WO2019237514A1 - 具有抗干扰设置的天线及其制造方法 - Google Patents

具有抗干扰设置的天线及其制造方法 Download PDF

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Publication number
WO2019237514A1
WO2019237514A1 PCT/CN2018/102816 CN2018102816W WO2019237514A1 WO 2019237514 A1 WO2019237514 A1 WO 2019237514A1 CN 2018102816 W CN2018102816 W CN 2018102816W WO 2019237514 A1 WO2019237514 A1 WO 2019237514A1
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Prior art keywords
radiation source
antenna
connection
reference ground
radiation
Prior art date
Application number
PCT/CN2018/102816
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English (en)
French (fr)
Inventor
邹高迪
邹新
Original Assignee
深圳迈睿智能科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳迈睿智能科技有限公司 filed Critical 深圳迈睿智能科技有限公司
Priority to CN201880001185.4A priority Critical patent/CN109314315B/zh
Priority to CN202011249131.5A priority patent/CN112467375B/zh
Priority to CN202011249140.4A priority patent/CN112467376B/zh
Publication of WO2019237514A1 publication Critical patent/WO2019237514A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/52Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/52Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/0006Particular feeding systems
    • H01Q21/0075Stripline fed arrays
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/06Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061Two dimensional planar arrays
    • H01Q21/065Patch antenna array
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00Antennas with active circuits or circuit elements integrated within them or attached to them
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/328Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/0407Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38Impedance-matching networks
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/16Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Definitions

  • the invention relates to an antenna, in particular to an antenna having anti-interference settings, wherein the anti-interference method prevents electromagnetic wave signals received or generated by the antenna from being interfered by adjacent electromagnetic radiation frequencies or stray radiation frequencies, thereby improving the antenna's immunity. Interference performance.
  • ISM (Industrial, Scientific and Medical) Bands are unlicensed frequency bands defined by ITU-R (ITU Radiocommunication Sector) for use by organizations such as industry, science, and medicine. They are using these frequency bands. It is necessary to observe a certain transmission power (generally, the transmission power is less than 1W) and not cause interference to other frequency bands.
  • the frequency bands used for microwave detection in these bands opened by ITU-R are mainly located in 2.4Ghz, 5.8Ghz, 10.525Ghz, 24.125Gh and other frequency bands.
  • many new frequency bands have been frequently used in microwave detection
  • 5G technology has led to the use of new frequency bands outside the existing frequency bands for microwave detection.
  • the way to improve the interference resistance of the antenna used for microwave detection was a suppression method.
  • the aforementioned interference was suppressed by shielding external wireless signals, signal filtering, and software algorithm processing.
  • these traditional methods can only provide limited anti-interference performance for a limited frequency band. Therefore, an antenna capable of improving anti-interference performance in different frequency bands is needed, that is, the antenna mainly referred to in this disclosure is provided.
  • An advantage of the present invention is to provide an antenna with an anti-interference setting and method, wherein the anti-interference setting improves the anti-interference performance of the antenna.
  • An advantage of the present invention is to provide an antenna having an anti-interference setting and method, wherein the anti-interference setting effectively prevents electromagnetic wave signals received or generated by the antenna from being interfered by adjacent electromagnetic radiation frequencies or stray radiation frequencies.
  • An advantage of the present invention is to provide an antenna having an anti-interference setting and method, wherein the impedance of the antenna is reduced to narrow the bandwidth of the antenna, thereby preventing electromagnetic wave signals received or generated by the antenna from being phased out. Interference from adjacent electromagnetic radiation frequencies or stray radiation frequencies.
  • An advantage of the present invention is to provide an antenna with anti-interference settings and methods, wherein the impedance of the antenna can be reduced. While reducing the impedance of the frequency at which the antenna operates, it also exhibits extremely low frequencies for frequencies outside the non-operating frequency. The impedance is low or even close to zero ohms to enhance the radiation energy of the main radiation wave of the antenna in its radiation frequency band, thereby reducing the harmonic radiation of the antenna and reducing the stray radiation of the antenna.
  • An advantage of the present invention is to provide an antenna with anti-interference settings and methods, wherein the antenna has an anti-interference circuit, and wherein the anti-interference circuit has a low impedance to match the low-impedance antenna in order to make the antenna's
  • the frequency bandwidth is narrowed so as to avoid electromagnetic wave signals received or generated by the antenna of the present invention from being interfered by any adjacent electromagnetic radiation frequencies.
  • An advantage of the present invention is to provide an antenna with anti-interference settings and methods, wherein the radiation source is grounded to reduce the impedance of the antenna.
  • An advantage of the present invention is to provide an antenna having an anti-interference setting and method, wherein the radiation source is electrically connected to the reference ground so that the radiation source is grounded.
  • An advantage of the present invention is to provide an antenna with anti-interference settings and methods, wherein the anti-interference circuit provides a larger excitation current to the radiation source to ensure stable operation of the antenna.
  • An advantage of the present invention is to provide an antenna with anti-interference settings and methods, wherein the radiation source has at least one connection point of the radiation source and is electrically connected to the reference ground. There is a preset distance between the edges of the radiation source and the connection point of the radiation source, so that the electrical characteristics of the inductance are generated under the excitation of the microwave excitation electric signal.
  • An advantage of the present invention is to provide an antenna with anti-interference settings and methods, wherein the distance between the connection point of the radiation source and the feed point is greater than or equal to 1 / 64 ⁇ , so that the effect of the microwave excitation electric signal Next, an electrical characteristic of an inductance is generated between the feed point and the connection point of the radiation source.
  • An advantage of the present invention is to provide an antenna having an anti-interference setting and method, wherein the impedance of the antenna is reduced in a resonance state by forming the radiation source connection point of the radiation source at its physical midpoint, Thereby, the anti-interference performance of the antenna is improved.
  • An advantage of the present invention is to provide an antenna having an anti-interference setting and method, wherein the electrical connection element has two ends, which are electrically connected to the radiation source and the reference ground, respectively, so as to reduce the resonance in a resonance state.
  • the internal impedance of the antenna thereby improving the anti-interference performance of the antenna.
  • An advantage of the present invention is to provide an antenna with an anti-interference setting and method, wherein the connection point of the radiation source coincides with the feed point, thereby electrically connecting the feed point with the reference ground to be in a resonance state. Lowering the internal impedance of the antenna, thereby improving the anti-interference performance of the antenna.
  • an antenna which includes:
  • At least one radiation source wherein the radiation sources are disposed adjacent to the reference ground to define a radiation gap between the radiation source and the reference ground, wherein the radiation source is electrically connected to the reference ground Ground reference to ground the radiation source, thereby narrowing the bandwidth of the antenna.
  • the present invention further provides a method for manufacturing an antenna, wherein the antenna includes at least a radiation source and a reference ground, and the method for manufacturing includes the following steps:
  • the radiation source is set adjacent to the reference ground to form a radiation gap between the radiation source and the reference ground;
  • the present invention provides a method for improving anti-interference performance of an antenna, wherein the antenna includes at least a radiation source and a reference ground, and the method includes the following steps:
  • a radiation gap is formed between the radiation source and the reference ground.
  • FIG. 1 is a schematic perspective view of an antenna with anti-interference setting according to a first preferred embodiment of the present invention.
  • FIG. 2 is a sectional view of the antenna according to the first preferred embodiment of the present invention.
  • FIG. 3 shows a first modified embodiment of the antenna according to the first preferred embodiment of the present invention.
  • FIG. 4 shows a second modified embodiment of the antenna according to the first preferred embodiment of the present invention.
  • FIG 5 is a cross-sectional view of the antenna according to a second modified embodiment of the first preferred embodiment of the present invention.
  • FIG. 6A shows a third modified embodiment of the antenna according to the first preferred embodiment of the present invention.
  • FIG. 7A shows a fourth modified embodiment of the antenna according to the first preferred embodiment of the present invention.
  • FIG. 7B is a cross-sectional view of the antenna according to a fourth modified embodiment of the first preferred embodiment of the present invention.
  • FIG. 8 is a circuit diagram of an anti-interference circuit of the antenna according to the first preferred embodiment of the present invention.
  • FIG. 9 is a schematic perspective view of an antenna with anti-interference settings according to a second preferred embodiment of the present invention.
  • FIG. 10 is a sectional view of the antenna according to the above-mentioned second preferred embodiment of the present invention.
  • FIG. 11 is a schematic perspective view of an antenna with an anti-interference setting according to a third preferred embodiment of the present invention.
  • FIG. 12 is a sectional view of the antenna according to the third preferred embodiment of the present invention.
  • FIG. 13 is a schematic perspective view of an antenna with anti-interference settings according to a fourth preferred embodiment of the present invention.
  • FIG. 14 is a cross-sectional view of the antenna according to the fourth preferred embodiment of the present invention.
  • FIG. 15 shows the antenna according to a modified embodiment of the fourth preferred embodiment of the present invention.
  • the term “a” should be understood as “at least one” or “one or more”, that is, in one embodiment, the number of one element can be one, and in other embodiments, the number of The number may be plural, and the term “a” cannot be understood as a limitation on the number. Therefore, the above terms should not be taken as a limitation on the actual numbers of the elements of the present invention.
  • the antenna includes a reference ground 10 and at least one radiation source 20, wherein The radiation source 20 is disposed adjacent to a first side surface 101 of the reference ground 10 to form an antenna body. Accordingly, the antenna further includes an oscillating circuit electrically coupled to the antenna body.
  • the radiation source 20 of the present invention is separated adjacent to the reference ground 10, that is, there is no direct contact between the radiation source 20 and the reference ground 10.
  • a space is reserved between the reference ground 10 and the radiation source 20 as a radiation gap 30 therebetween.
  • the radiation gap 30 formed between the reference ground 10 and the radiation source 20 refers to a surface difference between a surface of the radiation source 20 and a surface of the reference ground 10.
  • the radiation gap 30 formed between the radiation source 20 and the reference ground 10 is the first side 101 of the reference ground 10 A height difference from the outer surface of the radiation source 20.
  • the radiation gap 30 formed between the radiation source 20 and the reference ground 10 is a peripheral surface of the radiation source 20 and the radiation source 20. A distance between the first sides 101 of the reference ground 10. It can be seen that the formation of the radiation gap 30 between the radiation source 20 and the reference ground 10 is not limited to its only two designated surfaces.
  • the radiation source 20 and the reference ground 10 are electrically connected, wherein the radiation source 20 is grounded. It is worth mentioning that in the configuration of the conventional antenna, the radiation source is not grounded and is not electrically connected to the reference ground. By grounding the radiation source 20, the impedance of the antenna of the present invention can be greatly reduced, so that the bandwidth of the antenna is narrowed, which is beneficial to avoid interference of electromagnetic radiation frequencies or stray radiation frequencies in adjacent frequency bands. An electromagnetic wave signal received or generated by the antenna of the present invention.
  • the radiation source 20 has at least one radiation source connection point 21 and a feeding point 22.
  • the reference ground 10 further has at least one reference ground connection point 11.
  • the radiation source connection point 21 of the radiation source 20 is electrically connected to the reference ground connection point 11 of the reference ground 10 so that the radiation source 20 is grounded.
  • the feed point 22 of the radiation source 20 is set to be connected to an excitation current. Accordingly, the oscillating circuit is connected to the feeding point 22 of the antenna body to generate the electromagnetic wave signal (microwave excited electric signal). Once the exciting current is fed by the feeding point of the radiation source 20 22 access, the antenna will be initialized in a polarization direction, and the radiation source 20 will radiate outward to generate radiant energy.
  • the radiation source 20 is electrically connected to the reference ground 10 to ground the radiation source 20.
  • the connection between the radiation source connection point 21 and the feed point 22 of the radiation source is The inductive characteristic will generate a certain impedance, so that the antenna is excited and initialized in a polarization direction so that the radiation source 20 emits radiant energy outwardly.
  • the radiation source connection point 21 and the feeding point 22 of the radiation source 20 will have a lower impedance due to their inductance characteristics, so that the bandwidth of the antenna is narrowed, so that the The antenna can greatly reduce any interference caused by the electromagnetic radiation frequency or the spurious radiation frequency of the adjacent frequency band by the narrowed bandwidth of the electromagnetic wave signal received or generated by the antenna.
  • the feeding point 22 of the radiation source 20 will inevitably deviate from its physical midpoint, so that it will be easily excited by the excitation current.
  • the impedance of the antenna can be reduced to increase the radiant energy of its main radiation wave in its radiation frequency band, thereby reducing the harmonic radiation of the antenna.
  • the antenna not only generates the electromagnetic wave in its radiating frequency band, but also generates harmonics, that is, stray radiation, in the frequency doubling of its radiating frequency band.
  • a distance between the radiation source connection point 21 and the feeding point 22 of the radiation source 20 is greater than or equal to 1 / 64 ⁇ , where ⁇ is a wavelength of an electromagnetic wave signal received or generated by the antenna, and Under the excitation of the microwave excitation electric signal, the electromagnetic wave signal will generate an inductive characteristic between the radiation source connection point 21 and the feed point 22 of the radiation source 20.
  • the feeding point 22 of the radiation source 20 is deviated from the physical midpoint of the radiation source 20, the magnitude requirement of the antenna for the excitation current for the electromagnetic wave signal will be greatly reduced. Therefore, when the excitation current is connected from the feeding point 22 of the radiation source 20, the antenna is more easily initialized in the polarization direction.
  • the radiation source connection point 21 of the radiation source 20 is preferably defined as a physical midpoint of the radiation source 20.
  • the physical midpoint of the radiation source 20 is electrically connected to the reference ground 10 of the radiation source 20, thereby forming the radiation source connection point of the radiation source 20 at its physical midpoint. 21 enables the antenna to generate radiation energy uniformly and stably outward through the radiation source 20 after generating the initial polarization direction.
  • the edge of the radiation source 20 and the feed point 22 of the radiation source 20 generate inductance under the excitation of the excitation current, and the radiation source 20 and the reference ground 10 A resonant circuit of the antenna with distributed capacitance is generated therebetween for receiving or generating electromagnetic wave signals.
