CN103138794B - Radio frequency device and wireless communication device - Google Patents
Radio frequency device and wireless communication device Download PDFInfo
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- CN103138794B CN103138794B CN201110384578.8A CN201110384578A CN103138794B CN 103138794 B CN103138794 B CN 103138794B CN 201110384578 A CN201110384578 A CN 201110384578A CN 103138794 B CN103138794 B CN 103138794B
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Abstract
The invention provides a radio frequency device and a wireless communication device. The radio frequency device is used for a wireless communication device, and the radio frequency device includes a ground connection component, an antenna, a ground connection end, a capacitance induction component and at least one capacitor. The ground connection component is used for providing ground connection; the antenna includes a radiator, a signal feed-in component, the signal feed-in component is coupled with the radiator, and is used for transmitting a radio frequency signal to the radiator so as to launch the radio frequency signal through the radiator; the ground connection end is coupled with the ground connection component; the capacitance induction component is electrically connected with the radiator of the antenna, and is used for inducting an environment capacitance within a specific range through the radiator; at least one capacitor is in connection between the ground connection end of the antenna and the ground connection component, and is used for blocking-up a direct current signal path from the ground connection end to the ground connection component. The radio frequency device can avoid the influence on radiation efficiency of the antenna, and reduce the cost of design and production, and bring convenience to parts management.
Description
Technical field
The present invention relates to a kind of radio-frequency unit and radio communication device, espespecially a kind ofly avoid the radiation efficiency affecting antenna, and radio-frequency unit and the radio communication device of design and production cost can be reduced.
Background technology
Radio communication device is by antenna transmission or receive radio wave, to transmit or to exchange radio signal, and then access one wireless communication system.Radio wave is a kind of string ripple signal of the higher-order of oscillation, and therefore there is certain specification countries in the world for its energy, and main purpose avoids impacting user or disturbing the running of other radio communication devices.For example, the international non-free radiation protection committee (International Commission on Non-Ionizing Radiation Protection) advises human body specific absorption rate (Specific Absorption Rate, SAR) value should more than 2.0W/Kg, and FCC (Federal Communications Commission, FCC) then advises being no more than 1.6W/Kg.Human body specific absorption rate refers to that in general electromagnetic radiation environment, organism unit mass is to electromagnetic wave energy specific absorption rate, and this numerical value is using W/Kg as unit.In addition, the environment that different communication product is applied is different, therefore can further consider distance factor, such as, for the hand-held radio communication device such as mobile phone, intelligent mobile phone, must test SAR value when being generally predetermined distance human body 20cm.
As known in the art, the interference (i.e. SAR value) reducing radio communication device external will certainly affect antenna performance, therefore in order to maintain antenna performance simultaneously, known technology has proposed many modes, one of them be exactly use close to inductor to sense human body close to situation; That is, when human body proximity being detected close to inductor, reduce wireless energy signal, and when human body proximity not detected close to inductor, then maintain or suitably improve wireless energy signal.In this case, reduction interference can be taken into account simultaneously and maintain antenna performance two kinds of demands.But, knownly need comprise the receiver or sensor with metal material close to inductor, in order to sense the capacitance variations of human body proximity, thus judge human body close to situation.This additional receiver or sensor can have an impact to antenna efficiency, cause working band to narrow, and in other words, the antenna being originally applicable to wideband requirements can cause working band to narrow because of additional receiver or sensor.In this case, for the different communication systems with adjacent frequency bands demand, applicable antenna must be designed respectively, except increasing design and production cost, also unfavorable for part management.
Therefore, real necessity having improvement of known technology.
Summary of the invention
Therefore, namely main purpose of the present invention is to provide a kind of radio-frequency unit and radio communication device, reduces interference to take into account and maintains antenna performance two kinds of demands.
The present invention discloses a kind of radio-frequency unit, and this radio-frequency unit is used for a radio communication device, and this radio-frequency unit comprises: a grounding assembly, and this grounding assembly is used to provide ground connection; One antenna, this antenna package contains: a radiant body; One signal feed-in assembly, this signal feed-in assembly is coupled to this radiant body, is used for a radiofrequency signal to be sent to this radiant body, to launch this radiofrequency signal by this radiant body; And an earth terminal, this earth terminal is used for coupling this grounding assembly; One capacitive sensing assembly (capacitive sensingunit), this capacitive sensing assembly is electrically connected at this radiant body of this antenna, is used for by this radiant body, responds to an environmental capacitance value of a particular range; And at least one electric capacity, this at least one electric capacity is electrically connected between this earth terminal of this antenna and this grounding assembly, is used for blocking the DC signal path of this earth terminal to this grounding assembly.
The present invention also discloses a kind of radio communication device, and this radio communication device comprises: a radio frequency signal processing equipment, and this radio frequency signal processing equipment is used for generation one radiofrequency signal, and according to an induction result, adjusts the energy of this radiofrequency signal; And a radio-frequency unit, this radio-frequency unit comprises: a grounding assembly, and this grounding assembly is used to provide ground connection; One antenna, this antenna package contains: a radiant body; One signal feed-in assembly, this signal feed-in assembly is coupled to this radiant body, is used for this radiofrequency signal to be sent to this radiant body, to launch this radiofrequency signal by this radiant body; And an earth terminal, this earth terminal is used for coupling this grounding assembly; One capacitive sensing assembly, this capacitive sensing assembly is electrically connected at this radiant body of this antenna, is used for by this radiant body, responds to an environmental capacitance value of a particular range, to produce this induction result; And at least one electric capacity, this at least one electric capacity is electrically connected between this earth terminal of this antenna and this grounding assembly, is used for blocking the DC signal path of this earth terminal to this grounding assembly.
