CN104124991A - Radio frequency device and wireless communication device - Google Patents
Radio frequency device and wireless communication device Download PDFInfo
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- CN104124991A CN104124991A CN201310148847.XA CN201310148847A CN104124991A CN 104124991 A CN104124991 A CN 104124991A CN 201310148847 A CN201310148847 A CN 201310148847A CN 104124991 A CN104124991 A CN 104124991A
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Abstract
A radio frequency device and a wireless communication device. The radio frequency device contains a grounding assembly used for providing ground connection, an antenna which contains a radiator, a signal feed-in assembly for transmitting a radio-frequency signal to the radiator so as to transmit the radio-frequency signal through the radiator and a ground terminal for coupling the grounding assembly, a capacitive sensing assembly for sensing an environmental capacitance value within a specific range through the radiator, a first DC blocking assembly for blocking a DC signal path from a ground terminal of the antenna to the grounding assembly, a second DC blocking assembly for blocking a DC signal path from the radiator to the signal feed-in assembly of the antenna, and a high-frequency blocking assembly which is electrically connected between the radiator and the capacitive sensing assembly and is used for blocking a high-frequency signal path from the radiator to the capacitive sensing assembly. According to the invention, radiant efficiency is not influenced, design and production costs can be reduced, and it is beneficial to parts management. The radio-frequency device has characteristics of small size, high efficiency, high environmental suitability and low interference.
Description
Technical field
The present invention relates to a kind of radio-frequency unit and radio communication device, espespecially a kind of radiation efficiency of avoiding affecting antenna, reduces radio-frequency unit size simultaneously and promotes radio-frequency unit and the radio communication device of distance of reaction.
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, so there is certain standard countries in the world for its energy, and main purpose is to avoid user to impact or disturb the running of other radio communication devices.For instance, suggestion human body specific absorption rate (the Specific Absorption Rate of the international non-free radiation protection committee (International Commission on Non-Ionizing Radiation Protection), SAR) value should not surpass 2.0W/Kg, and 1.6W/Kg advises being no more than in FCC (Federal Communications Commission, FCC).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 usingd W/Kg as unit.In addition, the applied environment of different communication product is different, therefore can further consider distance factor, for example, for hand-held radio communication devices such as mobile phone, intelligent mobile phones, essential testing SA R value while being generally predetermined distance human body 20cm.
As known in the art, reduce the external interference (being SAR value) of radio communication device and conventionally can affect antenna performance, therefore in order to maintain antenna performance simultaneously, known technology has proposed many modes, and one of them is exactly with approaching the situation that approaches that inductor carrys out sensing human body; That is to say, when approaching inductor and human body proximity detected, reduce wireless energy signal, and when approaching inductor and human body proximity do not detected, maintain or suitably improve wireless energy signal.Yet the known inductor that approaches need comprise receiver or the sensor with metal material, in order to the capacitance variations of sensing human body proximity, thus judgement human body proximity situation.The receiver that this is additional or sensor can exert an influence to antenna radiation efficiency, and need to spend extra cost with adjustment antenna, and therefore, how designing the antenna that can meet SAR value laws and regulations requirement simultaneously and maintain usefulness has become a major challenge.
Thereby, need to provide a kind of radio-frequency unit and radio communication device to solve the problems referred to above.
Summary of the invention
Therefore, main purpose of the present invention is to provide a kind of radio-frequency unit and radio communication device, with the size that reduces interference, maintains antenna performance and dwindle radio-frequency unit.
The present invention discloses a kind of radio-frequency unit, and this radio-frequency unit is 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 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, this capacitive sensing assembly is used for by this radiant body, an environment capacitance of induction one particular range; One first direct current intercepts assembly, and this first direct current intercepts assembly and is electrically connected between this earth terminal and this grounding assembly of this antenna, is used for blocking this earth terminal to a direct current signal path of this grounding assembly; One second direct current intercepts assembly, and this second direct current intercepts assembly and is electrically connected between this radiant body and this signal feed-in assembly, is used for blocking this radiant body to a direct current signal path of this signal feed-in assembly; And one high frequency intercept assembly, this high frequency intercepts assembly and is electrically connected between this radiant body and this capacitive sensing assembly, is used for blocking this radiant body to a high-frequency signal path of this capacitive sensing 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 producing a 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 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 used for by this radiant body, an environment capacitance of induction one particular range; One first direct current intercepts assembly, and this first direct current intercepts assembly and is electrically connected between this earth terminal and this grounding assembly of this antenna, is used for blocking this earth terminal to a direct current signal path of this grounding assembly; One second direct current intercepts assembly, and this second direct current intercepts assembly and is electrically connected between this radiant body and this signal feed-in assembly, is used for blocking this radiant body to a direct current signal path of this signal feed-in assembly; And one high frequency intercept assembly, this high frequency intercepts assembly and is electrically connected between this radiant body and this capacitive sensing assembly, is used for blocking this radiant body to a high-frequency signal path of this capacitive sensing assembly.
The present invention also discloses a kind of radio-frequency unit, and this radio-frequency unit is 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; One capacitive sensing assembly, this capacitive sensing assembly is used for by this radiant body, an environment capacitance of induction one particular range; Flow resistance is every assembly always, and this direct current intercepts assembly and is electrically connected between this radiant body and this signal feed-in assembly, is used for blocking this radiant body to a direct current signal path of this signal feed-in assembly; And one high frequency intercept assembly, this high frequency intercepts assembly and is electrically connected between this radiant body and this capacitive sensing assembly, is used for blocking this radiant body to a high-frequency signal path of this capacitive sensing assembly; Wherein, this signal feed-in assembly or this capacitive sensing assembly are blocked the direct current 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 producing a 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; One capacitive sensing assembly, this capacitive sensing assembly is used for by this radiant body, an environment capacitance of induction one particular range; Flow resistance is every assembly always, and this direct current intercepts assembly and is electrically connected between this radiant body and this signal feed-in assembly, is used for blocking this radiant body to a direct current signal path of this signal feed-in assembly; And one high frequency intercept assembly, this high frequency intercepts assembly and is electrically connected between this radiant body and this capacitive sensing assembly, is used for blocking this radiant body to a high-frequency signal path of this capacitive sensing assembly; Wherein, this signal feed-in assembly or this capacitive sensing assembly are blocked the direct current signal path between this radiant body to one ground end.
