CN112563733A - High-frequency radiation unit and compact dual-band antenna - Google Patents
High-frequency radiation unit and compact dual-band antenna Download PDFInfo
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- CN112563733A CN112563733A CN202011425895.5A CN202011425895A CN112563733A CN 112563733 A CN112563733 A CN 112563733A CN 202011425895 A CN202011425895 A CN 202011425895A CN 112563733 A CN112563733 A CN 112563733A
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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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
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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
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more 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
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model provides a high frequency radiation unit and compact dual-band antenna, high frequency radiation unit includes oscillator pair and backup pad, one of them face of backup pad has two parallel striplines, the another side has the feeder line of connecting the oscillator pair, two stripline upper ends connect two symmetrical oscillators in a set of oscillator pair respectively, the antenna reflector is connected to the lower extreme, still be equipped with two sets of filter circuit that correspond with two stripline respectively in the backup pad, every filter circuit of group all includes the first conductor wire of connecting the stripline and the second conductor wire of connecting the antenna reflector, first conductor wire sets up the one side that is equipped with two striplines in the backup pad, the second conductor wire is through its and the gap coupling between the first conductor wire, perhaps couple with first conductor wire through other metal component. The filter circuit, the original feed circuit and the high-frequency oscillator jointly form a suppression system to eliminate the influence of the high-frequency array on the low-frequency array, and the high-frequency array has small impedance matching influence and does not influence the gain of the high-frequency array.
Description
Technical Field
The invention relates to a mobile communication antenna, in particular to a high-frequency radiation unit and a compact dual-band antenna.
Background
With the development of mobile communication technology, when a dual-polarized base station antenna is established, multiple frequency bands are required to be covered, and a system with multiple systems is supported. Because the multiple frequency bands are far apart, two or more different antennas are often required to cover different frequency bands. A more commonly used base station antenna array includes two radiation units covering 698-960 MHz and 1710-2690 MHz bands, respectively. As shown in fig. 1, the two radiating elements form a three-column antenna array, which is disposed crosswise. With the increasing demand for miniaturization of antennas, the spacing between the low-frequency and high-frequency radiating arrays is continuously reduced, so that the coupling between the two radiating arrays is increased, and the antenna performance is affected, including the deterioration of the S parameter and the distortion of the directional diagram.
Generally, the influence of the low-frequency array with a larger size on the performance of the high-frequency array is particularly serious, and the problem is widely concerned. In engineering design, the existing reliable method is generally to add a choke coil for suppressing high-frequency current on a low-frequency antenna, or to use a spiral array arm with a choke effect, so as to weaken high-frequency induced current on a low-frequency array, and to some extent, to avoid the radiation pattern of the high-frequency array from being damaged, for example, CN107078390A, CN107743665A, and CN 110890623A.
Meanwhile, in the dual-band array, the influence of the high-frequency array on the performance of the low-frequency array is ignored because the influence is relatively small. However, when the coverage bandwidths of the low-frequency and high-frequency arrays are wide (for example, when the coverage bandwidths of 698-. Although there is some work today, filtering structures have been added to high frequency antennas to reduce coupling between high and low frequencies. However, the starting point of these designs is to reduce S21 of the high-frequency and low-frequency arrays, and this high-frequency filtering structure mainly filters the energy input from the high-frequency array feed port, cannot cope with the energy radiated from the low-frequency array, and can only reduce the low-frequency electromagnetic waves radiated by the high-frequency array itself. In the dual-band array, the influence mechanism of the high-frequency array on the performance of the low-frequency array is that the high-frequency array absorbs and scatters electromagnetic waves radiated by the low-frequency array, so that the performance of the low-frequency array is influenced. Therefore, the structure can not solve the problems of low-frequency array directional diagram distortion and gain reduction caused by the influence of the high-frequency array on the performance of the low-frequency array.
Disclosure of Invention
The present invention is to overcome the above-mentioned drawbacks, and provides a high frequency radiating element and a compact dual-band antenna.
