CN106684558B - Antenna with matching circuit - Google Patents
Antenna with matching circuit Download PDFInfo
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- CN106684558B CN106684558B CN201610943970.4A CN201610943970A CN106684558B CN 106684558 B CN106684558 B CN 106684558B CN 201610943970 A CN201610943970 A CN 201610943970A CN 106684558 B CN106684558 B CN 106684558B
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- radiator
- antenna
- radio frequency
- wireless communication
- feed unit
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- 238000004891 communication Methods 0.000 claims abstract description 38
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 230000005611 electricity Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 5
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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Abstract
The invention discloses an antenna with a matching circuit, which relates to the technical field of antennas and comprises a substrate, wherein a first radiator, a second radiator and an antenna feed unit are arranged on the substrate, the first radiator and the second radiator form a main radiator, a bonding pad is arranged on the second radiator, the antenna feed unit and the bonding pad are respectively and directly and electrically connected with a radio frequency circuit and a working place of a wireless communication system or are respectively and electrically connected with the radio frequency circuit and the working place of the wireless communication system through an inner conductor and an outer conductor of a radio frequency coaxial line, a plurality of electronic components I are connected between the antenna feed unit and the first radiator in series, the antenna feed unit and the second radiator are intermittently opened or are connected with a plurality of electronic components III in series, and the first radiator and the second radiator are intermittently opened or are connected with a plurality of electronic components II in series, so that the electronic components I, II and III form the matching circuit.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to an antenna with a matching circuit.
Background
In recent years, with rapid development and application of mobile communication technology and internet technology, wireless data transmission technology has been widely used. The antenna being a wireless data transmission important components of the system. Currently, in the application of wireless data transmission systems in the market, wireless data transmission is generally realized by adding a wireless communication module and an antenna or adding a wireless communication module with an antenna on the basis of the existing system. However, when the above-mentioned wireless communication module and antenna are added to the existing system or the wireless communication module with antenna is added, the matching of the antenna needs to be re-matched according to the specific working environment due to the interaction between the wireless communication module and the working system, and generally the matching circuit is located in the wireless communication module. This results in a specific one a wireless data transmission system is applied to a wireless data transmission system, the need to re-produce a batch of wireless communication modules (because the matching circuits on the wireless communication modules need to be changed according to the actual working environment) causes cost increase and efficiency reduction.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an antenna with a matching circuit, so as to solve the defects caused by the prior art.
To realize the above the object of the present invention is to provide a method for manufacturing a semiconductor device, the invention provides the following technical scheme: the utility model provides an antenna from taking matching circuit, includes the base plate, the base plate on be equipped with first radiator, second radiator and antenna feed unit, first radiator and second radiator constitute the main radiator, are equipped with the pad on the second radiator, antenna feed unit with the pad carries out electric connection with outside wireless communication system: the antenna feed unit is electrically connected with a radio frequency circuit of the wireless communication system, and the bonding pad is electrically connected with a working place of the wireless communication system; or the antenna feed unit is electrically connected with the inner conductor of the radio frequency coaxial line, and the bonding pad is electrically connected with the outer conductor of the radio frequency coaxial line; the other end of the radio frequency coaxial line is communicated with the wireless through the radio frequency connector radio frequency line and operatively electrically connected or radio frequency coaxial line of system
Inner and outer conductors at one end respectively communicate with wireless the radio frequency circuit of the system is electrically connected with the working ground;
a plurality of electronic components I are connected in series between the antenna feed unit and the first radiator, a plurality of electronic components III are disconnected or connected in series between the antenna feed unit and the second radiator, a plurality of electronic components II are disconnected or connected in series between the first radiator and the second radiator, and the electronic components I, the electronic components II and the electronic components III form a matching circuit.
Preferably, the electronic component I, the electronic component II and the electronic component III are inductors or capacitors with concentrated parameters.
Preferably, the inductance value or the capacitance value of the electronic component i, the electronic component ii and the electronic component iii are changeable.
