase
Associated stub, and another antenna in the transmitter and receiver antenna in RF equipment may be without any associated
Stub.
Fig. 1 shows the block diagram of illustrative radio frequency (RF) system 100 in accordance with some embodiments.RF system 100 can be with
Including transmitter path 102 and receiver path 112.In transmitter path, carrier wave is can be generated in processor/controller 104
Signal, carrier signal can be sent to power amplifier (PA) 108 by transmitter front ends 106, and carrier signal can be by PA
It is amplified and coupled to transmitter antenna 110.Transmitter front ends may include such as one or more filters and/or frequency mixer it
The circuit of class.In receiver path, receiver antenna 120 can capture the letter that can be amplified by low-noise amplifier (LNA) 118
Number.The signal of amplification can be sent to processor/controller 104 by receiver front end 116.Receiver front end may include all
Such as one or more filters and/or the circuit of frequency mixer (for example, down-conversion mixer).
In some embodiments, RF system 100 may include illustrative RF equipment 200.Fig. 2A is shown according to some
The cross-sectional view of the RF equipment 200 of embodiment.RF equipment 200 may include the chip 202 encapsulated by moulding layer 204, the first He
Second redistribution layer (RDL) 208 and 212 and the first, the second and third dielectric layer 206,210 and 214, described the first, the
Two and third dielectric layer 206,210 and 214 be used for the chip 202 and first and second redistribution layer 208 and 212
Isolation.First and second RDL 208 and 212 can be substantially aligned along the direction z.The surface of chip 202 and the table of moulding layer 204
Face can be located in identical plane 216.Plane 216 can be parallel to the x-y plane vertical with the direction z.First and second RDL
208 and 212 can be by aluminium, and copper, tungsten, golden or any other suitable conductive material or any amount of conductive material are with any conjunction
Suitable combination is formed.In some embodiments, the first and second RDL 208 and 212 can be by same or different conduction
Material is formed.The first RDL 208 can be formed to provide the electric pathway of access chip 202.The 2nd RDL 212, definition weldering can be formed
The pad of ball 218.Chip 202 can be interconnected by the metal layer 220 on soldered ball and PCB 222.Although showing in this example
Two RDL, but it is to be understood that the present invention is not limited thereto.RF equipment 200 may include one, three or any suitable
The RDL of quantity.
In some embodiments, chip 202 can be IC chip.For example, in some embodiments, chip 202
It can be monolithic integrated microwave circuit (MMIC) chip for microwave engineering process.In some embodiments, chip 202 can be with
Combination including any amount of circuit or interlock circuit, as described in Figure 1, the circuit include for example illustrative transmitter
Front end (front end TX) 106, illustrative power amplifier (PA) 108, illustrative receiver front end (front end RX) 116, example
The LNA118 and/or illustrative processor/controller 104 of property.
As shown in Figure 2 A, in some embodiments, transmitter antenna 110 and receiver antenna 120 can be formed in first
In RDL 208.Transmitter antenna 110 can be spaced apart along the y direction vertical with the direction z with receiver antenna 120.Stub
224 can also be formed in the first RDL 208.As shown in Figure 2 B, each stub can have open end 226 (226b) and connect
It is connected to the end 228 (228b) of 230 (230b) of ground.Each antenna may include antenna element 232 and be connected to antenna element
Feeder line 234.Feeder line 234 can have the first end 238 for being connected to ground connection 230, be connected to the defeated of chip 202 for example, by through-hole
The second end 236 of outlet and the third end 240 for being connected to antenna element 232.
According to expected application, the radio wave tuned antenna with wavelength X can be used.For example, in anticollision application
In (for example, parking of automobile assistant, automotive vehicle, domestic robot etc.), it to be used for the middle RF apart from radar (for example, 10-40 meters)
Equipment can operate on 24GHz frequency band, and the radio-frequency apparatus for being used for long range radar (for example, 100-150 meters) can be adjusted
It is humorous to arrive 78GHz frequency band.The present inventors have realized that and, it is realized that being acted as to make stub be effective as energy wells
With, it may be necessary to size setting is carried out to stub, so that the length between open end and the end for being connected to ground is substantially
Equal to the odd-multiple of λ/4, such as λ/4,3 λ/4,5 λ/4 etc..The specific setting of size, can be based on stub characteristic, such as when
Stub one end keeps open circuit, and other end stub is to ground, then active length is about the odd-multiple of λ/4.However, the present invention is simultaneously
It is without being limited thereto.Stub may have any suitable length.