The present invention utilizes the environment capacitance of the radiant body induction particular range of antenna, and adjust according to this wireless energy signal, thereby can avoid affecting the radiation efficiency of antenna, simultaneously, only needing design single antenna is the applicable different communication systems with close bandwidth requirements, can further reduce design and production cost, and be conducive to part management, make that radio-frequency unit reaches small size, high efficiency, environmental suitability is high and the characteristic of low interference.
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-frequency unit of the embodiment of the present invention.
Fig. 8 A is the schematic diagram of a radio-frequency unit of the embodiment of the present invention.
Fig. 8 B is the schematic diagram of a variation pattern of the radio-frequency unit of Fig. 8 A.
Fig. 8 C is the schematic diagram of a variation pattern of the radio-frequency unit of Fig. 8 A.
Fig. 9 is the schematic diagram of a radio communication device 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 unit 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 radio frequency signal processing equipment of the embodiment of the present invention.
Figure 14 is the schematic diagram of a capacitive sensing assembly of the embodiment of the present invention.
Primary clustering symbol description:
10,90 radio communication devices
100,900,1200,1300 radio frequency signal processing equipments
102,202,302,402,502,602,702,802,902,1002, radio-frequency unit
1102
104,204,304,404,504,604,704,804 grounding assemblies
106,206,306,406,506,606,706,806,906,1006, antenna
1106
108,208,308,408,508,608,708,808,908,1008, radiant body
1108
808_r1,808_r2, the sub-radiant body of 808_r3
IND inductance
110,210,310,410,510,610,710,810,910,1010, signal feed-in assembly
1110
112,212,312,412,512,612,712,812 earth terminals
114,214,314,414,514,614,714,814,914,1014, capacitive sensing assembly
1114、1400
116,216,316,416,516,616,716,816,118,218, direct current intercepts assembly
318、418、518、618、718、818、918、1018、1118
120,220,320,420,520,620,720,820,920,1020, high frequency intercepts assembly
1120
CAP_rst responds to result
RF_sig radiofrequency signal
1212,1312 signal generator modules
1214 attenuation module
1216,1316 handover modules
R1～R3,1314 resistance
1402 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
In order to take into account to reduce, disturb and maintain two kinds of demands of antenna performance, the present invention utilizes the environment capacitance of the radiant body induction particular range of antenna, and adjust according to this wireless energy signal, it can save the usage space of capacitive sensing assembly, and for the different communication systems with close bandwidth requirements, only need design single antenna, thereby can reduce design and production cost, and be conducive to part management.In addition, the present invention also utilizes direct current to intercept assembly and high frequency intercepts assembly, to increase the actual induction area of inductive component, promotes distance of reaction and reduces the impact of inductive component on antenna radiation efficiency.By the difference according to antenna form, be divided into two large class declarations concept of the present invention below.
First, for thering is the antenna of direct current access path between radiant body and ground, please refer to Fig. 1, the schematic diagram of the radio communication device 10 that Fig. 1 is 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, wireless access point device etc., it is consisted of a radio frequency signal processing equipment 100 and a radio-frequency unit 102 briefly.Radio frequency signal processing equipment 100 is used for producing a radiofrequency signal RF_sig, and the induction result CAP_rst of the environment capacitance that can return according to radio-frequency unit 102, adjusts the energy of radiofrequency signal RF_sig.Radio-frequency unit 102 includes a grounding assembly 104, an antenna 106, a capacitive sensing assembly 114, direct current intercepts assembly 116,118 and a high frequency intercepts assembly 120.Antenna 106 includes a radiant body 108, a signal feed-in assembly 110 and an earth terminal 112.Antenna 106 can be a planar inverted-F antenna, a dipole antenna, a collapsible dipole antenna, a loop antenna, a microstrip antenna or an integrated antennas, but not as limit.Capacitive sensing assembly 114 is used for by radiant body 108, the environment capacitance of induction particular range, and produce according to this induction result CAP_rst.Direct current intercepts assembly 116 between the earth terminal 112 and grounding assembly 104 of antenna 106, is used for blocking earth terminal 112 to the direct current signal path of grounding assembly 104.Direct current intercepts assembly 118 and is electrically connected between radiant body 108 and signal feed-in assembly 110, be used for blocking radiant body 108 to the direct current signal path of signal feed-in assembly 110, high frequency intercepts assembly 120 and is electrically connected between radiant body 108 and capacitive sensing assembly 114, is used for blocking radiant body 108 to the high-frequency signal path of capacitive sensing assembly 114.
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 according to this energy of radiofrequency signal RF_sig.In addition, because antenna 106 and 104 of grounding assemblies have direct current access path, therefore radio-frequency unit 102 utilizes direct current to intercept assembly 116 blocking-up earth terminals 112 to the direct current signal path of grounding assembly 104, by this, can avoid capacitive sensing assembly 114 by grounding assembly 104 induced environment capacitances.In addition, radio-frequency unit 102 also utilizes direct current to intercept assembly 118 blocking-up radiant bodies 108 to the direct current signal path of signal feed-in assembly 110, to avoid 114 pairs of signal feed-in assemblies 110 of capacitive sensing assembly to charge, the situation that prevents misoperation occurs, and can increase the distance of reaction of capacitive sensing assembly 114.High frequency intercept assembly 120 radiant body 108 capable of blocking to the high-frequency signal path of capacitive sensing assembly 114, and can be used to adjust the high frequency input impedance of capacitive sensing assembly 114, to reduce the impact of capacitive sensing assembly 114 on antenna radiation efficiency.
Specifically, direct current intercepts assembly 118 in order to block radiant body 108 to the direct current signal path of signal feed-in assembly 110, and it can be one or more electric capacity, coupler or other composite component with direct current barrier properties etc.And high frequency intercepts assembly 120 in order to block radiant body 108 to the high-frequency signal path of capacitive sensing assembly 114, it can be one or more inductance, coupling assembling, matching network (matching network) or other composite component with high frequency barrier properties etc.In this case, when radio-frequency unit 102 needs by radiant body 108 transmitting-receiving radiofrequency signal, radiofrequency signal high frequency is intercepted to assembly 120 and be equivalent to open circuit, that is can be considered infinitely great toward the input impedance of capacitive sensing assembly 114 directions, thereby do not affect the impedance matching of radiant body 108, therefore, the radiation efficiency of antenna is not subject to the impact of capacitive sensing assembly 114.Meanwhile, radiofrequency signal direct current is intercepted to assembly 118 and be equivalent to short circuit, that is direct current intercepts the radiofrequency signal that assembly 118 does not affect transmitting-receiving on radiant body 108.On the other hand, when capacitive sensing assembly 114 is responded to, direct current signal high frequency is intercepted to assembly 120 and be equivalent to short circuit, that is the radiant body 108 of the metal on high frequency obstruct assembly 120 and electric connection thereof all becomes a part for the induction metal of capacitive sensing assembly 114.Simultaneously, direct current signal direct current is intercepted to assembly 118 and be equivalent to open circuit, that is the direct current signal of capacitive sensing assembly 114 is stopped and can, to 110 chargings of signal feed-in assembly, therefore can not avoid signal feed-in assembly 110 or capacitive sensing assembly 114 that misoperations occur by direct current obstruct assembly 118.In addition, the metal part that connects radiant body 108 on direct current obstruct assembly 118 can also become a part for the induction metal of capacitive sensing assembly 114, and increases distance of reaction.In brief, direct current intercepts assembly 118, high frequency intercepts the radiation efficiency that assembly 120 can increase the distance of reaction of inductive component and avoid affecting antenna 106.