The beneficial effects of adopting above technical scheme are: when the antenna works in different working environments, the matching circuit on the antenna can be simply replaced, so that the antenna is suitable for various working environments, corresponding modification is not needed to be additionally made at a wireless communication module, the design difficulty of a wireless data transmission system is simplified, the working efficiency is improved, the antenna with the matching circuit is simple in structure, convenient to install and debug, and the market of antenna application is widened.
Drawings
Fig. 1 is a schematic structural view in embodiment 1 of the present invention.
Fig. 2 is a schematic structural view in another state in embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of embodiment 2 of the present invention.
Fig. 4 is a schematic structural view of embodiment 3 of the present invention.
Fig. 5 is a graph showing experimental results of measured return loss of the antenna in example 1 of the present invention and the antenna without the matching circuit.
The antenna comprises a 001-substrate, a 101-first radiator, a 102-second radiator, a 201-antenna feed unit, 301-bonding pads, 401-electronic components I, 402-electronic components II and 403-electronic components III.
Description of the embodiments
The antenna with the matching circuit of the present invention is described in detail below with reference to the accompanying drawings.
Examples
Fig. 1 and 2 show an embodiment of an antenna with a matching circuit according to the present invention: the antenna with the matching circuit comprises a substrate 001, wherein a first radiator 101, a second radiator 102 and an antenna feed unit 201 are arranged on the substrate 001, the first radiator 101 and the second radiator 102 form a main radiator, a bonding pad 301 is arranged on the second radiator 102, the antenna feed unit 201 and the bonding pad 301 are electrically connected with an external wireless communication system, the antenna feed unit 201 is electrically connected with a radio frequency circuit of the wireless communication system, and the bonding pad 301 is electrically connected with an operating area of the wireless communication system; a plurality of electronic components I401 are connected in series between the antenna feed unit 201 and the first radiator 101, a plurality of electronic components III 403 are connected in series between the antenna feed unit 201 and the second radiator 102, a plurality of electronic components II 402 are connected in series between the first radiator 101 and the second radiator 102, and the electronic components I401, II 402 and III 403 form a matching circuit. The matching circuit of the antenna is pi-shaped as shown in fig. 2.
In this embodiment, the antenna feeding unit 201 is electrically connected to the radio frequency circuit of the wireless communication system through the radio frequency coaxial line after being electrically connected to the inner conductor of the radio frequency coaxial line; the bonding pad 301 is electrically connected to the external conductor of the rf coaxial line and then electrically connected to the working ground of the wireless communication system through the rf coaxial line, and the connection state diagram of the antenna is shown in fig. 1, because the antenna feed unit 201 and the bonding pad 301 can be directly and electrically connected to the rf line and the working ground of the wireless communication system respectively or electrically connected to the internal and external conductors of the rf coaxial line respectively and then electrically connected to the rf line and the working ground of the wireless communication system through the rf coaxial line, the standing wave ratio of the antenna tested from the antenna feed unit 201 and the bonding pad 301 and the standing wave ratio tested at the electrical connection position of the antenna and the wireless communication system of the invention will not be deteriorated, and the antenna performance is ensured.
In this embodiment, the electronic component i 401, the electronic component ii 402, and the electronic component iii 403 are inductors or capacitors with concentrated parameters.
In this embodiment, the inductance or capacitance of the electronic component i 401, the electronic component ii 402, and the electronic component iii 403 may be variable.
In this embodiment, when the antenna works in different working environments, the antenna environment changes, the resonant frequency of the antenna may change, and the resonant frequency of the antenna can be readjusted to a required working frequency band by changing the values of the electronic component i 401, the electronic component ii 402 and the electronic component iii 403 in the matching circuit, so as to realize the matching of the antenna to the specific working environment.
