CN115051147B - Miniaturized high-efficiency reconfigurable omnidirectional antenna and antenna tuning method thereof - Google Patents
Miniaturized high-efficiency reconfigurable omnidirectional antenna and antenna tuning method thereof Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/002—Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
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- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention provides a miniaturized high-efficiency reconfigurable ultrashort wave vehicle-mounted antenna and an antenna tuning method thereof, belonging to the technical field of communication, wherein the antenna comprises an upper radiator, a lower radiator and a tuning module, and the upper radiator is electrically connected with the tuning module through the lower radiator; the tuning module comprises a control unit and a plurality of PIN switches, the PIN switches are electrically connected with the control unit, and the control unit tunes the radio frequency signals of the antenna by controlling one of the PIN switches or the PIN switches. According to the invention, by selecting proper radiator size and feeding position, the antenna is matched with a 30-88 MHz broadband by connecting an inductor in series, so that the contradiction between miniaturization and broadband of the ultra-short wave vehicle-mounted antenna is solved while the high radiation efficiency of the antenna is ensured, and the miniaturized ultra-short wave vehicle-mounted antenna works in the broadband.
Description
Technical Field
The invention belongs to the technical field of communication, relates to an ultrashort wave communication technology, and particularly relates to a miniaturized high-efficiency reconfigurable omnidirectional antenna and an antenna tuning method thereof.
Background
The single whip omnidirectional antenna is the most common form of the ultra-short wave vehicle-mounted antenna, the frequency band vehicle-mounted omnidirectional antenna of military equipment in China mainly comprises a 1.8-meter bottom feed whip antenna and a 3-meter middle feed whip antenna, for example, the invention patent with the publication number of CN102157772A discloses a vehicle-mounted ultra-short wave broadband antenna, the frequency band work of 30 MHz-88 MHz is realized by introducing a broadband matching network, the matching network consists of non-consumption components such as a capacitor, an inductance coil and a transmission line transformer, in theory, the matching network does not cause extra energy loss to the antenna, but in order to realize broadband matching of a smaller-sized antenna, a multistage matching network is often required, even a magnetic ring transformer is loaded, the matching network is complicated, and in addition, an inherent loss resistance is inevitably present in the actual reactance element, particularly the magnetic ring transformer loaded with a magnetic core, larger loss is generated during high-power operation, and the antenna efficiency is reduced, and the ultra-short wave vehicle-mounted antenna is the fundamental cause of generally lower gain during low frequency band. Under the condition of limited volume, the performances of the antenna are mutually restricted. Miniaturization and broadband are necessarily a contradictory requirement for antennas of any operating band.
The conventional tuning matching method essentially reduces the Q value (quality factor) of the antenna to achieve broadband impedance matching. In order to increase the anti-interference capability, the most common communication mode of ultrashort wave communication is ultrashort wave frequency hopping communication, namely, the working frequency of a radio station is changed continuously and does not work in a very wide bandwidth at the same time. For short wave antennas, the reconfigurability of the antenna is often realized in a matching network, namely, frequency reconfigurability matching is realized by utilizing a switching reactance element, and a wideband matching network is subjected to reconfigurability optimization design. On one hand, the working frequency of the ultra-short wave antenna (frequency) is not as low as that of a short wave frequency band, so that the antenna is too large; on the other hand, the introduction of the traditional antenna tuner causes serious complexity of a matching network, has larger insertion loss and higher cost, and is not suitable for a vehicle-mounted station. Therefore, in the prior art, the contradiction between miniaturization and broadband of the ultra-short wave vehicle-mounted antenna cannot be solved while ensuring high radiation efficiency of the antenna.
Disclosure of Invention
Aiming at the problems that the contradiction between miniaturization and broadband of an ultrashort wave vehicle-mounted antenna can not be solved while ensuring high radiation efficiency of the antenna in the prior art, the invention provides a miniaturized high-efficiency reconfigurable omnidirectional antenna and an antenna tuning method thereof.