From the above, the capacitive sensing assembly 114 of radio communication device 10 utilizes the radiant body 108 of antenna 106 to respond to, thereby does not need to increase receiver or sensor, can reduce space requirement.In addition, the direct current of radio communication device 10 intercepts assembly 118 can be when radio-frequency unit 102 needs by radiant body 108 transmitting-receiving radiofrequency signal, blocking-up is the radiofrequency signal to capacitive sensing assembly 114 by radiant body 108, makes antenna 106 not affected by capacitive sensing assembly 114; Direct current obstruct assembly 118 is when capacitive sensing assembly 114 is responded to, and blocking-up is the direct current signal path to signal feed-in assembly 110 by capacitive sensing assembly 114, makes capacitive sensing assembly 114 not be subject to the impact of signal feed-in assembly 110.Therefore, by direct current, intercept assembly 118 and high frequency obstruct assembly 120, radio communication device 10 can increase the distance of reaction of capacitive sensing assembly 114 and avoid affecting the radiation efficiency of antenna 106.
On the other hand, 10 explanations of the radio communication device of Fig. 1 are for having the antenna of direct current access path between radiant body and ground, as why not increased, may affect the receiver of antenna efficiency or inductor, and actual induction human body proximity situation.Those of ordinary skill in the art should do different modifications according to this, and is not limited to this.For instance, antenna 106 represents to have the antenna of direct current access path between radiant body and ground, but is not limited to any form.Similarly, capacitive sensing assembly 114 is by the radiant body 108 induced environment capacitances of antenna 106, but its function mode, with respect to the link position of radiant body 108, producing method, form or the content etc. of induction result CAP_rst are neither limited to any rule.In addition, direct current intercepts assembly 116 in order to block earth terminal 112 to the direct current signal path of grounding assembly 104, it can be that one or more electric capacity, coupler or other have composite component of direct current barrier properties etc., but in different application, may need special requirement (as large capacitance) etc. just can reach identical object.
For instance, please refer to Fig. 2 A, the schematic diagram of the radio-frequency unit 202 that Fig. 2 A is the embodiment of the present invention.One execution mode of the radio-frequency unit 102 that radio-frequency unit 202 is Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 202 includes a grounding assembly 204, an antenna 206, a capacitive sensing assembly 214, direct current intercepts assembly 216,218 and a high frequency intercepts assembly 220, antenna 206 includes a radiant body 208, a signal feed-in assembly 210 and an earth terminal 212.From Fig. 2 A, antenna 206 is a dual-band antenna.Although be connected with high frequency between capacitive sensing assembly 214 and radiant body 208, intercept assembly 220, but do not affect the characteristic being electrically connected between capacitive sensing assembly 214 and radiant body 208, make radiant body 208 and the metallic area that direct current intercepts assembly 218 all can become the induction metal plate of capacitive sensing assembly 214.The preferred range that direct current intercepts the equivalent capacitance value of assembly 218 is 3.3pF to 56pF, and the preferred range that direct current intercepts the equivalent capacitance value of assembly 216 is 3.3pF to 33pF, to guarantee that high-frequency signal has good conducting, and obtains preferably distance of reaction.In addition, the position that capacitive sensing assembly 214 intercepts assembly 220 electric connection radiant bodies 208 by high frequency is not limited to part shown in Fig. 2 A, for example, Fig. 2 B and Fig. 2 C have shown respectively 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 Fig. 2 B and Fig. 2 C have shown that the set-up mode of capacitive sensing assembly 214 can intercept assembly 220 by high frequency and be electrically connected at radiant body 208, in addition, direct current intercepts the set-up mode of assembly 216 and also can suitably adjust, as long as energy blocking capacitor inductive component 214 is to the direct current access path of 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), direct current intercepts assembly 216 also can change the position being arranged at as shown in Figure 2 D into; Now, the position of earth terminal 212 also redefines.In simple terms, in the present invention, earth terminal 212(or earth terminal 112) be defined as radiant body 208 to the point on the path of grounding assembly 204, more precisely, for definition direct current intercepts assembly 216 with respect to the position of capacitive sensing assembly 214, therefore adaptability adjustment.
Similarly, other multi-form but antennas with same characteristic features (having direct current access path between radiant body and ground) also can be suitably derivative and change according to the embodiment of Fig. 2 A to Fig. 2 D.
Please refer to Fig. 3, the schematic diagram of the radio-frequency unit 302 that Fig. 3 is the embodiment of the present invention.One execution mode of the radio-frequency unit 102 that radio-frequency unit 302 is Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 302 includes a grounding assembly 304, an antenna 306, a capacitive sensing assembly 314, direct current intercepts assembly 316,318 and a high frequency intercepts assembly 320, antenna 306 includes a radiant body 308, a 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 intercept assembly 320 by high frequency and be electrically connected at radiant body 308, and radiant body 308 to the direct current signal path of signal feed-in assembly 310 is blocked by direct current obstruct assembly 318, other positions etc. that intercept assembly 316 as the setting position of capacitive sensing assembly 314, direct current all can be imitated the embodiment of Fig. 2 B to Fig. 2 D and suitably adjust, therefore be not repeated herein.
Please refer to Fig. 4, the schematic diagram of the radio-frequency unit 402 that Fig. 4 is the embodiment of the present invention.One execution mode of the radio-frequency unit 102 that radio-frequency unit 402 is Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 402 includes a grounding assembly 404, an antenna 406, a capacitive sensing assembly 414, direct current intercepts assembly 416,418 and a high frequency intercepts assembly 420, antenna 406 includes a radiant body 408, a 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 intercept assembly 420 by high frequency and be electrically connected at radiant body 408, and radiant body 408 to the direct current signal path of signal feed-in assembly 410 is blocked by direct current obstruct assembly 418, other positions etc. that intercept assembly 416 as the setting position of capacitive sensing assembly 414, direct current all can be imitated the embodiment of Fig. 2 B to Fig. 2 D and suitably adjust, therefore be not repeated herein.
