CN105375943B - Radio-frequency unit and radio communication device - Google Patents
Radio-frequency unit and radio communication device Download PDFInfo
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- CN105375943B CN105375943B CN201410436108.5A CN201410436108A CN105375943B CN 105375943 B CN105375943 B CN 105375943B CN 201410436108 A CN201410436108 A CN 201410436108A CN 105375943 B CN105375943 B CN 105375943B
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Abstract
A kind of radio-frequency unit and radio communication device.Radio-frequency unit is used for radio communication device, and radio-frequency unit includes antenna, and the antenna includes radiant body and signal is burst into component；Capacitive sensing component；Connection component, the connection component include first end, the second end and the 3rd end of mutual conduction, and the first end is electrically connected at radiant body；Direct current barrier components, the direct current barrier components are electrically connected between the second end of connection component and signal feed-in component；And sensing accessory part, the sensing accessory part are electrically connected between the 3rd end of connection component and capacitive sensing component, the sensing accessory part includes high frequency barrier components；And an at least electric capacity, at least an electric capacity is connected with high frequency barrier components and is electrically connected between the 3rd end of connection component and capacitive sensing component for this.The present invention can be avoided influenceing the radiation efficiency of antenna, further be reduced design and production cost using the environmental capacitance value of the radiant body sensing particular range of antenna.
Description
Technical field
The present invention relates to a kind of radio-frequency unit and radio communication device, espespecially a kind of radiation effect for avoiding influenceing antenna
Rate, and design and production cost while the radio-frequency unit and radio communication device that may achieve modularized design can be reduced.
Background technology
Radio communication device is launched by antenna or receives radio wave, to transmit or exchange radio signal, Jin Erfang
Ask a wireless communication system.Radio wave is a kind of string ripple signal of higher-order of oscillation, therefore countries in the world have for its energy
Certain specification, main purpose are the runnings for avoiding impacting user or disturbing other radio communication devices.Citing comes
Say, the international non-free radiation protection committee (International Commission on Non-Ionizing
Radiation Protection) suggest that the value of human body specific absorption rate (Specific Absorption Rate, SAR) should not
More than 2.0W/Kg, and FCC (Federal Communications Commission, FCC) then suggests
No more than 1.6W/Kg.Human body specific absorption rate refers to that organism unit mass is to electromagnetic wave energy in general electromagnetic radiation environment
Absorptivity, this numerical value is used as unit using W/Kg.In addition, the environment that different communication product is applied is different, therefore can enter
One step considers distance factor, for example, for hand-held radio communication devices such as mobile phone, intelligent mobile phones, usually provides
SAR value must be tested during apart from human body 20cm.
As known in the art, antenna effect will certainly be influenceed by reducing the external interference (i.e. SAR value) of radio communication device
Can, therefore in order to maintain antenna performance simultaneously, known technology has pointed out many modes, and one of them is exactly use close to inductor
Come sense human body close to situation；That is, when detecting human body proximity close to inductor, wireless energy signal is reduced,
And when being not detected by human body proximity close to inductor, then maintain or properly increase wireless energy signal.In this case, can be same
When take into account reduction interference and maintain two kinds of demands of antenna performance.It is well known, however, that it need to be included with metal material close to inductor
Receiver or sensor, to sense the capacitance variations of human body proximity, so as to judge human body proximity situation.This additional receiver
Or sensor can have an impact to antenna efficiency, cause working band to narrow, in other words, originally suitable for the antenna of wideband requirements
Because of additional receiver or sensor working band can be caused to narrow.In this case, for adjacent frequency bands demand
Different communication systems, it is necessary to separately design applicable antenna, in addition to increase design and production cost, for part management also not
Profit.
Therefore, known technology has improved necessity in fact.
It is thus desirable to provide a kind of radio-frequency unit and radio communication device solve the above problems.
The content of the invention
Therefore, the main object of the present invention is to provide a kind of radio-frequency unit and radio communication device, disturbed with reduction,
Antenna performance is maintained, the size of radio-frequency unit is reduced and reaches modularization.
