CN219611853U - Microstrip line filter and C-band tuner - Google Patents
Microstrip line filter and C-band tuner Download PDFInfo
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- CN219611853U CN219611853U CN202320048250.7U CN202320048250U CN219611853U CN 219611853 U CN219611853 U CN 219611853U CN 202320048250 U CN202320048250 U CN 202320048250U CN 219611853 U CN219611853 U CN 219611853U
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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 utility model discloses a microstrip line filter and a C-band tuner, wherein the microstrip line filter comprises: the device comprises a signal input end, a band-pass filtering module and a high-pass filtering module; the band-pass filtering module comprises a first signal resonance unit, a second signal resonance unit, a third signal resonance unit and a fourth signal resonance unit which are sequentially arranged, wherein two adjacent signal resonance units are coupled through a common resonance arm; the high-pass filtering module is coupled with the fourth signal resonance unit; the signal input is directly coupled to the first signal resonance unit. The embodiment of the utility model ensures that the microstrip line filter has stronger out-of-band rejection capability by adopting a low-pass filter design and a high-pass filter design, simplifies the structure of the microstrip line filter, reduces the circuit cost and is beneficial to manufacturing an integrated circuit.
Description
Technical Field
The utility model relates to the technical field of filters, in particular to a microstrip line filter and a C-band tuner.
Background
Satellite television has undergone long-term development and popularity, and now has covered the world. With the continuous development of the satellite network technology field, more and more satellite devices are appeared. But different micro devices need the support of micro transmission signals with different frequencies, so that the problems of compact frequency spectrum resources, mutual radiation interference of signals and the like occur. With the increasing number of interference sources, the performance requirements of the frequency down converter are also increasing. Therefore, development of a technique for preventing other signal radiation is particularly important.
In the related art, various band-pass filters are designed on a circuit for interference resistance for a tuner, but the filtering effect of most band-pass filters is not ideal. For example, a series connection of multi-stage band-pass filter circuits in a radio frequency circuit can cause serious attenuation of signals and poor out-of-band rejection capability; while some filters overcome the defect of signal attenuation by adding an amplifying circuit, the circuit cost is increased.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the microstrip filter and the C-band tuner provided by the utility model have the advantages that the microstrip filter has stronger out-of-band rejection capability by adopting a low-pass filter design and a high-pass filter design, meanwhile, the structure of the microstrip filter is simplified, the circuit cost is reduced, and the integrated circuit is facilitated to be manufactured.
In a first aspect, an embodiment of the present utility model provides a microstrip line filter, including:
the band-pass filtering module comprises a first signal resonance unit, a second signal resonance unit, a third signal resonance unit and a fourth signal resonance unit which are sequentially arranged, wherein two adjacent signal resonance units are coupled through a common resonance arm;
a high-pass filtering module coupled with the fourth signal resonance unit;
and a signal input terminal directly coupled to the first signal resonance unit.
The microstrip filter provided by the embodiment of the first aspect of the utility model has at least the following beneficial effects: the microstrip line filter comprises a signal input end, a band-pass filtering module and a high-pass filtering module; the band-pass filtering module comprises a first signal resonance unit, a second signal resonance unit, a third signal resonance unit and a fourth signal resonance unit which are sequentially arranged, wherein two adjacent signal resonance units are coupled through a common resonance arm; the high-pass filtering module is coupled with the fourth signal resonance unit; the signal input is directly coupled to the first signal resonance unit. The microstrip line filter provided by the embodiment of the utility model is not provided with a multistage amplifying circuit, so that the circuit structure is simplified, and the circuit cost is reduced; when the high-frequency signal is input into the microstrip line filter through the signal input end, the band-pass filter module firstly suppresses the high-frequency signal, namely suppresses the out-of-band signal when the out-of-band signal is not amplified, and then further suppresses the out-of-band signal through the high-pass filter module, so that the signal loss is reduced, and meanwhile, the band-pass filter module has a good out-of-band suppression capability. That is, the embodiment of the utility model adopts the low-pass filter design and the high-pass filter design, so that the microstrip filter has stronger out-of-band rejection capability, and meanwhile, the structure of the microstrip filter is simplified, the circuit cost is reduced, and the integrated circuit is facilitated to be manufactured.
