CN219350630U - Small-sized combining circuit for navigation antenna signal and 4G antenna signal and antenna unit - Google Patents
Small-sized combining circuit for navigation antenna signal and 4G antenna signal and antenna unit Download PDFInfo
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- CN219350630U CN219350630U CN202320432185.8U CN202320432185U CN219350630U CN 219350630 U CN219350630 U CN 219350630U CN 202320432185 U CN202320432185 U CN 202320432185U CN 219350630 U CN219350630 U CN 219350630U
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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 relates to a small-sized combination circuit for a navigation antenna signal and a 4G antenna signal, which comprises a medium substrate, wherein one surface of the medium substrate is provided with a metal bottom plate, the other surface of the medium substrate is provided with a microstrip circuit, and the microstrip circuit comprises a band-pass filter, a band-stop filter, a direct current path and a combination module. The bandpass filter is implemented using a multimode resonator. The band reject filter employs a lumped filter. The direct current path is connected with the input end of the band-pass filter. The combining module comprises a first output feeder line, a second output feeder line and an input feeder line; one end of the first output feeder line and one end of the second output feeder line are connected with one end of the input feeder line, the other end of the first output feeder line is connected with the output end of the band-pass filter and the other end of the direct current path, and the other end of the second output feeder line is connected with the output end of the band-stop filter. The band-pass filter is realized by adopting the multimode resonator, greatly reduces the volume of the combiner, has the advantage of high performance, and meets the combining requirement of navigation antenna signals and 4G antenna signals.
Description
Technical Field
The utility model relates to the technical field of combining and branching devices of radio frequency signals, in particular to a small-sized combining circuit for a navigation antenna signal and a 4G antenna signal and an antenna unit.
Background
With the progress of communication technology, global satellite positioning and communication systems have been widely used in various fields. At present, the GPS working frequency band is 1574.397MHz-1576.443MHz, the Beidou first-generation satellite navigation system working frequency band is 1558.854MHz-1563.046MHz, the GLONASS satellite navigation system working frequency band is 1598.0625MHz-1605.375MHz, the Galileo satellite navigation system working frequency band is 1559-1592MHz, and a combiner is needed if navigation antenna signals and 4G antenna signals are combined together. However, the current combiner of navigation antenna signals and 4G antenna signals in the market has large general size, and cannot meet the requirement of using multiple system antennas in the market, and needs to be improved.
Disclosure of Invention
Based on this, it is necessary to provide a small-sized combining circuit for navigation antenna signals and 4G antenna signals and an antenna unit, which are required to solve the technical problem that the current combiner in the market is generally large in size and cannot meet the use of multi-system antennas in the market.
The utility model provides a small-sized combination circuit for a navigation antenna signal and a 4G antenna signal, which comprises a medium substrate, wherein one surface of the medium substrate is provided with a metal bottom plate, and the other surface of the medium substrate is provided with a microstrip circuit, and the microstrip circuit comprises:
a band-pass filter implemented with a multimode resonator;
a band reject filter employing a lumped filter;
one end of the direct current path is connected with the input end of the band-pass filter;
the combining module comprises a first output feeder line, a second output feeder line and an input feeder line; one end of the first output feeder line and one end of the second output feeder line are connected with one end of the input feeder line, the other end of the first output feeder line is connected with the output end of the band-pass filter and the other end of the direct current path, and the other end of the second output feeder line is connected with the output end of the band-stop filter.
In a preferred embodiment of the present utility model, the band-pass filter includes a parallel coupling input feeder line, a parallel coupling output feeder line, and a stepped impedance line, two ends of the stepped impedance line are respectively connected to one ends of the parallel coupling input feeder line and the parallel coupling output feeder line, the other end of the parallel coupling output feeder line is connected to the first output feeder line, and a first grounding via hole is provided on the stepped impedance line.
In a preferred embodiment of the present utility model, the band-stop filter includes a first patch capacitor, a first microstrip inductance line, a first microstrip capacitor and a second microstrip capacitor, where the first microstrip inductance line is connected with the second output feeder, the first patch capacitor and the first microstrip capacitor are both disposed at a connection position of the first microstrip inductance line and the second output feeder, the connection position of the second microstrip capacitor and the first microstrip inductance line is provided with a first patch inductor, and the second microstrip capacitor is provided with a second grounding via hole.
In a preferred embodiment of the present utility model, the dc path includes a second microstrip inductance line, two ends of the second microstrip inductance line are respectively connected with the first output feeder line and the parallel coupling input feeder line, and two ends of the second microstrip inductance line are respectively provided with a second patch inductance.
In a preferred embodiment of the present utility model, a second patch capacitor is disposed at an end of the second output feeder near the input feeder.
In a preferred embodiment of the utility model, the passband of the bandpass filter is 1550-1610MHz.
In a preferred embodiment of the present utility model, the stopband of the bandstop filter circuit is 1550-1610MHz.