The present invention discloses a kind of radio-frequency unit, and the radio-frequency unit is used for a radio communication device, and the radio-frequency unit includes：One
Antenna, the antenna include：One radiant body；And a signal feed-in component, the signal feed-in component are used for receiving and dispatching a radiofrequency signal；
One capacitive sensing component, the capacitive sensing component are used for sensing an environmental capacitance value of a particular range；One connection component,
A first end, one second end and one the 3rd end, first end that the connection component includes mutual conduction are electrically connected at the radiation
Body；Barrier components are flowed always, and the direct current barrier components are electrically connected at second end and signal feed-in group of the connection component
Between part, for blocking a DC signal path at second end of the connection component and the signal feed-in component；And one sense
Answer accessory part, the sensing accessory part be electrically connected at the 3rd end of the connection component and the capacitive sensing component it
Between, the sensing accessory part includes：One high frequency barrier components, the high frequency barrier components are used for blocking the 3rd of the connection component
End and a high-frequency signal path of the capacitive sensing component, to avoid the radiofrequency signal from disturbing the capacitive sensing component；With
And an at least electric capacity, an at least electric capacity are connected with the high frequency barrier components and are electrically connected at the 3rd end of the connection component
Between the capacitive sensing component, for reducing the connection component to an equivalent capacity of the radiant body；Wherein, the signal is presented
Enter component and be coupled to the radiant body by the direct current barrier components and the connection component, believed with receiving and dispatching the radio frequency by the radiant body
Number；Wherein, the capacitive sensing component is coupled to the radiant body by the high frequency barrier components and the connection component, to pass through this
Radiant body senses the environmental capacitance value of the particular range.
Invention additionally discloses a kind of radio communication device, the radio communication device includes：One radio frequency signal processing equipment, should
Radio frequency signal processing equipment is used for producing a radiofrequency signal, and senses result according to one, adjusts the energy of the radiofrequency signal；And
One radio-frequency unit, the radio-frequency unit include：One antenna, the antenna include：One radiant body；And a signal feed-in component, the letter
Number feed-in component is used for receiving and dispatching a radiofrequency signal；One capacitive sensing component, the capacitive sensing component are specific for sensing one
One environmental capacitance value of scope, to produce the sensing result；One connection component, the connection component include the one first of mutual conduction
End, one second end and one the 3rd end, the first end are electrically connected at the radiant body；Barrier components are flowed always, the direct current barrier group
Part is electrically connected between second end of the connection component and the signal feed-in component, for block the connection component this
Two ends and a DC signal path of the signal feed-in component；And a sensing accessory part, the sensing accessory part electrically connects
It is connected between the 3rd end of the connection component and the capacitive sensing component, the sensing accessory part includes：One high frequency obstructs
Component, the high frequency barrier components are used for blocking the 3rd end of the connection component with a high-frequency signal of the capacitive sensing component
Path, to avoid the radiofrequency signal from disturbing the capacitive sensing component；And an at least electric capacity, an at least electric capacity and the high frequency
Barrier components are connected and are electrically connected between the 3rd end of the connection component and the capacitive sensing component, for reducing this
Connection component to the radiant body an equivalent capacity；Wherein, the signal feed-in component passes through the direct current barrier components and the connection
Component is coupled to the radiant body, to receive and dispatch the radiofrequency signal by the radiant body；Wherein, the capacitive sensing component passes through the height
Frequency barrier components and the connection component are coupled to the radiant body, to sense the environmental capacitance of the particular range by the radiant body
Value.
The present invention senses the environmental capacitance value of particular range using the radiant body of antenna, and adjusts wireless signal energy according to this
Amount, thus can avoid influenceing the radiation efficiency of antenna, meanwhile, only it need to design that single antenna is i.e. applicable to have adjacent frequency bands demand
Different communication systems, can further reduce design and production cost, and be advantageous to part management so that radio-frequency unit reaches small
Size, high efficiency, environmental suitability be high and the characteristic of low interference.In addition, the present invention may achieve modularized design, to reduce production
Cost, and improve packaging efficiency.
Brief description of the drawings
Fig. 1 is the schematic diagram of a radio communication device of the embodiment of the present invention.
Fig. 2 is the schematic diagram of a link block of the embodiment of the present invention.
Fig. 3 A, Fig. 3 B, the one first signal line length that Fig. 3 C are Fig. 2 are 200 millimeters and install the electricity before and after link block
Press standing wave when antenna efficiency schematic diagram.
Fig. 4 A, Fig. 4 B, the first signal line length that Fig. 4 C are Fig. 2 are 600 millimeters and install the voltage before and after link block
Standing wave when antenna efficiency schematic diagram.
Fig. 5 is the schematic diagram of a link block of the embodiment of the present invention.
Fig. 6 A, Fig. 6 B are the voltage standing wave ratio schematic diagram before and after installing Fig. 5 link block.