According to some embodiments of the utility model, the first signal resonance unit comprises: the first microstrip line horizontal segment, the first resonance arm and the second resonance arm that set up side by side, first resonance arm first microstrip line horizontal segment with the second resonance arm connects gradually and encloses and closes and form the U-shaped accommodation space that the opening up.
According to some embodiments of the utility model, the second signal resonance unit includes: the first microstrip line transverse section, the second resonance arm and the third resonance arm that set up side by side, the second resonance arm the first microstrip line transverse section with the third resonance arm connects gradually and encloses and closes and form opening U-shaped accommodation space down.
According to some embodiments of the utility model, the third signal resonance unit includes: the first microstrip line transverse section, the third resonance arm and the fourth resonance arm that set up side by side, the third resonance arm the first microstrip line transverse section with the fourth resonance arm connects gradually and encloses and closes and form the U-shaped accommodation space that the opening up.
According to some embodiments of the utility model, the fourth signal resonance unit includes: the first microstrip line transverse section, the fourth resonance arm and the fifth resonance arm that set up side by side, the fourth resonance arm the first microstrip line transverse section with the fifth resonance arm connects gradually and encloses and closes and form opening U-shaped accommodation space down.
According to some embodiments of the utility model, each of the signal resonance units comprises: the first microstrip line vertical section is arranged in the U-shaped accommodating space, is perpendicular to the first microstrip line horizontal section and is connected to a first connecting point.
According to some embodiments of the utility model, each signal resonance unit further comprises: the high-pass filtering unit comprises a second microstrip line vertical section arranged outside the U-shaped accommodating space and a second microstrip line horizontal section parallel to the first microstrip line horizontal section, one end of the second microstrip line vertical section is connected with the first connecting point, and the other end of the second microstrip line vertical section is connected with the middle point of the second microstrip line horizontal section.
According to some embodiments of the utility model, the high-pass filtering module comprises: the third microstrip line transverse section, the fourth microstrip line transverse section, the fifth microstrip line transverse section, the sixth microstrip line transverse section and the third microstrip line vertical section parallel to the common resonance arm side by side, wherein the third microstrip line transverse section, the fourth microstrip line transverse section, the fifth microstrip line transverse section and the sixth microstrip line transverse section are respectively perpendicular to the third microstrip line vertical section and correspondingly connected to a second connection point, a third connection point, a fourth connection point and a fifth connection point.
According to some embodiments of the utility model, the microstrip filter further comprises: the signal output end is connected with the high-pass filtering module through the impedance matching unit.
In a second aspect, an embodiment of the present utility model provides a C-band tuner, including a microstrip filter as in the embodiment of the first aspect.
The C-band tuner provided according to the embodiment of the second aspect of the present utility model has at least the following advantageous effects: the C-band tuner comprises a microstrip line filter, wherein the microstrip line filter comprises a signal input end, a band-pass filter module and a high-pass filter module; the band-pass filtering module comprises a first signal resonance unit, a second signal resonance unit, a third signal resonance unit and a fourth signal resonance unit which are sequentially arranged, wherein two adjacent signal resonance units are coupled through a common resonance arm; the high-pass filtering module is coupled with the fourth signal resonance unit; the signal input is directly coupled to the first signal resonance unit. In the C-band tuner provided by the embodiment of the utility model, the microstrip line filter is not provided with a multistage amplifying circuit, so that the circuit structure is simplified, and the circuit cost is reduced; when the high-frequency signal is input into the microstrip line filter through the signal input end, the band-pass filter module firstly suppresses the high-frequency signal, namely suppresses the out-of-band signal when the out-of-band signal is not amplified, and then further suppresses the out-of-band signal through the high-pass filter module, so that the signal loss is reduced, and meanwhile, the band-pass filter module has a good out-of-band suppression capability. That is, the embodiment of the utility model adopts the low-pass filter design and the high-pass filter design, so that the microstrip line filter of the C-band tuner has stronger out-of-band rejection capability, and meanwhile, the structure of the microstrip line filter is simplified, the circuit cost is reduced, and the manufacturing of an integrated circuit is facilitated.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
Fig. 1 is a schematic structural diagram of a microstrip filter according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a microstrip filter according to another embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a bandpass filtering module according to an embodiment of the utility model;
FIG. 4 is a schematic diagram of a first signal resonance unit according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a high-pass filtering module according to an embodiment of the utility model.