The present invention also discloses a kind of radio-frequency unit, and this radio-frequency unit is used for a radio communication device, and this radio-frequency unit comprises: an antenna, and this antenna package contains: a radiant body; And a signal feed-in assembly, this signal feed-in assembly is used for a radiofrequency signal to be sent to this radiant body, to launch this radiofrequency signal by this radiant body; And a capacitive sensing assembly, this capacitive sensing assembly is electrically connected at this radiant body of this antenna, is used for by this radiant body, responds to an environmental capacitance value of a particular range; Wherein, this signal feed-in assembly or this capacitive sensing assembly block the DC signal path between this radiant body to one ground end.
The present invention also discloses a kind of radio communication device, and this radio communication device comprises: a radio frequency signal processing equipment, and this radio frequency signal processing equipment is used for generation one radiofrequency signal, and according to an induction result, adjusts the energy of this radiofrequency signal; And a radio-frequency unit, this radio-frequency unit comprises: an antenna, and this antenna package contains: a radiant body; And a signal feed-in assembly, this signal feed-in assembly is used for this radiofrequency signal to be sent to this radiant body, to launch this radiofrequency signal by this radiant body; And a capacitive sensing assembly, this capacitive sensing assembly is electrically connected at this radiant body of this antenna, is used for by this radiant body, responds to an environmental capacitance value of a particular range, to produce this induction result; Wherein, this signal feed-in assembly or this capacitive sensing assembly block the DC signal path between this radiant body to one ground end.
The present invention utilizes the environmental capacitance value of the radiant body induction particular range of antenna, and adjusts wireless energy signal according to this, thus can avoid the radiation efficiency affecting antenna, take into account simultaneously and reduce interference and maintain antenna performance two kinds of demands; Meanwhile, only need design single antenna and the applicable different communication systems with adjacent frequency bands demand, design and production cost can be reduced further, and be conducive to part management.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a radio communication device of the embodiment of the present invention.
Fig. 2 A is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Fig. 2 B is the schematic diagram of a variation pattern of the radio-frequency unit of Fig. 2 A.
Fig. 2 C is the schematic diagram of a variation pattern of the radio-frequency unit of Fig. 2 A.
Fig. 2 D is the schematic diagram of a variation pattern of the radio-frequency unit of Fig. 2 A.
Fig. 3 is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Fig. 4 is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Fig. 5 is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Fig. 6 is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Fig. 7 is the schematic diagram of a radio communication device of the embodiment of the present invention.
Fig. 8 is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Fig. 9 is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Figure 10 is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Figure 11 is the schematic diagram of a radio frequency signal processing equipment of the embodiment of the present invention.
Figure 12 is the schematic diagram of a radio frequency signal processing equipment of the embodiment of the present invention.
Figure 13 is the schematic diagram of a capacitive sensing assembly of the embodiment of the present invention.
Primary clustering symbol description:
10,70 radio communication devices
100,700,1100,1200 radio frequency signal processing equipments
102,202,302,402,502,602,702,802,902,1002 radio-frequency units
104,204,304,404,504,604 grounding assemblies
106,206,306,406,506,606,706,806,906,1006 antennas
108,208,308,408,508,608,708,808,908,1008 radiant bodies
110,210,310,410,510,610,710,810,910,1010 signal feed-in assemblies
112,212,312,412,512,612 earth terminals
114,214,314,414,514,614,714,814,914,1014,1300 capacitive sensing assemblies
116,216,316,416,516,616 electric capacity
CAP_rst responds to result
RF_sig radiofrequency signal
1112,1212 signal generator modules
1114 attenuation module
1116,1216 handover modules
R1 ~ R3,1214 resistance
1302 judging units
C_INT, C_Sensing, C_HAND electric capacity
PIN_Sensing pin
V_STEP critical voltage value
N_CHARGE charging times
N_BARRIER barrier charging times
SW1, SW2 switch
Embodiment
Reduce interference to take into account and maintain antenna performance two kinds of demands, the present invention also by the capacitance variations of sensing human body proximity, adjusts wireless energy signal according to this.But being different from known technology needs additional receiver or sensor and affect antenna efficiency, and the present invention does not need additional receiver or sensor, but utilize the environmental capacitance value of the radiant body induction particular range of antenna, and adjust wireless energy signal according to this.Below by the difference according to antenna form, be divided into two large class declarations concept of the present invention.