According to the invention, by selecting proper radiator size and feed position, the initial impedance of the antenna is in a region which can be matched by series inductance in a Smith chart, the feeder line at the bottom of the antenna is wound into inductance, and the selective inductance is carried out through a diode, so that the ultra-short wave antenna can realize various tuning states, the reconstruction of the ultra-short wave antenna is realized, and the broadband of the ultra-short wave antenna is realized under the condition of not increasing the volume of the ultra-short wave antenna; diodes are chosen because of their superior switching speed to meet the needs of frequency hopping communications.
The specific technical scheme is as follows:
The miniaturized high-efficiency reconfigurable omnidirectional antenna comprises an upper radiator, a lower radiator and a tuning module, wherein the upper radiator is electrically connected with the lower radiator;
the tuning module comprises a plurality of control units and PIN switches, the PIN switches are electrically connected with the control unit, the control unit tunes radio frequency signals of the antenna by controlling one PIN switch or the PIN switches, and the control unit is electrically connected with the lower radiator.
Further limited, the number of PIN switches is more than or equal to 7.
Further defined, the control unit comprises a bit controller and an MCU controller, wherein the MCU controller is electrically connected with the bit controller, and a plurality of PIN switches are electrically connected with the bit controller; the MCU controller receives the control command, changes the matching network structure and parameters according to preset matching network parameters contained in the control command, completes matching of the antenna impedance, generates control signals and sends the control signals, and the bit controller receives the control signals and controls one PIN switch or a plurality of PIN switches to be opened or closed according to the control signals so as to tune radio frequency signals of the antenna.
Further defined, the tuning module further includes a plurality of power supplies, one for each PIN switch, the PIN switch electrically connected to the bit controller through the power supply.
Further defined, the PIN switch includes an inductance and a control switch, both of which are connected to a power source.
Further defined, the inductance is an adjustable inductance; the control switch is a diode.
Further defined, the PIN switches = 7.
Further defined, the upper radiator is a metal tube with the diameter of 40-50mm, and the length of the upper radiator is 300-500 mm; the lower radiator is a metal tube with the diameter of 90-110 mm, and the length of the lower radiator is 500-600 mm.
The antenna tuning method based on the miniaturized high-efficiency reconfigurable omnidirectional antenna comprises the following steps:
1) The MCU controller receives the control command and determines preset matching network parameters according to the control command;
2) Reading an inductance value and PIN switch parameter configuration table according to the preset matching network parameters in the step 1), modifying the matching network structure and parameters, completing the matching of antenna impedance, generating a control signal and transmitting the control signal;
3) The bit controller receives the control signal and controls one PIN switch or a plurality of PIN switches to be opened or closed according to the matching network structure and parameters in the control signal, and the radio frequency signal of the antenna is tuned.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention provides a miniaturized high-efficiency reconfigurable omnidirectional antenna, wherein a tuning module comprises a control unit and a PIN switch, and a miniaturized high-efficiency 30 MHz-88 MHz ultrashort wave reconfigurable vehicle-mounted antenna is provided, and the sum of the heights of an upper radiator and a lower radiator of the antenna is about 1 meter; only by controlling one PIN switch or a plurality of PIN switches to tune the radio frequency signal impedance of the antenna, the impedance matching in the whole frequency band can be realized, the antenna efficiency is greatly improved, and the antenna size is reduced; the contradiction between miniaturization and broadband of the ultra-short wave vehicle-mounted antenna is solved while the high radiation efficiency of the antenna is ensured, and the miniaturized ultra-short wave vehicle-mounted antenna works in a broadband.
2. The number of PIN switches is more than or equal to 7; by at least 7 PIN switches, the inductors are reasonably combined to realize various tuning states, so that the full frequency band matching of 30-88 MHz is achieved.
3. The control unit comprises a bit controller and an MCU controller, the MCU controller is electrically connected with the bit controller, and a plurality of PIN switches are electrically connected with the bit controller; the MCU controller receives the control command, changes the structure and parameters of the matching network according to the preset matching network parameters contained in the control command, completes the matching of the antenna impedance, generates a control signal and sends the control signal; the bit controller receives the control signal and controls one or more PIN switches to be opened or closed according to the control signal, and then the radio frequency signal of the antenna is tuned.