Detailed Description
Embodiments of the utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions, such as orientation or positional relationships indicated above, below, etc., are based on the orientation or positional relationships shown in the drawings, are merely for convenience of description of the utility model and to simplify the description, and are not indicative or implying that the apparatus or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In a first aspect, as shown in fig. 1 to 2, an embodiment of the present utility model provides a microstrip line filter 100, including: the signal input end 130, the band-pass filtering module 110 and the high-pass filtering module 120, wherein the band-pass filtering module 110 comprises a first signal resonance unit 111, a second signal resonance unit 112, a third signal resonance unit 113 and a fourth signal resonance unit 114 which are sequentially arranged, and two adjacent signal resonance units are coupled through a common resonance arm; the high pass filter module 120 is coupled to the fourth signal resonance unit 114; the signal input 130 is directly coupled to the first signal resonance unit 111.
The microstrip filter 100 provided according to the embodiment of the first aspect of the present utility model has at least the following advantages: the microstrip line filter 100 includes a signal input 130, a band-pass filter module 110, and a high-pass filter module 120; the band-pass filtering module comprises a first signal resonance unit 111, a second signal resonance unit 112, a third signal resonance unit 113 and a fourth signal resonance unit 114 which are sequentially arranged, wherein two adjacent signal resonance units are coupled through a common resonance arm; the high pass filter module 120 is coupled to the fourth signal resonance unit 114; the signal input 130 is directly coupled to the first signal resonance unit 111. The microstrip line filter 100 provided by the embodiment of the utility model is not provided with a multi-stage amplifying circuit, so that the circuit structure is simplified, and the circuit cost is reduced; when the high-frequency signal is input into the microstrip line filter 100 through the signal input end 130, the band-pass filter module 110 firstly suppresses the high-frequency signal, that is, suppresses the out-of-band signal when the out-of-band signal is not amplified yet, and then further suppresses the out-of-band signal through the high-pass filter module 120, so that the signal loss is reduced, and meanwhile, the band-pass filter module has a better out-of-band suppression capability. That is, the embodiment of the utility model adopts the low-pass filter design and the high-pass filter design, so that the microstrip filter has stronger out-of-band rejection capability, and meanwhile, the structure of the microstrip filter is simplified, the circuit cost is reduced, and the integrated circuit is facilitated to be manufactured.
Specifically, the high-pass filtering module 120 is directly coupled with the fourth signal resonance unit 114 through a microstrip line.
It will be appreciated that the coupling between two adjacent signal resonant cells via a common resonant arm simplifies the structure of the band-pass filter module 110, making the volume compact, and facilitating the reduction of the overall circuit cost of the microstrip filter. It will be appreciated that the number of signal resonating elements in the bandpass filter module may be further extended in such a way that two adjacent signal resonating elements are coupled through a common resonating arm.
As can be appreciated, in the microstrip line filter 100, since the signal input terminal 130 is directly coupled to the first signal resonance unit 111, the band-pass filter module 110 performs out-of-band suppression on the external high-frequency signal when it is just input; then, since the high-pass filtering module 120 is directly coupled to the fourth signal resonance unit 114 of the band-pass filtering module 110, the high-pass filtering module 120 further performs out-of-band rejection on the high-frequency signal, and performs out-of-band rejection on the external signal sequentially by adopting a low-pass filtering design and a high-pass filtering design, thereby having a relatively strong out-of-band rejection capability. Specifically, the microstrip line filter provided by the embodiment of the utility model can realize a high suppression effect of more than 40 dB.
Referring to fig. 2, the microstrip line filter 100 further includes: the signal output terminal 140 and the impedance matching unit 150, the signal output terminal 140 is connected with the high-pass filtering module 120 through the impedance matching unit 150. Specifically, the impedance matching unit 150 includes an impedance transformation line, and the signal output end 140 is connected with the high-pass filtering module 120 in an impedance matching manner through the impedance transformation line, so that signal loss in the radio frequency circuit and the microwave circuit is reduced, and circuit performance is improved.
It can be understood that the impedance matching unit can be obtained by directly coupling a plurality of sections of impedance transformation lines, or by adopting impedance transformation lines with other shapes, and a person skilled in the art can design the shapes and the number of the impedance transformation lines according to actual circuit requirements, so the structural composition of the impedance matching unit is not particularly limited as long as the impedance matching effect can be achieved.