First, for the antenna between radiant body and ground with direct current access path, please refer to Fig. 1, 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, and as mobile phone, computer system, accessing wirelessly point device etc., it is made up of a radio frequency signal processing equipment 100 and a radio-frequency unit 102 briefly.Radio frequency signal processing equipment 100 is used for generation one radiofrequency signal RF_sig, and the induction result CAP_rst of the environmental capacitance value that can return according to radio-frequency unit 102, the energy of adjustment radiofrequency signal RF_sig.Radio-frequency unit 102 includes grounding assembly 104, antenna 106, capacitive sensing assembly 114 and an electric capacity 116.Antenna 106 includes radiant body 108, signal feed-in assembly 110 and an earth terminal 112.Capacitive sensing assembly 114 is electrically connected at radiant body 108, is used for by radiant body 108, the environmental capacitance value of induction particular range, and produces induction result CAP_rst according to this.In addition, electric capacity 116, between the earth terminal 112 and grounding assembly 104 of antenna 106, is used for blocking the DC signal path of earth terminal 112 to grounding assembly 104.
In simple terms, in radio communication device 10, capacitive sensing assembly 114 utilizes the radiant body 108 of antenna 106 to carry out induced environment capacitance, and induction result CAP_rst is sent to radio frequency signal processing equipment 100, make radio frequency signal processing equipment 100 adjust the energy of radiofrequency signal RF_sig according to this.In addition, owing to there is direct current access path between antenna 106 and grounding assembly 104, therefore radio-frequency unit 102 utilizes electric capacity 116 to block the DC signal path of earth terminal 112 to grounding assembly 104, by this, capacitive sensing assembly 114 can be avoided by grounding assembly 104 induced environment capacitance.
Known technology usually utilize close to inductor sensing human body proximity capacitance variations, thus judge human body close to situation.But need comprise the receiver or sensor with metal material close to inductor, this additional receiver or sensor can have an impact to antenna efficiency, cause working band to narrow.By contrast, the capacitive sensing assembly 114 of radio communication device 10 utilizes the radiant body 108 of antenna 106 to respond to.In other words, the present invention does not need to increase receiver or sensor, but to utilize in radio-frequency unit 102 original radiant body 108 to carry out the induction of environmental capacitance value.Thus, the radiation efficiency affecting antenna 106 can be avoided, the more important thing is, for the different communication systems with adjacent frequency bands demand, only need design single antenna, thus can reduce design and production cost, and be conducive to part management.
It is noted that the radio communication device 10 of Fig. 1 illustrates the antenna for having direct current access path between radiant body and ground, as why not increased the receiver or inductor that may affect antenna efficiency, and actual induction human body close to situation.Those of ordinary skill in the art should do different modifications according to this, and are not limited thereto.For example, antenna 106 represents the antenna between radiant body and ground with direct current access path, but is not limited to any form.Similarly, capacitive sensing assembly 114 is by the radiant body 108 induced environment capacitance of antenna 106, but its function mode, the link position relative to radiant body 108, the producing method responding to result CAP_rst, form or content etc. are neither limited to any rule.In addition, electric capacity 116 is in order to block the DC signal path of earth terminal 112 to grounding assembly 104, but in different application, multiple electric capacity may be needed just to reach identical object (blocking the DC signal path of radiant body 108 to grounding assembly 104), or need special requirement (as bulky capacitor value) etc., all should belong to simple change of the present invention.
For example, please refer to Fig. 2 A, Fig. 2 A is the schematic diagram of a radio-frequency unit 202 of the embodiment of the present invention.Radio-frequency unit 202 is an execution mode of the radio-frequency unit 102 of Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 202 includes grounding assembly 204, antenna 206, capacitive sensing assembly 214 and an electric capacity 216, antenna 206 includes radiant body 208, signal feed-in assembly 210 and an earth terminal 212.From Fig. 2 A, antenna 206 is a dual-band antenna.In addition, capacitive sensing assembly 214 and signal feed-in assembly 210 conode, but be not limited thereto, as long as guarantee that capacitive sensing assembly 214 can be electrically connected at radiant body 208.Such as, Fig. 2 B and Fig. 2 C respectively illustrates the set-up mode of other two kinds of capacitive sensing assemblies 214, and it all belongs to category of the present invention.
As long as the set-up mode that Fig. 2 B and Fig. 2 C shows capacitive sensing assembly 214 can be electrically connected at radiant body 208, in addition, the set-up mode of electric capacity 216 also can suitably adjust, as long as the direct current access path of energy blocking capacitor inductive component 214 to grounding assembly 204.In other words, when capacitive sensing assembly 214 is arranged at the tail end of radiant body 208 (embodiment of Fig. 2 B), electric capacity 216 also can change the position be arranged at as shown in Figure 2 D; Now, the position of earth terminal 212 also redefines.In simple terms, in the present invention, earth terminal 212 (or earth terminal 112) is the point be defined as on the path of radiant body 208 to grounding assembly 204, more precisely, for definition electric capacity 216 is relative to the position of capacitive sensing assembly 214, therefore adaptability adjustment.
Similarly, other are multi-form but the antenna with same characteristic features (having direct current access path between radiant body and ground) also can according to the suitably derivative and change of the embodiment of Fig. 2 A to Fig. 2 D.
Please refer to Fig. 3, Fig. 3 is the schematic diagram of a radio-frequency unit 302 of the embodiment of the present invention.Radio-frequency unit 302 is an execution mode of the radio-frequency unit 102 of Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 302 includes grounding assembly 304, antenna 306, capacitive sensing assembly 314 and an electric capacity 316, antenna 306 includes radiant body 308, signal feed-in assembly 310 and an earth terminal 312.As shown in Figure 3, antenna 306 is a planar inverted-F antenna, in addition, only need to guarantee that capacitive sensing assembly 314 can be electrically connected at radiant body 308, the positions of other setting positions as capacitive sensing assembly 314, electric capacity 316 etc. all can be imitated the embodiment of Fig. 2 B to Fig. 2 D and suitably adjust, therefore are not repeated herein.