In the example shown in Fig. 2 B, transmitter antenna 110 has stub 224a (conductive trace), with transmitter day
Line 110 shares ground terminal 230a.Ground terminal 230a can be essentially around transmitter antenna.Equally, the example shown in Fig. 2 B
In, receiver antenna 120 has the stub 224b (conductive trace) that ground terminal 230b is shared with receiver antenna 120.Ground connection
Hold 230b can be essentially around receiver antenna 120.In the embodiment of above-mentioned example, ground terminal 230a and 230b difference
Substantially surrounded by transmitter antenna and receiver antenna.However, the present invention is not limited thereto.Ground terminal can have any suitable
Shape and length.The open end 226a of stub 224a can be directed toward the open end 226b of stub 226b.Stub 224a
The distance between 224b can be greater than the distance between transmitter antenna and receiver antenna.In some embodiments, emit
Machine antenna 110 can be spaced apart with receiver antenna 120 in y-direction.Stub 224a and 224b can extend in the y-direction.
Although exemplary antenna shown in Fig. 2A -2B has I shape type, it should be understood that the present invention is not limited thereto.It
Line can be any suitable type, including such as dipole, file dipole, annular, straight-flanked ring and patch.Although scheming
In embodiment shown in 2A-2B, each antenna has an associated stub, it should be understood that the invention is not limited thereto.One
A antenna can have multiple associated stubs in different location.In some embodiments, multiple stubs can have
Identical length can have different length.Although showing two antennas 110 and 120, but it is to be understood that this hair
It is bright without being limited thereto.One RF equipment may include any appropriate number of antenna, such as one, three, four or more days
Line.Although antenna shown in can be transmitter antenna 110 and receiver antenna 120, but it is to be understood that the present invention is not limited to
This.One RF equipment can only include one or more transmitter antennas, or only include one or more receiver antennas, or
Any appropriate number of transmitter antenna and any appropriate number of receiver antenna combination.Although in these examples, cutting back
Line has rectangular shape, but it is to be understood that the invention is not limited thereto.Various stubs can have any suitable shape,
Including for example oval, polygon and/or triangle.
In some embodiments, when transmitter antenna 110 connects (turn on), transmitter antenna can cause such as figure
Magnetic distribution shown in 2C.The intensity of electromagnetic field can be proportional to the intensity of the radio wave of transmitting.It can be in stub
The open end of 224a and 224b increases the intensity of electromagnetic field, for showing what conductive trace attraction was radiated by transmitter antenna 110
A part of energy.As a result, being reduced by the energy that receiver antenna 120 couples.
Fig. 2 D is the illustrative RF equipment 200 of Fig. 2A -2C and the ratio that figure is isolated of the RF equipment without any stub
Compared with figure.Parameter S21 in isolation figure indicates the power that receiver antenna 120 is transmitted to from transmitter antenna 110.Curve 241 shows
The isolation performance of the RF equipment without any stub is gone out.Curve 242 shows the isolation performance of RF equipment 200.Work as curve
241 more than -30dB, and is lower than -30dB in 242 frequency range shown in of curve, this shows that the isolation between antenna improves.
Under identical package dimension, compared to the RF equipment of no any stub, RF equipment 200 can provide changing for average 10dB
It is kind.Although shown example, which shows curve 242, has slot/recess 244 in 78GHz, but it is to be understood that the present invention is not
It is limited to this.The present inventors have realized that and recognizing that conductive trace can be according to intended application come scale cun and positioning.Example
Such as, may include have multiple stubs of different length with different frequency bands (for example, the first slot/recess at 24GHz and
The second slot of 78GHz/recess) at generate slot/recess.
In some embodiments, slot/recess depth can be in the range of 1dB to 200dB.In some embodiments,
Slot/recess depth can be in the range of 2dB to 100dB.In some embodiments, slot/recess depth can 5dB extremely
In the range of 20dB.For example, slot/recess 244 has the depth of about 9.5dB in the example shown in Fig. 2 D.
In some embodiments, in the range of 1dB to 200dB, slot/recess minimum point can be less than -30dB.One
In a little embodiments, in the range of 2dB to 100dB, slot/recess minimum point can be less than -30dB.In some embodiments,
In the range of 5dB to 20dB, slot/recess minimum point can be less than -30dB.For example, in the example shown in Fig. 2 D, slot/
The minimum point 246 of recess 244 is about 11.9dB lower than -30dB.