The technical scheme adopted by the invention for solving the technical problems is as follows: a low-scattering high-frequency radiation unit comprises one or two groups of oscillator pairs, each group of oscillator pairs is supported by a supporting plate, printed circuits are arranged on two sides of the supporting plate, wherein the printed circuit on one side has two parallel strip lines, the printed circuit on the other side has a feed line connecting the pair of transducers, the upper ends of the two strip lines are respectively connected with two symmetrical vibrators in a group of vibrator pairs, the lower ends of the two strip lines are used for connecting an antenna reflector, two groups of filter circuits are arranged on the supporting plate, the two groups of filter circuits respectively correspond to the two strip lines, each group of filter circuits comprises a first conductive wire connected with the strip lines and a second conductive wire used for connecting the antenna reflector, the first conductive wire is arranged on one surface of the support plate provided with the two strip-shaped wires, and the second conductive wire is coupled with the first conductive wire through a gap between the first conductive wire and the second conductive wire, or the second conductive wire is coupled with the first conductive wire through another metal element.
The second conductive wire and the first conductive wire are arranged on the same side of the support plate, and the second conductive wire is coupled with the first conductive wire through a gap between the second conductive wire and the first conductive wire.
The first conductive line is provided with a horizontal section and a vertical section which are connected, the horizontal section of the first conductive line is connected with the upper end of the strip line, and the vertical section extends downwards from the horizontal section and is coupled with the second conductive line or another conductive line through a gap.
The second conductive wire and the first conductive wire are respectively arranged on two sides of the supporting plate, the metal elements are two metal sheets respectively arranged on two sides of the supporting plate, and the first conductive wire and the second conductive wire are respectively connected with the two metal sheets and are coupled through the two metal sheets.
The low-scattering high-frequency radiation unit comprises two groups of vibrator pairs which are arranged in a mutually perpendicular mode, and two supporting plates corresponding to the two groups of vibrator pairs are arranged in a mutually perpendicular mode.
The feeder line is in a 'Gamma' shape, and the upper end of the feeder line is connected with the oscillator pair.
One of the two strip lines is in a gradual structure with gradually changed width.
The filter circuit exhibits a high impedance, which is approximately an open circuit, in the high-frequency operating band of the high-frequency antenna.
A compact dual-band antenna with the low-scattering high-frequency radiation unit comprises a reflector and one or more columns of low-frequency radiation units arranged on the reflector, wherein one or more columns of the high-frequency radiation units are also arranged on the reflector.
Furthermore, the high-frequency radiating elements of the adjacent columns are uniformly distributed around the low-frequency radiating elements, and the spacing between the radiating elements in each column is 0.5-1 times of the wavelength at the central frequency of the working frequency band.
The invention has the beneficial effects that: the added filter circuit, the original feed circuit of the high-frequency radiation unit and the high-frequency oscillator jointly form a suppression system to eliminate the influence of the high-frequency array on the low-frequency array, and parallel resonance can be formed near the central frequency point of the low-frequency band, so that the influence of the high-frequency array on the performance of the low-frequency array is ensured to be minimum. The added filter circuit and the high-frequency radiation unit balun are arranged in parallel and can be directly arranged on the medium supporting plate, and compared with the mode that the filter circuit is connected in series at the ground end of the balun, an additional circuit does not need to be added on the floor, the influence on the adjacent high-frequency radiation unit is avoided, and the wiring is more facilitated. The method has small influence on the impedance matching of the high-frequency array, and does not influence the transmission of high-frequency current, the gain of the high-frequency array and other performances.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a compact dual-band antenna.
Fig. 2 is a block diagram of an embodiment of a portion of a detail of a compact dual band antenna.
Fig. 3 is a side view of an example of the high-frequency radiating element of the present invention.
Fig. 4 is an equivalent circuit diagram of the coupling of the high-frequency radiating element and the low-frequency radiating element at low frequency without adding a filter circuit.
FIG. 5 is a schematic diagram of the present invention for attenuating the effect of a high frequency array on a low frequency array.
Fig. 6 is an equivalent circuit diagram of the embodiment of fig. 3 in which the high frequency radiation unit and the low frequency radiation unit are coupled at a low frequency.
Fig. 7 is a side view of another example of the high-frequency radiating element of the present invention.
Fig. 8 is an equivalent circuit diagram of the embodiment of fig. 7 in which the high frequency radiation unit and the low frequency radiation unit are coupled at a low frequency.