Please refer to Fig. 4, Fig. 4 is the schematic diagram of a radio-frequency unit 402 of the embodiment of the present invention.Radio-frequency unit 402 is an execution mode of the radio-frequency unit 102 of Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 402 includes grounding assembly 404, antenna 406, capacitive sensing assembly 414 and an electric capacity 416, antenna 406 includes radiant body 408, signal feed-in assembly 410 and an earth terminal 412.As shown in Figure 4, antenna 406 is a dipole antenna, in addition, only need to guarantee that capacitive sensing assembly 414 can be electrically connected at radiant body 408, the positions of other setting positions as capacitive sensing assembly 414, electric capacity 416 etc. all can be imitated the embodiment of Fig. 2 B to Fig. 2 D and suitably adjust, therefore are not repeated herein.
Please refer to Fig. 5, Fig. 5 is the schematic diagram of a radio-frequency unit 502 of the embodiment of the present invention.Radio-frequency unit 502 is an execution mode of the radio-frequency unit 102 of Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 502 includes grounding assembly 504, antenna 506, capacitive sensing assembly 514 and an electric capacity 516, antenna 506 includes radiant body 508, signal feed-in assembly 510 and an earth terminal 512.As shown in Figure 5, antenna 506 is a collapsible dipole antenna, in addition, only need to guarantee that capacitive sensing assembly 514 can be electrically connected at radiant body 508, the positions of other setting positions as capacitive sensing assembly 514, electric capacity 516 etc. all can be imitated the embodiment of Fig. 2 B to Fig. 2 D and suitably adjust, therefore are not repeated herein.
In addition, for the radio communication device 10 of Fig. 1, the feed-in mode of the present invention's also not restricting signal feed-in assembly 110, that is signal feed-in assembly 110 can be coupled to radiant body 108 by coupled modes or electric connection mode.For example, please refer to Fig. 6, Fig. 6 is the schematic diagram of a radio-frequency unit 602 of the embodiment of the present invention.Radio-frequency unit 602 is an execution mode of the radio-frequency unit 102 of Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 602 includes grounding assembly 604, antenna 606, capacitive sensing assembly 614 and an electric capacity 616, antenna 606 includes radiant body 608, signal feed-in assembly 610 and an earth terminal 612.As shown in Figure 6, radiofrequency signal RF_sig is sent to radiant body 608 by coupling feed-in mode by signal feed-in assembly 610, in addition, only need to guarantee that capacitive sensing assembly 614 can be electrically connected at radiant body 608, the positions of other setting positions as capacitive sensing assembly 614, electric capacity 616 etc. all can be imitated the embodiment of Fig. 2 B to Fig. 2 D and suitably adjust, therefore are not repeated herein.
On the other hand, as previously mentioned, in different application, multiple electric capacity may be needed could to block the DC signal path of radiant body 108 to grounding assembly 104, and common example is as slot antenna, slotted eye integrated antennas etc.These use the change of multiple electric capacity in response to many DC signal path, should belong to the common technology of those of ordinary skill in the art, therefore be not repeated herein.
In addition, for the antenna between radiant body and ground without direct current access path, please refer to Fig. 7, Fig. 7 is the schematic diagram of a radio communication device 70 of the embodiment of the present invention.Radio communication device 70 can be any electronic product with radio communication function, and as mobile phone, computer system, accessing wirelessly point device etc., it is made up of a radio frequency signal processing equipment 700 and a radio-frequency unit 702 briefly.Radio frequency signal processing equipment 700 is used for generation one radiofrequency signal RF_sig, and the induction result CAP_rst of the environmental capacitance value that can return according to radio-frequency unit 702, the energy of adjustment radiofrequency signal RF_sig.Radio-frequency unit 702 includes antenna 706 and a capacitive sensing assembly 714, and antenna 706 includes radiant body 708 and a signal feed-in assembly 710.Capacitive sensing assembly 714 is electrically connected at radiant body 708, is used for by radiant body 708, the environmental capacitance value of induction particular range, and produces induction result CAP_rst according to this.
In simple terms, the function mode of radio communication device 70 and radio communication device 10 similar, radiant body 708 is utilized to carry out induced environment capacitance by capacitive sensing assembly 714, and induction result CAP_rst is sent to radio frequency signal processing equipment 700, make radio frequency signal processing equipment 700 adjust the energy of radiofrequency signal RF_sig according to this.Radio communication device 70 and radio communication device 10 difference are do not have direct current access path between antenna 706 and ground, and therefore radio-frequency unit 702 does not need to need to utilize electric capacity to block the DC signal path of antenna to ground as radio-frequency unit 102.Therefore, radio communication device 70 does not also need to increase receiver or sensor, but to utilize in radio-frequency unit 702 original radiant body 708 to carry out the induction of environmental capacitance value.Thus, the radiation efficiency affecting antenna 706 can be avoided, the more important thing is, for the different communication systems with adjacent frequency bands demand, only need design single antenna, thus can reduce design and production cost, and be conducive to part management.