4. PIN switches=7, 64 tuning states can be realized through the on-off control of the 7 PIN switches, and the bandwidth requirement that standing wave ratio is better than 2 is completely met.
Drawings
Fig. 1 is a schematic structural diagram of a miniaturized high-efficiency reconfigurable omnidirectional antenna of the present invention;
FIG. 2 is a schematic diagram of circuit connections of a tuning module;
FIG. 3 is a schematic diagram of the connection of a plurality of PIN switches;
FIG. 4 is a schematic diagram of the structure of a PIN switch;
fig. 5 is a graph comparing gain of a miniaturized high efficiency reconfigurable omni-directional antenna with that of a 3.4 meter center fed antenna according to the present invention;
fig. 6 is a diagram of the original input impedance simulation of a miniaturized high efficiency reconfigurable omnidirectional antenna of the present invention;
FIG. 7 is a chart of the impedance region of a single element of an antenna in a Smith chart;
fig. 8 is a smith chart of a miniaturized high efficiency reconfigurable omni-directional antenna of the present invention;
The antenna comprises a 1-upper radiator, a 2-lower radiator, a 3-tuning module, a 4-PIN switch, a 41-inductor, a 42-control switch, a 5-power supply, a 6-position controller and a 7-MCU controller.
Detailed Description
The technical scheme of the present invention will be further explained with reference to the drawings and examples, but the present invention is not limited to the embodiments described below.
Example 1
Referring to fig. 1 and 2, a miniaturized high-efficiency reconfigurable omnidirectional antenna of the present embodiment includes an upper radiator 1, a lower radiator 2, and a tuning module 3, the upper radiator 1 being electrically connected to the tuning module 3 through the lower radiator 2;
The tuning module 3 comprises a control unit and a plurality of PIN switches 4, the PIN switches 4 are electrically connected with the control unit, the control unit tunes radio frequency signals of the antenna by controlling one of the PIN switches 4 or the PIN switches 4, and the control unit is electrically connected with the lower radiator 2.
Preferably, the number of PIN switches 4 is greater than or equal to 7, and the specific number can be 7, 8, 9 or even more, and the number of the PIN switches is determined according to the working bandwidth of the antenna.
The working frequency band of the miniaturized high-efficiency reconfigurable omnidirectional antenna of the embodiment is as follows: 30 MHz-88 MHz.
The upper radiator 1 of the present embodiment is a metal pipe having a diameter of 40 mm, 43 mm, 45 mm, 48 mm or 50 mm, and preferably, the upper radiator 1 is a metal pipe having a diameter of 45 mm; the upper radiator 1 of the present embodiment is 300 mm, 350 mm, 400 mm, 450 mm or 500 mm in length, and preferably, the upper radiator 1 is 400 mm in length; the lower radiator 2 of the present embodiment is a metal pipe having a diameter of 90 mm, 95 mm, 100 mm, 105 mm or 110 mm, and preferably, the lower radiator 2 is a metal pipe having a diameter of 100 mm; the length of the lower radiator 2 of the present embodiment is 500 mm, 530 mm, 560 mm, 580 mm or 600 mm, and preferably the length of the lower radiator 2 is 560 mm.
Further preferably, the sum of the lengths of the upper radiator 1 and the lower radiator 2 in this embodiment is 1000 mm.
By optimizing the position of the feeding point and the diameters of the upper radiator 1 and the lower radiator 2, when the diameter of the lower radiator 2 is 100mm and the height is about 560mm and the diameter of the upper radiator 1 is 45mm and the height is about 400mm, referring to fig. 6, the initial impedance of the antenna presents a significantly low impedance in the frequency band below 62MHz, and the impedance gradually increases with the increase of frequency; the reactive part exhibits capacitive properties throughout the bandwidth and the capacitance gradually decreases as the frequency increases.