  • FIG. 1 and FIG. 2 there is only one radiation source connection point 21 of the radiation source 20.
  • FIG. 3 there are two or more radiation source connection points 21 of the radiation source 20, wherein the radiation source connection points 21 of the radiation source 20 surround the radiation source A physical midpoint of 20.
  • a distance is preset between the radiation source connection points 21 of the radiation source 20 and the edges of the radiation source 20, so that under the excitation of the electromagnetic wave signal, all the radiation source 20 An inductance characteristic will be generated between the feeding point 22 and the radiation source connection point 21 of the radiation source 20. Then, when an excitation current is connected to the radiation source 20 from the feeding point 22 of the radiation source 20, the impedance of the antenna will be reduced, thereby narrowing the bandwidth of the antenna.
  • the distance between any of the radiation source connection points 21 and the feed point 22 is greater than or equal to 1 / 64 ⁇ , as shown in FIG. 3.
  • the antenna further includes an electrical connection element 40 having two ends, which are electrically connected to the radiation source connection point 21 of the radiation source 20 and the reference ground 10 respectively.
  • the reference ground connection point 11 forms an electrical connection medium through the electrical connection element 40 to electrically connect the radiation source 20 and the reference ground 10 to each other, so that the radiation source 20 is grounded.
  • the radiation source connection point 21 of the radiation source 20 is directly opposite the reference ground connection point 11 of the reference ground 10, that is, the radiation source 20
  • the extending direction between the radiation source connection point 21 and the reference ground connection point 11 of the reference ground 10 is perpendicular to the first side of the reference ground 10.
  • the electrical connection element 40 is preferably coupled between the radiation source 20 and the reference ground 10 so that both ends of the electrical connection element 40 can be electrically connected to the two ends respectively.
  • the radiation source connection point 21 of the radiation source 20 and the reference ground connection point 11 of the reference ground 10 are used to electrically connect the radiation source 20 to the reference ground 10.
  • the electrical connection between the radiation source 20 and the reference ground 10 should be understood as an electrical impedance that appears between the radiation source 20 and the reference ground 10 under a high-frequency excitation current. Connection Status. Those skilled in the art should understand that under high-frequency excitation current, the capacitive element, the wire itself, the resistive element, and the inductive element can all exhibit an electrical connection state with a certain impedance. In this way, the electrical connection member 40 can be configured by One or more of a conductive wire, a capacitive element, a resistive element, and an inductive element, and can form an impedance electrical connection between the radiation source 20 and the reference ground 10 under a high-frequency excitation current and Emitting electromagnetic waves.
  • the radiation source 20 is held adjacent to the first side 101 of the reference ground 10 to be between the radiation source 20 and the reference ground 10.
  • the radiation gap 30 is formed, and then a reference ground perforation 12 is opened from an opposite second side 102 of the reference ground 10, wherein the reference ground perforation 12 is extended to correspond to the radiation source 20.
  • the radiation gap 30 between the radiation source 20 and the reference ground 10 is a solid medium, as shown in FIG. 1 and FIG. 2.
  • a slot perforation 31 is also opened in the radiation slot 30, wherein the reference ground perforation 12 of the reference ground 10 communicates and extends through the radiation
  • the slot perforation 31 of the slot 30, and the reference ground perforation 12 of the reference ground 10 and the slot perforation 31 of the radiation slot 30 correspond to the radiation source connection point 21 of the radiation source 20.
  • a molding material is sequentially extended from the reference ground perforation 12 of the reference ground 10 and the slot perforation 31 of the radiation gap 30 in order to connect the molding material to the radiation of the radiation source 20
  • the source connection point 21 and the molding material are connected to the reference ground 10 so that the molding material forms the electrical connection element 40 to electrically connect the radiation source 20 and the reference ground 10 to each other.
  • the connection point between the molding material and the reference ground 10 becomes the reference ground connection point 11 of the reference ground.
  • the molding material may be, but is not limited to, gold wire, silver wire, or other wires, and when the molding material is implemented as the connection wire, the connection The line can sequentially extend from the reference ground perforation 12 of the reference ground 10 and the slot perforation 31 of the radiation gap 30 to the radiation source connection point 21 of the radiation source 20 and to the reference Ground 10, thereby forming the electrical connection element 40 that electrically connects the radiation source 20 and the reference ground 10 to each other.
  • connection line is first connected to the radiation source connection point 21 of the radiation source 20, and then the radiation source 20 is maintained near the first side 101 of the reference ground 10 And let the connection line penetrate the preset ground reference hole 12 of the reference ground 10 to be connected to the reference ground 10 so as to form the radiation source 20 and the reference ground 10 electrically with each other
  • the said electrical connection element 40 is connected.
  • the molding material may also be, but not limited to, a fluid, wherein when the molding material is filled in the reference ground perforation 12 of the reference ground 10 and the slot perforation 31 of the radiation gap 30 Then, when the molding material is cured, the molding material will form the electrical connection element 40 that electrically connects the radiation source 20 and the reference ground 10 to each other.
  • the antenna further includes a shielding cover 50, wherein the shielding cover 50 is coupled to the second side 102 of the reference ground 10.
  • the shape of the radiation source 20 of the antenna is not limited.
  • the shape of the radiation source 20 may be set as a quadrangle, as shown in Figs. 1-3. It can also be set as a square.
  • the shape of the radiation source 20 can be set as a circle or an oval, as shown in FIGS. 4 and 5. That is, the extension direction of the radiation source 20 is the same as the extension direction of the reference ground 10, that is, the radiation source 20 is parallel to the reference ground 10, thereby forming a flat plate antenna.
  • the antenna further includes at least one additional inductor 100, wherein one end of the additional inductor 100 is electrically connected to the radiation source connection point 21 of the radiation source 20, and the antenna The other end of the additional inductor 100 is grounded.
  • the radiation source connection point 21 is formed at the connection end 2001 of the radiation source 20, so that one end of the additional inductance 100 is connected to the radiation source from the connection end 2001 of the radiation source 20 At the connection point 21, the other end of the additional inductor 100 is grounded.
  • the antenna further includes an anti-interference circuit 60 electrically connected to the feed point 22 of the radiation source 20 to allow an excitation current to pass through the anti-interference circuit 60 to the radiation source.
  • the anti-interference circuit 60 has a low impedance to provide the excitation current to match the low impedance of the antenna, so that the antenna can generate the initial polarization direction. Since the impedance of the antenna will be reduced and the bandwidth of the antenna will be narrowed, the electromagnetic wave signals received or generated by the antenna will be prevented from being affected by the electromagnetic radiation frequency or stray radiation frequency of the nearby adjacent frequency band. All interference will be greatly reduced.
  • the antenna further includes an analog circuit 70 electrically connected to the radiation source 20 and the reference ground 10 so as to be excited by the excitation current.
  • the analog circuit 70 has a first analog point 71 and a second analog point 72.
  • the first analog point 71 simulates the radiation source connection point 21 of the radiation source 20.
  • the second simulation point 72 simulates the feeding point 22 of the radiation source 20. It is worth mentioning that the antenna body is excited by the excitation current from the oscillating circuit, and behaves as if the analog circuit 70 is excited.
  • the anti-interference circuit 60 includes an oscillating circuit unit 61 (ie, the oscillating circuit) and a mixing detection circuit unit 62 connected to the oscillating circuit unit 61.
  • the second analog point 72 of the analog circuit 70 is electrically connected to the oscillating circuit unit 61 of the anti-interference circuit 60, wherein the frequency mixing detection circuit unit 62 is provided and maintained at the Between the oscillating circuit unit 61 and the radiation source 20.
  • the frequency-mixing detection circuit unit 62 is adapted to the low-impedance output of the oscillating circuit unit 61 and the low-impedance of the antenna to be grounded, thereby ensuring the stability and reliability of the operation of the antenna.
  • the feeding point 22 of the radiation source 20 is electrically connected to the oscillation circuit unit 61 of the anti-interference circuit 60.
  • the impedance of this existing antenna can be set as low as 50ohms.
  • the impedance of the existing antenna cannot be further reduced below 50 ohms.
  • the oscillating circuit unit 61 of the present invention is provided to match the low impedance antenna to further reduce the impedance of the antenna.
  • the intensity of the excitation current suitable for the low impedance antenna will be large.
  • the conventional oscillation circuit cannot provide such a large excitation current. Therefore, the oscillating circuit unit 61 of the present invention must have a low impedance to match the low impedance antenna.
  • the anti-interference circuit 60 may be disposed on the reference ground 10.
  • the anti-interference circuit 60 may be printed or covered on the reference ground 10 or may be etched on the reference ground 10. It is worth mentioning that the manner of forming the anti-interference circuit 60 on the reference ground 10 is not limited in the present invention.
  • connection method between them may be a capacitive coupling connection method, so that the frequency mixing detection circuit unit 62 is adapted to the low impedance output of the oscillating circuit unit 61 and the low impedance of the grounded antenna, thereby effectively suppressing the coupling.
  • the differential mode interference and common mode interference received by the antenna are suppressed, thereby improving the anti-interference performance of the antenna.
  • the antenna is used for human motion detection. Due to the Doppler effect, the wavelengths between the received and transmitted electromagnetic waves will differ. Therefore, it is necessary to obtain the differential value used to calculate the relevant mobile data by the frequency mixing detection circuit unit 62 to distinguish the received and transmitted electromagnetic waves. In other words, when the antenna is used for data transmission, the frequency mixing detection circuit unit 62 may be turned off.
  • the anti-interference circuit 60 has a low impedance and a large excitation current to the feed point 22 of the radiation source 20, which matches the low impedance of the antenna.
  • the oscillating circuit unit 61 of the anti-interference circuit 60 includes a three-pole circuit processor 611, an inductor 612, a first resistor 613, a second resistor 614, a first capacitor 615, and a first Two capacitors 616, a third capacitor 617, a fourth capacitor 618, and a fifth capacitor 619.
  • One end of the inductor 612 is electrically connected to a power source VCC 63, and the other end of the inductor 612 is electrically connected to the first connection terminal 6111 of the three-pole circuit processor 611.
  • the first connection terminal 6111 of the three-pole circuit processor 611 is electrically connected to a power source VCC 63 through the inductor.
  • One end portion of the first resistor 613 is electrically connected to the first connection end 6111 of the three-pole circuit processor 611, and the other end portion of the first resistor 613 is electrically connected to the three-pole circuit.
  • One end portion of the first capacitor 615 is electrically connected to the second connection end 6112 of the tripolar circuit processor 611, and the other end portion of the first capacitor 615 is electrically connected to the second capacitor.
  • the other end portion of the second capacitor 616 is electrically connected to a ground point 64 to ground the second connection end 6112.
  • the second connection terminal 6112 of the tripolar circuit processor 611 is grounded.
  • One end portion of the third capacitor 617 is electrically connected to the first connection end 6111 of the three-pole circuit processor 611, and the other end portion of the third capacitor 617 is electrically connected to the three-pole circuit.
  • One end of the second resistor 614 is electrically connected to the third connection terminal 6113 of the three-pole circuit processor 611, and the other end of the second resistor 614 is electrically connected to the ground point 64. .
  • One end of the fourth capacitor 618 is electrically connected to the third connection terminal 6113 of the tripolar circuit processor 611, and the other end of the fourth capacitor 618 is electrically connected to the fifth capacitor.
  • One end of 619. The other end of the fifth capacitor 619 is electrically connected to the feeding point 22 of the radiation source 20. That is, the feeding point 22 of the radiation source 20 is directly and electrically connected to the third connection end 6113 of the three-pole circuit processor 611.
  • the antenna body when the reference ground 10 is grounded (ie, the oscillating circuit unit 61 has a zero reference potential) and the feed point 22 is electrically connected to the oscillating circuit unit 61, the antenna body will be able to Receiving the excitation current to generate the electromagnetic wave signal.
  • the first end of the triode circuit provides the excitation electric signal to the feeding point 22 of the radiation source 20.
  • the current is weak, it will be difficult to match the low impedance of the antenna, making the traditional antenna unable to be excited.
  • the tripolar circuit processor 611 of the present invention may be a MOS tube, wherein the third connection end 6113 of the tripolar circuit processor 611 is the source of the MOS tube. That is, the feed point 22 of the radiation source 20 is directly and electrically connected to the source of the MOS tube. In this way, the anti-interference circuit 60 will be able to provide power for the feed of the radiation source 20.
  • the triode circuit processor 611 may be a triode, and the third connection end 6113 of the triode circuit processor 611 is an emitter of the triode. That is, the feed point 22 of the radiation source 20 is directly electrically connected to the emitter of the triode 20, so that the anti-interference circuit 60 can be the feed point 22 of the radiation source 20.
  • a larger excitation current is provided to reduce the impedance of the antenna.
  • the present invention provides the excitation current to the radiation source 20 through the third connection terminal 6113 of the tripolar circuit processor 611.
  • the third connection terminal 6113 of the tripolar circuit processor 611 is an output terminal of the tripolar circuit processor 611.
  • the current is output from the third connection terminal 6113 of the three-pole circuit processor 611 to reduce the impedance of the oscillating circuit unit 61, thereby providing the feeding point 22 of the radiation source 20 Provide a larger excitation current and reduce the low impedance of the antenna. Accordingly, the present invention is not limited in the configuration of the anti-interference circuit 60.
  • the frequency mixing detection circuit unit 62 includes a first diode 621 and a second diode 622, wherein one end portion of the first diode 621 and one end portion of the second diode 622 are respectively Is connected to a signal output port 65, and the other end of the first diode 621 and the other end of the second diode 622 are connected to the ground point 64, respectively.
  • this connection manner of the anti-interference circuit 60, the radiation source 20 and the reference ground 10 can enable the oscillation circuit unit 61 and the frequency mixing detection circuit unit of the anti-interference circuit 60
  • the DC potential of 62 and the analog circuit 70 do not affect each other, thereby ensuring the stability and reliability of the antenna.
  • the fifth capacitor 619 can capacitively couple the oscillating circuit unit 61, the mixing detection circuit unit 62, and the feed point 22 of the radiation source 20 to each other, so that the mixing detection circuit unit 62 is adapted to the low-impedance output of the oscillating circuit unit 61 and the low-impedance of the antenna to the ground, so that differential-mode interference caused by coupling and common-mode interference on the antenna reception can be effectively suppressed. In other words, the anti-interference performance of the antenna is improved.