Please refer to Fig. 5, the schematic diagram of the radio-frequency unit 502 that Fig. 5 is the embodiment of the present invention.One execution mode of the radio-frequency unit 102 that radio-frequency unit 502 is Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 502 includes a grounding assembly 504, an antenna 506, a capacitive sensing assembly 514, direct current intercepts assembly 516,518 and a high frequency intercepts assembly 520, antenna 506 includes a radiant body 508, a 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 intercept assembly 520 by high frequency and be electrically connected at radiant body 508, and radiant body 508 to the direct current signal path of signal feed-in assembly 510 is blocked by direct current obstruct assembly 518, other positions etc. that intercept assembly 516 as the setting position of capacitive sensing assembly 514, direct current all can be imitated the embodiment of Fig. 2 B to Fig. 2 D and suitably adjust, therefore be not repeated herein.
Please refer to Fig. 6, the schematic diagram of the radio-frequency unit 602 that Fig. 6 is the embodiment of the present invention.One execution mode of the radio-frequency unit 102 that radio-frequency unit 602 is Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 602 includes an antenna 606, a capacitive sensing assembly 614, direct current intercepts assembly 616,618 and a high frequency intercepts assembly 620, antenna 606 includes a radiant body 608, a signal feed-in assembly 610 and an earth terminal 612.As shown in Figure 6, antenna 606 is a loop aerial, in addition, only need to guarantee that capacitive sensing assembly 614 can intercept assembly 620 by high frequency and be electrically connected at radiant body 608, and radiant body 608 to the direct current signal path of signal feed-in assembly 610 is blocked by direct current obstruct assembly 618, other are as all can suitably adjusted the position etc. that the setting position of capacitive sensing assembly 614, direct current intercept assembly 616, therefore be not repeated herein.
In addition, for the radio communication device 10 of Fig. 1, the present invention is the feed-in mode of restricting signal feed-in assembly 110 not also, that is signal feed-in assembly 110 can be coupled to radiant body 108 by coupled modes or electric connection mode.For instance, please refer to Fig. 7, the schematic diagram of the radio-frequency unit 702 that Fig. 7 is the embodiment of the present invention.One execution mode of the radio-frequency unit 102 that radio-frequency unit 702 is Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 702 includes a grounding assembly 704, an antenna 706, a capacitive sensing assembly 714, direct current intercepts assembly 716,718 and a high frequency intercepts assembly 720, antenna 706 includes a radiant body 708, a signal feed-in assembly 710 and an earth terminal 712.Because signal feed-in assembly 710 is sent to radiant body 708 by coupling feed-in mode by radiofrequency signal RF_sig, therefore radiant body 708 does not have direct current signal path with signal feed-in assembly 710, is equivalent to have direct current to intercept assembly 718 between radiant body 708 and signal feed-in assembly 710.In addition, only need to guarantee that capacitive sensing assembly 714 can intercept assembly 720 by high frequency and be electrically connected at radiant body 708, and radiant body 708 to the direct current signal path of signal feed-in assembly 710 is blocked by direct current obstruct assembly 718, other positions etc. that intercept assembly 716 as the setting position of capacitive sensing assembly 714, direct current all can be imitated the embodiment of Fig. 2 B to Fig. 2 D and suitably adjust, therefore be not repeated herein.
On the other hand, for the radio communication device 10 of Fig. 1, the present invention does not also limit the number of radiant body 108, that is radiant body 108 can consist of plural sub-radiant body, and can have coupling interaction effect between sub-radiant body.For instance, please refer to Fig. 8 A, the schematic diagram of the radio-frequency unit 802 that Fig. 8 A is the embodiment of the present invention.One execution mode of the radio-frequency unit 102 that radio-frequency unit 802 is Fig. 1, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 802 includes a grounding assembly 804, one antenna 806, one capacitive sensing assembly 814, direct current intercepts assembly 816, 818 and one high frequency intercepts assembly 820, antenna 806 includes a radiant body 808, one signal feed-in assembly 810 and an earth terminal 812, wherein radiant body 808 includes sub-radiant body 808_r1, 808_r2 and 808_r3, and between sub-radiant body 808_r2 and 808_r3 and sub-radiant body 808_r1, also include an inductance IND, to increase the induction metallic area of capacitive sensing assembly 814, and then increase distance of reaction.Because inductance IND is high impedance under the operating frequency of antenna 806, high-frequency signal can not circulate via inductance IND between sub-radiant body 808_r2 and 808_r3 and sub-radiant body 808_r1, therefore reduces the impact of inductance IND on antenna radiation efficiency.The preferred range that direct current intercepts the equivalent capacitance value of assembly 818 is 3.3pF to 56pF, the preferred range that direct current intercepts the equivalent capacitance value of assembly 816 is 3.3pF to 33pF, to guarantee high-frequency signal conducting well, and obtain preferably distance of reaction, and the preferred range of the equivalent inductance value of inductance IND is for being greater than 33nH, to avoid affecting antenna radiation efficiency.
Should be noted, capacitive sensing assembly 814 intercepts assembly 820 by high frequency and is electrically connected with radiant body 808, and its link position is not limited to part shown in Fig. 8 A.For instance, capacitive sensing assembly 814 can intercept assembly 820 by high frequency and connect at sub-radiant body 808_r1,808_r2 and 808_r3 or the antenna 806 any positions of body, and by the numerical value of adjusting inductance IND, capacitive sensing assembly 814 is reduced the impact of antenna radiation efficiency.In addition, sub-radiant body 808_r1,808_r2 and 808_r3 can be respectively a high frequency radiation body, a low frequency radiation body and another low frequency radiation body, by inductance IND, be connected between sub-radiant body 808_r1,808_r2 and 808_r3, make the direct current signal conducting between high and low frequency radiant body, and the induction metallic area of increase capacitive sensing assembly 814, promote distance of reaction, and intercept high-frequency signal and affect low frequency signal, to reduce the impact on antenna radiation efficiency.The link position of inductance IND is not limited to part shown in Fig. 8 A, also can be connected between sub-radiant body 808_r1,808_r2 or between sub-radiant body 808_r1,808_r3, or be connected at any close low-and high-frequency radiant body place, and adjust its inductance value and reach above-mentioned same object.Said method may be implemented in the various antenna frames with two or more low-and high-frequency radiant bodies, so that the direct current signal conducting of low-and high-frequency radiant body increases induction metallic area, promote distance of reaction, and intercept the circulation of high-frequency signal, to reduce the impact on antenna radiation efficiency.For example, Fig. 8 B and Fig. 8 C have shown respectively the set-up mode of other two kinds of capacitive sensing assemblies 814 and inductance IND, and it all belongs to category of the present invention.