Primary clustering symbol description：
10 radio communication devices
100 radio frequency signal processing equipments
102 radio-frequency units
106 antennas
108 radiant bodies
110 signal feed-in components
112nd, 212,512 sensing accessory part
114 capacitive sensing components
116th, 216,516 electric capacity
118th, 218,518 direct current barrier components
120th, 220,520 high frequency barrier components
122nd, 222,522 connection component
200 substrates
202 first signal wires
204 secondary signal lines
206 connecting interfaces
CAP_rst senses result
RF_sig radiofrequency signals
500th, 502,504 metal wire
T1~T3 ends
T1'~T3' end points
Embodiment
Interference and maintenance two kinds of demands of antenna performance are reduced in order to take into account, applicant in this case is in TaiWan, China patent application case
No. 100142160 provides a kind of radio-frequency unit and radio communication device for judging human body proximity situation, and it is not required to outer adjunction
Device or sensor are received, but utilizes the environmental capacitance value of the radiant body sensing particular range of antenna, therefore can avoid influenceing antenna
Radiation efficiency.Wherein, for different antennae framework, No. 100142160 disclosed a variety of electric capacity of TaiWan, China patent application case
The set-up mode of property inductive component, one of which is capacitive sensing component and signal feed-in component conode, and electric capacity is sexy
Component is answered (to refer to TaiWan, China patent application case the 100142160th by conode to be electrically connected at radiant body again
Fig. 2A, Fig. 2 C, Fig. 5, Fig. 8 and its content for corresponding to specification), to carry out the sensing of environmental capacitance value.In addition, applicant in this case
Also in TaiWan, China patent application case, No. 102113979 discloses a kind of radio-frequency unit and radio communication device, and it is to build on
On the framework that TaiWan, China patent application case the 100142160th, then increase directly between radiant body and signal feed-in component
Barrier components are flowed, to block radiant body to the DC signal path of signal feed-in component, and in radiant body and capacitive sensing
Increase high frequency barrier components between component, to block radiant body to the high-frequency signal path of capacitive sensing component.By increase
Direct current barrier components, the radio-frequency unit that TaiWan, China patent application case the 102113979th can avoid capacitive sensing component pair
Signal feed-in component is charged, and to prevent the situation of malfunction from occurring, and increases the distance of reaction of capacitive sensing component；And
By the high frequency input impedance of increase high frequency barrier components, then adjustable capacitance inductive component, to reduce capacitive sensing group
Influence of the part to antenna radiation efficiency.In this case, same section is passed through for capacitive sensing component and signal feed-in component
Point is connected to the framework of radiant body, if can more easily increase direct current barrier components and high frequency barrier components, it will help reduces
Production cost, and improve packaging efficiency.
Fig. 1 is refer to, Fig. 1 is the schematic diagram of a radio communication device 10 of the embodiment of the present invention.Radio communication device 10
Can be any electronic product with radio communication function, such as mobile phone, computer system, wireless access point device, it is simple
Slightly it is made up of a radio frequency signal processing equipment 100 and a radio-frequency unit 102.Radio frequency signal processing equipment 100 is used for producing
One radiofrequency signal RF_sig, and can be adjusted according to the sensing result CAP_rst for the environmental capacitance value that radio-frequency unit 102 is returned
Radiofrequency signal RF_sig energy.Radio-frequency unit 102 includes an antenna 106, a connection component 122, one sensing accessory part
112nd, a capacitive sensing component 114 and always stream barrier components 118.Antenna 106 includes a radiant body 108 and signal feedback
Enter component 110.Sensing accessory part 112 is electrically connected between connection component 122 and capacitive sensing component 114, and it is included
There are the electric capacity 116 and a high frequency barrier components 120 of series connection.Connection component 122 is a three-terminal assembly, thirdly end T1~T3 is mutual
Conducting, to be electrically connected with radiant body 108, direct current barrier components 118 and high frequency barrier components 120.Direct current barrier components 118 are used for
The second end T2 of connection component 122 and the DC signal path of signal feed-in component 110 are blocked, and high frequency barrier components 120 are then
For blocking the 3rd end T3 of connection component 122 to the high-frequency signal path of capacitive sensing component 114, to avoid radiofrequency signal
RF_sig interference capacitors inductive component 114.In addition, it is serially connected between high frequency barrier components 120 and capacitive sensing component 114
Electric capacity 116, it is used for reducing connection component 122 to the equivalent capacity of radiant body 108, to ensure that capacitive sensing component 114 can
Correctly by radiant body 108, the environmental capacitance value of particular range is sensed, and produce sensing result CAP_rst according to this.
Compare Fig. 1 radio-frequency unit 102 and TaiWan, China patent application case No. 102113979 and No. 100142160
Understand, the present invention be directed to capacitive sensing component 114 and signal feed-in component 110 to pass through same node (i.e. connection component
122) framework of radiant body 108 is connected to, and electric capacity 116 is added for this framework, it can strengthen capacitive sensing component 114
Induction sensitivity.As for signal feed-in component 110, capacitive sensing component 114, direct current barrier components 118, high frequency barrier group
Part 120 and the operational logic of radiant body 108 or it is realized and variation pattern, refer to TaiWan, China patent application case the
No. 102113979 and No. 100142160, herein only briefly.