It is noted that the radio communication device 70 of Fig. 7 illustrates the antenna for not having direct current access path between radiant body and ground, as why not increased the receiver or inductor that may affect antenna efficiency, and actual induction human body close to situation.Other derivative changes can be imitated aforesaid embodiment and obtain, and are not limited thereto.For example, please refer to Fig. 8, Fig. 8 is the schematic diagram of a radio-frequency unit 802 of the embodiment of the present invention.Radio-frequency unit 802 is an execution mode of the radio-frequency unit 702 of Fig. 7, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 802 includes antenna 806 and a capacitive sensing assembly 814, antenna 806 includes radiant body 808 and a signal feed-in assembly 810.As shown in Figure 8, antenna 806 is a unipole antenna, in addition, only needs to guarantee that capacitive sensing assembly 814 can be electrically connected at radiant body 808, and other setting positions etc. as capacitive sensing assembly 814 all can suitably adjust, therefore are not repeated herein.
Please refer to Fig. 9, Fig. 9 is the schematic diagram of a radio-frequency unit 902 of the embodiment of the present invention.Radio-frequency unit 902 is an execution mode of the radio-frequency unit 702 of Fig. 7, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 902 includes antenna 906 and a capacitive sensing assembly 914, antenna 906 includes radiant body 908 and a signal feed-in assembly 910.As shown in Figure 9, antenna 906 is a loop aerial, in addition, only needs to guarantee that capacitive sensing assembly 914 can be electrically connected at radiant body 908, and other setting positions etc. as capacitive sensing assembly 914 all can suitably adjust, therefore are not repeated herein.
Please refer to Figure 10, Figure 10 is the schematic diagram of a radio-frequency unit 1002 of the embodiment of the present invention.Radio-frequency unit 1002 is an execution mode of the radio-frequency unit 702 of Fig. 7, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 1002 includes antenna 1006 and a capacitive sensing assembly 1014, antenna 1006 includes radiant body 1008 and a signal feed-in assembly 1010.As shown in Figure 10, antenna 1006 is a plate aerial, and therefore, capacitive sensing assembly 1014 is preferably electrically connected at radiant body 1008, but is not limited thereto.
Whether and between ground above-described embodiment has direct current access path according to the radiant body of antenna, and is divided into two large class declarations, does not need to increase receiver or sensor in order to illustrate the present invention, but to utilize in radio-frequency unit original radiant body to carry out the induction of environmental capacitance value.Thus, the radiation efficiency affecting antenna can be avoided, the more important thing is, for the different communication systems with adjacent frequency bands demand, only need design single antenna, thus can reduce design and production cost, and be conducive to part management.
On the other hand, function mode for radio frequency signal processing equipment 100 or 700 is then not limited to ad hoc rules, as long as can according to induction result CAP_rst, the energy of suitable adjustment radiofrequency signal RF_sig, more particularly, when responding to result CAP_rst and showing human body proximity, the energy of radiofrequency signal RF_sig should be reduced.For example, please refer to Figure 11, Figure 11 is the schematic diagram of a radio frequency signal processing equipment 1100 of the embodiment of the present invention.Radio frequency signal processing equipment 1100 is an execution mode of the radio frequency signal processing equipment 100 of Fig. 1 or the radio frequency signal processing equipment 700 of Fig. 7.Radio frequency signal processing equipment 1100 includes signal generator module 1112, attenuation module 1114 and a handover module 1116.Signal generator module 1112 is used for producing radiofrequency signal RF_sig, and attenuation module 1114 is made up of resistance R1 ~ R3, is used for deamplification energy.Handover module 1116 is coupled to signal feed-in assembly (as 110,710 etc.), capacitive sensing assembly (as 114,714 etc.), signal generator module 1112 and attenuation module 1114, it comprises switch SW1, SW2, be used for when the environmental capacitance value that the induction result CAP_rst of capacitive sensing assembly shows particular range is greater than a preset value, attenuation module 1114 be connected between signal generator module 1112 and signal feed-in assembly, the radiofrequency signal that signal generator module 1112 is exported is sent to signal feed-in assembly after attenuation module 1114 damping capacity; Otherwise, when the environmental capacitance value that the induction result CAP_rst of capacitive sensing assembly shows particular range is not greater than preset value, then signal generator module 1112 is connected directly to signal feed-in assembly, the radiofrequency signal that signal generator module 1112 is exported directly is sent to signal feed-in assembly.Thus, when responding to result CAP_rst and showing human body proximity, radio frequency signal processing equipment 1100 can reduce the energy of radiofrequency signal RF_sig, to avoid affecting human body; And when responding to result CAP_rst display and not having human body proximity, radio frequency signal processing equipment 1100 maintains the energy of radiofrequency signal RF_sig, to maintain antenna efficiency.