As long as Fig. 8 B and Fig. 8 C have shown that the set-up mode of capacitive sensing assembly 814 can intercept assembly 820 by high frequency and be electrically connected at radiant body 808, in addition, as long as the link position of inductance IND can be connected between sub-radiant body 808_r1,808_r2 or between sub-radiant body 808_r1,808_r3, therefore can do adaptive adjustment with different application.
As previously mentioned, in different application, may need a plurality of electric capacity could block radiant body 108 to the direct current signal path of grounding assembly 104, common example is as slot antenna, slotted eye integrated antennas etc.These use the variation of a plurality of electric capacity in response to many direct current signals path, should belong to the common technology of those of ordinary skill in the art, therefore be not repeated herein.
In addition, for not thering is the antenna of direct current access path between radiant body and ground, please refer to Fig. 9, the schematic diagram of the radio communication device 90 that Fig. 9 is the embodiment of the present invention.Radio communication device 90 can be any electronic product with radio communication function, and as mobile phone, computer system, wireless access point device etc., it is consisted of a radio frequency signal processing equipment 900 and a radio-frequency unit 902 briefly.Radio frequency signal processing equipment 900 is used for producing a radiofrequency signal RF_sig, and the induction result CAP_rst of the environment capacitance that can return according to radio-frequency unit 902, adjusts the energy of radiofrequency signal RF_sig.Radio-frequency unit 902 includes an antenna 906, a capacitive sensing assembly 914, flow resistance intercepts assembly 920 every assembly 918 and a high frequency always, and antenna 906 includes a radiant body 908 and a signal feed-in assembly 910.Direct current intercepts assembly 918 and is electrically connected between radiant body 908 and signal feed-in assembly 910, be used for blocking radiant body 908 to the direct current signal path of signal feed-in assembly 910, and high frequency obstruct assembly 920 is electrically connected between radiant body 908 and capacitive sensing assembly 914, be used for blocking radiant body 908 to the high-frequency signal path of capacitive sensing assembly 914.Capacitive sensing assembly 914 is electrically connected at radiant body 908, is used for by radiant body 908, and the environment capacitance of induction particular range, and produce according to this induction result CAP_rst.
In simple terms, function mode and radio communication device 10 at radio communication device 90 are similar, by capacitive sensing assembly 914, via high frequency, intercepting assembly 920 utilizes radiant body 908 to carry out induced environment capacitance, and induction result CAP_rst is sent to radio frequency signal processing equipment 900, make radio frequency signal processing equipment 900 adjust according to this energy of radiofrequency signal RF_sig, and utilize direct current to intercept assembly 918 blocking-up radiant bodies 908 to the direct current signal path of signal feed-in assembly 910, the situation that prevents misoperation occurs, and increase the distance of reaction of capacitive sensing assembly 914.Radio communication device 90 is between antenna 906 and ground, not have direct current access path with radio communication device 10 differences, so radio-frequency unit 902 does not need as radio-frequency unit 102, to need to utilize direct current to intercept assembly blocking-up antenna to the direct current signal path on ground.Radio communication device 90 does not also need to increase receiver or sensor, but utilizes original radiant body 908 in radio-frequency unit 902 to carry out the induction of environment capacitance.Thus, not only can avoid affecting the radiation efficiency of antenna 906, also can dwindle the size of radio communication device 90.The more important thing is, for the different communication systems with close bandwidth requirements, only need design single antenna, thereby can reduce design and production cost, and be conducive to part management.
Should be noted, 90 explanations of the radio communication device of Fig. 9 are for not having the antenna of direct current access path between radiant body and ground, as why not increased, may affect the receiver of antenna efficiency or inductor, and actual induction human body proximity situation.Other derivative variations can be imitated aforesaid embodiment and obtain, and are not limited to this.For instance, please refer to Figure 10, the schematic diagram of the radio-frequency unit 1002 that Figure 10 is the embodiment of the present invention.One execution mode of the radio-frequency unit 902 that radio-frequency unit 1002 is Fig. 9, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 1002 includes an antenna 1006, a capacitive sensing assembly 1014, flow resistance intercepts assembly 1020 every assembly 1018 and a high frequency always, antenna 1006 includes a radiant body 1008 and a signal feed-in assembly 1010.As shown in Figure 10, antenna 1006 is a unipole antenna, in addition, only need to guarantee that capacitive sensing assembly 1014 can intercept assembly 1020 by high frequency and be electrically connected at radiant body 1008, and radiant body 1008 to the direct current signal path of signal feed-in assembly 1010 is blocked by direct current obstruct assembly 1018, other all can suitably be adjusted as setting position of capacitive sensing assembly 1014 etc., therefore be not repeated herein.
Please refer to Figure 11, the schematic diagram of the radio-frequency unit 1102 that Figure 11 is the embodiment of the present invention.One execution mode of the radio-frequency unit 902 that radio-frequency unit 1102 is Fig. 9, therefore the assembly of identical function adopts identical naming method, that is radio-frequency unit 1102 includes an antenna 1106, a capacitive sensing assembly 1114, flow resistance intercepts assembly 1120 every assembly 1118 and a high frequency always, antenna 1106 includes a radiant body 1108 and a signal feed-in assembly 1110.As shown in Figure 11, antenna 1106 is a plate aerial, and therefore, capacitive sensing assembly 1114 preferably intercepts assembly 1120 by high frequency and is electrically connected at radiant body 1108, but is not limited to this.
Whether and between ground above-described embodiment has direct current access path according to the radiant body of antenna, and be divided into two large class declarations, in order to illustrate the present invention, do not need to increase receiver or sensor, but utilize original radiant body in radio-frequency unit to carry out the induction of environment capacitance, in addition, radio-frequency unit also utilizes direct current to intercept assembly blocking-up radiant body to the direct current signal path of signal feed-in assembly, and utilizes high frequency to intercept assembly blocking-up radiant body to the high-frequency signal path of capacitive sensing assembly.Thus, can avoid affecting the radiation efficiency of antenna, the situation that prevents misoperation occurs, and increase the distance of reaction of capacitive sensing assembly, the more important thing is, for the different communication systems with close bandwidth requirements, only need design single antenna, thereby can reduce design and production cost, and be conducive to part management.