In short, in radio communication device 10, capacitive sensing component 114 is felt using the radiant body 108 of antenna 106
Environmental capacitance value is answered, and sensing result CAP_rst is sent to radio frequency signal processing equipment 100, makes radio frequency signal processing equipment
100 adjust radiofrequency signal RF_sig energy according to this.In addition, direct current barrier components 118 are in capacitive character, it can be one or more
Electric capacity, coupler or other there is composite component of direct current barrier properties etc., to block radiant body 108 (via connection component
122) to the DC signal path of signal feed-in component 110, to avoid capacitive sensing component 114 to signal feed-in component 110
Charged, prevent the situation of malfunction from occurring, and the distance of reaction of capacitive sensing component 114 can be increased.And high frequency obstructs
Component 120 is in then inductive, its can be one or more inductance, connector, matching network (matching network) or its
He has composite component of high frequency barrier properties etc., to block radiant body 108 (via connection component 122) to capacitive sensing
The high frequency input impedance of the high-frequency signal path of component 114, thereby adjustable capacitance inductive component 114, to reduce capacitive character
Influence of the inductive component 114 to antenna radiation efficiency.In this case, penetrated when radio-frequency unit 102 need to be received and dispatched by radiant body 108
During frequency signal, for radiofrequency signal, high frequency barrier components 120 are equivalent to open circuit, that is, the past direction of capacitive sensing component 114
Input impedance can be considered infinitely great, thus do not influence the impedance matching of radiant body 108, therefore, the radiation efficiency of antenna not by
The influence of capacitive sensing component 114.Meanwhile for radiofrequency signal, direct current barrier components 118 are equivalent to short circuit, Yi Jizhi
Stream barrier components 118 do not influence the radiofrequency signal received and dispatched on radiant body 108.On the other hand, when capacitive sensing component 114 enters
During row sensing, for direct current signal, high frequency barrier components 120 are equivalent to short circuit, that is, the metal in high frequency barrier components 120
And its radiant body 108 being electrically connected with by connection component 122 is all as one that senses metal of capacitive sensing component 114
Point.Meanwhile for direct current signal, direct current barrier components 118 are equivalent to open circuit, that is, the direct current of capacitive sensing component 114
Signal is stopped without being charged to signal feed-in component 110 by direct current barrier components 118, therefore can avoid signal feed-in component
110 or capacitive sensing component 114 malfunction.
In addition, because radiant body 108 is used for transceiving radio frequency signal RF_sig, there is capacity effect in it between ground,
The detection sensitivity of capacitive sensing component 114 will be influenceed；Therefore, the present invention is by serial capacitance 116, to reduce connection component
122 to radiant body 108 equivalent capacity.Consequently, it is possible to capacitive sensing component 114 can be correctly special by radiant body 108, sensing
Determine the environmental capacitance value of scope.Wherein, electric capacity 116 except may be disposed at capacitive sensing component 114 and high frequency barrier components 120 it
Between it is outer, also may be disposed between high frequency barrier components 120 and the 3rd end T3 of connection component 122；Or electric capacity 116 can be
Be made up of multiple electric capacity, and can Arbitrary distribution between capacitive sensing component 114 and the 3rd end T3 of connection component 122,
This is all belonged to the scope of the present invention.
Therefore, radio communication device 10 is not required to increase receiver or sensor, but utilizes original in radio-frequency unit 102
Radiant body 108 carries out the sensing of environmental capacitance value.Consequently, it is possible to can not only avoid influenceing the radiation efficiency of antenna 106, also may be used
Reduce the size of radio communication device 10.Meanwhile for the different communication systems with adjacent frequency bands demand, it need to only design single
Antenna, thus design and production cost can be reduced, and be advantageous to part management.On the other hand, as shown in Figure 1, connection group
Part 122, sensing accessory part 112 and direct current barrier components 118 are arranged on adjacent position, therefore can be integrated in same module, with drop
Low production cost, and improve packaging efficiency.