Referring to fig. 1 and 2, according to some embodiments of the present utility model, a first signal resonance unit 111 includes: the first microstrip line transverse section 1111, the first resonant arm 1112 and the second resonant arm 1113 which are arranged side by side, and the first resonant arm 1112, the first microstrip line transverse section 1111 and the second resonant arm 1113 are sequentially connected and enclosed to form a U-shaped accommodating space with an upward opening.
The second signal resonance unit 112 includes: the first microstrip line transverse section 1111, the second resonant arm 1113 and the third resonant arm 1121 which are arranged side by side, and the second resonant arm 1113, the first microstrip line transverse section 1111 and the third resonant arm 1121 are sequentially connected and enclosed to form a U-shaped accommodating space with a downward opening.
The third signal resonance unit 113 includes: the first microstrip line transverse section 1111, the third resonant arm 1121 and the fourth resonant arm 1131 which are arranged side by side, and the third resonant arm 1121, the first microstrip line transverse section 1111 and the fourth resonant arm 1131 are sequentially connected and enclosed to form a U-shaped accommodating space with an upward opening.
The fourth signal resonance unit 114 includes: the first microstrip line transverse section 1111, the fourth resonant arm 1131 and the fifth resonant arm 1141 which are arranged side by side, and the fourth resonant arm 1131, the first microstrip line transverse section 1111 and the fifth resonant arm 1141 are sequentially connected and enclosed to form a U-shaped accommodating space with a downward opening.
It can be understood that the first signal resonance unit 111, the second signal resonance unit 112, the third signal resonance unit 113, and the fourth signal resonance unit 114 constitute a fourth-order signal resonator, and band-pass filters a high-frequency signal when an external high-frequency signal is input.
Specifically, in the band-pass filtering module 110, the second resonant arm 1113, the third resonant arm 1121, and the fourth resonant arm 1131 are common resonant arms, and the first signal resonant unit 111 and the second signal resonant unit 112 are coupled through the common second resonant arm 1113; the second signal resonance unit 112 and the third signal resonance unit 113 are coupled through a common third resonance arm 1121; the third signal resonance unit 113 and the fourth signal resonance unit 114 are coupled through the common fourth resonance arm 1131, so that the circuit structure of the band-pass filter module is simple and compact, the cost of the whole circuit is reduced, and the integrated circuit is facilitated to be manufactured.
Referring to fig. 3, according to some embodiments of the present utility model, each signal resonance unit includes: the first microstrip line vertical section 115 is disposed in the U-shaped accommodating space, and the first microstrip line vertical section 115 is perpendicular to the first microstrip line horizontal section 1111 and connected to the first connection point. In one embodiment, the first connection point is a midpoint of the first microstrip line transverse segment 1111. The structure of the first microstrip line vertical segment 115 can affect the frequency rejection point. Specifically, the length or width of the first microstrip line vertical section 115 may be adjusted by adjusting the tail end of the first microstrip line vertical section 115, so as to adjust the frequency suppression point of the first microstrip line vertical section 115. It can be understood that the length or width of the first microstrip line vertical section can be adjusted according to the performance requirement of the microstrip line filter to obtain the required frequency suppression point, so the length and width of the first microstrip line vertical section are not particularly limited herein.
Referring to fig. 1, 3 and 4, according to some embodiments of the present utility model, each signal resonance unit further includes: the high-pass filtering unit 116, the high-pass filtering unit 116 includes a second microstrip line vertical section 1161 disposed outside the U-shaped accommodating space and a second microstrip line horizontal section 1162 parallel to the first microstrip line horizontal section 1111, one end of the second microstrip line vertical section 1161 is connected with the first connection point, and the other end of the second microstrip line vertical section 1161 is connected with the midpoint of the second microstrip line horizontal section 1162.
It is understood that the high-pass filter unit 116 in each signal resonance unit is in a T shape, and the high-pass filter units 116 in the four signal resonance units form a fourth-order high-pass filter circuit for high-pass filtering the high-frequency signal.