Referring to fig. 7 and 8, the antenna original impedance is adjusted to the proper position shown in fig. 8 by optimizing the length and diameter of the upper radiator 1 and the length and diameter of the lower radiator 2 in the miniaturized high-efficiency reconfigurable omnidirectional antenna of the present invention. Comparing the antenna impedance at the smith chart location shows that under 62MHz, matching of the impedance with 50 ohms can be achieved by simply connecting one inductor 41 in series, and the lower the frequency, the larger the inductance value required. In the frequency range of 62 MHz-88 MHz, the overall height of the antenna is close to the natural resonance size of the frequency range, the impedance is also close to the central area in the position of the Smith chart, and the standing wave ratio in the frequency range meets the index requirement less than or equal to 3.0 without additional impedance matching. Thus, the present invention can be implemented to operate in a wide frequency band range of 62MHz to 88MHz by controlling the closing or opening of the plurality of PIN switches 4.
Example 2
Referring to fig. 3 and 4, in the miniaturized high-efficiency reconfigurable omnidirectional antenna of the present embodiment, on the basis of embodiment 1, a control unit includes a bit controller 6 and an MCU controller 7, the MCU controller 7 is electrically connected with the bit controller 6, and a plurality of PIN switches 4 are electrically connected with the bit controller 6; the MCU controller 7 receives the control command, changes the matching network structure and parameters according to the preset matching network parameters contained in the control command, completes the matching of the antenna impedance, generates and transmits a control signal, and the bit controller 6 receives the control signal and controls one PIN switch 4 or a plurality of PIN switches 4 to be opened or closed according to the control signal so as to tune the radio frequency signal of the antenna. The matching network structure refers to an open or closed state structure of the plurality of PIN switches 4, and the parameter refers to an inductance value formed by each PIN switch 4.
The tuning module 3 further comprises a plurality of power supplies 5, each PIN switch 4 corresponds to one power supply 5, and the PIN switch 4 is electrically connected with the bit controller 6 through the power supply 5. I.e. the number of PIN switches 4 and the number of power supplies 5 are in one-to-one correspondence.
The PIN switch 4 of the present embodiment includes an inductor 41 and a control switch 42, both the inductor 41 and the control switch 42 are connected to the power source 5, and the inductor 41 is connected in parallel with the control switch 42.
Preferably, the inductance 41 is an adjustable inductance; the control switch 42 is a diode.
Example 3
In the miniaturized high-efficiency reconfigurable omnidirectional antenna of the embodiment, 4=7 PIN switches are adopted on the basis of embodiment 1 and embodiment 2;
the bottom end of the upper radiator 1 is electrically connected with the top end of the lower radiator 2, and the bottom end of the lower radiator 2 is electrically connected with the tuning module 3; the tuning module 3 comprises a control unit, 7 power supplies 5 and PIN switches 4, wherein 7 PIN switches 4 are respectively a first PIN switch, a second PIN switch, a third PIN switch, a fourth PIN switch, a fifth PIN switch, a sixth PIN switch and a seventh PIN switch, and 7 power supplies 5 are respectively a first power supply, a second power supply, a third power supply, a fourth power supply, a fifth power supply, a sixth power supply and a seventh power supply; the control unit comprises a bit controller 6 and an MCU controller 7, wherein a first power supply, a second power supply, a third power supply, a fourth power supply, a fifth power supply, a sixth power supply and a seventh power supply are all electrically connected with the bit controller 6, the first power supply is connected with the first PIN switch in series, the second power supply is connected with the second PIN switch in series, the third power supply is connected with the third PIN switch in series, the fourth power supply is connected with the fourth PIN switch in series, the fifth power supply is connected with the fifth PIN switch in series, the sixth power supply is connected with the sixth PIN switch in series, and the seventh power supply is connected with the seventh PIN switch in series.
The PIN switch 4 of the present embodiment includes an inductor 41 and a control switch 42, both the inductor 41 and the control switch 42 are connected to the power source 5, and the inductor 41 is connected in parallel with the control switch 42.
Preferably, the inductance 41 is an adjustable inductance; the control switch 42 is a diode.
The working frequency band of the miniaturized high-efficiency reconfigurable omnidirectional antenna of the embodiment is as follows: 30 MHz-88 MHz.