On the other hand, for the function mode of radio frequency signal processing equipment 100 or 900, be not limited to ad hoc rules, as long as can, according to induction result CAP_rst, suitably adjust the energy of radiofrequency signal RF_sig.Clearer and more definite, when induction result CAP_rst shows human body proximity, should reduce the energy of radiofrequency signal RF_sig.For instance, please refer to Figure 12, the schematic diagram of the radio frequency signal processing equipment 1200 that Figure 12 is the embodiment of the present invention.Radio frequency signal processing equipment 1200 is an execution mode of the radio frequency signal processing equipment 900 of Fig. 1 radio frequency signal processing equipment 100 or Fig. 9.Radio frequency signal processing equipment 1200 includes a signal generator module 1212, an attenuation module 1214 and a handover module 1216.Signal generator module 1212 is used for producing radiofrequency signal RF_sig, and attenuation module 1214 is consisted of resistance R 1～R3, is used for deamplification energy.Handover module 1216 is coupled to signal feed-in assembly (as 110,910 etc.), capacitive sensing assembly (as 114,914 etc.), signal generator module 1212 and attenuation module 1214, it comprises switch SW1, SW2, the induction result CAP_rst being used at capacitive sensing assembly shows when the environment capacitance of particular range is greater than a preset value, attenuation module 1214 is linked between signal generator module 1212 and signal feed-in assembly, makes the radiofrequency signal that signal generator module 1212 is exported after attenuation module 1214 damping capacities, be sent to signal feed-in assembly; Otherwise, when the induction result CAP_rst of capacitive sensing assembly shows that the environment capacitance of particular range is not greater than preset value, signal generator module 1212 is directly linked to signal feed-in assembly, makes the radiofrequency signal that signal generator module 1212 is exported directly be sent to signal feed-in assembly.Thus, when induction result CAP_rst shows 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 induction result CAP_rst demonstration does not have human body proximity, 1200 energy that maintain radiofrequency signal RF_sig of radio frequency signal processing equipment, to maintain antenna efficiency.
In addition, please refer to Figure 13, the schematic diagram of the radio frequency signal processing equipment 1300 that Figure 13 is the embodiment of the present invention.Radio frequency signal processing equipment 1300 is an execution mode of the radio frequency signal processing equipment 900 of Fig. 1 radio frequency signal processing equipment 100 or Fig. 9.Radio frequency signal processing equipment 1300 includes a signal generator module 1312, a resistance 1314 and a handover module 1316.Signal generator module 1312 is used for producing radiofrequency signal RF_sig, and is electrically connected at resistance 1314 and signal feed-in assembly (as 110,910 etc.).Handover module 1316 is coupled to systematically end, capacitive sensing assembly (as 114,914 etc.) and resistance 1314, the induction result CAP_rst being used at capacitive sensing assembly shows when the environment capacitance of particular range is greater than a preset value, conducting resistance 1314 is to the systematically link of end, radiofrequency signal that signal generator module 1312 is exported is partly branched to and hold, thereby reduce the energy of the radiofrequency signal RF_sig that is sent to signal feed-in assembly; Otherwise, when the induction result CAP_rst of capacitive sensing assembly shows that the environment capacitance of particular range is not greater than preset value, cut off resistance 1314 to the systematically link of end, make the radiofrequency signal that signal generator module 1312 is exported directly be sent to signal feed-in assembly, thereby maintain the energy of the radiofrequency signal RF_sig that is sent to signal feed-in assembly.Thus, when induction result CAP_rst shows human body proximity, radio frequency signal processing equipment 1300 can reduce the energy of radiofrequency signal RF_sig, to avoid affecting human body; And when induction result CAP_rst demonstration does not have human body proximity, 1300 energy that maintain radiofrequency signal RF_sig of radio frequency signal processing equipment, to maintain antenna efficiency.
In addition, supply power mode about handover module in radio frequency signal processing equipment 1200 and 1,300 1216,1316, DC power supply can be embedded in radiofrequency signal RF_sig, by filter, shunt circuit etc., DC power supply is taken out and is supplied to handover module 1216,1316 again, this should be technology well known in the art.
On the other hand, in the aforementioned embodiment, capacitive sensing assembly 114,214,314,414,514,614,714,814,914,1014,1114 is used for responding to the environment capacitance of particular range, and its implementation is unlimited, can suitably adjust in response to system requirements.For instance, please refer to Figure 14, Figure 14 is the schematic diagram of the capacitive sensing assembly 1400 of the embodiment of the present invention one.Capacitive sensing assembly 1400 can replace or realize the capacitive sensing assembly 114,214,314,414,514,614,714,814,914,1014,1114 in previous embodiment, and it includes judging unit 1402 and an one capacitor C _ INT.Judging unit 1402 connects radiant body (as radiant body 108,208,308,408,508,608,708,808,908,1008,1108) by a pin PIN_Sensing, whether the voltage that is used for detecting pin PIN_Sensing reaches critical voltage value V_STEP, according to the voltage of pin PIN_Sensing, reach the needed charging times of critical voltage value again and whether surmount N_CHARGE+N_BARRIER, judged whether that foreign object is close, thus output induction result CAP_rst.Wherein, critical voltage value V_STEP represents that capacitor C _ INT completes the critical voltage value of charging to pin PIN_Sensing; Charging times N_CHARGE represent when without foreign object near time, capacitor C _ INT charges to pin PIN_Sensing, makes the voltage of pin PIN_Sensing reach the required charging times of critical voltage value V_STEP; Barrier charging times N_BARRIER is the misoperation causing for fear of environment slight variations, the barrier charging times of adding for charging times N_CHARGE, 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) to ground, can be equivalent to a capacitor C _ Sensing to ground; Wherein, should be noted, capacitor C _ Sensing is an equivalent capacity, and it is not present in entity structure, yet the function mode for explanation capacitive sensing assembly 1400, is still illustrated in Figure 14.When close without foreign object time, capacitor C _ INT can reach the needed charging times of critical voltage value V_STEP to capacitor C _ Sensing charging and be charging times N_CHARGE; In other words, charging times N_CHARGE can be used as foreign object near the foundation of judgement, and barrier charging times N_BARRIER additionally considers the impact that environment slight variations causes.Therefore, when foreign object near and while making capacitor C _ INT charge to the needed charging times of critical voltage value V_STEP and surmount N_CHARGE+N_BARRIER pin PIN_Sensing, the judging unit 1402 close event of foreign object that can correctly judge occurs, thereby exports corresponding induction result CAP_rst(as logical one); Otherwise, when close without foreign object, or when foreign object near when but capacitor C _ INT charges to the needed charging times of critical voltage value V_STEP and does not surmount N_CHARGE+N_BARRIER pin PIN_Sensing, represent that the close event of foreign object is not triggered, judging unit 1402 is exported corresponding induction result CAP_rst(as logical zero).