  • the inductor 612 is provided between the first connection end 6111 of the tripolar circuit processor 611 and the power source VCC63 to further reduce the anti-oscillation circuit unit. 61 to match the antenna with a low impedance to provide a suitable excitation current.
  • the radiation source connection point 21 of the radiation source 20 is electrically connected to the reference ground connection point 11 of the reference ground 10 so that the radiation of the radiation source 20
  • the source connection point 21 is connected to the ground point 64.
  • an inductive characteristic will be generated between the radiation source connection point 21 and the feed point 22 of the radiation source 20 with a lower impedance, so that the bandwidth of the antenna will be narrowed, thereby preventing its reception Or the generated electromagnetic wave signal is interfered by the adjacent electromagnetic radiation frequency or stray radiation frequency, thereby improving the anti-interference performance of the antenna.
  • the impedance of the antenna body when the impedance of the antenna body is reduced, its corresponding frequency bandwidth will be narrowed, so that the frequency of the electromagnetic wave signal generated by the antenna body will be more concentrated within the frequency bandwidth. As a result, the electromagnetic wave signal generated by the antenna body can be prevented from being interfered by adjacent electromagnetic radiation frequencies or stray radiation frequencies, thereby improving the anti-interference performance of the antenna. It is worth mentioning that when the impedance of the antenna body is reduced, the magnitude of the excitation current will be relatively increased. The impedance of the oscillating circuit unit 61 will be further reduced to provide the excitation current to the antenna body.
  • the radiation source 20 by grounding the radiation source 20 and setting the distance between the radiation source connection point 21 and the feed point 22 of the radiation source 20 to be greater than or equal to 1 / 64 ⁇ , the radiation source
  • the portion between the feed point 22 and the reference ground connection point 20 of 20 will be inductance under a high frequency excitation current (ie, the L0b element of the analog circuit 70). Therefore, when the antenna body is excited by the excitation current to generate the electromagnetic wave signal, especially when the reference ground connection point 11 is provided at the physical midpoint of the radiation source 20, the impedance of the antenna body will be reduced .
  • an inductor may be provided to the antenna body, wherein one end of the inductor is connected to the reference ground connection point 11 and the other end of the inductor is grounded. Therefore, the distance between the radiation source connection point 21 and the feeding point 22 of the radiation source 20 is not limited. When the reference ground 10 is grounded, the ground terminal of the inductor can be grounded by being connected to the reference ground 10.
  • FIG. 9 and FIG. 10 show a second preferred embodiment of the present invention as a variant implementation, wherein the antenna includes a reference ground 10A, two radiation sources 20A, and a microstrip connection portion 60A.
  • the two radiation sources 20A are adjacent to each other and are electrically connected by the microstrip connection portion 60A.
  • the microstrip connection portion 60A is implemented as a microstrip.
  • a radiation gap 30A is formed between each of the radiation sources 20A and the reference ground 10A.
  • the reference ground 10A has a first side 101A and an opposite second side 102A, wherein the radiation sources 20A are both disposed on the first side 101A of the reference ground 10A.
  • each of the radiation sources 20A has at least one radiation source connection point 21A.
  • the reference ground 10A has at least two reference ground connection points 11A.
  • the radiation source connection points 21A of the radiation source 20A are each electrically connected to the reference ground connection point 11A of the reference ground 10A.
  • One of the radiation sources 20A has a feeding point 22A, and the other radiation source 20A does not include any feeding point.
  • the radiation source 20A provided with the feeding point 22A is defined as a main radiation source 201A
  • the other radiation source 20A without a feeding point is defined as a secondary radiation source 202A
  • the primary radiation source 201A and the secondary radiation source 202A are adjacent to each other.
  • the radiation gap 30A is formed between each of the primary radiation source 201A and the secondary radiation source 202A and the reference ground 10A, wherein both ends of the microstrip connection portion 60A are electrically connected to the main A radiation source 201A and the secondary radiation source 202A.
  • the excitation current is connected from the feeding point 22A of the main radiation source 201A. After the excitation current is connected from the feeding point 22A of the primary radiation source 201A, the excitation current can be transmitted to the secondary radiation source 202A through the microstrip connection portion 60A. At this time, the antenna It will be initialized in the polarization direction to generate the radiant energy by stably radiating outward in the radiating slot 30A.
  • the primary radiation source 201A and the secondary radiation source 202A are both electrically connected to the reference ground 10A, when the excitation current is connected from the feed point 22A of the primary radiation source 201A and passes through the feed point 22A After the microstrip connection portion 60A is transmitted to the secondary radiation source 202A, an inductive characteristic will be generated between the radiation source connection point 21 and the feed point 22 to provide a certain impedance, so that the bandwidth of the antenna will be The narrowing prevents the electromagnetic wave signals received or generated by the antenna from being interfered by adjacent electromagnetic radiation frequencies or stray radiation frequencies, so as to improve the anti-interference performance of the antenna.
  • a distance between the radiation source connection point 21A of the main radiation source 201A and the feeding point 22A is greater than or equal to 1 / 64 ⁇ , where ⁇ is a wavelength of an electromagnetic wave signal received or generated by the antenna.
  • the electromagnetic wave signal will cause an inductive characteristic between the radiation source connection point 21A and the feed point 22A of the main radiation source 201A.
  • the feeding point 22A is deviated from the physical midpoint of the main radiation source 201A, the magnitude requirement of the antenna for the excitation current for the electromagnetic wave signal will be greatly reduced. Therefore, when the excitation current is connected from the feeding point 22A of the main radiation source 201A, the antenna is more easily initialized in the polarization direction.
  • the radiation source connection point 21A of the main radiation source 201A is defined as a physical midpoint of the main radiation source 201A. That is, the physical midpoint of the main radiation source 201A is electrically connected to the reference ground 10A to ground the main radiation source 201A. Therefore, a distance is preset between the radiation source connection point 21A and the edge of the main radiation source 201A.
  • the radiation source connection point 21A of the secondary radiation source 202A is defined as a physical midpoint of the secondary radiation source 202A, wherein the physical midpoint of the secondary radiation source 202A is electrically connected to the reference ground 10A, so that a distance is preset between the radiation source connection point 21A of the secondary radiation source 202A and the edge of the secondary radiation source 202A, so that the antenna can pass through the antenna after generating an initial polarization direction
  • the primary radiation source 201A and the secondary radiation source 202A generate the radiation energy uniformly and stably outwardly.
  • the antenna Under the excitation of the electromagnetic wave signal, and by electrically connecting the physical midpoint of the primary radiation source 201A and the physical midpoint of the secondary radiation source 202A to the reference ground 10A, when the excitation current When the feed point 22A of the main radiation source 201A is accessed and the secondary radiation source 202A is accessed from the microstrip connection portion 60A, the antenna will be able to pass through the main radiation source 201A and the The secondary radiation source 202A radiates energy uniformly and stably outwardly.
  • the antenna further includes at least two electrical connection elements 40A.
  • One of the electrical connection elements 40A has two ends, and is electrically connected to the radiation source connection points 21A and 201A of the main radiation source 201A, respectively.
  • a reference ground connection point 11A of the reference ground 10A makes the electrical connection element 40A form an electrical connection medium to electrically connect the main radiation source 201A and the reference ground 10A to each other to connect all The main radiation source 201A is grounded.
  • the two ends of the other electrical connection element 40A are connected to the radiation source connection point 21A of the secondary radiation source 202A and the other reference ground connection point 11A of the reference ground 10A, respectively. Therefore, the electrical connection element 40A forms an electrical connection medium to electrically connect the secondary radiation source 202A and the reference ground 10A to each other, thereby grounding the secondary radiation source 202A.
  • the number of the radiation source connection points 21A of at least one of the primary radiation source 201A and the secondary radiation source 202A may be two or more.
  • the primary radiation source 201A provides two or more radiation source connection points 21A
  • the secondary radiation source 202A provides only one radiation source connection point 21A.
  • the radiation source connection point 21A surrounds the physical midpoint of the main radiation source 201A.
  • the radiation source connection point 21A of the secondary radiation source 202A is a physical midpoint of the secondary radiation source 202A.
  • the number of the radiation source connection points 21A of the primary radiation source 201A is one, and the number of the radiation source connection points 21A of the secondary radiation source 202A is two or more.
  • the radiation source connection point 21A of the main radiation source 201A is a physical midpoint of the main radiation source 201A.
  • the physical midpoint of the secondary radiation source 202A is surrounded by the radiation source connection point 21A of the secondary radiation source 202A.
  • the primary radiation source 201A provides two or more radiation source connection points 21A
  • the secondary radiation source 202A also provides two or more radiation source connection points 21A.
  • the physical midpoint of the main radiation source 201A is surrounded by the radiation source connection point 21A of the main radiation source 201A.
  • the physical midpoint of the secondary radiation source 202A is surrounded by the radiation source connection point 21A of the secondary radiation source 202A.
  • the antenna further includes a shielding cover 50A, wherein the shielding cover 50A is coupled to the second side 102A of the reference ground 10A.
  • FIG. 11 and FIG. 12 show a third preferred embodiment of the present invention as another variant implementation, wherein the antenna includes a reference ground 10B, a four radiation source 20B, and a three microstrip connection portion 60B, where
  • the reference ground 10B has a first side surface 101B and an opposite second side surface 102B.
  • the four radiation sources 20B are respectively formed in pairs, and are disposed adjacent to each other on the first side surface 101B of the reference ground 10B.
  • the microstrip connection portion 60A is implemented as a microstrip.
  • a radiation gap 30B is formed between each of the radiation sources 20B and the reference ground 10A.
  • the first microstrip connection portion 60B has two ends, which are respectively connected to two adjacent radiation sources 20B in pairs.
  • the second microstrip connection portion 60B has two ends, and is connected to two adjacent radiation sources 20B in pairs.
  • the third microstrip connection portion 60B has two ends connected between the first and second microstrip connection portions 60B.
  • the four radiation sources 20B are sequentially defined as a first radiation source 210B, a second radiation source 220B, a third radiation source 230B, and a fourth radiation source 240B, where the first The radiation source 210B, the second radiation source 220B, the third radiation source 230B, and the fourth radiation source 240B are arranged clockwise in this order. Therefore, the first radiation source 210B is adjacent to the second radiation source 220B and the fourth radiation source 240B, respectively.
  • the third radiation source 230B is adjacent to the second radiation source 220B and the fourth radiation source 240B, respectively.
  • the first radiation source 210B is opposite to the third radiation source 230B.
  • the second radiation source 220B is opposite to the fourth radiation source 240B.
  • the radiation gap 30B is formed between the first radiation source 210B and the reference ground 10B.
  • the radiation gap 30B is formed between the second radiation source 220B and the reference ground 10B.
  • the radiation gap 30B is formed between the third radiation source 230B and the reference ground 10B.
  • the radiation gap 30B is formed between the fourth radiation source 240B and the reference ground 10B.
  • the three microstrip connection portions 60B are defined as the first microstrip connection portion 61B, the second microstrip connection portion 62B, and the third microstrip connection portion 63B.
  • Both ends of the first microstrip connection portion 61B are electrically connected to the first radiation source 210B and the second radiation source 220B, respectively, and both ends of the second microstrip connection portion 62B are electrically connected to The third radiation source 230B and the fourth radiation source 240B, and both ends of the third microstrip connection portion 63B are electrically connected to the first microstrip connection portion 61B and the second microstrip connection, respectively.
  • the first radiation source 210B, the second radiation source 220B, the third radiation source 230B, and the fourth radiation source 240B are connected to the reference ground 10B, respectively, where
  • the antenna will be initialized in the polarization direction
  • the antenna can receive or generate electromagnetic wave signals.
  • the first radiation source 210B, the second radiation source 220B, the third radiation source 230B, and the fourth radiation source 240B each have at least one radiation source connection point 21B.
  • the reference ground 10B has at least four reference ground connection points 11B, which are electrically connected to the first radiation source 210B, the second radiation source 220B, the third radiation source 230B, and the fourth radiation source 240B, respectively. .
  • Each of the first radiation source 210B, the second radiation source 220B, the third radiation source 230B, and the fourth radiation source 240B has a feeding point 22B for accessing the excitation current.
  • the radiation source connection point 21B of any one of the first radiation source 210B, the second radiation source 220B, the third radiation source 230B, and the fourth radiation source 240B and the feed is greater than or equal to 1 / 64 ⁇ , where ⁇ is the wavelength of the electromagnetic wave signal received or generated by the antenna. Under the excitation of an electromagnetic wave signal, the electromagnetic wave signal will cause any one of the first radiation source 210B, the second radiation source 220B, the third radiation source 230B, and the fourth radiation source 240B.
  • An inductive characteristic is generated between the radiation source connection point 21B and the feeding point 22B to provide a certain impedance, so that the antenna is initialized in a polarization direction to stably generate radiant energy outwardly.
  • an inductive characteristic will be generated between the radiation source connection point 21B and the feed point 22B and between the microstrip connection portion 60A, so that the impedance of the antenna is reduced, and thus the bandwidth of the antenna It is narrowed to prevent electromagnetic wave signals received or generated by the antenna from being interfered by adjacent electromagnetic radiation frequencies or stray radiation frequencies, thereby improving the anti-interference performance of the antenna.
  • the feeding point 22B of the corresponding radiation source 20B is deviated from its physical midpoint, so as to reduce the size of the excitation current required by the antenna.
  • the feed point 22B, the feed point 22B of the second radiation source 220B, the feed point 22B of the third radiation source 230B, and the feed point from the fourth radiation source 240B When 22B is accessed, the antenna will be more easily initialized in the polarization direction.
  • the feeding point 22B of the first radiation source 210B is a connection point connected to the first microstrip connection portion 61B.
  • the feeding point 22B of the second radiation source 220B is a connection point connected to the first microstrip connection portion 61B.
  • the feeding point 22B of the third radiation source 230B is a connection point connected to the second microstrip connection portion 62B.