Figure 9 is a gain comparison of one of the polarizations as simulated in several cases.
FIG. 10 is a comparison of S11 for one of the polarizations in the simulation for several cases.
The labels in the figure are: 1. reflector, 2, low frequency array, 3, high frequency array, 4, high frequency array, 5, low frequency radiating element, 51a, array arm, 51b, array arm, 52a, low frequency oscillator support plate, 52b, low frequency oscillator support plate, 6, high frequency radiating element, 61a, oscillator pair, 61b, oscillator pair, 62a, support plate, 62b, support plate, 63a, first strip line, 63a ', second strip line, 64a, feed line, 65a, first conductive line, 65 a', first conductive line, 66a, second conductive line, 66a ', second conductive line, 67a, metal sheet, 675 a', metal sheet.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 schematically shows a compact multi-band antenna according to the invention, comprising a reflector 1 and arranged thereon a single low-frequency array 2 and two single high- frequency arrays 3, 4, each array comprising at least two radiating elements. The number of columns of the low-frequency radiating units and the high-frequency radiating units is set according to the performance requirement of the antenna, and one column or multiple columns can be set. Optionally, the high-frequency radiating elements 6 of two adjacent columns of high-frequency arrays are uniformly distributed around the low-frequency radiating element 5. Adjacent radiating elements in each array are spaced 0.5-1 times the wavelength at the center frequency of the operating band.
The low and high band radiating elements described above may be utilized in a multi-band dual polarized cellular base station antenna. Optionally, the low frequency array operates in the 698-960 MHz frequency band; the high frequency array operates in the 1710-2690 MHz frequency band. The invention is not limited to these particular frequency bands and may be used in other multi-band configurations.
Fig. 2 schematically shows a part of an embodiment of the compact multi-band antenna according to the invention, comprising a reflector 1 and one low-frequency radiating element 5 and four high-frequency radiating elements 6 arranged on the reflector. Four high frequency radiating elements 6 are distributed at intervals around the low frequency radiating element.
The low-frequency radiation unit comprises one or two supporting plates, and one or two oscillator pairs are electrically connected to the upper parts of the supporting plates. If the supporting plates and the array pairs are two groups, the two supporting plates are perpendicular to each other, and the two array pairs are perpendicular to each other.
As shown in fig. 2, the low frequency radiating element 5 includes two mutually perpendicular array pairs 51a and 51b, and two mutually perpendicular low frequency oscillator support plates 52a and 52 b. Here the pair of elements 51a and 51b are radiators, providing radiation of two polarizations. The low frequency oscillator support plates 52a and 52b are double-sided with printed circuitry for feeding both oscillator pairs. In this example, the low-frequency radiating unit adopts a barrel-shaped array provided with a spiral slit, so that the influence on the performance of the high-frequency array can be reduced. It should be noted that the main content of the present invention is a high-frequency radiation unit with low scattering, and the choice of the low-frequency radiation unit is not limited to the one of the embodiment.
The high-frequency radiation unit comprises one group or two groups of oscillator pairs, and the lower part of each group of oscillator pairs is supported by a supporting plate. If the supporting plates and the array pairs are two groups, the two supporting plates are perpendicular to each other, and the two groups of electron pairs are perpendicular to each other.
As shown in fig. 2, the high-frequency radiating unit 6 includes two mutually perpendicular array pairs 61a and 61b, and two mutually perpendicular support plates 62a and 62 b. Here the pair of elements 61a and 61b are radiators, providing radiation of two polarizations. The support plates 62a and 62b are double-sided with printed circuitry for feeding the two array pairs.