Fig. 3 A shows the top view of illustrative RF equipment 300 in accordance with some embodiments, and RF equipment 300 includes being placed on
Stub at optional position.In some embodiments, RF equipment 300 can have and illustrative RF shown in Fig. 2A -2B
The identical package dimension of equipment 200.RF equipment 300 and RF equipment 200 the difference is that, show in stub 324a and Fig. 2 B
The stub 224a of example property is in different positions, stub 324b and Fig. 2 B on the direction x vertical from the direction y and the direction z
In illustrative stub 224b different positions is on the direction x vertical from the direction y and the direction z, in addition, in figure 3 a
Antenna 310 further includes feeder line 334a, and antenna 320 further includes feeder line 334b.
Fig. 3 B is the illustrative RF equipment 300 of Fig. 3 A compared with without the isolation figure of the RF equipment of any stub
Scheme, the improvement of the isolation between antenna is shown in figure.Parameter S213 in isolation figure indicates to be transferred to antenna 320 from antenna 310
Power.Curve 342 shows the isolation performance of RF equipment 300.With curve 242 shown in Fig. 2 D the difference is that, it is bent
It includes slot/recess that line 342 is in about 81GHz.Therefore, it by adjusting the position of one or more stubs, may be implemented
The isolation performance improved in different frequency scope.
Fig. 4 A shows the top view of illustrative RF equipment 400 in accordance with some embodiments, and RF equipment 400 includes being placed on
Stub at optional position.In this example, stub 424a and 424b is placed between antenna 410 and antenna 420.(phase
Instead, in the example shown in Fig. 2 B, stub 224a and 224b are placed on the outside of antenna 110 and antenna 120.) some
RF equipment 400 can have package dimension identical with exemplary RF equipment 200 shown in Fig. 2A -2B in embodiment, in addition,
Antenna 410 further includes feeder line 434a in Fig. 4 A, and antenna 420 further includes feeder line 434b.
Fig. 4 B is the illustrative RF equipment 400 of Fig. 4 A compared with without the isolation figure of the RF equipment of any stub
Scheme, the improvement of the isolation between antenna is shown in figure.Parameter S214 in isolation figure indicates to be transmitted to antenna 420 from antenna 410
Power.Curve 442 shows the isolation performance of RF equipment 400.
Fig. 5 A shows the top view of illustrative RF equipment 500 in accordance with some embodiments, and RF equipment 500 includes being placed on
Stub at optional position.In this example, stub 524 is substantially perpendicular to corresponding feeder line (as shown in Figure 5 C).(phase
Instead, in the example shown in Fig. 2 B, stub 224 is arranged essentially parallel to corresponding feeder line).In some embodiments, antenna 510
It can be spaced apart in y-direction with antenna 520.Stub 524a and 524b can extend in the x-direction.In some embodiments,
Stub can be placed at a certain angle relative to the direction y.In some embodiments, RF equipment 500 can have and Fig. 2A -2B
Shown in the identical package dimension of exemplary RF equipment 200.
Fig. 5 B is the illustrative RF equipment 500 of Fig. 5 A compared with without the isolation figure of the RF equipment of any stub
Scheme, the improvement of the isolation between antenna is shown in figure.Parameter S215 expression in isolation figure is transmitted to from transmitter antenna 510 to be connect
The power of receipts machine antenna 520.Curve 542 shows the isolation performance of RF equipment 500.In addition in about 78GHz, there are slots/recessed
Except mouthful, curve 542 continues to decline after more than 80GHz.It therefore, can be with by adjusting the orientation of one or more stubs
Realize the isolation performance improved in multiple frequency ranges.
Fig. 6 A is the top view for showing RF equipment 600 in accordance with some embodiments, and RF equipment 600 includes having stub
The antenna 610 of 624a and antenna 620 without stub.Fig. 6 B is RF equipment 600 and the RF equipment without any stub
Isolation figure comparison figure.Parameter S216 in isolation figure indicates the power that antenna 620 is transferred to from antenna 610.Curve 642 shows
The isolation performance of RF equipment 600 is gone out.Under identical package dimension, compared to the RF equipment of no any stub, RF is set
Standby 600 can provide the average improvement of about 3dB.
Fig. 7 shows in accordance with some embodiments for manufacturing the illustrative methods 700 of RF equipment described in the invention.
Method 700 can start in step 702, in step 702, provide the chip in moulding layer.In some embodiments, moulding layer can
To be the mold compound nitride layer for packaging.The surface of chip and the surface of moulding layer can be in the same plane.In step
704, the first redistribution layer can be deposited on the surface of chip and the surface of moulding layer.In step 706, can divide again first
With forming antenna, ground terminal and conductive trace in layer.In some embodiments, it can be formed by the first redistribution layer of etching
Antenna, ground terminal and conductive trace.Antenna may include antenna element and feeder line.Feeder line, which can have, is connected to first end
First end is connected to the second end of second end and is connected to the third end of antenna element.In some embodiments, first end
It can be the first output end of chip, second end can be the second output terminal of chip.In some embodiments, first end
It can be ground terminal, and second end can be the output end of chip.Stub may include an open end and be connected to ground
End.