  • the feeding point 22B of the fourth radiation source 240B is a connection point connected to the second microstrip connection portion 62B.
  • the antenna has an antenna feed point 70B, which is electrically connected to the third microstrip connection portion 63B.
  • the first microstrip connection portion 61B and the second microstrip connection portion 62B pass through the third microstrip connection portion 63B to the first radiation source 210B, the second radiation source 220B, and the Each of the feed points 22B of the third radiation source 230B and the fourth radiation source 240B, so that the bandwidth of the antenna will be narrowed, thereby preventing the electromagnetic wave signals received or generated by the antenna from being adjacent to the electromagnetic radiation frequency or noise. Scattered radiation frequency interference to improve the anti-interference performance of the antenna.
  • the radiation source connection points 21B of the first radiation source 210B when the number of the radiation source connection points 21B of the first radiation source 210B is one, the radiation source connection points 21B will be defined as the physical midpoint of the first radiation source 210B; when the When the number of the radiation source connection points 21B of the first radiation source 210B is two or more, the radiation source connection points 21B will surround the physical midpoint of the first radiation source 210B.
  • the radiation source connection points 21B of the second radiation source 220B is one, the radiation source connection points 21B will be defined as the physical midpoint of the second radiation source 220B; When the number of the radiation source connection points 21B of the radiation source 220B is two or more, the radiation source connection points 21B will surround the physical midpoint of the second radiation source 220B.
  • the radiation source connection point 21B is a physical midpoint of the third radiation source 230B; when the third radiation source 230B When the number of the radiation source connection points 21B is more than two, the radiation source connection points 21B surround the physical midpoint of the third radiation source 230B.
  • the radiation source connection point 21B of the fourth radiation source 240B is one, the radiation source connection point 21B is a physical midpoint of the fourth radiation source 240B; when the fourth radiation source 240B is When the number of the radiation source connection points 21B is more than two, the radiation source connection points 21B surround the physical midpoint of the fourth radiation source 240B.
  • the antenna further includes at least four electrical connection elements 40B, wherein both ends of at least one of the electrical connection elements 40B are electrically connected to the radiation source connection points 21B of the first radiation source 210B, respectively. And the reference ground connection point 11B of the reference ground 10B to electrically connect the first radiation source 210B to the reference ground 10B. Both ends of at least one of the electrical connection elements 40B are electrically connected to the radiation source connection point 21B of the second radiation source 220B and the reference ground connection point 11B of the reference ground 10B, respectively, to connect the first The two radiation sources 220B are electrically connected to the reference ground 10B.
  • Both ends of at least one of the electrical connection elements 40B are electrically connected to the radiation source connection point 21B of the third radiation source 230B and the reference ground connection point 11B of the reference ground 10B, respectively, to connect the first
  • the three radiation sources 230B are electrically connected to the reference ground 10B.
  • Both ends of at least one of the electrical connection elements 40B are electrically connected to the radiation source connection point 21B of the fourth radiation source 240B and the reference ground connection point 11B of the reference ground 10B, respectively, to connect the first
  • the four radiation sources 240B are electrically connected to the reference ground 10B.
  • the antenna further includes a shielding cover 50B, wherein the shielding cover 50B is coupled to the second side 102B of the reference ground 10B.
  • first, second, third, and fourth are only used to describe the naming of different components (or elements) of the present invention, and they should not distinguish between different components, elements, and structures of the present invention.
  • the order or number of elements is not limited.
  • the first radiation source 210B, the second radiation source 220B, the third radiation source 230B, and the The fourth radiation source 240B is only used to describe different positions of the radiation sources 20B at different positions in the present invention, and it does not refer to the order or number of the radiation sources 20B.
  • FIG. 13 and FIG. 14 show a fourth preferred embodiment as a modified embodiment of the present invention, wherein the antenna includes a reference ground 10C and at least one radiation source 20C, and the radiation sources 20C are disposed adjacent to each other.
  • the reference ground 10C defines a radiation gap 30C between the radiation source 20C and the reference ground 10C. Accordingly, at least one radiation source 20C is electrically connected to the reference ground 10C.
  • the reference ground 10C has a first side 101C and an opposite second side 102C.
  • the radiation source 20C is disposed on the first side 101C of the reference ground 10C.
  • the radiation source 20C has a radiation source connection point 21C and a feed point 22C, wherein the radiation source connection point 21C and the feed point 22C coincide.
  • the reference ground 10C has at least one reference ground connection point 11C.
  • the antenna further includes at least one electrical connection element 40B.
  • the electrical connection element 40B is an inductor, and the electrical connection element 40C has two ends, and the radiation is electrically connected to the radiation source 20C.
  • the source connection point 21C and the reference ground connection point 11C of the reference ground 10C are used to electrically connect the radiation source 20C to the reference ground 10C through the electrical connection element 40C.
  • the electrical connection element 40C may be, but is not limited to, a curved connection type inductor or a screw connection type inductor.
  • the antenna Impedance Since the radiation source 20C is electrically connected to the reference ground 10C by the electrical connection element 40C, after the excitation current is connected by the feeding point 22C of the radiation source 20C, the antenna Impedance, so that the bandwidth of the antenna will be narrowed to prevent electromagnetic wave signals received or received by the antenna from being interfered by electromagnetic radiation frequencies or stray radiation frequencies of adjacent frequency bands, thereby improving the anti-interference performance of the antenna.