Example 4
The antenna tuning method of the miniaturized high-efficiency reconfigurable omnidirectional antenna of the present embodiment, which is formed based on the miniaturized high-efficiency reconfigurable omnidirectional antenna of embodiment 2, includes the steps of:
1) The MCU controller 7 receives the control command and determines preset matching network parameters according to the control command;
2) Reading an inductance value and PIN switch parameter configuration table according to the preset matching network parameters in the step 1), modifying the matching network structure and parameters, completing the matching of antenna impedance, generating a control signal and transmitting the control signal;
3) The bit controller 6 receives the control signal and controls one PIN switch 4 or a plurality of PIN switches 4 to be opened or closed according to the matching network structure and parameters in the control signal, so as to tune the radio frequency signal of the antenna.
The matching network structure refers to an open or closed state structure of the plurality of PIN switches 4, and the parameter refers to an inductance value formed by each PIN switch 4.
The antenna tuning method of the miniaturized high-efficiency reconfigurable omnidirectional antenna of the present embodiment will be described with the number of PIN switches 4 being 7:
1) The MCU controller 7 receives the control command and determines preset matching network parameters according to the control command;
2) Reading an inductance value and PIN switch parameter configuration table according to the preset matching network parameters in the step 1), modifying the matching network structure and parameters, completing the matching of antenna impedance, generating a control signal and transmitting the control signal;
3) The bit controller 6 receives the control signal and controls one PIN switch 4 or a plurality of PIN switches 4 to be opened or closed according to the matching network structure and parameters in the control signal, so as to tune the radio frequency signal of the antenna.
Taking 175nH as an example of a matching network parameter, according to the table1, the inductance value and PIN switch parameter configuration table searches the total inductance value to 175nH, searches the second row, the first PIN switch and the second PIN switch of the second row are required to be opened, the other PIN switches are closed, matching of antenna impedance can be realized, a control signal is generated, the bit controller 6 receives the control signal, and controls the first PIN switch and the second PIN switch to be opened according to the matching network structure and the parameter in the control signal, and the other PIN switches are closed to tune the radio frequency signal of the antenna.
The calculation formula of the PIN switch 4 and the total inductance value is as follows:
Wherein L is the total inductance value, the inductance value of the first PIN switch is 150nH, the inductance value of the second PIN switch is 25nH, the inductance value of the third PIN switch is 50nH, the inductance value of the fourth PIN switch is 100nH, the inductance value of the fifth PIN switch is 200nH, the inductance value of the sixth PIN switch is 400nH, and the inductance value of the seventh PIN switch is 800nH; a represents that the seventh PIN switch is in an open state or a closed state; b represents that the sixth PIN switch is in an open state or a closed state; c represents that the fifth PIN switch is in an open state or a closed state; d represents that the fourth PIN switch is in an open state or a closed state; e represents that the third PIN switch is in an open state or a closed state; f represents the second PIN switch being either open or closed.
Table 1: when PIN switch 4=7, inductance value and PIN switch parameter configuration table
The miniaturized high-efficiency reconfigurable omnidirectional antenna provided by the invention realizes high-efficiency operation of a small-size antenna on a wider frequency band, and solves the problems of large size, narrow frequency band, low efficiency and the like of a conventional broadband ultrashort wave vehicle-mounted antenna. When the antenna is in a working state, each frequency point in the whole bandwidth of the antenna is in a tuning working mode, so that the efficiency is extremely high, and referring to fig. 5, the total height of the miniaturized high-efficiency reconfigurable omnidirectional antenna is only 1m, and the gain is obviously superior to that of a conventional 3.4m medium-fed antenna with the frequency band.
Claims (8)
1. The miniaturized high-efficiency reconfigurable omnidirectional antenna is characterized by comprising an upper radiator (1), a lower radiator (2) and a tuning module (3), wherein the upper radiator (1) is electrically connected with the lower radiator (2);
The tuning module (3) comprises a control unit and a plurality of PIN switches (4), wherein the PIN switches (4) are electrically connected with the control unit, the control unit tunes radio frequency signals of the antenna by controlling one PIN switch (4) or the PIN switches (4), and the control unit is electrically connected with the lower radiator (2);
The PIN switch (4) comprises an inductor (41) and a control switch (42), the inductor (41) and the control switch (42) are connected with the power supply (5), and an antenna bottom feeder is wound into the inductor (41); the control switch (42) is a diode; the inductor (41) is selected by a diode so that the antenna can achieve a plurality of tuning states.