In the array structure shown in fig. 2, when the low-frequency radiating elements and the high-frequency radiating elements are closely spaced, the high-frequency radiating elements and the low-frequency radiating elements are mutually affected. The influence of the low-frequency radiating element on the high-frequency radiating element can be reduced to a certain extent by using the low-frequency radiating element 5 with the structure, but the problem of the influence of the high-frequency radiating element on the low-frequency radiating element cannot be solved. To better illustrate its operating principle, fig. 4 provides an equivalent circuit diagram of the coupling between the high and low frequency arrays at the low frequency operating band in the normal case. Wherein the coupling of the array arms 51a, 51b of the low-frequency radiating element 5 and the array pairs 61a, 61b of the high-frequency radiating element 6 is equivalent to a capacitor C1; the coupling between the high- frequency array pair 61a, 61b and the reflector 1 is equivalent capacitance C2; a part 63a, 63 a' of the feeding circuit of the high-frequency radiating element is equivalent to L1. Without an additional filter circuit, the parallel circuit of L1 and C2 forms a series resonance with C1 at a certain frequency point of the low-frequency operating band, causing short circuit between the low-frequency radiating element 5 and the reflector 1, thereby greatly affecting the pattern and gain of the low-frequency radiating element 5 near the frequency point. This is the main mechanism by which the high frequency radiating element affects the performance of the low frequency radiating element.
The influence of the high-frequency radiating element on the low-frequency array needs to be eliminated by the high-frequency radiating element 6 in the invention. Referring to fig. 5, in order to avoid short-circuiting the low frequency radiating element 5 with the reflector 1 via the high frequency radiating element 6 in the low frequency operating band, thereby affecting the performance thereof. An additional impedance Z is introduced between the radiators 6a, 6b of the high-frequency radiating element and the reflector 1RAnd the frequency point generated by the original series resonance is shifted out of the low-frequency working band, so that the influence of the high-frequency radiation unit on the low-frequency radiation unit is weakened.
Preferably, in one embodiment, we set ZRThe L1 and C2 form parallel resonance near the central frequency point of the low-frequency band, so that the low-frequency array cannot be short-circuited with the ground through the coupling with the high-frequency array and the balun of the high-frequency array, and the influence of the high-frequency radiating unit on the performance of the low-frequency radiating unit is ensured to be minimum. Preferably, ZRThe impedance exhibited in the high-frequency operating band should be high, approximately open-circuited, so that the impedance matching of the high-frequency radiating element itself is less affected.
Fig. 3 shows a side view of the high-frequency radiating unit 6, which is the main aspect of the present invention. As shown in the drawing, both sides of one support plate 62a of the high-frequency radiating unit are printed with conductive circuits. On one of the sides, a r-shaped feed line 64a (located on the rear side in fig. 3, indicated by a dashed line) is printed, the feed line 64a being connected to the pair of elements for feeding. On the other side, parallel strip lines, i.e. a first strip line 63a and a second strip line 63 a', are printed (since the strip lines are not purely straight lines, it is understood that parallel as described herein refers to parallel in direction). The strip lines 63a and 63 a' are electrically connected at their lower ends to the reflector 1 and at their upper ends to the two dipoles of the group 61 a. The strip lines 63a and 63 a' and the feed line 64a constitute a conventional package of half-wave arraysIncluding the feed circuit of the balun. Optionally, 63a is provided as a progressive structure to facilitate impedance matching. In addition, two sets of filter circuits are provided on the support plate 62a to provide the required impedance ZR. Two sets of filter circuits correspond to the two strip lines 63a and 63 a', respectively. The filter circuit, a feed circuit of the high-frequency radiation unit and the high-frequency oscillator jointly form a low-frequency suppression system for eliminating the influence of the high-frequency array on the low-frequency array, and the filter circuit does not influence the transmission of high-frequency current and the performance of the high-frequency array.
In the embodiment shown in fig. 3, the two sets of filter circuits are formed by conductive wires, and respectively correspond to the two strip lines, and each set of filter circuits includes a first conductive wire and a second conductive wire. In this embodiment, taking one set of filter circuits as an example, the first conductive line 65a and the second conductive line 66a are located on the same side of the supporting board 62a, and are both disposed on the side of the supporting board 62a where the strip lines 63a and 63 a' are disposed. The first conductive line 65a is connected to the first strip line 63a, the second conductive line 66a is connected to the antenna reflector 1, and the first conductive line 65a and the second conductive line 66a are coupled through a gap therebetween. The other filter circuit group has the same structure, one end of a first conductive line 65a 'printed on the support board is electrically connected with the strip line 63 a', the other end is coupled with a second conductive line 66a 'through a small gap, and the second conductive line 66 a' is connected with the antenna reflector. The conductive lines 65a, 66a, 65a ', 66 a' collectively provide La and Ca required in fig. 4, and constitute a high-frequency filter circuit in the present invention. The structure on the other support plate 62b of the high-frequency radiating unit is similar to that on 62a shown in fig. 3.