The various aspects of equipment and technology described herein can be used alone, or be applied in combination, or in previously mentioned
Not specifically discussed various arrangements use in the embodiment of description, therefore are not limited to details in its application and are arranged in aforementioned retouch
The component stating middle elaboration or being shown in the accompanying drawings.For example, the aspect described in one embodiment can with other embodiments
Described in aspect combine in any way.
Term " about ", " substantially " and " about " can be used in some embodiments in ± the 20% of target value ±
It is in some embodiments in some embodiments ± the 2% of target value ± the 10% interior ± 5% of target value in 20%, but
It is in some embodiments ± the 2% of target value.
Such as " first " is used in the claims, " second ", the ordinal term of " third " etc. carrys out modification right and requires member
Element is not meant to priority of the claim elements relative to another, priority or sequence in itself or executes method
The time sequencing of step, and it is only used as label, there will be a claim elements of some title identical as having
Another element (but being used for ordinal number item) of title distinguishes, to distinguish claim elements.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to the claims in the present invention with repair
Decorations, are all covered by the present invention.
Claims (18)
1. a kind of radio-frequency apparatus, which is characterized in that including：
The first antenna being formed in the redistribution layer of encapsulation and the second antenna；And
At least one conductive trace being formed in the redistribution layer of the encapsulation, at least one described conductive trace are independent
In the first antenna and second antenna, wherein the first antenna is transmitter antenna, second antenna is to receive
Machine antenna, and at least one conductive trace is sized and positioned to capture the energy from the first antenna
Amount.
2. radio-frequency apparatus as described in claim 1, which is characterized in that wherein the first antenna and second antenna are located at
The same side of each conductive trace.
3. radio-frequency apparatus as described in claim 1, which is characterized in that further include：First ground terminal and the second ground terminal, it is described
At least one conductive trace includes the first conductive trace and the second conductive trace, wherein first conductive trace be connected to it is described
First ground terminal, and second conductive trace is connected to second ground terminal.
4. radio-frequency apparatus as described in claim 1, which is characterized in that the RF equipment is tuned to wavelength X, and described at least one
A conductive trace has open end and is connected to the end of ground terminal, and the open end and the end for being connected to ground terminal it
Between length be equal to λ/4 odd-multiple.
5. radio-frequency apparatus as described in claim 1, which is characterized in that each in the first antenna and second antenna
A includes antenna element and feeder line, and the distance between antenna element of the first antenna and second antenna is greater than institute
State the distance between the feeder line of first antenna and second antenna.
6. radio-frequency apparatus as claimed in claim 4, which is characterized in that between the first antenna and second antenna every
From correspond to the wavelength X frequency at include recess.
7. radio-frequency apparatus as claimed in claim 6, which is characterized in that the minimum point of the recess is less than -35dB.
8. a kind of radio-frequency apparatus, which is characterized in that including：
Moulding layer；
The chip being embedded in moulding layer；
It is coupled to the redistribution layer of the chip；
The antenna being formed in the redistribution layer；And
The conductive trace being formed in the redistribution layer, the size of the conductive trace and position be provided for capture from
A part of the energy of antenna transmission.
9. radio-frequency apparatus as claimed in claim 8, which is characterized in that the chip includes transmitter and/or receiver.
10. radio-frequency apparatus as claimed in claim 8, which is characterized in that the antenna includes antenna element and feeder line, the feedback
Line includes first end, second end and third end, wherein the first end is connected to by the first defeated of ground terminal and the chip
One in one group of end of outlet composition, the second end is connected to the second output terminal of the chip, the third end connection
To the antenna element, and the conductive trace includes open end and the end for being connected to the ground terminal.
11. radio-frequency apparatus as claimed in claim 8, which is characterized in that wherein the conductive trace is parallel to the feeder line.
12. radio-frequency apparatus as claimed in claim 8, which is characterized in that the conductive trace is perpendicular to the feeder line.
13. radio-frequency apparatus as claimed in claim 8, which is characterized in that the conductive trace includes open end and is connected to ground
The end in face, the antenna are tuned to wavelength X, and the length between the open end of the conductive trace and the end for being connected to ground
Degree is equal to the odd-multiple of λ/4.