For example, Fig. 2 is refer to, Fig. 2 is the schematic diagram of a link block 20 of the embodiment of the present invention.Link block 20
Include a substrate 200, a connection component 222, one sensing accessory part 212 and flow barrier components 218 always, it is with modularization
Mode is realized or substitutes Fig. 1 connection component 122, senses accessory part 112 and direct current barrier components 118, and passes through one first
Signal wire 202, a secondary signal line 204 and a connecting interface 206 and connect radiant body 108 and signal feed-in component 110.In detail
For, substrate 200 can be a circuit board, thereon formed with connection component 222, and be provided with sensing accessory part 212 and direct current
Barrier components 218, and sense an electric capacity 216 and a high frequency barrier components 220 that accessory part 212 includes series connection.Connection group
Part 222 is metallic conductor, thirdly end T1~T3 mutual conductions, and the second end T2 connection direct currents barrier components 218 and turn into end points
T2', the 3rd end T3 connections sense accessory part 212 and turn into end points T3', and end points T3' is used for connecting capacitive sensing component
114.First signal wire 202 and secondary signal line 204 are coaxial cable, its structure be it is known in the art, sequentially from inside to outside
For metal wire, insulating barrier, metal net, protective layer.One end (such as with welding manner) of the metal wire of first signal wire 202
The first end T1 of connection component 222 is electrically connected at, the other end (being denoted as T1') is then electrically connected at radiant body 108.Second letter
One end (such as with welding manner) of the metal wire of number line 204 is electrically connected at the end points T2' of link block 20, and the other end then connects
Connecting interface 206 is connected to, and connecting interface 206 can connect signal feed-in component 110.In addition, the first signal wire 202 and the second letter
The metal net of number line 204 can then be turned on by substrate 200, and then be connected to ground terminal by connecting interface 206.For example,
In one embodiment, substrate 200 is multilayer circuit board, then connection component 222 can be formed at the metal level of the superiors, and first believes
The metal net of number line 202 and secondary signal line 204 can be then attached by the metal level of other floor；Or another
In embodiment, connection component 222 is formed at the metal level of the superiors, and delineates out what is insulated with connection component 222 in same layer
One access path, and the metal net of the first signal wire 202 and secondary signal line 204 is connected by the access path again
Connect.
Fig. 2 link block 20 illustrates Fig. 1 connection component 122, sensing accessory part 112 and direct current barrier components 118
It can be implemented in modular fashion, but not limited to this, one of ordinary skill in the art can should according to this make different modifications.Example
Such as, in fig. 2, the first signal wire 202 is to connect connection component 222 and radiant body 108, its length can according to different demands and
It is fixed, such as can be between 1 meter (rice) and 3 centimeters (centimetre).In other embodiments, the length of the first signal wire 202 can
Between 600 millimeters and 200 millimeters.And the signal wire of different length is by the metal wire electricity different from metal net generation
Hold effect (i.e. capacitance), therefore should suitably adjust the capacitance of electric capacity 216, for example, can between 3 micromicrofarads (picofarad,
PF) between 1 nano farad (nanofarad, nF), make electric capacity 216 can effectively reduce connection component 222 to radiant body 108 etc.
Imitate electric capacity, it is ensured that capacitive sensing component 114 correctly by radiant body 108, can sense the environmental capacitance value of particular range.At it
In his embodiment, the capacitance of electric capacity 216 can be between 10 micromicrofarads between 220 micromicrofarads.
In addition, link block 20 remove can be implemented in modular fashion Fig. 1 connection component 122, sensing accessory part 112 and
Outside direct current barrier components 118, it can equally avoid the radiation efficiency for influenceing antenna 106.With applied to Long Term Evolution radio communication
Exemplified by system, Fig. 3 A to Fig. 3 C and Fig. 4 A to Fig. 4 C are refer to.Fig. 3 A are that the length of the first signal wire 202 is 200 millimeters and not
The voltage standing wave ratio schematic diagram of antenna 106 when installing link block 20；Fig. 3 B are that the length of the first signal wire 202 is 200 millimeters
And when being equiped with link block 20 antenna 106 voltage standing wave ratio schematic diagram；And the length that Fig. 3 C are the first signal wire 202 is
200 millimeters and installing link block 20 before and after antenna 106 antenna efficiency schematic diagram, wherein dashed curve for installing link block
Antenna efficiency before 20, and block curve is the antenna efficiency after installing link block 20.In addition, Fig. 4 A are the first signal wire
202 length be 600 millimeters and when not installing link block 20 antenna 106 voltage standing wave ratio schematic diagram；Fig. 4 B are the first letter
The voltage standing wave ratio schematic diagram of the length of number line 202 antenna 106 for 600 millimeters and when being equiped with link block 20；And Fig. 4 C are
The length of first signal wire 202 is 600 millimeter and installs the antenna efficiency schematic diagram of antenna 106 before and after link block 20, wherein
Dashed curve is the antenna efficiency before installing link block 20, and block curve is the antenna efficiency after installing link block 20.
From Fig. 3 A to Fig. 3 C and Fig. 4 A to Fig. 4 C, for the first signal wire 202 of different length, link block 20 is all
The characteristics such as the working frequency range of antenna 106, bandwidth, antenna efficiency, gain are not influenceed, therefore can reduce design and production cost.