Example 2
Fig. 3 shows another embodiment of the antenna with matching circuit according to the present invention: the antenna with the matching circuit comprises a substrate 001, wherein a first radiator 101, a second radiator 102 and an antenna feed unit 201 are arranged on the substrate 001, the first radiator 101 and the second radiator 102 form a main radiator, a bonding pad 301 is arranged on the second radiator 102, the antenna feed unit 201 and the bonding pad 301 are electrically connected with an external wireless communication system, the antenna feed unit 201 is electrically connected with a radio frequency circuit of the wireless communication system, and the bonding pad 301 is electrically connected with an operating area of the wireless communication system; a plurality of electronic components I401 are connected in series between the antenna feed unit 201 and the first radiator 101, a plurality of electronic components III 403 are connected in series between the antenna feed unit 201 and the second radiator 102, the first radiator 101 and the second radiator 102 are in a disconnected state, and the electronic components I401 and the electronic components III 403 form a matching circuit. The matching circuit of the antenna is in an L-shaped structure as shown in fig. 3.
In this embodiment, the antenna feeding unit 201 is electrically connected to the inner conductor of the rf coaxial line, and the bonding pad 301 is electrically connected to the outer conductor of the rf coaxial line; the other end of the radio frequency coaxial line is connected with the radio frequency line and the working electricity of the wireless communication system through the radio frequency connector, or the inner conductor and the outer conductor of the other end of the radio frequency coaxial line are respectively connected with the radio frequency line and the working electricity of the wireless communication system.
In this embodiment, the electronic component i 401 and the electronic component iii 403 are inductors or capacitors with concentrated parameters.
In this embodiment, the inductance or inductance of the electronic component I401 and the electronic component III 403
The capacitance value is variable.
In this embodiment, when the antenna works in different working environments, the antenna environment changes, and the resonant frequency of the antenna may change, and by changing the values of the electronic component i 401 and the electronic component iii 403 in the matching circuit, the resonant frequency of the antenna of the present invention can be readjusted to a required working frequency band, so as to realize the matching of the antenna to a specific working environment.
Examples
Fig. 4 shows another embodiment of the antenna with matching circuit according to the present invention: the antenna with the matching circuit comprises a substrate 001, wherein a first radiator 101, a second radiator 102 and an antenna feed unit 201 are arranged on the substrate 001, the first radiator 101 and the second radiator 102 form a main radiator, a bonding pad 301 is arranged on the second radiator 102, the antenna feed unit 201 and the bonding pad 301 are electrically connected with an external circuit, the antenna feed unit 201 is electrically connected with a radio frequency circuit of a wireless communication system, and the bonding pad 301 is electrically connected with a working place of the wireless communication system; a plurality of electronic components I401 are connected in series between the antenna feed unit 201 and the first radiator 101, the antenna feed unit 201 and the second radiator 102 are in a disconnected state, a plurality of electronic components II 402 are connected in series between the first radiator 101 and the second radiator 102, and the electronic components I401 and the electronic components II 402 form a matching circuit. The matching circuit of the antenna is in an L-shaped configuration as shown in fig. 4.
In this embodiment, the antenna feeding unit 201 is electrically connected to the inner conductor of the rf coaxial line, and the bonding pad 301 is electrically connected to the outer conductor of the rf coaxial line; the other end of the radio frequency coaxial line is connected with the radio frequency line and the working electricity of the wireless communication system through the radio frequency connector, or the inner conductor and the outer conductor of the other end of the radio frequency coaxial line are respectively connected with the radio frequency line and the working electricity of the wireless communication system.
In this embodiment, the electronic component i 401 and the electronic component ii 402 are inductors or capacitors with concentrated parameters.
In this embodiment, the inductance value or the capacitance value of the electronic component i 401 and the electronic component ii 402 may be variable.
In this embodiment, when the antenna works in different working environments, the antenna environment changes, the resonant frequency of the antenna may change, and by changing the values of the electronic component i 401 and the electronic component ii 402 in the matching circuit, the resonant frequency of the antenna of the present invention can be readjusted to a required working frequency band, so as to realize the matching of the antenna to a specific working environment.