14. radio-frequency apparatus as claimed in claim 8, which is characterized in that the conductive trace is the first conductive trace, described to penetrate
Frequency equipment includes the multiple conductive traces being formed in the redistribution layer, and each of the multiple conductive trace includes opening
It puts end and is connected to the end of ground terminal, wherein the multiple conductive trace includes first conductive trace.
15. radio-frequency apparatus as claimed in claim 14, which is characterized in that the first conductive trace tool selectable first is long
Degree is to improve the isolation performance within the scope of first frequency, and the second conductive trace in the multiple conductive trace has difference
In the second length of first length, second length is chosen so as to improve the second frequency different from first frequency range
Isolation performance in range.
16. radio-frequency apparatus as claimed in claim 10, which is characterized in that the antenna is first antenna, the antenna element
Part is first antenna element, and the feeder line is the first feeder line, and the chip is transmitter chip, and the ground terminal is the first ground connection
End, the radio-frequency apparatus further include：
The second antenna being formed in the redistribution layer, second antenna include the second antenna element and the second feeder line, institute
Stating the second feeder line includes first end, second end and third end, wherein the first end of second feeder line is connected to by
One in one group of end that two ground terminals and the first output end for receiving chip form, the second end is connected to the reception core
The second output terminal of piece, the third end are connected to second antenna element.
17. radio-frequency apparatus as claimed in claim 16, which is characterized in that second including being formed in the redistribution layer leads
Electric trace, the second conductive trace include open end and the end for being connected to second ground terminal.
18. radio-frequency apparatus according to claim 17, which is characterized in that first conductive traces and second conduction
The distance between trace is greater than the distance between the first antenna element and second antenna element.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762506637P | 2017-05-16 | 2017-05-16 | |
| US62/506,637 | 2017-05-16 | ||
| US15/685,885 | 2017-08-24 | ||
| US15/685,885 US10615494B2 (en) | 2016-09-08 | 2017-08-24 | Coupling reduction method for antennas in package |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108923813A true CN108923813A (en) | 2018-11-30 |
| CN108923813B CN108923813B (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711074656.8A Active CN108923813B (en) | 2017-05-16 | 2017-11-03 | Radio frequency device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108923813B (en) |
| TW (1) | TWI702810B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011103629A (en) * | 2009-11-12 | 2011-05-26 | Samsung Electronics Co Ltd | Antenna device, and wireless communication apparatus having the same |
| EP2416444A2 (en) * | 2010-07-15 | 2012-02-08 | Sony Ericsson Mobile Communications AB | Multiple-input multiple-output (MIMO) multi-band antennas with a conductive neutralization line for signal decoupling |
| US20130017653A1 (en) * | 2009-01-30 | 2013-01-17 | Infineon Technologies Ag | Integrated Antennas in Wafer Level Package |
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| US7973729B2 (en) * | 2006-08-08 | 2011-07-05 | Sensormatic Electronics, LLC | Thin-film EAS and RFID antennas |
| JP2012231417A (en) * | 2011-04-27 | 2012-11-22 | Fujitsu Component Ltd | Antenna device and electronic apparatus |
| US8866292B2 (en) * | 2012-10-19 | 2014-10-21 | Infineon Technologies Ag | Semiconductor packages with integrated antenna and methods of forming thereof |
| US9490536B2 (en) * | 2013-12-17 | 2016-11-08 | Amazon Technologies, Inc. | Multi-band antenna |
| US9774079B2 (en) * | 2014-04-08 | 2017-09-26 | Microsoft Technology Licensing, Llc | Capacitively-coupled isolator assembly |
| US9496614B2 (en) * | 2014-04-15 | 2016-11-15 | Dockon Ag | Antenna system using capacitively coupled compound loop antennas with antenna isolation provision |
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| US20130017653A1 (en) * | 2009-01-30 | 2013-01-17 | Infineon Technologies Ag | Integrated Antennas in Wafer Level Package |
| JP2011103629A (en) * | 2009-11-12 | 2011-05-26 | Samsung Electronics Co Ltd | Antenna device, and wireless communication apparatus having the same |
| EP2416444A2 (en) * | 2010-07-15 | 2012-02-08 | Sony Ericsson Mobile Communications AB | Multiple-input multiple-output (MIMO) multi-band antennas with a conductive neutralization line for signal decoupling |
Also Published As
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| TW201902155A (en) | 2019-01-01 |
| CN108923813B (en) | 2020-11-27 |
| TWI702810B (en) | 2020-08-21 |
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