In addition, please refer to Figure 12, Figure 12 is the schematic diagram of a radio frequency signal processing equipment 1200 of the embodiment of the present invention.Radio frequency signal processing equipment 1200 is an execution mode of the radio frequency signal processing equipment 100 of Fig. 1 or the radio frequency signal processing equipment 700 of Fig. 7.Radio frequency signal processing equipment 1200 includes signal generator module 1212, resistance 1214 and a handover module 1216.Signal generator module 1212 is used for producing radiofrequency signal RF_sig, and is electrically connected at resistance 1214 and signal feed-in assembly (as 110,710 etc.).Handover module 1216 be coupled to systematically hold, capacitive sensing assembly (as 114,714 etc.) and resistance 1214, be used for when the environmental capacitance value that the induction result CAP_rst of capacitive sensing assembly shows particular range is greater than a preset value, conducting resistance 1214 is to the connection of systematically holding, the radiofrequency signal branching part that signal generator module 1212 is exported extremely is held, thus reduces the energy being sent to the radiofrequency signal RF_sig of signal feed-in assembly; Otherwise, when the environmental capacitance value that the induction result CAP_rst of capacitive sensing assembly shows particular range is not greater than preset value, cut off resistance 1214 to the connection of systematically holding, the radiofrequency signal that signal generator module 1212 is exported directly is sent to signal feed-in assembly, thus maintains the energy being sent to the radiofrequency signal RF_sig of signal feed-in assembly.Thus, when responding to result CAP_rst and showing human body proximity, radio frequency signal processing equipment 1200 can reduce the energy of radiofrequency signal RF_sig, to avoid affecting human body; And when responding to result CAP_rst display and not having human body proximity, radio frequency signal processing equipment 1200 maintains the energy of radiofrequency signal RF_sig, to maintain antenna efficiency.
In addition, about the supply power mode of handover module 1116,1216 in radio frequency signal processing equipment 1100 and 1200, can DC power supply be embedded in radiofrequency signal RF_sig, DC power supply being taken out by filter, shunt circuit etc. and be supplied to handover module 1116,1216, this should be technology well known in the art.
On the other hand, in the aforementioned embodiment, capacitive sensing assembly 114,214,314,414,514,614,714,814,914,1014 is used for responding to the environmental capacitance value of particular range, and its implementation is unlimited, suitably can adjust in response to system requirements.For example, please refer to Figure 13, Figure 13 is the schematic diagram of a capacitive sensing assembly 1300 of the embodiment of the present invention.Capacitive sensing assembly 1300 can replace or realize the capacitive sensing assembly 114,214,314,414,514,614,714,814,914,1014 in previous embodiment, and it includes judging unit 1302 and an electric capacity C_INT.Judging unit 1302 connects radiant body (as radiant body 108,208,308,408,508,608,708,808,908,1008) by a pin PIN_Sensing, whether the voltage being used for detecting PIN_Sensing reaches critical voltage value V_STEP, whether the charging times reached required for critical voltage value according to the voltage of PIN_Sensing again surmounts N_CHARGE+N_BARRIER, judge whether that foreign object is close, thus exported induction result CAP_rst.Wherein, critical voltage value V_STEP represents that electric capacity C_INT completes the critical voltage value of charging to pin PIN_Sensing; Charging times N_CHARGE represent when without foreign object near time, electric capacity C_INT charges to pin PIN_Sensing, makes the voltage of pin PIN_Sensing reach charging times needed for critical voltage value V_STEP; Barrier charging times N_BARRIER is the misoperation in order to avoid environment slight variations causes, and is the barrier charging times that charging times N_CHARGE adds, and when charging times, to surmount the N_CHARGE+N_BARRIER foreign object that can correctly judge close.
Specifically, pin PIN_Sensing (or radiant body) can be equivalent to the electric capacity C_Sensing on one to ground to ground; Wherein, it is noted that electric capacity C_Sensing is an equivalent capacity, it is not present in entity structure, but, for the function mode of capacitive sensing assembly 1300 is described, be still illustrated in Figure 13.When close without foreign object time, electric capacity C_INT can charge to electric capacity C_Sensing and the charging times reached required for critical voltage value V_STEP is charging times N_CHARGE; In other words, charging times N_CHARGE can be used as foreign object near the foundation judged, barrier charging times N_BARRIER then additionally considers the impact that environment slight variations causes.Therefore, when foreign object near and make electric capacity C_INT surmount N_CHARGE+N_BARRIER to the pin PIN_Sensing charging times charged to required for critical voltage value V_STEP time, the judging unit 1302 close event of foreign object that can correctly judge occurs, thus exports corresponding induction result CAP_rst (as logical one); Otherwise, when close without foreign object, or when foreign object is when still electric capacity C_INT does not surmount N_CHARGE+N_BARRIER to the pin PIN_Sensing charging times charged to required for critical voltage value V_STEP, represent that the close event of foreign object is not triggered, then judging unit 1302 exports corresponding induction result CAP_rst (as logical zero).
Further, as shown in figure 13, human body or hand can be equivalent to an electric capacity C_HAND over the ground for earthing potential, therefore when human body or hand are near capacitive sensing assembly, the capacitance of pin PIN_Sensing will increase because of Capacitance parallel connection, that is C_Sensing+C_HAND, capacitance increases and will electric capacity C_INT be increased the charging times that pin PIN_Sensing charges to required for critical voltage value V STEP.By this, when charging times surmounts N_CHARGE+N_BARRIER, the foreign object that can correctly judge occurs near event, and in information (as logical one) corresponding to induction result CAP_rst display, represent detect human body or hand close.
It is noted that Figure 13 illustrates the implementation being applicable to capacitive sensing assembly of the present invention, those of ordinary skill in the art suitably should adjust in response to system requirements, is not limited thereto.