Referring to fig. 5, according to some embodiments of the utility model, the high pass filtering module 120 includes: the third microstrip line transverse section 121, the fourth microstrip line transverse section 122, the fifth microstrip line transverse section 123, the sixth microstrip line transverse section 124 and the third microstrip line vertical section 125 parallel side by side to the common resonance arm, and the third microstrip line transverse section 121, the fourth microstrip line transverse section 122, the fifth microstrip line transverse section 123 and the sixth microstrip line transverse section 124 are respectively connected to the second connection point, the third connection point, the fourth connection point and the fifth connection point perpendicular to the third microstrip line vertical section 125 and correspondingly. It will be appreciated that the presence of the second, third, fourth and fifth connection points divides the third microstrip line riser 125 into a first sub-riser 1251, a second sub-riser 1252, a third sub-riser 1253, a fourth sub-riser 1254 and a fifth sub-riser 1255.
Specifically, in the high-pass filtering module 120, the first sub-vertical section 1251 and the third microstrip line horizontal section 121 constitute a first-order high-pass filtering circuit; the third microstrip line transverse section 121 and the second sub-vertical section 1252 form a second-order high-pass filter circuit; the second sub-vertical section 1252 and the fourth microstrip line horizontal section 122 form a third-order high-pass filter circuit; the fourth microstrip line transverse segment 122 and the third sub-vertical segment 1253 form a fourth-order high-pass filter circuit; the third sub vertical section 1253 and the fifth microstrip line horizontal section 123 form a fifth-order high-pass filter circuit; the fifth microstrip line transverse segment 123 and the fourth sub-vertical segment 1254 form a sixth-order high-pass filter circuit; the fourth sub-vertical section 1254 and the sixth microstrip line horizontal section 124 form a seventh-order high-pass filter circuit; the sixth microstrip line transverse segment 124 and the fifth sub-vertical segment 1255 constitute a high-pass filter circuit of the eighth order. The eight-order high-pass filter circuit is realized, meanwhile, the circuit structure of the high-pass filter module 120 is simple, the volume is compact, the cost of the whole circuit is reduced, and the integrated circuit is facilitated to be manufactured.
Further, referring to fig. 1 and 2, in the first signal resonance unit 111, the first microstrip line vertical section 115 and the first microstrip line 1112 constitute a first-order low-pass filter circuit, and the first microstrip line vertical section 115 and the second resonance arm 1113 constitute a second-order low-pass filter circuit; in the second signal resonance unit 112, the second resonance arm 1113 and the first microstrip line vertical section 115 form a third-order low-pass filter circuit, and the first microstrip line vertical section 115 and the third resonance arm 1121 form a fourth-order low-pass filter circuit; in the third signal resonance unit 113, the third resonance arm 1121 and the first microstrip line vertical section 115 form a fifth-order low-pass filter circuit, and the first microstrip line vertical section 115 and the fourth resonance arm 1131 form a sixth-order low-pass filter circuit; in the fourth signal resonance unit 114, the fourth resonance arm 1131 and the first microstrip line vertical section 115 form a seventh-order low-pass filter circuit, and the first microstrip line vertical section 115 and the fifth resonance arm 1141 form an eighth-order low-pass filter circuit; the fifth resonant arm 1141 and the third microstrip vertical section 125 form a ninth order low pass filter circuit. The microstrip line filter 100 provided by the utility model realizes low-pass filtering through a nine-order low-pass filter circuit, has strong out-of-band rejection capability, and has the advantages of simple structure, compact volume and low circuit cost.
The microstrip filter in the embodiment has stronger out-of-band rejection capability through the low-pass filter design and the high-pass filter design, simplifies the structure of the microstrip filter, reduces the circuit cost and is beneficial to manufacturing an integrated circuit.
In a second aspect, an embodiment of the present utility model provides a C-band tuner including the microstrip filter 100 as in the embodiment of the first aspect.