Further, as shown in figure 14, human body or hand can be equivalent to a capacitor C _ HAND over the ground for earth level, therefore when human body or hand are during near capacitive sensing assembly, the capacitance of pin PIN_Sensing will increase because of Capacitance parallel connection, that is C_Sensing+C_HAND, capacitance increase will make capacitor C _ INT charge to the needed charging times of critical voltage value V_STEP to pin PIN_Sensing to be increased.By this, when charging times surmounts N_CHARGE+N_BARRIER, the foreign object that can correctly judge occurs near event, and shows corresponding information (as logical one) at induction result CAP_rst, and expression human body detected or hand is close.
Should be noted, Figure 14 explanation is applicable to an implementation of capacitive sensing assembly of the present invention, and those of ordinary skill in the art should suitably adjust in response to system requirements, is not limited to this.
In known technology, in order to take into account to reduce, disturb and maintain two kinds of demands of antenna performance, conventionally utilize the capacitance variations that approaches inductor sensing human body proximity, thus judgement human body proximity situation.Yet, approaching inductor and need comprise receiver or the sensor with metal material, the receiver that this is additional or sensor can exert an influence to antenna efficiency, and need to spend extra cost with adjustment antenna.By contrast, the present invention does not need to increase receiver or sensor, but utilize existing radiant body to carry out the induction of environment capacitance, in addition, utilize direct current intercept assembly radiation-inhibiting body to the direct current signal of signal feed-in assembly, utilize high frequency to intercept assembly radiation-inhibiting body to the high-frequency signal of capacitive sensing assembly, increase induction metallic area simultaneously.Thus, not only can save the usage space of capacitive sensing assembly and avoid affecting the radiation efficiency of antenna, also can increase the distance of reaction of inductive component, the more important thing is, for the different communication systems with close bandwidth requirements, only need design single antenna, other assemblies can be used same size and not need to redesign, thereby can reduce design and production cost, and be conducive to part management.
In sum, the present invention utilizes the environment capacitance of the radiant body induction particular range of antenna, and adjust according to this wireless energy signal, thereby can avoid affecting the radiation efficiency of antenna, meanwhile, only needing design single antenna is the applicable different communication systems with close bandwidth requirements, can further reduce design and production cost, and be conducive to part management, make that radio-frequency unit reaches small size, high efficiency, environmental suitability is high and the characteristic of low interference.
The foregoing is only preferred embodiment of the present invention, every equivalent variations of doing according to the scope of the claims in the present invention book and modification, all should belong to covering scope of the present invention.
Claims (28)
1. a radio-frequency unit, this radio-frequency unit is for a radio communication device, and this radio-frequency unit comprises:
One grounding assembly, this grounding assembly is used to provide ground connection;
One antenna, this antenna comprises:
One radiant body;
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
One earth terminal, this earth terminal is used for coupling this grounding assembly;
One capacitive sensing assembly, this capacitive sensing assembly is used for by this radiant body, an environment capacitance of induction one particular range;
One first direct current intercepts assembly, and this first direct current intercepts assembly and is electrically connected between this earth terminal and this grounding assembly of this antenna, is used for blocking this earth terminal to a direct current signal path of this grounding assembly;
One second direct current intercepts assembly, and this second direct current intercepts assembly and is electrically connected between this radiant body and this signal feed-in assembly, is used for blocking this radiant body to a direct current signal path of this signal feed-in assembly; And
One high frequency intercepts assembly, and this high frequency intercepts assembly and is electrically connected between this radiant body and this capacitive sensing assembly, is used for blocking this radiant body to a high-frequency signal path of this capacitive sensing assembly.
2. radio-frequency unit as claimed in claim 1, wherein to intercept assembly be an inductance, a coupling assembling or a composite component to this high frequency.
3. radio-frequency unit as claimed in claim 1, wherein this first direct current intercepts assembly and this second direct current to intercept assembly is an electric capacity, a coupler or a composite component.
4. radio-frequency unit as claimed in claim 1, wherein this antenna is a planar inverted-F antenna, a dipole antenna, a collapsible dipole antenna, a loop antenna, a microstrip antenna or an integrated antennas.
5. radio-frequency unit as claimed in claim 1, wherein to intercept the scope of an equivalent capacitance value of assembly be 3.3pF to 56pF to this second direct current.
6. radio-frequency unit as claimed in claim 1, wherein to intercept the scope of an equivalent capacitance value of assembly be 3.3pF to 33pF to this one first direct current.
7. radio-frequency unit as claimed in claim 1, wherein this radiant body comprises one first sub-radiant body and one second sub-radiant body, and this antenna also comprises an inductance, and this inductance is electrically connected between this first sub-radiant body and this second sub-radiant body.
8. radio-frequency unit as claimed in claim 7, wherein one of this inductance equivalent inductance value is greater than 33nH.
9. a radio communication device, this radio communication device comprises:
One radio frequency signal processing equipment, this radio frequency signal processing equipment is used for producing a 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;
One antenna, this antenna comprises:
One radiant body;
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
One earth terminal, this earth terminal is used for coupling this grounding assembly;
One capacitive sensing assembly, this capacitive sensing assembly is used for by this radiant body, an environment capacitance of induction one particular range;
One first direct current intercepts assembly, and this first direct current intercepts assembly and is electrically connected between this earth terminal and this grounding assembly of this antenna, is used for blocking this earth terminal to a direct current signal path of this grounding assembly;
One second direct current intercepts assembly, and this second direct current intercepts assembly and is electrically connected between this radiant body and this signal feed-in assembly, is used for blocking this radiant body to a direct current signal path of this signal feed-in assembly; And
One high frequency intercepts assembly, and this high frequency intercepts assembly and is electrically connected between this radiant body and this capacitive sensing assembly, is used for blocking this radiant body to a high-frequency signal path of this capacitive sensing assembly.
10. radio communication device as claimed in claim 9, wherein to intercept assembly be an inductance, a coupling assembling or a composite component to this high frequency.