  • the radiation source 20C and the reference ground 10C are electrically connected to each other through the electrical connection element 40C, wherein a perforation is formed in the reference ground 10C, and a metal layer is formed on a wall of the perforation, so that A metalized through hole is formed as the electrical connection element 40D to electrically connect the radiation source 20C to the reference ground 10C, as shown in FIG. 15. It is worth mentioning that the feeding point of the antenna is electrically connected to the oscillation circuit through the electrical connection element 40D.
  • the present invention further includes a method for manufacturing an antenna, which includes the following steps:
  • the radiation gap 30 is formed between a radiation source 20 and a reference ground 10, wherein the radiation sources 20 are disposed adjacent to the first side 101 of the reference ground 10.
  • the radiation source 20 is grounded to form the antenna.
  • the radiation source 20 is electrically connected to the reference ground 10 to ground the radiation source 20.
  • step (b) may also be preceded by the step (a), in other words, the radiation source 20 and the reference ground 10 are electrically connected first, and then the radiation is maintained adjacently
  • the source 20 originates from the first side 101 of the reference ground 10.
  • a solid medium is set on the first side 101 of the reference ground 10; then, the radiation source 20 is set on the solid medium so that the radiation source 20 is adjacent to the ground It is maintained at the reference ground 10 to form the radiation gap 30 between the radiation source 20 and the reference ground 10.
  • the solid medium is first set in the radiation source 20, and then the medium is disposed on the first side 101 of the reference ground 10 to keep the radiation source 20 adjacent to the reference ground 10 adjacently.
  • the radiation gap 30 is formed between the radiation source 20 and the reference ground 10.
  • the invention further provides an anti-jamming method for the antenna, comprising the steps of: grounding the radiation source 20 to reduce the internal impedance of the antenna; and accessing the feed point 22 of the radiation source 20 to the antenna
  • the excitation current narrows the frequency bandwidth of the antenna, thereby greatly reducing any interference of the electromagnetic wave signal received or generated by the antenna of the present invention from electromagnetic radiation frequencies or stray radiation frequencies of nearby adjacent frequency bands.

Abstract

本发明提供一种天线,包括一参考地和至少一辐射源,其中所述辐射源被相邻地设置于所述参考地,以在所述辐射源和所述参考地之间形成一辐射缝隙,其中所述辐射源被电气连接于所述参考地以使所述辐射源接地,从而使所述天线的频宽变窄。当一电磁激励信号自所述辐射源的一馈电点被接入时,所述天线的频宽变窄可以防止所述天线接收或产生的电磁波信号受到附近的相邻频段的电磁辐射频率或杂散辐射频率干扰。

Description

具有抗干扰设置的天线及其制造方法 技术领域
本发明涉及一天线,特别涉及具有抗干扰设置的一天线,其中该抗干扰方法防止该天线接收或产生的电磁波信号被相邻电磁辐射频率或杂散辐射频率干扰,从而能提高该天线的抗干扰性能。
背景技术
ISM(Industrial Scientific Medical)Bands是由ITU-R(ITU Radiocommunication Sector,国际通信联盟无线电通信局)定义的供开放给诸如工业、科学和医学等机构使用的无需授权许可的频段,其在使用这些频段时需要遵守一定的发射功率(一般发射功率低于1W)且不对其他频段造成干扰。目前,在ITU-R开放的这些频段中被应用于微波探测的频段主要设在2.4Ghz、5.8Ghz、10.525Ghz、24.125Gh等频段,近年来有许多新的频段开始被频繁地应用于微波探测,例如5G技术的应用导致在既有的用于微波探测的频段外的新频段被应用在微波探测。众所周知地,当使用两个或更多靠近的频段时,会产生相互干扰。以上述的微波探测为例,当5.8GHz的频段被用于人体或物体运动探测时,该5.8GHz的频段将不可避免地会被5G技术的应用所干扰。结果5G技术的应用产生的干扰将导致得自5.8GHz频段的探测结果不准确。随着近年来5G技术的快速成熟,5G的系统必然会被逐渐的开放和大规模的应用。可以预见的是,5G技术的大规模的应用必然会形成以5G网络为基础的高速数据网络通道,并且在未来还会不断地扩展到更多频段的应用。换言之,用于微波探测的频段被5G技术的应用所干扰的可能性将大幅增加。因此,提高用于微波探测的天线的抗干扰性能刻不容缓。对此过去提高用于微波探测的天线的抗干扰性的方式为抑制方式,通过屏蔽外来无线信号、信号滤波、软件算法处理等方法去抑制前述干扰。然而,这些传统方式仅能为有限的频段提供有限的抗干扰性能。因此,目前需要有一个能提高对于不同频段抗干扰性能的天线,也就是提供本揭露主要指涉的这种天线。
发明内容
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述抗干 扰设置提高了该天线的抗干扰性能。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述抗干扰设置有效地防止该天线接收或产生的电磁波信号被相邻电磁辐射频率或杂散辐射频率干扰。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述天线的阻抗被降低,以使所述天线的频宽变窄,从而避免所述天线接收或产生的电磁波信号被相邻电磁辐射频率或杂散辐射频率干扰。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述天线的阻抗能够被降低,在降低天线工作的频点阻抗的同时,对于非工作频点外的频率范围、呈现极低的甚至接近零欧的阻抗,以增强所述天线于其辐射频段的主辐射波的辐射能量,从而降低所述天线的谐波辐射地降低所述天线的杂散辐射。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述天线具有一抗干扰电路,其中所述抗干扰电路具有低阻抗以匹配所述低阻抗天线,以便使所述天线的频宽变窄,从而避免本发明的所述天线接收或产生的电磁波信号被任何相邻电磁辐射频率干扰。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述辐射源被接地,以降低所述天线的阻抗。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述辐射源被电气连接于所述参考地,以使所述辐射源被接地。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述抗干扰电路提供较大的激励电流予所述辐射源,以保证所述天线的稳定工作。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述辐射源具有至少一辐射源连接点,被电气连接于所述参考地。所述辐射源及其所述辐射源连接点的边缘之间具有预设距离,从而在微波激励电信号的激励下,产生电感的电气特性。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中\所述辐射源连接点与所述馈电点之间的距离大于或者等于1/64λ,从而在微波激励电信号的作用下,于所述馈电点与所述辐射源连接点之间产生电感的电气特性。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中藉由将所述辐射源的所述辐射源连接点形成于其物理中点,在共振状态下降低所述天线的 阻抗,从而提高所述天线的抗干扰性能。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述电气连接元件具有两端,分别被电气连接于所述辐射源和所述参考地,以在共振状态下降低所述天线的内阻抗,从而提高所述天线的抗干扰性能。
本发明的一个优势在于提供具有抗干扰设置及方法的一天线,其中所述辐射源连接点与所述馈电点重合,从而电气连接所述馈电点与所述参考地,以在共振状态下降低所述天线的内阻抗,从而提高所述天线的抗干扰性能。
本发明的其他优势和特征将显示于后续描述中,或藉由权利要求中特别指出的特定做法或组合体现。
依据本发明,本发明藉由提供一天线实现上述和其他目的及优势,所述天线包括:
一参考地;和
至少一辐射源,其中所述辐射源被相邻地设置于所述参考地,以在所述辐射源和所述参考地之间定义一辐射缝隙,其中所述辐射源被电气连接于所述参考地以将所述辐射源接地,从而使所述天线的频宽变窄。
依本发明的另一个方面,本发明还提供一天线的制造方法,其中所述天线包括至少一辐射源和一参考地,其中所述制造方法包括如下步骤:
(a)相邻地设置所述辐射源于所述参考地,以形成一辐射缝隙于所述辐射源和所述参考地之间;和
(b)将所述辐射源电气连接于所述参考地,以将所述辐射源被接地,从而使所述天线的频宽变窄。
依本发明的另一个方面,本发明提供一天线提高抗干扰性能的方法,其中所述天线包括至少一辐射源和一参考地,其中所述方法包括如下步骤:
(1)形成一辐射缝隙于所述辐射源和所述参考地之间。
(2)透过电气连接所述辐射源至所述参考地将所述辐射源接地,以降低所述天线的内阻抗,从而当一电磁激励信号自所述辐射源的一馈电点被接入时,所述天线的频宽变窄将防止所述天线接收或产生的电磁波信号受到附近的相邻频段的电磁辐射频率或杂散辐射频率干扰。
通过对随后的描述和附图的理解,本发明进一步的目的和优势将得以充分体现。
本发明的这些和其它目的、特点和优势,通过下述的详细说明,附图和权利要求得以充分体现。
附图说明
图1是依本发明的一第一较佳实施例的具有抗干扰设置的一天线的立体示意图。
图2是依本发明的上述第一较佳实施例的所述天线的剖视图。
图3显示依本发明的上述第一较佳实施例的所述天线的一第一变形实施方式。
图4显示依本发明的上述第一较佳实施例的所述天线的一第二变形实施方式。
图5是依本发明的上述第一较佳实施例的第二变形实施方式的所述天线的剖视图。
图6A显示依本发明的上述第一较佳实施例的所述天线的一第三变形实施方式。
图7A显示依本发明的上述第一较佳实施例的所述天线的一第四变形实施方式。
图7B是依本发明的上述第一较佳实施例的第四变形实施方式的所述天线的剖视图。
图8是依本发明的上述第一较佳实施例的所述天线的一抗干扰电路图。
图9是依本发明的一第二较佳实施例的具有抗干扰设置的一天线的立体示意图。
图10是依本发明的上述第二较佳实施例的所述天线的剖视图。
图11是依本发明的一第三较佳实施例的具有抗干扰设置的一天线的立体示意图。
图12是依本发明的上述第三较佳实施例的所述天线的剖视图。
图13是依本发明的一第四较佳实施例的具有抗干扰设置的一天线的立体示意图。
图14是依本发明的上述第四较佳实施例的所述天线的剖视图。
图15显示依本发明的上述第四较佳实施例的一变形实施方式的所述天线。
具体实施方式
以下描述用于揭露本发明以使本领域技术人员能够实现本发明。以下描述中的优选实施例只作为举例,本领域技术人员可以想到其他显而易见的变型。在以下描述中界定的本发明的基本原理可以应用于其他实施方案、变形方案、改进方案、等同方案以及没有背离本发明的精神和范围的其他技术方案。
本领域技术人员应理解的是,在本发明的揭露中,术语“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系是基于附图所示的方位或位置关系,其仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此上述术语不能理解为对本发明的限制。
可以理解的是,术语“一”应理解为“至少一”或“一个或多个”,即在一个实施例中,一个元件的数量可以为一个,而在另外的实施例中,该元件的数量可以为多个,术语“一”不能理解为对数量的限制。因此,上述用词不应作为本发明的元件在实际数字上的限制。
参考本发明的说明书附图之附图1和图2,依本发明的一较佳实施例的一天线将被阐述,其中所述天线包括一参考地10和至少一辐射源20,其中所述辐射源20被相邻地设置于所述参考地10的一第一侧面101,从而形成一天线主体。相应地,所述天线进一步包括一振荡电路,电气耦合于所述天线主体。
值得一提的是,本发明的所述辐射源20被与所述参考地10相邻地分开,即所述辐射源20与所述参考地10之间没有直接接触。尤其在所述参考地10和所述辐射源20之间预留一间距,作为两者之间的一辐射缝隙30。
此外,在所述参考地10和所述辐射源20之间形成的所述辐射缝隙30是指所述辐射源20的表面与所述参考地10的表面之间的表面差。例如,在附图1和图2示出的实施例中,在所述辐射源20和所述参考地10之间形成的所述辐射缝隙30是所述参考地10的所述第一侧面101与所述辐射源20的外表面之间的一高度差。再例如,在附图7A和图7B示出的实施例中,在所述辐射源20和所述参考地10之间形成的所述辐射缝隙30是所述辐射源20的周面与所述参考地10的所述第一侧面101之间的一间距。由此可见,在所述辐射源20和所述参考地10之间的所述辐射缝隙30的形成不限于其仅有的两种指定表面。如附图1和图 2所示,所述辐射源20和所述参考地10被电气连接,其中所述辐射源20被接地。值得一提的是,在传统天线的配置中所述辐射源并不接地,也不被电气连接于所述参考地。藉由将所述辐射源20接地,能够大幅降低本发明的所述天线的阻抗,以使所述天线的频宽变窄,从而有利于避免相邻频段的电磁辐射频率或杂散辐射频率干扰本发明的所述天线接收或产生的电磁波信号。