In a preferred embodiment of the present utility model, the dielectric substrate is made of F4B material.
In a preferred embodiment of the present utility model, the metal base plate is a copper-clad plate.
The utility model also provides an antenna unit which comprises a navigation antenna, a 4G antenna and the small-sized combination circuit of the navigation antenna signal and the 4G antenna signal, wherein the input ends of the navigation antenna and the 4G antenna are respectively connected with the input ends of the band-pass filter and the band-stop filter.
Compared with the prior art, the utility model has the following beneficial effects:
the band-pass filter circuit is realized by adopting the multimode resonator, the volume of the filter is greatly reduced, the frequency can reach 1550MHz-1610MHz, the combination requirement of navigation antenna signals and 4G antenna signals is met, the processing is convenient, the cost is low, the band-pass filter circuit is suitable for batch production and convenient to install, and the band-pass filter circuit can be used in modern communication systems.
Drawings
Fig. 1 is a schematic structural diagram of a small combining circuit for a navigation antenna signal and a 4G antenna signal according to the present embodiment;
FIG. 2 is an S-parameter diagram of a bandpass filter according to an embodiment;
FIG. 3 is an S-parameter diagram of a band reject filter of an embodiment;
fig. 4 is an S-parameter diagram of a band pass filter and a band reject filter in a combiner according to an embodiment.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present embodiment provides a small-sized combination circuit for a navigation antenna signal and a 4G antenna signal, which includes a dielectric substrate made of an F4B material, wherein one surface of the dielectric substrate is provided with a metal bottom plate formed by a copper-clad plate, and the other surface of the dielectric substrate is provided with a microstrip circuit, and the microstrip circuit includes a band-pass filter 1, a band-stop filter 2, a dc path 3 and a combination module 4.
The combiner module 4 is a T-shaped structure comprising a first outgoing feeder 41, a second outgoing feeder 42 and an incoming feeder 43. The first output feeder line 41 and the second output feeder line 42 are both connected with the input feeder line 43, and a second patch capacitor 44 is arranged at one end of the second output feeder line 42, which is close to the input feeder line 43.
The band-pass filter 1 is realized by adopting a multimode resonator, the passband characteristics of the multimode resonator can be independently adjusted, the circuit size of the multimode resonator is small, and the filter designed by the multimode resonator has the advantages of space saving and small insertion loss. The band-pass filter 1 comprises a parallel coupling input feeder line 11, a parallel coupling output feeder line 12 and a stepped impedance line 13, wherein two ends of the stepped impedance line 13 are respectively connected with one ends of the parallel coupling input feeder line 11 and one end of the parallel coupling output feeder line 12, and a first grounding via hole 14 is arranged on the stepped impedance line 13. The other end of the parallel out-coupling feed line 12 is connected to the other end of the first out-coupling feed line 41. The parallel coupling input feeder line 11, the parallel coupling output feeder line 12, the stepped impedance line 13 and the first grounding via hole 14 determine performance indexes of the band-pass filter, including passband frequency, passband bandwidth, zero point and passband insertion loss, and referring to fig. 2, it can be seen that the passband is between 1550MHz and 1610MHz, and the performance of the band-pass filter 1 of this embodiment is well reflected.
The band reject filter 2 employs a lumped filter with a passband of 1550-1610MHz. The band reject filter 2 comprises a first patch capacitance 21, a first microstrip inductance line 22, a first microstrip capacitance 23 and a second microstrip capacitance 24. The first microstrip inductance line 22 is connected to the second output feed line 42, and the second patch capacitor 44 acts as a blocking function so that direct current cannot pass through the band stop filter 2. The first patch capacitor 21 and the first microstrip capacitor 23 are both arranged at the connection position of the first microstrip inductance line 22 and the second output feeder 42. The second microstrip capacitor 24 is connected with the first microstrip inductance line 22, a first patch inductance 25 is arranged at the connection position, and a second grounding via hole 26 is arranged on the second microstrip capacitor 24. The first chip capacitor 21 and the first chip inductor 25 determine performance indexes of the band-stop filter 2, including the stop band frequency and the stop band bandwidth, and referring to fig. 3, it can be seen that the frequency bands outside 1550-1610MHz are pass bands, so that the performance of the band-stop filter 2 is well realized.
The direct current path 3 can only supply power to the navigation antenna signal amplifier by means of a direct current signal. The direct current path 3 comprises a second microstrip inductance line 31, two ends of the second microstrip inductance line 31 are respectively connected with the first output feeder line 41 and the parallel coupling input feeder line 11, and two ends of the second microstrip inductance line 31 are respectively provided with a second patch inductance 32.
Referring to fig. 4, the combiner of the present embodiment allows 4G signals and navigation signals of 1550-1610MHz to pass through, so that the performance of the combiner is well achieved.