Fig. 3 shows an optimized circuit arrangement in which a first conductive line 65a printed on the support board has a horizontal segment electrically connected to the upper end of the strip line 63a at one end and a vertical segment connected to the vertical segment at the other end, the vertical segment extends downward from the horizontal segment and is coupled to a second conductive line 66a through a small gap, and the second conductive line 66a is connected to the antenna reflector.
In the embodiment shown in FIG. 3, two metal lines 65a, 66a (or 65a ', 66 a') are used to provide La and Ca (see FIG. 6) for the formationImpedance Z ofR. The inductance La of the filter circuit shown in fig. 6 can be adjusted by adjusting the length and width of the microstrip lines 65a and 65a ', and the capacitance Ca of the filter circuit shown in fig. 6 can be adjusted by adjusting the lengths of 66a and 66a ' and the distances from 65a and 65a '. By adjusting the parameters, the filter circuit can be combined with different forms of the array 61a, so that the filter circuit can adapt to different antenna array implementation modes, the suppression of high-frequency array sub-units in the array on low-frequency induced current is realized, and the influence on the low-frequency array is avoided. Therefore, the invention is not limited to the embodiment of the high frequency array shown in fig. 2, and for other high frequency array elements with similar structure and affecting the S-parameters and patterns of the low frequency array in the base station array, the filter circuit proposed in the invention can be combined with the high frequency array elements by fine tuning their own structure.
In the embodiment shown in fig. 3, the first conductive line 65a or 65a 'extends downward for a longer length and is coupled to substantially the entire second conductive line 66a or 66 a', and the equivalent circuit thereof is as shown in fig. 6. The portion of the first conductive line 65a or 65a 'extending downward may be coupled with only a portion of the second conductive line 66a or 66 a', and the equivalent circuit may be varied accordingly.
Fig. 7 shows another embodiment of the high-frequency radiation unit filter circuit. In this embodiment, each set of filter circuits also includes a first conductive line and a second conductive line, but the first conductive line and the second conductive line are disposed on opposite sides of the support plate, respectively. Taking one of the filter circuits as an example, the first conductive line 65a is provided on the side of the support plate 62a where the strip lines 63a and 63 a' are provided, and the first conductive line 65a is connected to the first strip line 63 a. The second conductive line 66a is provided on the other side of the support plate 62a, and the lower end thereof is connected to the antenna reflector 1. In this embodiment, the filter circuit further includes a metal member in the form of two metal plates, which are respectively located on both sides of the support plate 62a, and the first conductive line and the second conductive line are respectively connected to and coupled through the two metal plates. The other group of filter circuits has the same structure.
Fig. 8 is an equivalent circuit of the embodiment of fig. 7 coupled at low frequency. The first conductive line 65a and the second conductive line 66a are used respectivelyTo form La1 and La2, two coupled metal sheets are used to provide Ca, the equivalent circuit is a series circuit of La1, La2 and Ca, thereby providing the required impedance ZR。
It should be noted that other similar structures may be used to provide the desired impedance ZRFor example, the metal elements in the form of two metal sheets shown in fig. 7 are changed to other forms, or the first conductive line 65a and the second conductive line 66a are respectively coupled to one metal element, or the like.
Fig. 9 and 10 show the gain and S-parameter of one of the polarizations when the low frequency radiating element is simulated alone, when the low frequency radiating element is simulated together with the high frequency radiating element without the filter circuit, and when the low frequency radiating element is simulated together with the high frequency radiating element with the filter circuit in the present invention. With the same layout of the radiating elements, fig. 9 shows that the gain of the low-frequency antenna is substantially stabilized at around 8dBi using the high-frequency filtering unit of the present invention. And the lowest gain of the low-frequency array can be reduced to about 3dBi under the condition of using the conventional high-frequency unit. It can be seen from the figure that after using the filtering oscillator of the present invention as the high frequency radiating element, the gain of the low frequency radiating element can be fully recovered and S11 is not affected much.