It is noted that link block 20 only be explanation be implemented in modular fashion Fig. 1 connection component 122, sensing it is auxiliary
Help a kind of embodiment of component 112 and direct current barrier components 118, but not limited to this, one of ordinary skill in the art should can
Appropriate change is done according to needed for system.For example, Fig. 5 is the schematic diagram of a link block 50 of the embodiment of the present invention.Connect mould
Block 50 includes a connection component 522, one sensing accessory part 512 and flows barrier components 518 always, and senses accessory part
512 include an electric capacity 516 of series connection and a high frequency barrier components 520, link block 50 are implemented in modular fashion or substituted
Fig. 1 connection component 122, sensing accessory part 112 and direct current barrier components 118.Specifically, connection component 522 is altogether
Slab guide (Coplanar Waveguide, CPW) transmission line, is made up of, wherein metal wire metal wire 500,502,504
500 are used for transmitting radio frequency signal, and metal wire 502,504 is used for being grounded.Three end T1~T3 mutual conductions of metal wire 500,
Wherein first end T1 (such as with welding manner) is electrically connected with radiant body 108, and the second end T2 is electrically connected with direct current barrier components 518
And turning into end points T2', end points T2' is electrically connected with signal feed-in component 110 again, and the 3rd end T3 connections sense accessory part 512
And turning into end points T3', end points T3' is electrically connected with capacitive sensing component 114 again.In addition, metal wire 500,502 staggered places should be true
Protect and insulate and no signal connects, such as isolation material is coated between the metal wire of metal wire 500,502 staggered places, and be not limited to
This.
Link block 50 removes the connection component 122 that can be implemented in modular fashion Fig. 1, sensing accessory part 112 and direct current
Outside barrier components 118, it can equally avoid the radiation efficiency for influenceing antenna 106.With applied to Long Term Evolution wireless communication system
Exemplified by, it refer to Fig. 6 A, Fig. 6 B.Fig. 6 A are the voltage standing wave ratio schematic diagram of antenna 106 when not installing link block 50, and Fig. 6 B
The voltage standing wave ratio schematic diagram of antenna 106 during to be equiped with link block 50.From Fig. 6 A, Fig. 6 B, the dress of link block 50
The characteristics such as the working frequency range for not interfering with antenna 106, bandwidth, antenna efficiency, gain are put, therefore design and production cost can be reduced.
Fig. 2 link block 20 and Fig. 5 link block 50 are all to be implemented in modular fashion the connection of radio-frequency unit 102
Component 122, sensing accessory part 112 and direct current barrier components 118, it is because of capacitive sensing component 114 and signal feed-in component
110 are connected to radiant body 108 by same node (i.e. connection component 122), therefore can be by connection component 122, sensing accessory part
112 and direct current barrier components 118 be arranged on adjacent position, so as to be integrated in same module, to reduce production cost, and raising group
Fill efficiency.
From the foregoing, spoke is connected to by same node with signal feed-in component 110 for capacitive sensing component 114
The framework of beam 108, the present invention adds electric capacity 116 between capacitive sensing component 114 and the node, to reduce equivalent electric
Hold, and strengthen the induction sensitivity of capacitive sensing component 114.Simultaneously as capacitive sensing component 114 and signal feed-in group
Part 110 is connected to radiant body 108 by same node, therefore connection component 122, sensing accessory part 112 and direct current barrier components
118 may be provided at adjacent position, and then can be integrated in same module, to reduce production cost, and improve packaging efficiency.
In addition, previous embodiment explanation is connected in capacitive sensing component 114 and signal feed-in component 110 by same node
It is connected under the framework of radiant body 108, how lifts induction sensitivity and improve packaging efficiency.Form, electricity as radiant body 108
The realization of the implementation of capacitive inductive component 114, the feed-in mode, radio frequency signal processing equipment 100 of signal feed-in component 110
Mode etc., refer to TaiWan, China patent application case No. 102113979 and No. 100142160 or fitted according to needed for system
Work as adjustment.For example, if antenna 106 includes the grounding assembly for being provided with ground connection, and radiant body 108 can be via an earth terminal
And be coupled to grounding assembly, then an at least ground capacity can be set between earth terminal and grounding assembly, to block earth terminal
To the DC signal path of grounding assembly, relevant connection mode refer to TaiWan, China patent application case the 102113979th and
No. 100142160.The form of antenna 106 is also not limited to particular types, for example, its can be planar inverted-F antenna, dipole antenna,
Collapsible dipole antenna, loop antenna, microstrip antenna, integrated antennas etc., depending on visual demand.