11. radio communication devices as claimed in claim 9, wherein this first direct current obstruct assembly and this second direct current obstruct assembly are an electric capacity, a coupler or a composite component.
12. radio communication devices as claimed in claim 9, wherein this antenna is a planar inverted-F antenna, a dipole antenna, a collapsible dipole antenna, a loop antenna, a microstrip antenna or an integrated antennas.
13. radio communication devices as claimed in claim 9, wherein the scope of an equivalent capacitance value of this second direct current obstruct assembly is 3.3pF to 56pF.
14. radio communication devices as claimed in claim 9, wherein the scope of an equivalent capacitance value of this one first direct current obstruct assembly is 3.3pF to 33pF.
15. radio communication devices as claimed in claim 9, wherein this radiant body comprises one first sub-radiant body and one second sub-radiant body, and this antenna also comprises an inductance, and this inductance is electrically connected between this first sub-radiant body and this second sub-radiant body.
16. radio communication devices as claimed in claim 15, wherein one of this inductance equivalent inductance value is greater than 33nH.
17. radio communication devices as claimed in claim 9, 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 induction result of this capacitive sensing assembly shows that this environment capacitance of this particular range is greater than a preset value, this attenuation module is linked 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.
18. radio communication devices as claimed in claim 9, 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 induction result of this capacitive sensing assembly shows that this environment capacitance of this particular range is greater than a preset value, this resistance of conducting, to the link of this ground end, makes this radiofrequency signal partly branch to this ground end.
19. 1 kinds of radio-frequency units, this radio-frequency unit is 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;
One capacitive sensing assembly, this capacitive sensing assembly is used for by this radiant body, an environment capacitance of induction one particular range;
Flow resistance is every assembly always, and this direct current intercepts assembly and is electrically connected between this radiant body and this signal feed-in assembly, is used for blocking this radiant body to a direct current signal path of this signal feed-in assembly; And
One high frequency intercepts assembly, and this high frequency intercepts assembly and is electrically connected between this radiant body and this capacitive sensing assembly, is used for blocking this radiant body to a high-frequency signal path of this capacitive sensing assembly;
Wherein, this signal feed-in assembly or this capacitive sensing assembly are blocked the direct current signal path between this radiant body to one ground end.
20. radio-frequency units as claimed in claim 19, wherein this high frequency obstruct assembly is an inductance, a coupling assembling or a composite component.
21. radio-frequency units as claimed in claim 19, wherein this direct current obstruct assembly is an electric capacity, a coupler or a composite component.
22. radio-frequency units as claimed in claim 19, wherein this antenna is a unipole antenna or a plate aerial.
23. 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 producing a 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;
One capacitive sensing assembly, this capacitive sensing assembly is used for by this radiant body, an environment capacitance of induction one particular range;
Flow resistance is every assembly always, and this direct current intercepts assembly and is electrically connected between this radiant body and this signal feed-in assembly, is used for blocking this radiant body to a direct current signal path of this signal feed-in assembly; And
One high frequency intercepts assembly, and this high frequency intercepts assembly and is electrically connected between this radiant body and this capacitive sensing assembly, is used for blocking this radiant body to a high-frequency signal path of this capacitive sensing assembly;
Wherein, this signal feed-in assembly or this capacitive sensing assembly are blocked the direct current signal path between this radiant body to one ground end.
24. radio communication devices as claimed in claim 23, wherein this high frequency obstruct assembly is an inductance, a coupling assembling or a composite component.
25. radio communication devices as claimed in claim 23, wherein this direct current obstruct assembly is an electric capacity, a coupler or a composite component.
26. radio communication devices as claimed in claim 23, wherein this antenna is a unipole antenna or a plate aerial.
27. radio communication devices as claimed in claim 23, 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 induction result of this capacitive sensing assembly shows that this environment capacitance of this particular range is greater than a preset value, this attenuation module is linked 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.
28. radio communication devices as claimed in claim 23, 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 induction result of this capacitive sensing assembly shows that this environment capacitance of this particular range is greater than a preset value, this resistance of conducting, to the link of this ground end, makes this radiofrequency signal partly branch to this ground end.
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| CN105224895B (en) * | 2014-07-03 | 2018-01-23 | 启碁科技股份有限公司 | Radio frequency recognition reading device |
| CN105224895A (en) * | 2014-07-03 | 2016-01-06 | 启碁科技股份有限公司 | Radio frequency recognition reading device |
| CN106033979A (en) * | 2015-03-03 | 2016-10-19 | 晶钛国际电子股份有限公司 | Communication device |
| CN106299615A (en) * | 2015-06-12 | 2017-01-04 | 联想移动通信科技有限公司 | A kind of antenna and electronic equipment |
| CN106229614A (en) * | 2015-09-11 | 2016-12-14 | 耀登电通科技（昆山）有限公司 | proximity sensing type antenna device and antenna structure thereof |
| CN106207375B (en) * | 2016-06-30 | 2019-08-27 | 联想(北京)有限公司 | A kind of electronic equipment |
| CN106207375A (en) * | 2016-06-30 | 2016-12-07 | 联想(北京)有限公司 | A kind of electronic equipment |
| CN106534584A (en) * | 2016-12-15 | 2017-03-22 | 奇酷互联网络科技（深圳）有限公司 | Operation mode switching method and device and mobile terminal |
| CN106791072A (en) * | 2016-12-15 | 2017-05-31 | 奇酷互联网络科技（深圳）有限公司 | Antenna-switching device, method and mobile terminal |
| CN106450682A (en) * | 2016-12-15 | 2017-02-22 | 奇酷互联网络科技（深圳）有限公司 | Antenna device, antenna switching method and mobile terminal |
| CN106654573A (en) * | 2017-01-24 | 2017-05-10 | 耀登电通科技（昆山）有限公司 | Radio-frequency antenna apparatus |
| CN107566577A (en) * | 2017-09-29 | 2018-01-09 | 努比亚技术有限公司 | Mobile terminal |
| CN110763923A (en) * | 2018-07-25 | 2020-02-07 | 西安中兴新软件有限责任公司 | Specific absorption rate value control method and mobile terminal |
| CN109462884A (en) * | 2018-12-29 | 2019-03-12 | 联想(北京)有限公司 | A kind of electronic equipment and control method |
| CN113675586A (en) * | 2020-05-13 | 2021-11-19 | 启碁科技股份有限公司 | Electronic device |
| CN112068641A (en) * | 2020-08-26 | 2020-12-11 | 常熟市泓博通讯技术股份有限公司 | Antenna control system suitable for proximity sensing |
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