Claims (9)
1. The utility model provides a low scattering high frequency radiation unit, includes a set of or two sets of oscillator pairs, every group oscillator pair below is supported by a backup pad, all is equipped with printed circuit at the two sides of backup pad, and the printed circuit of one side wherein has the stripline of two parallels, and the printed circuit of another side has the feeder line of connecting the oscillator pair, two strip stripline upper ends connect two dipoles in a set of oscillator pair respectively, the lower extreme is used for connecting antenna reflector, its characterized in that: the antenna reflector is characterized in that two groups of filter circuits are further arranged on the supporting plate, the two groups of filter circuits respectively correspond to the two strip-shaped lines, each group of filter circuits comprises a first conductive wire connected with the strip-shaped lines and a second conductive wire used for being connected with the antenna reflector, the first conductive wire is arranged on one surface, provided with the two strip-shaped lines, of the supporting plate, and the second conductive wire is coupled with the first conductive wire through a gap between the first conductive wire and the second conductive wire or coupled with the first conductive wire through another metal element.
2. A low-scattering high-frequency radiation unit according to claim 1, wherein: the second conductive wire and the first conductive wire are arranged on the same side of the support plate, and the second conductive wire is coupled with the first conductive wire through a gap between the second conductive wire and the first conductive wire.
3. A low-scattering high-frequency radiation unit according to claim 2, wherein: the first conductive wire is provided with a horizontal section and a vertical section which are connected, the horizontal section of the first conductive wire is connected with the upper end of the strip line, and the vertical section extends downwards from the horizontal section and is coupled with the second conductive wire through a gap.
4. A low-scattering high-frequency radiation unit according to claim 1, wherein: the second conductive wire and the first conductive wire are respectively arranged on two sides of the supporting plate, the metal elements are two metal sheets respectively arranged on two sides of the supporting plate, and the first conductive wire and the second conductive wire are respectively connected with the two metal sheets and are coupled through the two metal sheets.
5. A low-scattering high-frequency radiation unit according to claim 1, wherein: the feeder line is in a 'Gamma' shape, and the upper end of the feeder line is connected with the oscillator pair.
6. A low-scattering high-frequency radiation unit according to claim 1, wherein: one of the two strip lines is in a gradual structure with gradually changed width.
7. A low-scattering high-frequency radiation unit according to claim 1, wherein: the filter circuit exhibits a high impedance, which is approximately an open circuit, in the high-frequency operating band of the high-frequency antenna.
8. A compact dual band antenna having the low scattering high frequency radiating element of any one of claims 1 to 7, characterized in that: the high-frequency radiating device comprises a reflector and one or more columns of low-frequency radiating units arranged on the reflector, wherein one or more columns of high-frequency radiating units are also arranged on the reflector.
9. A compact dual band antenna according to claim 8, wherein: the high-frequency radiating elements of adjacent columns are uniformly distributed around the low-frequency radiating elements, and the spacing between the radiating elements in each column is 0.5-1 times of the wavelength at the central frequency of the working frequency band.
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| CN202011425895.5A CN112563733B (en) | 2020-12-09 | 2020-12-09 | High-frequency radiating element and compact dual-band antenna |
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| CN202011425895.5A CN112563733B (en) | 2020-12-09 | 2020-12-09 | High-frequency radiating element and compact dual-band antenna |
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| CN112563733B CN112563733B (en) | 2023-08-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113506981A (en) * | 2021-07-15 | 2021-10-15 | 广东工业大学 | Low-scattering antenna and multi-frequency antenna array thereof |
| CN115313065A (en) * | 2022-09-29 | 2022-11-08 | 微网优联科技(成都)有限公司 | Common-caliber base station antenna array |
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| CN113506981A (en) * | 2021-07-15 | 2021-10-15 | 广东工业大学 | Low-scattering antenna and multi-frequency antenna array thereof |
| CN113506981B (en) * | 2021-07-15 | 2022-11-01 | 广东工业大学 | Low-scattering antenna and multi-frequency antenna array thereof |
| CN115313065A (en) * | 2022-09-29 | 2022-11-08 | 微网优联科技(成都)有限公司 | Common-caliber base station antenna array |
| CN115313065B (en) * | 2022-09-29 | 2023-01-03 | 微网优联科技(成都)有限公司 | Common-caliber base station antenna array |
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| CN112563733B (en) | 2023-08-08 |
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