In known technology, reduce interference to take into account and maintain antenna performance two kinds of demands, usually utilizing the capacitance variations close to inductor sensing human body proximity, thus judge human body close to situation.But need comprise the receiver or sensor with metal material close to inductor, this additional receiver or sensor can have an impact to antenna efficiency, cause working band to narrow.By contrast, the present invention does not need to increase receiver or sensor, but utilizes existing radiant body to carry out the induction of environmental capacitance value.Thus, the radiation efficiency affecting antenna can be avoided, the more important thing is, for the different communication systems with adjacent frequency bands demand, only need design single antenna, thus can reduce design and production cost, and be conducive to part management.
In sum, the present invention utilizes the environmental capacitance value of the radiant body induction particular range of antenna, and adjust wireless energy signal according to this, thus the radiation efficiency affecting antenna can be avoided, simultaneously, only need design single antenna and the applicable different communication systems with adjacent frequency bands demand, design and production cost can be reduced further, and be conducive to part management.
The foregoing is only preferred embodiment of the present invention, every equivalent variations of doing according to the scope of claims of the present invention and modification, all should belong to covering scope of the present invention.
Claims (22)
1. a radio-frequency unit, this radio-frequency unit is used for a radio communication device, and this radio-frequency unit comprises:
One grounding assembly, this grounding assembly is used to provide ground connection; And
One antenna, this antenna comprises:
One radiant body;
One signal feed-in assembly, this signal feed-in assembly is coupled to this radiant body, is used for a radiofrequency signal to be sent to this radiant body, to launch this radiofrequency signal by this radiant body; And
One earth terminal, this earth terminal is used for coupling this grounding assembly;
It is characterized in that, this radio-frequency unit also comprises a capacitive sensing assembly, and this capacitive sensing assembly is electrically connected at this radiant body of this antenna, is used for by this radiant body, responds to an environmental capacitance value of a particular range; And
At least one electric capacity, this at least one electric capacity is electrically connected between this earth terminal of this antenna and this grounding assembly, is used for blocking the DC signal path of this earth terminal to this grounding assembly.
2. radio-frequency unit as claimed in claim 1, wherein this antenna is a planar inverted-F antenna, a dipole antenna, a collapsible dipole antenna or a slot antenna.
3. radio-frequency unit as claimed in claim 1, wherein this signal feed-in assembly is coupled to this radiant body by coupled modes.
4. radio-frequency unit as claimed in claim 1, wherein this signal feed-in assembly is coupled to this radiant body by electric connection mode.
5. radio-frequency unit as claimed in claim 1, wherein this capacitive sensing assembly is also used for responding to one of this environmental capacitance value the radio frequency signal processing equipment that result is sent to this radio communication device, this radio frequency signal processing equipment, according to this induction result, adjusts the energy of this radiofrequency signal.
6. a radio communication device, this radio communication device comprises:
One radio frequency signal processing equipment, this radio frequency signal processing equipment is used for generation one radiofrequency signal, and according to an induction result, adjusts the energy of this radiofrequency signal; And
One radio-frequency unit, this radio-frequency unit comprises:
One grounding assembly, this grounding assembly is used to provide ground connection; And
One antenna, this antenna comprises:
One radiant body;
One signal feed-in assembly, this signal feed-in assembly is coupled to this radiant body, is used for this radiofrequency signal to be sent to this radiant body, to launch this radiofrequency signal by this radiant body; And
One earth terminal, this earth terminal is used for coupling this grounding assembly;
It is characterized in that, this radio-frequency unit also comprises a capacitive sensing assembly, and this capacitive sensing assembly is electrically connected at this radiant body of this antenna, is used for by this radiant body, responds to an environmental capacitance value of a particular range, to produce this induction result; And
At least one electric capacity, this at least one electric capacity is electrically connected between this earth terminal of this antenna and this grounding assembly, is used for blocking the DC signal path of this earth terminal to this grounding assembly.
7. radio communication device as claimed in claim 6, wherein this antenna is a unipole antenna, primary Ioops antenna or a plate aerial.
8. radio communication device as claimed in claim 6, wherein this signal feed-in assembly is coupled to this radiant body by coupled modes.
9. radio communication device as claimed in claim 6, wherein this signal feed-in assembly is coupled to this radiant body by electric connection mode.
10. radio communication device as claimed in claim 6, wherein this radio frequency signal processing equipment comprises:
One signal generator module, this signal generator module is used for producing this radiofrequency signal;
One attenuation module, this attenuation module is used for deamplification energy; And
One handover module, this handover module is coupled to this signal feed-in assembly, this capacitive sensing assembly, this signal generator module and this attenuation module, be used for when this environmental capacitance value that this induction result of this capacitive sensing assembly shows this particular range is greater than a preset value, this attenuation module is connected between this signal generator module and this signal feed-in assembly, makes this radiofrequency signal after this attenuation module damping capacity, be sent to this signal feed-in assembly.
11. radio communication devices as claimed in claim 6, wherein this radio frequency signal processing equipment comprises:
One signal generator module, this signal generator module is coupled to this signal feed-in assembly, is used for producing this radiofrequency signal;
One resistance, this resistance is coupled between this signal generator module and this signal feed-in assembly; And
One handover module, this handover module is coupled to this capacitive sensing assembly, this resistance and a ground end, be used for when this environmental capacitance value that this induction result of this capacitive sensing assembly shows this particular range is greater than a preset value, the connection that this resistance of conducting is held to this ground, makes this radiofrequency signal branching part hold to this ground.