参考附图1和图2,所述辐射源20具有至少一辐射源连接点21和一馈电点22。所述参考地10进一步具有至少一参考地连接点11。所述辐射源20的所述辐射源连接点21被电气连接至所述参考地10的所述参考地连接点11,从而使得所述辐射源20被接地。此外,所述辐射源20的所述馈电点22被设置以被连接到一激励电流。相应地,所述振荡电路被连接至所述天线主体的所述馈电点22以产生所述电磁波信号(微波激励电信号)一旦所述激励电流被所述辐射源20的所述馈电点22接入,所述天线将于一极化方向初始化,而所述辐射源20将向外放射地产生辐射能量。如上述地,所述辐射源20被电气连接至所述参考地10以将所述辐射源20接地。当所述激励电流自所述辐射源20的所述馈电点22被接入后,所述辐射源的所述辐射源连接点21和所述馈电点22之间由于两者之间的电感特性将产生一定的阻抗,从而将使得所述天线被激励并在一极化方向初始化以于所述辐射源20向外放射地产生辐射能量。同时,所述辐射源20的所述辐射源连接点21和所述馈电点22之间因其电感特性将具有较低的阻抗,以使得所述天线的频宽变窄,从而本发明的所述天线可以通过使频宽变窄的方式大幅降低所述天线接收或产生的电磁波信号受相邻频段的电磁辐射频率或杂散辐射频率影响导致的任何干扰。值得一提的是,所述辐射源20的所述馈电点22必将偏离其物理中点,从而容易被激励电流激励。此外,为了激励所述辐射源20,在所述辐射源20和所述参考地10之间必有一阻抗。即使所述辐射源20的所述辐射源连接点21被接地,由于在高频率激励信号下所述辐射源连接点21和所述馈电点22之间的电感特性,两者之间仍将产生阻抗。值得一提的是,所述阻抗即使产生了,这样的阻抗也相对低。
值得一提的是,所述天线的阻抗能够被降低,以在其辐射频段内增强其主辐射波的辐射能量,从而降低所述天线的谐波辐射。相应地,所述天线不仅在其辐射频段产生该电磁波,也会在其辐射频段的倍频产生谐波,也就是杂散辐射。
优选地,所述辐射源20的所述辐射源连接点21与所述馈电点22之间的距 离大于或者等于1/64λ,其中λ是所述天线接收或产生的电磁波信号的波长,以在微波激励电信号的激励作用下,所述电磁波信号将在所述辐射源20的所述辐射源连接点21与所述馈电点22之间产生电感特性。当所述辐射源20的所述馈电点22被偏离所述辐射源20的物理中点时,所述天线对用于所述电磁波信号的激励电流的大小要求将大幅降低。从而当所述激励电流自所述辐射源20的所述馈电点22被接入时,所述天线更容易被在极化方向初始化。
如图1和图2所示,所述辐射源20的所述辐射源连接点21优选地被定义为所述辐射源20的物理中点。换句话说,所述辐射源20的物理中点被电气连接于所述辐射源20的所述参考地10,从而藉由在其物理中点形成所述辐射源20的所述辐射源连接点21使得所述天线在产生初始的极化方向后能够通过所述辐射源20均匀且稳定地向外放射地产生辐射能量。本领域技术人员应当理解的是,所述辐射源20的边缘与所述辐射源20的所述馈电点22在激励电流的激励作用下产生电感,所述辐射源20与所述参考地10之间产生带有分布电容的所述天线的谐振回路,以用于接收或产生电磁波信号。
如图1和图2所示,其中仅有一所述辐射源20的辐射源连接点21。在图3所示的另一实施例当中有两个或更多所述辐射源20的辐射源连接点21,其中所述辐射源20的这些所述辐射源连接点21环绕着所述辐射源20的物理中点。此外,所述辐射源20的这些所述辐射源连接点21与所述辐射源20的边缘之间预设有一距离,这样,在所述电磁波信号的激励作用下,所述辐射源20的所述馈电点22与所述辐射源20的所述辐射源连接点21之间将产生电感特性。然后,当激励电流自所述辐射源20的所述馈电点22被接入所述辐射源20时,所述天线的阻抗将被降低,从而使所述天线的频宽变窄。另外,任一所述辐射源连接点21与所述馈电点22之间的距离皆大于或者等于1/64λ,如图3所示。
如图1和图2所示,所述天线进一步包括一电气连接元件40,其具有两端,分别被电气连接于所述辐射源20的所述辐射源连接点21和所述参考地10的所述参考地连接点11,以藉由所述电气连接元件40形成一电气连接媒介以将所述辐射源20和所述参考地10相互电气连接,从而使得所述辐射源20被接地。
如图1和图2所示,优选地,所述辐射源20的所述辐射源连接点21正对所述参考地10的所述参考地连接点11,也就是说,所述辐射源20的所述辐射源连接点21和所述参考地10的所述参考地连接点11之间的延伸方向垂直于所述 参考地10的第一侧面。
值得一提的是,所述电气连接元件40被优选地耦合于所述辐射源20和所述参考地10之间,以使所述电气连接元件40的两端能分别被电气连接于所述辐射源20的所述辐射源连接点21和所述参考地10的所述参考地连接点11,从而将所述辐射源20电气连接于所述参考地10。
可以理解的是,所述辐射源20与所述参考地10之间的电气连接应理解为在高频的激励电流下,所述辐射源20与所述参考地10之间呈现有阻抗的电气连接状态。本领域技术人员应当理解,在高频的激励电流下,电容元件、导线本身、电阻元件以及电感元件均能够呈现具有一定阻抗的电气连通状态,如此则所述电气连接件40可被设置为由导线、电容元件、电阻元件以及电感元件中的一种或几种构成,而能够于高频的激励电流下,形成所述辐射源20与所述参考地10之间呈现有阻抗的电气连接并发射电磁波。
以一所述较佳实施例为例,首先将所述辐射源20邻近地保持于所述参考地10的所述第一侧面101,以在所述辐射源20和所述参考地10之间形成所述辐射缝隙30,然后自所述参考地10的一相对的第二侧面102开设一参考地穿孔12,其中所述参考地穿孔12被延伸对应于所述辐射源20。可以理解的是,所述辐射源20和所述参考地10之间的所述辐射缝隙30是一实体介质,如图1和图2所示。换句话说在所述参考地穿孔12被形成的同时,一缝隙穿孔31也被开设于所述辐射缝隙30当中,其中所述参考地10的所述参考地穿孔12连通并延伸通过所述辐射缝隙30的所述缝隙穿孔31,并且所述参考地10的所述参考地穿孔12和所述辐射缝隙30的所述缝隙穿孔31对应于所述辐射源20的所述辐射源连接点21。接着,一成型材料被依次自所述参考地10的所述参考地穿孔12和所述辐射缝隙30的所述缝隙穿孔31延伸,以便连接所述成型材料于所述辐射源20的所述辐射源连接点21及连接所述成型材料于所述参考地10,从而使所述成型材料形成所述电气连接元件40以将所述辐射源20和所述参考地10相互电气连接。并且所述成型材料与所述参考地10之间的连接点成为了所述所述参考地的所述参考地连接点11。
值得一提的是,根据所述较佳实施例,所述成型材料可以是但不限于金线、银线或其他导线,其中当所述成型材料被实施为所述连接线时,所述连接线能够依次自所述参考地10的所述参考地穿孔12和所述辐射缝隙30的所述缝隙穿孔 31延伸至所述辐射源20的所述辐射源连接点21,及连接至所述参考地10,从而形成将所述辐射源20和所述参考地10相互电气连接的所述电气连接元件40。或者,将所述连接线的一个端部先连接于所述辐射源20的所述辐射源连接点21,然后将所述辐射源20保持在靠近所述参考地10的所述第一侧面101,并使所述连接线穿入所述参考地10的被预设的所述参考地穿孔12以连接于所述参考地10,从而形成将所述辐射源20和所述参考地10彼此电气连接的所述电气连接元件40。根据一实施例,所述成型材料也可以是但不限于流体,其中当所述成型材料被填充于所述参考地10的所述参考地穿孔12和所述辐射缝隙30的所述缝隙穿孔31后,当所述成型材料被固化后,所述成型材料将形成将所述辐射源20和所述参考地10彼此电气连接的所述电气连接元件40。
如图1和图2所示,所述天线进一步包括一屏蔽罩50,其中所述屏蔽罩50被耦合于所述参考地10的所述第二侧面102。相应地,所述天线的所述辐射源20的形状不受限制。例如,所述辐射源20的形状可以被设置为四边形,如图1-3所示。其也可以被设置为正方形。同样地,所述辐射源20的形状可以被设置为圆形或椭圆形,如图4和图5所示。也就是说,所述辐射源20的延伸方向和所述参考地10的延伸方向一致,即所述辐射源20与所述参考地10平行,从而形成一平板天线。在其他实施例中,如图7A和图7B所示,所述辐射源20的延伸方向与所述参考地10的延伸方向相互垂直,即所述辐射源20垂直于所述参考地10,从而形成一柱状天线。如图7A和7B所示,所述天线进一步包括至少一附加电感100,其中所述附加电感100的一个端部被电气连接于所述辐射源20的所述辐射源连接点21,而所述附加电感100的另一端部则被接地。所述辐射源连接点21形成于所述辐射源20的所述连接端2001,从而所述附加电感100的一个端部自所述辐射源20的所述连接端2001被连接于所述辐射源连接点21,所述附加电感100的另一个端部被接地。
如图8所示,所述天线进一步包括一抗干扰电路60,被电气连接于所述辐射源20的所述馈电点22,以允许激励电流经所述抗干扰电路60至所述辐射源20的所述馈电点22。所述抗干扰电路60具有低阻抗以提供所述激励电流以匹配所述天线的低阻抗,从而使所述天线能产生所述初始极化方向。由于所述天线的阻抗将被降低且所述天线的频宽将被变窄,从而避免所述天线接收或产生的电磁波信号受附近的相邻频段的电磁辐射频率或杂散辐射频率影响造成的一切干扰都 将被大幅降低。
如图8所示,所述天线进一步包括一模拟电路70,被电气连接于所述辐射源20和所述参考地10以便受到所述激励电流的激励。如图8所示,所述模拟电路70具有一第一模拟点71和一第二模拟点72,其中所述第一模拟点71模拟所述辐射源20的所述辐射源连接点21,所述第二模拟点72模拟所述辐射源20的所述馈电点22。值得一提的是,所述天线主体受到来自于所述振荡电路的所述激励电流激励,其表现如同被激动的所述模拟电路70。
具体地,所述抗干扰电路60包括一振荡电路单元61(即所述振荡电路)和被连接于所述振荡电路单元61的一混频检波电路单元62。相应地,所述模拟电路70的所述第二模拟点72被电气连接于所述抗干扰电路60的所述振荡电路单元61,其中所述混频检波电路单元62被设置及保持在所述振荡电路单元61和所述辐射源20之间。所述混频检波电路单元62适配所述振荡电路单元61的低阻抗输出和被接地的所述天线的低阻抗,从而保证所述天线的运作的稳定性和可靠性。换句话说,所述辐射源20的所述馈电点22被电气连接于所述抗干扰电路60的所述振荡电路单元61。
相应地,一旦所述天线的阻抗被降低,其频宽将会变窄以提高其抗干扰性能。该现有天线的阻抗可被设置低至50ohms。然而,囿于现有的振荡电路,现有天线的阻抗无法被进一步降到低于50ohms。相对地,本发明的所述振荡电路单元61被设置以匹配所述低阻抗天线以进一步降低所述天线的阻抗。换言之,适合所述低阻抗天线的所述激励电流的强度将较大。然而在所述天线的发射功率调节下,传统振荡电路无法提供如此大的激励电流。因此本发明的所述振荡电路单元61必有一低阻抗以匹配所述低阻抗天线。
相应地,所述抗干扰电路60可以被设置在所述参考地10,例如所述抗干扰电路60可以被印刷或被覆于所述参考地10,或者可被蚀刻于所述参考地10。值得一提的是,将所述抗干扰电路60形成于所述参考地10的方式在本发明中不受限制。
优选地,所述抗干扰电路60的所述振荡电路单元61和所述混频检波电路单元62之间,以及所述混频检波电路单元62与所述辐射源20的所述馈电点22之间的连接方式可以是电容耦合连接方式,如此以便所述混频检波电路单元62适配所述振荡电路单元61的低阻抗输出和被接地的所述天线的低阻抗,从而有效 地抑制耦合带来的差模干扰和抑制所述天线接收到的共模干扰,从而提高所述天线的抗干扰性能。值得一提的是,所述天线被用于人体运动探测。由于多普勒效应,该接收与传送的电磁波之间的波长将会有差异。因此藉由混频检波电路单元62获取用于计算相关移动数据的微分值以区分接收与传送的电磁波是必要的。换言之,当所述天线被用于数据传输时,所述混频检波电路单元62可以被关闭。
参考附图8,所述抗干扰电路60对所述辐射源20的所述馈电点22具有低阻抗和的较大的激励电流,其匹配所述天线的低阻抗。具体地说,所述抗干扰电路60的所述振荡电路单元61包括一个三极电路处理器611、一个电感612、一个第一电阻613、一个第二电阻614、一个第一电容615、一个第二电容616、一个第三电容617、一个第四电容618以及一个第五电容619。所述电感612的一端部被电气连接于一电源VCC 63,而所述电感612的另一端部被电气连接于所述三极电路处理器611的所述第一连接端6111。换句话说,所述三极电路处理器611的所述第一连接端6111透过所述电感被电气连接于一电源VCC 63。所述第一电阻613的一端部被电气连接于所述三极电路处理器611的所述第一连接端6111,而所述第一电阻613的另一端部被电气连接于所述三极电路处理器611的所述第二连接端6112。所述第一电容615的一端部被电气连接于所述三极电路处理器611的所述第二连接端6112,而所述第一电容615的另一端部被电气连接于所述第二电容616的一端部。所述第二电容616的另一端部被电气连接于一接地点64,从而将所述第二连接端6112接地。换句话说,三极电路处理器611的所述第二连接端6112被接地。所述第三电容617的一端部被电气连接于所述三极电路处理器611的所述第一连接端6111,而所述第三电容617的另一端部被电气连接于所述三极电路处理器611的所述第三连接端6113。所述第二电阻614的一端部被电气连接于所述三极电路处理器611的所述第三连接端6113,而所述第二电阻614的另一端部被电气连接于所述接地点64。所述第四电容618的一端部被电气连接于所述三极电路处理器611的所述第三连接端6113,而所述第四电容618的另一端部被电气连接于所述第五电容619的一端部。所述第五电容619的另一端部被电气连接于所述辐射源20的所述馈电点22。也就是说,所述辐射源20的所述馈电点22被直接电气连接于所述三极电路处理器611的所述第三连接端6113。相应地,当所述参考地10被接地(即所述振荡电路单元61具有零参考电位),且所述馈电点22被电气连接于所述振荡电路单元61时,所 述天线主体将能接受所述激励电流以产生所述电磁波信号。
相应地,相较于传统振荡电路,所述三极管电路的所述第一端提供该激励电信号至所述辐射源20的所述馈电点22。当该电流微弱时,将难以匹配所述天线的低阻抗,使得该传统天线无法被激励。值得一提的是,本发明的所述三极电路处理器611可以是一个MOS管,其中所述三极电路处理器611的所述第三连接端6113是所述MOS管的源极。也就是说,所述辐射源20的所述馈电点22被直接电气连接于所述MOS管的源极,这样,所述抗干扰电路60将能为所述辐射源20的所述馈电点22提供较大的激励电流及降低所述天线的低阻抗。根据另一实施例,所述三极电路处理器611可以是一个三极管,其中所述三极电路处理器611的所述第三连接端6113是所述三极管的发射极。也就是说,所述辐射源20的所述馈电点22被直接电气连接于所述三极管20的发射极,从而所述抗干扰电路60能够为所述辐射源20的所述馈电点22提供一较大的激励电流以降低所述天线的阻抗。
应当理解本发明通过以所述三极电路处理器611的所述第三连接端6113为所述辐射源20提供所述激励电流。所述三极电路处理器611的所述第三连接端6113为所述三极电路处理器611的输出端。换句话说,电流被从所述三极电路处理器611的所述第三连接端6113输出,以降低所述振荡电路单元61的阻抗,从而为所述辐射源20的所述馈电点22提供较大的激励电流并降低所述天线的低阻抗。相应地,本发明在所述抗干扰电路60的配置方面不受限制。
所述混频检波电路单元62包括一第一二极管621和一第二二极管622,其中所述第一二极管621的一端部和所述第二二极管622的一端部分别被连接于一信号输出端口65,而所述第一二极管621的另一端部和所述第二二极管622的另一端部分别被连接于所述接地点64。
相应地,所述抗干扰电路60、所述辐射源20与所述参考地10的这种连接方式,能够使所述抗干扰电路60的所述振荡电路单元61和所述混频检波电路单元62与所述模拟电路70的直流电位互不影响,从而保证所述天线的稳定性和可靠性。如此,藉由设置所述抗干扰电路60以在所述振荡电路单元61的所述第三电容617和所述第四电路618与所述辐射源20的所述馈电点22之间设置所述第五电容619,能够使所述振荡电路单元61、所述混频检波电路单元62和所述辐射源20的所述馈电点22彼此电容耦合,如此以使得所述混频检波电路单元62适 配所述振荡电路单元61的低阻抗输出和所述天线相对地极的低阻抗,从而能够有效地抑制耦合带来的差模干扰和抑制所述天线接收上的共模干扰。换句话说,提高了所述天线的抗干扰性能。另外,在本发明的所述天线中,在所述三极电路处理器611的所述第一连接端6111和所述电源VCC63之间设置所述电感612,以进一步降低所述抗振荡电路单元61的干扰,以提供适宜的激励电流而与低阻抗的所述天线相匹配。