It can be appreciated that the C-band tuner provided according to the embodiment of the second aspect of the present utility model has at least the following advantageous effects: the C-band tuner comprises a microstrip line filter, wherein the microstrip line filter comprises a signal input end, a band-pass filter module and a high-pass filter module; the band-pass filtering module comprises a first signal resonance unit, a second signal resonance unit, a third signal resonance unit and a fourth signal resonance unit which are sequentially arranged, wherein two adjacent signal resonance units are coupled through a common resonance arm; the high-pass filtering module is coupled with the fourth signal resonance unit; the signal input is directly coupled to the first signal resonance unit. In the C-band tuner provided by the embodiment of the utility model, the microstrip line filter is not provided with a multistage amplifying circuit, so that the circuit structure is simplified, and the circuit cost is reduced; when the high-frequency signal is input into the microstrip line filter through the signal input end, the band-pass filter module firstly suppresses the high-frequency signal, namely suppresses the out-of-band signal when the out-of-band signal is not amplified, and then further suppresses the out-of-band signal through the high-pass filter module, so that the signal loss is reduced, and meanwhile, the band-pass filter module has a good out-of-band suppression capability. That is, the embodiment of the utility model adopts the low-pass filter design and the high-pass filter design, so that the microstrip line filter of the C-band tuner has stronger out-of-band rejection capability, and meanwhile, the structure of the microstrip line filter is simplified, the circuit cost is reduced, and the manufacturing of an integrated circuit is facilitated.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
1. A microstrip line filter, comprising:
the band-pass filtering module comprises a first signal resonance unit, a second signal resonance unit, a third signal resonance unit and a fourth signal resonance unit which are sequentially arranged, wherein two adjacent signal resonance units are coupled through a common resonance arm;
a high-pass filtering module coupled with the fourth signal resonance unit;
and a signal input terminal directly coupled to the first signal resonance unit.
2. The microstrip filter according to claim 1, wherein said first signal resonance unit comprises: the first microstrip line horizontal segment, the first resonance arm and the second resonance arm that set up side by side, first resonance arm first microstrip line horizontal segment with the second resonance arm connects gradually and encloses and closes and form the U-shaped accommodation space that the opening up.
3. The microstrip filter according to claim 2, wherein said second signal resonance unit comprises: the first microstrip line transverse section, the second resonance arm and the third resonance arm that set up side by side, the second resonance arm the first microstrip line transverse section with the third resonance arm connects gradually and encloses and closes and form opening U-shaped accommodation space down.
4. A microstrip filter according to claim 3, wherein said third signal resonance unit comprises: the first microstrip line transverse section, the third resonance arm and the fourth resonance arm that set up side by side, the third resonance arm the first microstrip line transverse section with the fourth resonance arm connects gradually and encloses and closes and form the U-shaped accommodation space that the opening up.
5. The microstrip filter according to claim 4, wherein said fourth signal resonance unit comprises: the first microstrip line transverse section, the fourth resonance arm and the fifth resonance arm that set up side by side, the fourth resonance arm the first microstrip line transverse section with the fifth resonance arm connects gradually and encloses and closes and form opening U-shaped accommodation space down.
6. The microstrip filter according to claim 5, wherein each of said signal resonance units comprises: the first microstrip line vertical section is arranged in the U-shaped accommodating space, is perpendicular to the first microstrip line horizontal section and is connected to a first connecting point.
7. The microstrip filter according to claim 6, wherein each of said signal resonance units further comprises: the high-pass filtering unit comprises a second microstrip line vertical section arranged outside the U-shaped accommodating space and a second microstrip line horizontal section parallel to the first microstrip line horizontal section, one end of the second microstrip line vertical section is connected with the first connecting point, and the other end of the second microstrip line vertical section is connected with the middle point of the second microstrip line horizontal section.
8. The microstrip filter according to claim 1, wherein said high pass filtering module comprises: the third microstrip line transverse section, the fourth microstrip line transverse section, the fifth microstrip line transverse section, the sixth microstrip line transverse section and the third microstrip line vertical section parallel to the common resonance arm side by side, wherein the third microstrip line transverse section, the fourth microstrip line transverse section, the fifth microstrip line transverse section and the sixth microstrip line transverse section are respectively perpendicular to the third microstrip line vertical section and correspondingly connected to a second connection point, a third connection point, a fourth connection point and a fifth connection point.
9. The microstrip filter according to claim 1, wherein said microstrip filter further comprises: the signal output end is connected with the high-pass filtering module through the impedance matching unit.
10. A C-band tuner comprising a microstrip filter as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320048250.7U CN219611853U (en) | 2023-01-06 | 2023-01-06 | Microstrip line filter and C-band tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320048250.7U CN219611853U (en) | 2023-01-06 | 2023-01-06 | Microstrip line filter and C-band tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219611853U true CN219611853U (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320048250.7U Active CN219611853U (en) | 2023-01-06 | 2023-01-06 | Microstrip line filter and C-band tuner |
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| Country | Link |
|---|---|
| CN (1) | CN219611853U (en) |
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2023
- 2023-01-06 CN CN202320048250.7U patent/CN219611853U/en active Active
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