Fig. 5 is a graph showing experimental results of measured return loss of the antenna in example 1 of the present invention and the antenna without the matching circuit. Taking an antenna working in the 2.4GHz ISM frequency band as an example, the required frequency resonance point of the antenna is near 2.45GHz, the frequency working bandwidth of the antenna covers 2.4-2.85GHz, namely, the return loss dBS11< -7.3dB in the frequency band range of 2.4-2.85GHz.
In this embodiment, the measured return loss of the antenna without the matching circuit is shown by the dashed line in the figure, and it can be seen from the figure that the actual resonance point of the antenna is 2.39GHz, the resonance frequency point of the antenna required by us is 2.45GHz, the working frequency band of the antenna covers 2.4-2.85GHz, and the actual working frequency band of the antenna cannot completely cover the required 2.4-2.85GHz. By using the antenna with the matching circuit, the centralized parameter inductance with the inductance value of 1.5nH is used at the electronic component I401, and after the centralized parameter capacitance with the capacitance value of 1.5pF is used at the electronic component II 402, the actual measured resonance frequency point of the antenna is 2.44GHz, and the actual working frequency band of the antenna covers 2.4-2.85GHz, so that the actual requirements of people are met.
Based on the above, the antenna with the matching circuit has the beneficial effects that compared with the prior art: when the antenna works in different working environments, the matching circuit on the antenna can be simply replaced, so that the antenna is suitable for various working environments, corresponding modification is not needed to be additionally made at a wireless communication module, the design difficulty of a wireless data transmission system is simplified, the working efficiency is improved, the antenna with the matching circuit is simple in structure, convenient to install and debug, and the market of antenna application is widened.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (2)
1. The utility model provides an antenna from taking matching circuit which includes the base plate, its characterized in that: the base plate on be equipped with first radiator, second radiator, antenna feed unit, pad and matching circuit, first radiator and second radiator constitute the main radiator, are equipped with the pad on the second radiator, antenna feed unit with the pad carries out electric connection with outside wireless communication system: the antenna feed unit is electrically connected with a radio frequency circuit of the wireless communication system, the bonding pad is electrically connected with a working ground of the wireless communication system, or the antenna feed unit is electrically connected with an inner conductor of the radio frequency coaxial line, and the bonding pad is electrically connected with an outer conductor of the radio frequency coaxial line; the other end of the radio frequency coaxial line is electrically connected with a radio frequency circuit and working electricity of the wireless communication system through a radio frequency connector or an inner conductor and an outer conductor of the other end of the radio frequency coaxial line are respectively electrically connected with the radio frequency circuit and working electricity of the wireless communication system;
the matching circuit comprises an electronic component I, an electronic component II and an electronic component III, wherein a plurality of electronic components I are connected in series between the antenna feed unit and the first radiator, a plurality of electronic components III are disconnected or connected in series between the antenna feed unit and the second radiator, and a plurality of electronic components II are disconnected or connected in series between the first radiator and the second radiator; the electronic component I, the electronic component II and the electronic component III are inductors or capacitors with concentrated parameters;
when the antenna works in different working environments, the matching circuit on the antenna can be simply replaced, so that the antenna is suitable for various working environments, and corresponding modification at the wireless communication module is not needed.
2. An antenna with a matching circuit according to claim 1, characterized in that the inductance or capacitance of the electronic components i, ii and iii are variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610943970.4A CN106684558B (en) | 2016-11-02 | 2016-11-02 | Antenna with matching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610943970.4A CN106684558B (en) | 2016-11-02 | 2016-11-02 | Antenna with matching circuit |
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| Publication Number | Publication Date |
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| CN106684558A CN106684558A (en) | 2017-05-17 |
| CN106684558B true CN106684558B (en) | 2023-12-29 |
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| CN201610943970.4A Active CN106684558B (en) | 2016-11-02 | 2016-11-02 | Antenna with matching circuit |
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