根据所述较佳实施例,所述辐射源20的所述辐射源连接点21被电气连接于所述参考地10的所述参考地连接点11,从而使得所述辐射源20的所述辐射源连接点21被连接于所述接地点64,通过这样的连接方式,当激励电流自所述辐射源20的所述馈电点22被接入后,所述辐射源20的所述辐射源连接点21和所述馈电点22之间将产生电感特性而提供一定的阻抗,因而所述天线能轻易在极化方向被初始化以稳定地向外放射地产生辐射能量。同时,所述辐射源20的所述辐射源连接点21和所述馈电点22之间将产生电感特性而具有较低的阻抗,使所述天线的频宽将变窄,从而防止其接收或产生的电磁波信号被相邻电磁辐射频率或杂散辐射频率干扰,从而提高所述天线的抗干扰性能。
换句话说,当所述天线主体的阻抗被降低时,其相应的频宽将会变窄,从而所述天线主体产生的该电磁波信号的频率将会被更集中于该频宽内。结果将可防止所述天线主体产生的该电磁波信号遭受相邻电磁辐射频率或杂散辐射频率干扰,从而提高所述天线的抗干扰性能。值得一提的是,当所述天线主体的所述阻抗被降低时,所述激励电流的大小将被相对地增加。所述振荡电路单元61的所述阻抗将被进一步降低,以提供所述激励电流予所述天线主体。
因此,藉由将所述辐射源20接地和将所述辐射源连接点21和所述辐射源20的所述馈电点22之间的距离设置为大于或者等于1/64λ,所述辐射源20的所述馈电点22和所述参考地连接点11之间的部份将在高频率激励电流(即所述模拟电路70的L0b元件)下被电感。从而当所述天线主体被该激励电流激励以产生该电磁波信号时,尤其当在所述辐射源20的所述物理中点提供所述参考地连接点11时,将降低所述天线主体的阻抗。
值得一提的是,可以提供一电感予所述天线主体,其中所述电感的一端部被连接至所述参考地连接点11,而所述电感的另一端部则被接地。因此所述辐射源连接点21和所述辐射源20的所述馈电点22之间的距离不被限制。当所述参 考地10被接地,所述电感的接地端可藉由连接于所述参考地10而被接地。
图9和图10显示了依本发明的一第二较佳实施例,作为一变形实施方式,其中所述天线包括一参考地10A、两辐射源20A以及一微带连接部60A。两个所述辐射源20A彼此相邻,且被所述微带连接部60A电气连接。所述微带连接部60A被实施为一微连接带。各所述辐射源20A与所述参考地10A之间均形成有一辐射缝隙30A。
相应地,所述参考地10A具有一第一侧面101A和相对的一第二侧面102A,其中所述辐射源20A均被设置于所述参考地10A的所述第一侧面101A。参考图9和图10,每个所述辐射源20A均具有至少一辐射源连接点21A。所述参考地10A具有至少两参考地连接点11A。所述辐射源20A的所述辐射源连接点21A均分别被电气连接所述参考地10A的所述参考地连接点11A。一个所述辐射源20A具有一馈电点22A,而另一个所述辐射源20A不含任何馈电点。为了便于描述和理解,将被设置有所述馈电点22A的所述辐射源20A定义为一主辐射源201A,将另一个不设置馈电点所述辐射源20A定义为一副辐射源202A,如图9和图10所示。也就是说,所述主辐射源201A和所述副辐射源202A彼此相邻。在各所述主辐射源201A和所述副辐射源202A与所述参考地10A之间均形成所述辐射缝隙30A,其中所述微带连接部60A的两端分别被电气连接于所述主辐射源201A和所述副辐射源202A。
所述激励电流被自所述主辐射源201A的所述馈电点22A接入。当激励电流自所述主辐射源201A的所述馈电点22A被接入后,所述激励电流能够经所述微带连接部60A传到所述副辐射源202A,此时,所述天线将被在极化方向初始化而通过在所述辐射缝隙30A稳定地向外放射地产生所述辐射能量。因为所述主辐射源201A和所述副辐射源202A均被电气连接于所述参考地10A,从而当激励电流自所述主辐射源201A的所述馈电点22A被接入并通过所述微带连接部60A被传至所述副辐射源202A后,所述辐射源连接点21和所述馈电点22之间将产生电感特性而提供一定的阻抗,从而所述天线的频宽将变窄而防止所述天线接收或产生的电磁波信号被相邻电磁辐射频率或杂散辐射频率干扰,以提高所述天线的抗干扰性能。
优选地,所述主辐射源201A的所述辐射源连接点21A与所述馈电点22A之间的距离大于或者等于1/64λ,其中λ是所述天线接收或产生的电磁波信号的波 长。在电磁波信号的激励作用下,所述电磁波信号将使所述主辐射源201A的所述辐射源连接点21A与所述馈电点22A之间产生电感特性,当所述主辐射源201A的所述馈电点22A被偏离所述主辐射源201A的物理中点时,所述天线对用于所述电磁波信号的激励电流的大小要求将大幅降低。从而当所述激励电流自所述主辐射源201A的所述馈电点22A被接入时,所述天线更容易被在极化方向初始化。
优选地,所述主辐射源201A的所述辐射源连接点21A被定义为所述主辐射源201A的物理中点。即,所述主辐射源201A的物理中点被电气连接于所述参考地10A,以将所述主辐射源201A接地。因此所述辐射源连接点21A与所述主辐射源201A的边缘预设有一距离。相应地,所述副辐射源202A的所述辐射源连接点21A被定义为所述副辐射源202A的物理中点,其中所述副辐射源202A的物理中点被电气连接于所述参考地10A,从而所述副辐射源202A的所述辐射源连接点21A与所述副辐射源202A的边缘之间预设有一距离,进而使得所述天线在产生初始的极化方向后能够通过所述主辐射源201A和所述副辐射源202A均匀稳定地向外放射地产生所述辐射能量。在电磁波信号的激励作用下,并通过将所述主辐射源201A的物理中点和所述副辐射源202A的物理中点电气连接于所述参考地10A的方式,当所述激励电流自所述主辐射源201A的所述馈电点22A被接入并自所述微带连接部60A被接入所述副辐射源202A时,所述天线将能通过所述主辐射源201A和所述副辐射源202A均匀稳定地向外放射地产生辐射能量。同时,所述主辐射源201A的所述馈电点22A与所述主辐射源201A的所述辐射源连接点21A之间,以及所述微带连接部60A与所述副辐射源202A的所述辐射源连接点21A之间都将产生电感特性而降低所述天线的阻抗。因此,所述天线的频宽将被变窄,进而防止其接收或产生的电磁波信号被相邻电磁辐射频率或杂散辐射频率干扰,以提高所述天线的抗干扰性能。
参考图9和图10,所述天线进一步包括至少两电气连接元件40A,其中一个所述电气连接元件40A具有两端,分别电气连接于所述主辐射源201A的所述辐射源连接点21A和所述参考地10A的一所述参考地连接点11A,丛而使所述电气连接元件40A形成一电气连接媒介以将所述主辐射源201A和所述参考地10A相互电气连接,以将所述主辐射源201A接地。另一所述电气连接元件40A的两端分别被连接于所述副辐射源202A的所述辐射源连接点21A和所述参考地10A 的另一所述参考地连接点11A。因此,所述电气连接元件40A形成一电气连接媒介以将所述副辐射源202A和所述参考地10A相互电气连接,从而将所述副辐射源202A接地。
优选地,所述主辐射源201A和所述副辐射源202A中的至少一个辐射源的所述辐射源连接点21A的数量可以是两个以上。例如,在一个实施例当中,所述主辐射源201A提供两个或更多辐射源连接点21A,而所述副辐射源202A仅提供一个辐射源连接点21A,其中所述主辐射源201A的所述辐射源连接点21A环绕着所述主辐射源201A的物理中点。所述副辐射源202A的所述辐射源连接点21A为所述副辐射源202A的物理中点。在另一个实施例中,所述主辐射源201A的所述辐射源连接点21A的数量为一个,而所述副辐射源202A的所述辐射源连接点21A的数量为两个或更多。所述主辐射源201A的所述辐射源连接点21A为所述主辐射源201A的物理中点。所述副辐射源202A的物理中点被所述副辐射源202A的所述辐射源连接点21A环绕。在其它实施例中,所述主辐射源201A提供两个或更多辐射源连接点21A,而所述副辐射源202A也提供两个或更多辐射源连接点21A。所述主辐射源201A的物理中点被所述主辐射源201A的所述辐射源连接点21A环绕。所述副辐射源202A的物理中点被所述副辐射源202A的所述辐射源连接点21A环绕。
参考图9和图10,所述天线进一步包括一屏蔽罩50A,其中所述屏蔽罩50A被耦合于所述参考地10A的所述第二侧面102A。
图11和图12显示了依本发明的一第三较佳实施例,作为另一种变形实施方式,其中所述天线包括一参考地10B、四辐射源20B和三微带连接部60B,其中所述参考地10B具有一第一侧面101B和相对的一第二侧面102B。四个所述辐射源20B分别被两两成对地形成、并被彼此相邻地设置于所述参考地10B的所述第一侧面101B。所述微带连接部60A被实施为一微连接带。各所述辐射源20B与所述参考地10A之间均形成有一辐射缝隙30B。所述第一微带连接部60B具有两端,分别成对地连接于两个相邻的所述辐射源20B。所述第二微带连接部60B具有两端,分别另外成对地连接于两个相邻的所述辐射源20B。所述第三微带连接部60B具有两端,连接于所述第一和第二微带连接部60B之间。
根据该较佳实施例,所述四个辐射源20B依次定义为一第一辐射源210B、一第二辐射源220B、一第三辐射源230B以及一第四辐射源240B,其中所述第 一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B以此顺序顺时针地设置。从而使得所述第一辐射源210B分别与所述第二辐射源220B和所述第四辐射源240B相邻。所述第三辐射源230B分别与所述第二辐射源220B和所述第四辐射源240B相邻。所述第一辐射源210B和所述第三辐射源230B相对。所述第二辐射源220B和所述第四辐射源240B相对。并且,在所述第一辐射源210B与所述参考地10B之间形成所述辐射缝隙30B。在所述第二辐射源220B与所述参考地10B之间形成所述辐射缝隙30B。在所述第三辐射源230B与所述参考地10B之间形成所述辐射缝隙30B。在所述第四辐射源240B与所述参考地10B之间形成所述辐射缝隙30B。如前述的,所述三个微带连接部60B被定义为所述第一微带连接部61B、所述第二微带连接部62B、和所述第三微带连接部63B。所述第一微带连接部61B的两端分别被电气连接于所述第一辐射源210B和所述第二辐射源220B,所述第二微带连接部62B的两端分别被电气连接于所述第三辐射源230B和所述第四辐射源240B,所述第三微带连接部63B的两端分别被电气连接于所述第一微带连接部61B和所述第二微带连接部62B。
参考图11和图12,所述第一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B相应地被连接于所述参考地10B,其中当激励电流分别被接入所述第一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B时,所述天线将在极化方向被初始化而使所述天线能够接收或产生电磁波信号。
参考图11和图12,所述第一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B各具有至少一辐射源连接点21B。所述参考地10B具有至少四参考地连接点11B,分别被电气连接于所述第一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B。
所述第一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B各具有一馈电点22B,以供接入所述激励电流。优选地,所述第一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B当中任一的所述辐射源连接点21B与所述馈电点22B之间的距离大于或者等于1/64λ,其中λ是所述天线接收或产生的电磁波信号的波长。以在电磁波信号的激励作用下,所述电磁波信号将使所述第一辐射源210B、所述第二 辐射源220B、所述第三辐射源230B和所述第四辐射源240B当中任一的所述辐射源连接点21B与所述馈电点22B之间产生电感特性以提供一定的阻抗,从而所述天线在极化方向被初始化以稳定地向外放射地产生辐射能量。同时,所述辐射源连接点21B和所述馈电点22B之间和所述微带连接部60A之间都将产生电感特性,使所述天线的阻抗降低,因而使得所述天线的频宽变窄,以防止所述天线接收或产生的电磁波信号被相邻电磁辐射频率或杂散辐射频率干扰,从而提高所述天线的抗干扰性能。
进一步地,相应的辐射源20B的所述馈电点22B被偏离其物理中点,以降低所述天线对激励电流的大小要求,此外,当激励电流分别自所述第一辐射源210B的所述馈电点22B、所述第二辐射源220B的所述馈电点22B、所述第三辐射源230B的所述馈电点22B和自所述第四辐射源240B的所述馈电点22B被接入时,所述天线将更容易在极化方向被初始化。
优选地,所述第一辐射源210B的所述馈电点22B为连接所述第一微带连接部61B的连接点。所述第二辐射源220B的所述馈电点22B为连接所述第一微带连接部61B的连接点。所述第三辐射源230B的所述馈电点22B为连接所述第二微带连接部62B的连接点。所述第四辐射源240B的所述馈电点22B为连接所述第二微带连接部62B的连接点。
进一步地,所述天线具有一天线馈电点70B,被电气连接于所述第三微带连接部63B,当所述激励电流自所述天线的所述天线馈电点70B被接入,其藉由所述第一微带连接部61B和所述第二微带连接部62B通过所述第三微带连接部63B至所述第一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B的各所述馈电点22B,从而所述天线的频宽将变窄,进而防止其接收或产生的电磁波信号被相邻电磁辐射频率或杂散辐射频率干扰,以提高所述天线的抗干扰性能。
此外,当所述第一辐射源210B的所述辐射源连接点21B的数量是一个时,所述辐射源连接点21B将被定义为所述第一辐射源210B的物理中点;当所述第一辐射源210B的所述辐射源连接点21B的数量为两个或更多时,所述辐射源连接点21B将环绕所述第一辐射源210B的物理中点。当所述第二辐射源220B的所述辐射源连接点21B的数量是一个时,所述辐射源连接点21B将被定义为所述第二辐射源220B的物理中点;当所述第二辐射源220B的所述辐射源连接点 21B的数量为两个或更多时,所述辐射源连接点21B将环绕所述第二辐射源220B的物理中点。当所述第三辐射源230B的所述辐射源连接点21B的数量是一个时,所述辐射源连接点21B为所述第三辐射源230B的物理中点;当所述第三辐射源230B的所述辐射源连接点21B的数量为两个以上时,所述辐射源连接点21B环绕在所述第三辐射源230B的物理中点。当所述第四辐射源240B的所述辐射源连接点21B的数量是一个时,所述辐射源连接点21B为所述第四辐射源240B的物理中点;当所述第四辐射源240B的所述辐射源连接点21B的数量为两个以上时,所述辐射源连接点21B环绕在所述第四辐射源240B的物理中点。
参考图11和图12,所述天线进一步包括至少四电气连接元件40B,其中至少一个所述电气连接元件40B的两端分别电气连接于所述第一辐射源210B的所述辐射源连接点21B和所述参考地10B的所述参考地连接点11B,以将所述第一辐射源210B电气连接于所述参考地10B。至少一个所述电气连接元件40B的两端分别电气连接于所述第二辐射源220B的所述辐射源连接点21B和所述参考地10B的所述参考地连接点11B,以将所述第二辐射源220B电气连接于所述参考地10B。至少一个所述电气连接元件40B的两端分别电气连接于所述第三辐射源230B的所述辐射源连接点21B和所述参考地10B的所述参考地连接点11B,以将所述第三辐射源230B电气连接于所述参考地10B。至少一个所述电气连接元件40B的两端分别电气连接于所述第四辐射源240B的所述辐射源连接点21B和所述参考地10B的所述参考地连接点11B,以将所述第四辐射源240B电气连接于所述参考地10B。
参考图11和图12,所述天线进一步包括一屏蔽罩50B,其中所述屏蔽罩50B被耦合于所述参考地10B的所述第二侧面102B。
可以理解的是,上述的第一、第二、第三和第四仅用于描述本发明不同部件(或元件)的命名,其不应对任何对于本发明的不同部件、元件和结构产生区分。除非特别地指出,否则元件的次序或数目多少不受限制。具体地说,在附图11和图12示出的所述天线的这个具体的示例中,所述第一辐射源210B、所述第二辐射源220B、所述第三辐射源230B和所述第四辐射源240B仅用于描述本发明当中不同位置的所述辐射源20B的不同位置,其并不指代所述辐射源20B的次序或数目。
图13和图14显示作为本发明的一变形实施方式的第四较佳实施例,其中所 述天线包括一参考地10C和至少一辐射源20C,其中所述辐射源20C被相邻地设置于所述参考地10C,以在所述辐射源20C和所述参考地10C之间界定一辐射缝隙30C,相应地,至少一个辐射源20C被电气连接于所述参考地10C。