In known technology, interference and maintenance two kinds of demands of antenna performance are reduced in order to take into account, are generally utilized close to sensing
Device senses the capacitance variations of human body proximity, so as to judge human body proximity situation.However, tool metal material need to be included close to inductor
Receiver or sensor, this additional receiver or sensor can have an impact to antenna efficiency, and need to spend extra
Cost is to adjust antenna.By contrast, the present invention is not required to increase receiver or sensor, but is entered using existing radiant body
The sensing of row environmental capacitance value.Meanwhile the present invention utilizes the direct current of direct current barrier components radiation-inhibiting body to signal feed-in component
Signal, and the high-frequency signal using high frequency barrier components radiation-inhibiting body to capacitive sensing component, to increase electric capacity sexuality
The distance of reaction of component is answered, and reduces influence of the capacitive sensing component to antenna radiation efficiency.In addition, the capacitive character of the present invention
Inductive component is connected to radiant body with signal feed-in component by same node, and is added between capacitive sensing component and node
Electric capacity, to reduce equivalent capacity, and strengthen the induction sensitivity of capacitive sensing component, and this framework can be by connection component, sense
Answer accessory part and direct current barrier components to be arranged on adjacent position, and then same module can be integrated in, to reduce production cost, and
Improve packaging efficiency.
In summary, the present invention senses the environmental capacitance value of particular range using the radiant body of antenna, and adjusts nothing according to this
Line signal energy, thus can avoid influenceing the radiation efficiency of antenna, meanwhile, it is i.e. applicable with close need to only to design single antenna
The different communication systems of bandwidth requirements, design and production cost can be further reduced, and be advantageous to part management so that radio frequency fills
Put and reach that small size, high efficiency, environmental suitability be high and the characteristic of low interference.In addition, the present invention may achieve modularized design, with
Production cost is reduced, and improves packaging efficiency.
Presently preferred embodiments of the present invention is the foregoing is only, what every scope according to claims of the present invention was made etc.
With change and modification, it should all belong to covering scope of the invention.
Claims (14)
1. a kind of radio-frequency unit, the radio-frequency unit is used for a radio communication device, and the radio-frequency unit includes：
One antenna, the antenna include：
One radiant body；And
One signal feed-in component, the signal feed-in component are used for receiving and dispatching a radiofrequency signal；
One capacitive sensing component, the capacitive sensing component are used for sensing an environmental capacitance value of a particular range；
One connection component, the connection component include a first end, one second end and one the 3rd end of mutual conduction, first end electricity
Property is connected to the radiant body；
Barrier components are flowed always, and the direct current barrier components are electrically connected at second end and signal feed-in group of the connection component
Between part, for blocking a DC signal path at second end of the connection component and the signal feed-in component；And
One sensing accessory part, the sensing accessory part are electrically connected at the 3rd end and capacitive sensing of the connection component
Between component, the sensing accessory part includes：
One high frequency barrier components, the high frequency barrier components are used for blocking the 3rd end and capacitive sensing group of the connection component
One high-frequency signal path of part, to avoid the radiofrequency signal from disturbing the capacitive sensing component；And
An at least electric capacity, an at least electric capacity are connected with the high frequency barrier components and are electrically connected at the 3rd of the connection component
Between end and the capacitive sensing component, for reducing the connection component to an equivalent capacity of the radiant body；
Wherein, the signal feed-in component is coupled to the radiant body by the direct current barrier components and the connection component, to pass through this
Radiant body receives and dispatches the radiofrequency signal；
Wherein, the capacitive sensing component is coupled to the radiant body by the high frequency barrier components and the connection component, to pass through
The radiant body senses the environmental capacitance value of the particular range.
2. radio-frequency unit as claimed in claim 1, the wherein antenna also include：
One grounding assembly, the grounding assembly are used for providing ground connection；
One earth terminal, the earth terminal are used for coupling the grounding assembly；And
An at least ground capacity, at least a ground capacity is electrically connected between the earth terminal and the grounding assembly for this, for hindering
Break the earth terminal to the grounding assembly a DC signal path.
3. radio-frequency unit as claimed in claim 1, the wherein connection component also include a signal wire, the signal wire is electrically connected with
Between the first end and the radiant body, the signal wire includes a metal wire and a metal net, and the metal net is with exhausted
Edge mode coats the metal wire.
4. the length of radio-frequency unit as claimed in claim 3, the wherein signal wire is more than or equal to 3 centimetres and less than or equal to 1
Rice, and a capacitance of an at least electric capacity is more than or equal to 1 nano farad and is less than or equal to 3 micromicrofarads.
5. radio-frequency unit as claimed in claim 1, the wherein antenna be a planar inverted-F antenna, a dipole antenna, one collapsible
Dipole antenna, primary Ioops antenna, a microstrip antenna or an integrated antennas.
6. radio-frequency unit as claimed in claim 1, wherein the high frequency barrier components are in inductive.
7. radio-frequency unit as claimed in claim 1, wherein the direct current barrier components are in capacitive character.