2. A miniaturized high efficiency reconfigurable omnidirectional antenna according to claim 1, wherein the PIN switches (4) are 7 or more.
3. A miniaturized high efficiency reconfigurable omnidirectional antenna according to claim 1 or 2, characterized in that said control unit comprises a bit controller (6) and an MCU controller (7), said MCU controller (7) being electrically connected to the bit controller (6), a plurality of PIN switches (4) being electrically connected to the bit controller (6); the MCU controller (7) receives the control command, changes the matching network structure and parameters according to preset matching network parameters contained in the control command, completes matching of antenna impedance, generates control signals and sends the control signals, and the bit controller (6) receives the control signals and controls one PIN switch (4) or a plurality of PIN switches (4) to be opened or closed according to the control signals so as to tune radio frequency signals of the antenna.
4. A miniaturized high efficiency reconfigurable omnidirectional antenna according to claim 3, wherein the tuning module (3) further comprises a power supply (5), the plurality of power supplies (5) each PIN switch (4) corresponds to a power supply (5), the PIN switches (4) being electrically connected to the bit controller (6) via the power supply (5).
5. A miniaturized high efficiency reconfigurable omnidirectional antenna as in claim 4, wherein the inductance (41) is an adjustable inductance.
6. A miniaturized high efficiency reconfigurable omnidirectional antenna according to claim 5, wherein the PIN switches (4) =7.
7. A miniaturized high efficiency reconfigurable omnidirectional antenna as in claim 1, characterized in that said upper radiator (1) is a metal tube with a diameter of 40-50 mm, the length of said upper radiator (1) being 300-500 mm; the lower radiator (2) is a metal pipe with the diameter of 90-110 mm, and the length of the lower radiator (2) is 500-600 mm.
8. An antenna tuning method based on the miniaturized high efficiency reconfigurable omnidirectional antenna of claim 4, comprising the steps of:
1) The MCU controller (7) receives the control command and determines preset matching network parameters according to the control command;
2) Reading an inductance value and PIN switch parameter configuration table according to the preset matching network parameters in the step 1), modifying the matching network structure and parameters, completing the matching of antenna impedance, generating a control signal and transmitting the control signal;
3) The bit controller (6) receives the control signal and controls one PIN switch (4) or a plurality of PIN switches (4) to be opened or closed according to the matching network structure and parameters in the control signal, so as to tune the radio frequency signal of the antenna.
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| CN202210779434.0A CN115051147B (en) | 2022-07-04 | 2022-07-04 | Miniaturized high-efficiency reconfigurable omnidirectional antenna and antenna tuning method thereof |
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| CN202210779434.0A CN115051147B (en) | 2022-07-04 | 2022-07-04 | Miniaturized high-efficiency reconfigurable omnidirectional antenna and antenna tuning method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096137A (en) * | 1993-03-03 | 1994-12-07 | 西安电子科技大学 | Present whip antenna in the broadband |
| CN101711458A (en) * | 2007-06-07 | 2010-05-19 | 威世科技公司 | Digitally controlled antenna tuning circuit for radio frequency receivers |
| CN112821047A (en) * | 2021-01-04 | 2021-05-18 | 中国人民解放军海军工程大学 | Whip antenna with reconfigurable short-wave broadband frequency |
-
2022
- 2022-07-04 CN CN202210779434.0A patent/CN115051147B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096137A (en) * | 1993-03-03 | 1994-12-07 | 西安电子科技大学 | Present whip antenna in the broadband |
| CN101711458A (en) * | 2007-06-07 | 2010-05-19 | 威世科技公司 | Digitally controlled antenna tuning circuit for radio frequency receivers |
| CN112821047A (en) * | 2021-01-04 | 2021-05-18 | 中国人民解放军海军工程大学 | Whip antenna with reconfigurable short-wave broadband frequency |
Also Published As
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|---|---|
| CN115051147A (en) | 2022-09-13 |
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