具体地说,所述参考地10C具有一第一侧面101C和相对的一第二侧面102C,其中所述辐射源20C被设置于所述参考地10C的所述第一侧面101C。
参考附图13和图14,所述辐射源20C具有一辐射源连接点21C和一馈电点22C,其中所述辐射源连接点21C和所述馈电点22C重合。所述参考地10C具有至少一参考地连接点11C。所述天线进一步包括至少一电气连接元件40B,优选地,其中所述电气连接元件40B为电感,并且所述电气连接元件40C具有两端,分别被电气连接于所述辐射源20C的所述辐射源连接点21C和所述参考地10C的所述参考地连接点11C,以藉由所述电气连接元件40C将所述辐射源20C电气连接于所述参考地10C。例如,所述电气连接元件40C可以是但不限于曲线连接式电感或螺纹连接式电感。在所述激励电流被所述辐射源20C的所述馈电点22C接入后,所述天线在所述辐射源20C于一极化方向被初始化,以向外放射地稳定地产生所述辐射能量。由于所述辐射源20C被所述电气连接元件40C电气连接于所述参考地10C,在所述激励电流被所述辐射源20C的所述馈电点22C接入后,将降低所述天线的阻抗,从而所述天线的频宽将变窄以防止所述天线接收或的电磁波信号被相邻频段的电磁辐射频率或杂散辐射频率干扰,从而提高了所述天线的抗干扰性能。
或者,将所述辐射源20C和所述参考地10C通过所述电气连接元件40C相互电气连接,其中于所述参考地10C形成一穿孔,并形成一金属层于所述穿孔的一壁,从而形成一金属化穿孔以作为所述电气连接元件40D以电气连接所述辐射源20C于所述参考地10C,如图15所示。值得一提的是,所述天线的所述馈电点被通过所述电气连接元件40D电气连接于所述振荡电路。
根据该较佳实施例,本发明进一步包括一天线的制造方法,其中包括如下步骤:
(c)以在一辐射源20和一参考地10之间形成所述辐射缝隙30,其中所述辐射源20被相邻地设置于所述参考地10的所述第一侧面101。
(d)将所述辐射源20接地,以形成所述天线。
相应地,在所述步骤(b)中,所述辐射源20被电气连接于所述参考地10,以 将所述辐射源20接地。
值得一提的是,所述步骤(b)也可以在所述步骤(a)之前,换句话说就是先电气连接所述辐射源20与所述参考地10,然后相邻地保持所述辐射源20于所述参考地10的所述第一侧面101。
在所述步骤(a)中,在所述参考地10的所述第一侧面101设置一实体介质;然后设置所述辐射源20于所述实体介质,以使所述辐射源20相邻地保持在所述参考地10,从而形成所述辐射缝隙30于所述辐射源20和所述参考地10之间。或者,先在所述辐射源20设置所述实体介质,然后配置所述介质于所述参考地10的所述第一侧面101,以相邻地保持所述辐射源20于所述参考地10,从而形成所述辐射缝隙30于所述辐射源20和所述参考地10之间。
本发明进一步提供所述天线的抗干扰方法,其包括步骤:将所述辐射源20接地,以降低所述天线的内阻抗;于所述辐射源20的所述馈电点22接入所述激励电流,以使所述天线的频宽变窄,从而大幅降低本发明的所述天线接收或产生的电磁波信号受到附近的相邻频段的电磁辐射频率或杂散辐射频率的任何干扰。
本领域的技术人员应理解,上述描述及附图中所示的本发明的实施例只作为举例而并不限制本发明。
本发明的目的已经完整并有效地实现。本发明的功能及结构原理已在实施例中展示和说明,在没有背离所述原理下,本发明的实施方式可以有任何变形或修改。因此,本发明包括所有下列权利要求的范围和精神所包含的所有的修改。

Claims (50)

  1. 一天线,其特征在于,包括:
    一参考地;和
    至少一辐射源,其中所述辐射源被相邻地设置于所述参考地,以在所述辐射源和所述参考地之间形成一辐射缝隙,而形成一天线主体,其中所述辐射源被接地以降低所述天线的阻抗。
  2. 如权利要求1所述的天线,其中所述辐射源被电气连接于所述参考地,以形成所述天线主体。
  3. 如权利要求2所述的天线,其中所述参考地具有一参考地连接点,其中所述辐射源具有至少一辐射源连接点和一馈电点,其中所述辐射源连接点被电气连接于所述参考地的所述参考地连接点以使所述辐射源接地,其中所述馈电点偏离所述辐射源的物理中心地被设置,以当所述馈电点被接入一激励电流时,所述天线能够被激励而产生一电磁波信号。
  4. 如权利要求3所述的天线,其中所述辐射源的所述辐射源连接点和所述馈电点之间的距离大于或等于1/64λ,其中λ为所述电磁波信号的波长。
  5. 如权利要求3所述的天线,其中所述辐射源的所述辐射源连接点被定义为其物理中点。
  6. 如权利要求3所述的天线,其中当提供两个或更多所述辐射源连接点时,所述辐射源的物理中点将被所述辐射源连接点环绕。
  7. 如权利要求3所述的天线,进一步包括一电气连接元件,其具有两端,分别被电气连接于所述辐射源的所述辐射源连接点和所述参考地的所述参考地连接点,以将所述辐射源电气连接于所述参考地。
  8. 如权利要求7所述的天线,其中所述电气连接元件处于流体状态下被填入所述辐射缝隙,再固化以将所述辐射源电气连接于所述参考地。
  9. 如权利要求3所述的天线,其中的所述辐射源连接点与所述馈电点重合。
  10. 如权利要求3所述的天线,进一步包括具有低阻抗的一抗干扰电路,其被电气连接于所述辐射源的所述馈电点,以容许所述激励电流通过所述抗干扰电路至所述辐射源的所述馈电点。
  11. 如权利要求10所述的天线,其中所述抗干扰电路包括被电气连接于所述辐射源的所述馈电点的一振荡电路单元及被电气连接于所述振荡电路单元的一混频检波电路单元。
  12. 如权利要求11所述的天线,其中所述振荡电路单元包括一三极电路处理器、一电感、一第一电阻、一第二电阻、一第一电容、一第二电容、一第三电容、一第四电容、和一第五电容,其中所述三极电路处理器包括一第一连接端、一第二连接端、和一第三连接端,其中所述电感的一端部被电气连接于一电源,而所述电感的另一端部被被电气连接于所述三极电路处理器的所述第一连接端,其中所述第一电阻的一端部被电气连接于所述三极电路处理器的所述第一连接端,而所述第一电阻的另一端部被电气连接于所述三极电路处理器的所述第二连接端,其中所述第一电容的一端部被电气连接于所述三极电路处理器的所述第二连接端,而所述第一电容的另一端部被电气连接于所述第二电容的一端部,其中所述第二电容的另一端部被电气连接于所述接地点,其中所述第三电容的一端部被电气连接于所述三极电路处理器的所述第一连接端,而所述第三电容的另一端部被电气连接于所述三极电路处理器的所述第三连接端,其中所述第二电阻的一端部被电气连接于所述三极电路处理器的所述第三连接端,而所述第二电阻的另一端部被电气连接于所述接地点,其中所述第四电容的一端部被电气连接于所述三极电路处理器的所述第三连接端,而所述第四电容的另一端部被电气连接于所述第五电容的一端部,其中所述第五电容的另一端部被电气连接于所述辐射源的所述馈电点。
  13. 如权利要求12所述的天线,其中所述混频检波电路单元包括一第一二极管和一第二二极管,其中所述第一二极管的一端部和所述第二二极管的一端部被连接于一输出端,所述第一二极管的另一端部和所述第二二极管的另一端部被连接于所述接地点。
  14. 如权利要求3所述的天线,进一步包括一模拟电路,电气连接于所述辐射源和所述参考地以被所述激励电流激励,其中所述模拟电路包括一第一模拟点模拟所述辐射源的所述辐射源连接点,和一第二模拟点模拟所述辐射源的所述馈电点。
  15. 如权利要求1所述的天线,进一步包括一微带连接部,当两所述辐射源被提供时电气连接于两所述辐射源,其中所述辐射缝隙被形成于各所述辐射源和所述参考地之间。
  16. 如权利要求15所述的天线,其中所述参考地具有两参考连接点,其中各所述辐射源具有至少一辐射源连接点,从而分别将所述辐射源的所述辐射源连接点电气连接于所述参考地的所述参考连接点。
  17. 如权利要求16所述的天线,其中一所述辐射源具有一馈电点,以形成一主辐射源,而另一所述辐射源不含任何馈电点,以形成一副辐射源,其中所述微带连接部的两端部被电气连接于所述主辐射源和所述副辐射源,其中在所述主辐射源的所述馈电点收到一激励电流后,所述微带连接部被设置供所述激励电流自所述主辐射源通过至所述副辐射源,从而使所述天线主体被激励而产生一电磁波信号。
  18. 如权利要求17所述的天线,其中所述主辐射源的所述辐射源连接点和所述馈电点之间的距离大于或等于1/64λ,其中λ为所述电磁波信号的波长。
  19. 如权利要求18所述的天线,其中所述主辐射源的所述辐射源连接点被界定为其物理中点,其中所述主辐射源的所述馈电点偏离其所述物理中点。
  20. 如权利要求16所述的天线,进一步包括至少两电气连接元件,其中一所述电气连接元件具有两端,分别电气连接于所述主辐射源的所述辐射源连接点和所述参考地的一所述参考地连接点,以将所述主辐射源电气地接地,其中另一所述电气连接元件具有两端分别电气连接于所述副辐射源的所述辐射源连接点和所述参考地的另一所述参考地连接点,以将所述副辐射源电气地接地。
  21. 如权利要求1所述的天线,进一步包括一屏蔽罩,其中所述参考地具有一第一侧 面和相对的一第二侧面,其中所述辐射源被相邻地设置于所述参考地的所述第一侧面,而所述屏蔽罩被耦合于所述参考地的所述第二侧面。
  22. 如权利要求1所述的天线,进一步包括第一至第三微带连接部,当四个所述辐射源被提供时电气连接四个所述辐射源,其中所述辐射缝隙被形成于各所述辐射源和所述参考地之间。
  23. 如权利要求22所述的天线,其中所述参考地具有四参考连接点,其中各所述辐射源具有一馈电点和至少一辐射源连接点,从而分别将所述辐射源的所述辐射源连接点电气连接于所述参考地的所述参考连接点。
  24. 如权利要求23所述的天线,其中所述辐射源被成对地形成,其中所述第一微带连接部具有两端部,被成对地电气连接于所述辐射源的所述馈电点,其中所述第二微带连接部具有两端部,被另成对地电气连接于所述辐射源的所述馈电点,其中所述第三微带连接部被电气连接于所述第一和第二微带连接部。
  25. 如权利要求24所述的天线,进一步包括一天线馈电点,其中所述天线馈电点被电气连接于所述第三微带连接部。
  26. 如权利要求24所述的天线,进一步包括至少四电气连接元件,其中所述电气连接元件分别被电气连接于所述辐射源的所述辐射源连接点和所述参考地的所述参考地连接点之间,以将所述辐射源电气地接地。
  27. 如权利要求3所述的天线,进一步包括至少一附加电感,其中所述附加电感的一端部被电气连接于所述辐射源的所述辐射源连接点,而所述附加电感的另一端部被接地。
  28. 如权利要求3所述的天线,进一步包括一电气连接元件,其包括一穿孔,形成于所述参考地,和一金属层,形成于所述穿孔的一壁,以形成一金属化穿孔以将所述辐射源电气连接于所述参考地。
  29. 一天线,其特征在于,包括:
    一天线主体,包括一辐射源,其中所述辐射源包括被接地的一辐射源连接点和一馈电点;和
    一振荡电路单元,其包括一三极电路处理器,具有一第一连接端、一第二连接端、和一第三连接端,其中所述第一连接端被电气连接于一电源,所述第二连接端被接地,所述第三连接端被电气连接于所述辐射源的所述馈电点,其中所述第三连接端作为一输出端而提供一激励电流予所述辐射源的所述馈电点,从而所述天线主体被激励以产生一电磁波信号。
  30. 如权利要求29所述的天线,其中所述天线主体进一步包括被电气连接于所述辐射源的一所述辐射源连接点的一参考地,从而将所述辐射源接地。
  31. 如权利要求29所述的天线,其中所述三极电路处理器的所述第三连接端为一MOS管的源极。
  32. 如权利要求29所述的天线,其中所述三极电路处理器的所述第三连接端为一三极管的发射极。
  33. 如权利要求29所述的天线,其中所述振荡电路单元进一步包括具有两端的一电感,一端被电气连接于所述电源,另一端被电气连接于所述三极电路处理器的所述第一连接端。
  34. 如权利要求29所述的天线,其中所述振荡电路单元进一步包括一第一电容和一第二电容,其中所述第一电容的一端部被电气连接于所述三极电路处理器的所述第二连接端,而所述第一电容的另一端部被电气连接于所述第二电容的一端部,其中所述第二电容的另一端部被接地。
  35. 一天线的制造方法,其中所述天线包括至少一辐射源和一参考地,其特征在于包括如下步骤:
    (a)相邻地设置所述辐射源于所述参考地,以形成一辐射缝隙于所述辐射源和所述参 考地之间;和
    (b)将所述辐射源电气连接于所述参考地以形成一天线主体,其中所述辐射源被接地以使所述天线的频宽变窄。
  36. 权利要求35所述的方法,其中在所述步骤(a)当中还包括设置一实体介质于所述辐射源和所述参考地之间以在两者间形成所述辐射缝隙的步骤。
  37. 权利要求35所述的方法,其中在所述步骤(b)当中还包括电气连接所述辐射源的至少一辐射源连接点至所述参考地的一参考地连接点以将所述辐射源接地的步骤,以及于所述辐射源的一馈电点接入一激励电流,以使所述天线主体被激励而产生一电磁波信号的步骤。
  38. 如权利要求37所述的方法,其中所述辐射源的所述辐射源连接点和所述馈电点之间的距离大于或等于1/64λ,其中λ为所述电磁波信号的波长。
  39. 权利要求37所述的方法,其中在所述步骤(b)当中还包括分别电气连接一电气连接元件的两端于所述辐射源的所述辐射源连接点和所述参考地的所述参考地连接点,以将所述辐射源电气连接于所述参考地。
  40. 如权利要求37所述的方法,进一步包括电气连接具有低阻抗的一抗干扰电路至所述辐射源的所述馈电点,以容许所述激励电流通过所述抗干扰电路至所述辐射源的所述馈电点的步骤。
  41. 如权利要求37所述的方法,进一步包括一步骤:电气连接一模拟电路于所述辐射源和所述参考地以被所述激励电流激励,其中所述模拟电路包括一第一模拟点模拟所述辐射源的所述辐射源连接点,和一第二模拟点模拟所述辐射源的所述馈电点。
  42. 如权利要求37所述的方法,进一步包括一步骤:当两所述辐射源被提供时,电气连接一微带连接部于两所述辐射源,其中所述辐射缝隙被形成于各所述辐射源和所述参考地之间。
  43. 如权利要求42所述的方法,进一步包括如下步骤:
    为所述辐射源配置一馈电点,以形成一主辐射源;
    配置另一所述辐射源,其不含任何馈电点,以形成一副辐射源;和
    电气连接所述微带连接部的两端部至所述主辐射源和所述副辐射源,从而在所述主辐射源的所述馈电点收到所述激励电流后,所述微带连接部被设置供所述激励电流自所述主辐射源通过至所述副辐射源。
  44. 如权利要求43所述的方法,进一步包括如下步骤:
    提供至少两电气连接元件;
    分别电气连接一所述电气连接元件的两端于所述主辐射源的所述辐射源连接点和所述参考地的一所述参考地连接点以将所述主辐射源电气地接地;和
    分别电气连接另一个所述电气连接元件的两端于所述副辐射源的所述辐射源连接点和所述参考地的另一个所述参考地连接点以将所述副辐射源电气地接地。
  45. 如权利要求35所述的方法,其中所述步骤(a)进一步包括一步骤:将四辐射源定位于所述参考地,其中所述辐射缝隙位于各所述辐射源和所述参考地之间,其中所述步骤(b)进一步包括一步骤:分别电气连接所述辐射源的辐射源连接点至所述参考地的所述参考连接点。
  46. 如权利要求45所述的方法,进一步包括如下步骤:
    两两相邻地设置所述四个辐射源;
    藉由一第一微带连接部成对连接两所述辐射源的两馈电点;
    藉由一第二微带连接部另成对连接两所述辐射源的两馈电点;和
    藉由一第三微带连接部将所述第一和第二微带连接部相互连接。
  47. 如权利要求46所述的方法,进一步包括一步骤:将所述天线的一天线馈电点电气连接于所述第三微带连接部。
  48. 一提高天线抗干扰性能的方法,其中所述天线包括至少一辐射源和一参考地,其 特征在于,包括如下步骤:
    (a)形成一辐射缝隙于所述辐射源和所述参考地之间;和
    (b)透过电气连接所述辐射源至所述参考地将所述辐射源接地,以降低所述天线的内阻抗,从而当一激励电流自所述辐射源的一馈电点被接入时,所述天线的频宽变窄将防止所述天线接收或产生的电磁波信号受到附近的相邻频段的电磁辐射频率或杂散辐射频率干扰。
  49. 如权利要求48所述的方法,进一步包括将一振荡电路单元电气连接至所述辐射源的所述馈电点的步骤,其中所述振荡电路单元包括具有一输出端的一三极电路处理器,以降低所述振荡电路单元的阻抗,从而为所述辐射源的所述馈电点提供一较大的激励电流并降低所述天线的所述内阻抗。
  50. 如权利要求49所述的方法,进一步包括如下步骤:
    电气连接所述三极电路处理器的一第一端至一电源
    将所述三极电路处理器的一第二端电气接地;和
    电气连接所述三极电路处理器的一第三端,也就是所述输出端,至所述辐射源的所述馈电点。
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