8. a kind of radio communication device, the radio communication device includes：
One radio frequency signal processing equipment, the radio frequency signal processing equipment is used for producing a radiofrequency signal, and senses result according to one,
Adjust the energy of the radiofrequency signal；And
One radio-frequency unit, the radio-frequency unit include：
One antenna, the antenna include：
One radiant body；And
One signal feed-in component, the signal feed-in component are used for receiving and dispatching a radiofrequency signal；
One capacitive sensing component, the capacitive sensing component are used for sensing an environmental capacitance value of a particular range, to produce
The sensing result；
One connection component, the connection component include a first end, one second end and one the 3rd end of mutual conduction, first end electricity
Property is connected to the radiant body；
Barrier components are flowed always, and the direct current barrier components are electrically connected at second end and signal feed-in group of the connection component
Between part, for blocking a DC signal path at second end of the connection component and the signal feed-in component；And
One sensing accessory part, the sensing accessory part are electrically connected at the 3rd end and capacitive sensing of the connection component
Between component, the sensing accessory part includes：
One high frequency barrier components, the high frequency barrier components are used for blocking the 3rd end and capacitive sensing group of the connection component
One high-frequency signal path of part, to avoid the radiofrequency signal from disturbing the capacitive sensing component；And
An at least electric capacity, an at least electric capacity are connected with the high frequency barrier components and are electrically connected at the 3rd of the connection component
Between end and the capacitive sensing component, for reducing the connection component to an equivalent capacity of the radiant body；
Wherein, the signal feed-in component is coupled to the radiant body by the direct current barrier components and the connection component, to pass through this
Radiant body receives and dispatches the radiofrequency signal；
Wherein, the capacitive sensing component is coupled to the radiant body by the high frequency barrier components and the connection component, to pass through
The radiant body senses the environmental capacitance value of the particular range.
9. radio communication device as claimed in claim 8, the wherein antenna also include：
One grounding assembly, the grounding assembly are used for providing ground connection；
One earth terminal, the earth terminal are used for coupling the grounding assembly；And
An at least ground capacity, at least a ground capacity is electrically connected between the earth terminal and the grounding assembly for this, for hindering
Break the earth terminal to the grounding assembly a DC signal path.
10. radio communication device as claimed in claim 8, the wherein connection component also include a signal wire, signal wire electricity
Property is connected between the first end and the radiant body, and the signal wire includes a metal wire and a metal net, and this is metal knitted
Net coats the metal wire with insulation mode.
11. the length of radio communication device as claimed in claim 10, the wherein signal wire is more than or equal to 3 centimetres and is less than
Equal to 1 meter, and a capacitance of an at least electric capacity is more than or equal to 1 nano farad and is less than or equal to 3 micromicrofarads.
12. radio communication device as claimed in claim 8, the wherein antenna are a planar inverted-F antenna, a dipole antenna, one
Collapsible dipole antenna, primary Ioops antenna, a microstrip antenna or an integrated antennas.
13. radio communication device as claimed in claim 8, wherein the high frequency barrier components are in inductive.
14. radio communication device as claimed in claim 8, wherein the direct current barrier components are in capacitive character.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436108.5A CN105375943B (en) | 2014-08-29 | 2014-08-29 | Radio-frequency unit and radio communication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436108.5A CN105375943B (en) | 2014-08-29 | 2014-08-29 | Radio-frequency unit and radio communication device |
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| CN105375943A CN105375943A (en) | 2016-03-02 |
| CN105375943B true CN105375943B (en) | 2018-01-26 |
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| CN201410436108.5A Active CN105375943B (en) | 2014-08-29 | 2014-08-29 | Radio-frequency unit and radio communication device |
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| CN106527835A (en) * | 2016-11-10 | 2017-03-22 | 捷开通讯(深圳)有限公司 | Communication terminal and distance induction apparatus thereof |
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|---|---|---|---|---|
| US20040046701A1 (en) * | 2001-03-07 | 2004-03-11 | Stefan Huber | Radio communications device comprising an sar value-reducing correction element |
| CN103138794A (en) * | 2011-11-28 | 2013-06-05 | 启碁科技股份有限公司 | Radio frequency device and wireless communication device |
| CN103443999A (en) * | 2011-02-23 | 2013-12-11 | 微晶片科技德国第二公司 | Capacitive sensor device, radio transceiver with the capacitive sensor device, and a method for adjusting a transmission power of the handheld radio transceiver |
-
2014
- 2014-08-29 CN CN201410436108.5A patent/CN105375943B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040046701A1 (en) * | 2001-03-07 | 2004-03-11 | Stefan Huber | Radio communications device comprising an sar value-reducing correction element |
| CN103443999A (en) * | 2011-02-23 | 2013-12-11 | 微晶片科技德国第二公司 | Capacitive sensor device, radio transceiver with the capacitive sensor device, and a method for adjusting a transmission power of the handheld radio transceiver |
| CN103138794A (en) * | 2011-11-28 | 2013-06-05 | 启碁科技股份有限公司 | Radio frequency device and wireless communication device |
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