12. 1 kinds of radio-frequency units, this radio-frequency unit is used for a radio communication device, and this radio-frequency unit comprises:
One antenna, this antenna comprises:
One radiant body; And
One signal feed-in assembly, this signal feed-in assembly is used for a radiofrequency signal to be sent to this radiant body, to launch this radiofrequency signal by this radiant body; And
It is characterized in that, this radio-frequency unit also comprises a capacitive sensing assembly, and this capacitive sensing assembly is electrically connected at this radiant body of this antenna, is used for by this radiant body, responds to an environmental capacitance value of a particular range;
Wherein, this signal feed-in assembly or this capacitive sensing assembly block the DC signal path between this radiant body to one ground end.
13. radio-frequency units as claimed in claim 12, wherein this antenna is a unipole antenna, primary Ioops antenna or a plate aerial.
14. radio-frequency units as claimed in claim 12, wherein this signal feed-in assembly is coupled to this radiant body by coupled modes.
15. radio-frequency units as claimed in claim 12, wherein this signal feed-in assembly is coupled to this radiant body by electric connection mode.
16. radio-frequency units as claimed in claim 12, wherein this capacitive sensing assembly is also used for responding to one of this environmental capacitance value the radio frequency signal processing equipment that result is sent to this radio communication device, this radio frequency signal processing equipment, according to this induction result, adjusts the energy of this radiofrequency signal.
17. 1 kinds of radio communication devices, this radio communication device comprises:
One radio frequency signal processing equipment, this radio frequency signal processing equipment is used for generation one radiofrequency signal, and according to an induction result, adjusts the energy of this radiofrequency signal; And
One radio-frequency unit, this radio-frequency unit comprises:
One antenna, this antenna comprises:
One radiant body; And
One signal feed-in assembly, this signal feed-in assembly is used for this radiofrequency signal to be sent to this radiant body, to launch this radiofrequency signal by this radiant body; And
It is characterized in that, this radio-frequency unit also comprises a capacitive sensing assembly, and this capacitive sensing assembly is electrically connected at this radiant body of this antenna, is used for by this radiant body, responds to an environmental capacitance value of a particular range, to produce this induction result;
Wherein, this signal feed-in assembly or this capacitive sensing assembly block the DC signal path between this radiant body to one ground end.
18. radio communication devices as claimed in claim 17, wherein this antenna is a unipole antenna, primary Ioops antenna or a plate aerial.
19. radio communication devices as claimed in claim 17, wherein this signal feed-in assembly is coupled to this radiant body by coupled modes.
20. radio communication devices as claimed in claim 17, wherein this signal feed-in assembly is coupled to this radiant body by electric connection mode.
21. radio communication devices as claimed in claim 17, wherein this radio frequency signal processing equipment comprises:
One signal generator module, this signal generator module is used for producing this radiofrequency signal;
One attenuation module, this attenuation module is used for deamplification energy; And
One handover module, this handover module is coupled to this signal feed-in assembly, this capacitive sensing assembly, this signal generator module and this attenuation module, be used for when this environmental capacitance value that this induction result of this capacitive sensing assembly shows this particular range is greater than a preset value, this attenuation module is connected between this signal generator module and this signal feed-in assembly, makes this radiofrequency signal after this attenuation module damping capacity, be sent to this signal feed-in assembly.
22. radio communication devices as claimed in claim 17, wherein this radio frequency signal processing equipment comprises:
One signal generator module, this signal generator module is coupled to this signal feed-in assembly, is used for producing this radiofrequency signal;
One resistance, this resistance is coupled between this signal generator module and this signal feed-in assembly; And
One handover module, this handover module is coupled to this capacitive sensing assembly, this resistance and a ground end, be used for when this environmental capacitance value that this induction result of this capacitive sensing assembly shows this particular range is greater than a preset value, the connection that this resistance of conducting is held to this ground, makes this radiofrequency signal branching part hold to this ground.
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| CN106461712B (en) * | 2014-04-07 | 2019-08-09 | 卡文迪什动力有限公司 | The head carried out using digital variable capacitor-hand capacity is compensated |
| CN105375943B (en) * | 2014-08-29 | 2018-01-26 | 启碁科技股份有限公司 | Radio-frequency unit and radio communication device |
| CN108183330A (en) * | 2016-12-08 | 2018-06-19 | 台湾安洁电子股份有限公司 | The terminal installation of hybrid antenna with integration capacitance formula proximity sense |
| CN107547101B (en) * | 2017-08-25 | 2020-09-22 | 惠州Tcl移动通信有限公司 | Mobile terminal sharing radio frequency antenna |
| CN109462884B (en) * | 2018-12-29 | 2021-10-22 | 联想(北京)有限公司 | Electronic equipment and control method |
| CN109714666B (en) * | 2018-12-29 | 2021-10-22 | 联想(北京)有限公司 | Electronic equipment and control method |
| CN112468913B (en) * | 2019-09-06 | 2022-07-19 | 华为技术有限公司 | Wearing detection device |
| CN113054403B (en) * | 2019-12-26 | 2022-06-10 | 华为技术有限公司 | Electronic device |
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