The frequency of the embodiment can reach 1550MHz-1610MHz, the combination requirement of navigation antenna signals and 4G antenna signals is met, the band-pass filter circuit is realized by adopting a multimode resonator, the volume of the filter is greatly reduced, the processing is convenient, the cost is low, the device is suitable for batch production and convenient to install, and the device can be used in modern communication systems.
On the basis of the small combination circuit of the navigation antenna signal and the 4G antenna signal, the embodiment also introduces an antenna unit, which comprises a navigation antenna and a 4G antenna, and further comprises the small combination circuit of the navigation antenna signal and the 4G antenna signal, wherein the navigation antenna and the 4G antenna are respectively connected with the input ends of the band-pass filter 1 and the band-stop filter 2 of the combiner.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The utility model provides a small-size compound router of navigation antenna signal and 4G antenna signal, includes the dielectric substrate, and dielectric substrate one side is provided with the metal soleplate and its another side is provided with microstrip circuit, its characterized in that, microstrip circuit includes:
a band-pass filter (1) implemented with a multimode resonator;
a band reject filter (2) that uses a lumped filter;
one end of the direct current path (3) is connected with the input end of the band-pass filter (1);
a combiner module (4) comprising a first outgoing feeder (41), a second outgoing feeder (42) and an incoming feeder (43); the first output feeder line (41) and the second output feeder line (42) are both connected with the input feeder line (43), the first output feeder line (41) is connected with the output end of the band-pass filter (1) and the other end of the direct current path (3), and the second output feeder line (42) is connected with the output end of the band-stop filter (2).
2. The miniature combining circuit for the navigation antenna signal and the 4G antenna signal according to claim 1, wherein the band-pass filter (1) comprises a parallel coupling input feeder line (11), a parallel coupling output feeder line (12) and a stepped impedance line (13), two ends of the stepped impedance line (13) are respectively connected with the parallel coupling input feeder line (11) and the parallel coupling output feeder line (12), the parallel coupling output feeder line (12) is connected with a first output feeder line (41), and a first grounding via hole (14) is arranged on the stepped impedance line (13).
3. The miniature combining circuit for a navigation antenna signal and a 4G antenna signal according to claim 1, wherein the band reject filter (2) comprises a first patch capacitor (21), a first microstrip inductance line (22), a first microstrip capacitor (23) and a second microstrip capacitor (24), the first microstrip inductance line (22) is connected with a second output feeder line (42), the first patch capacitor (21) and the first microstrip capacitor (23) are both arranged at the connection position of the first microstrip inductance line (22) and the second output feeder line (42), the second microstrip capacitor (24) is connected with the first microstrip inductance line (22) and the connection position is provided with a first patch inductor (25), and the second microstrip capacitor (24) is provided with a second grounding via hole (26).
4. The miniature combining circuit for navigation antenna signals and 4G antenna signals according to claim 2, wherein the direct current path (3) comprises a second microstrip inductance line (31), two ends of the second microstrip inductance line (31) are respectively connected with the first output feeder line (41) and the parallel coupling input feeder line (11), and two ends of the second microstrip inductance line (31) are respectively provided with a second patch inductance (32).
5. The miniaturized combiner of navigation antenna signals and 4G antenna signals according to claim 1, wherein the second output feed line (42) is provided with a second patch capacitor (44) at one end close to the input feed line (43).
6. The miniaturized combiner of navigation antenna signals and 4G antenna signals according to claim 1, characterized in that the passband of the bandpass filter (1) is 1550-1610MHz.
7. The miniaturized combiner of navigational antenna signals and 4G antenna signals of claim 1 wherein the stop band of the band reject filter circuit is 1550-1610MHz.
8. The miniaturized combiner of navigational antenna signals and 4G antenna signals of claim 1 wherein the dielectric substrate is fabricated from F4B material.
9. The miniaturized combiner of navigational antenna signals and 4G antenna signals of claim 1 wherein the metal chassis is a copper clad laminate.
10. An antenna unit comprising a navigation antenna and a 4G antenna, and further comprising a miniaturized combination circuit of a navigation antenna signal and a 4G antenna signal according to any one of claims 1-9, wherein the input ends of the navigation antenna and the 4G antenna are connected with the input ends of a band-pass filter (1) and a band-stop filter (2), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320432185.8U CN219350630U (en) | 2023-03-09 | 2023-03-09 | Small-sized combining circuit for navigation antenna signal and 4G antenna signal and antenna unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320432185.8U CN219350630U (en) | 2023-03-09 | 2023-03-09 | Small-sized combining circuit for navigation antenna signal and 4G antenna signal and antenna unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219350630U true CN219350630U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320432185.8U Active CN219350630U (en) | 2023-03-09 | 2023-03-09 | Small-sized combining circuit for navigation antenna signal and 4G antenna signal and antenna unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219350630U (en) |
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2023
- 2023-03-09 CN CN202320432185.8U patent/CN219350630U/en active Active
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