CN203690457U - C-band LC bandpass filter - Google Patents
C-band LC bandpass filter Download PDFInfo
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- CN203690457U CN203690457U CN201320799529.5U CN201320799529U CN203690457U CN 203690457 U CN203690457 U CN 203690457U CN 201320799529 U CN201320799529 U CN 201320799529U CN 203690457 U CN203690457 U CN 203690457U
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Abstract
The utility model provides a C-band LC bandpass filter which settles the following problems in a wave filter: complicated structure, large size, high assembling difficulty and low reliability. The following components are successively connected in series between an input port and an output port: a capacitor (1), a capacitor (4), a capacitor (7), a capacitor (10), a capacitor (13), a capacitor (16), a capacitor (18), a capacitor (21), a capacitor (24), a capacitor (27), a capacitor (30) and a capacitor (33). The capacitor (18) is connected with a capacitor (19) in parallel. The capacitor (20) is connected with the capacitor (21) in parallel. The capacitor (24) is connected with a capacitor (25) in parallel. The capacitor (27) is connected with an inductor (28) in parallel. The capacitor (30) is connected with an inductor (31) in parallel. The capacitor (33) is connected with an inductor (34) in parallel. One end of a circuit with a plurality of inductors and capacitors is grounded, and the other end is connected with the circuit provided by the utility model. One end of each of a plurality of capacitors is grounded, and the other end is connected with the circuit provided by the utility model.
Description
technical field:
The utility model is relevant with the filter in the fields such as microwave communication, satellite communication, Aero-Space electronic equipment.
background technology:
Filter is parts crucial in communication system, and due to the frequency selectivity of resonator, the signal of assigned frequency can pass through device, and constant-frequency signal energy is in addition reflected, thereby realizes the function that frequency is selected.
Filter in the market all seldom can be accomplished C-band LC band pass filter, even if there is the shortcoming such as be all that complex structure, volume are large, assembling difficulty, reliability are low.
utility model content:
The purpose of this utility model is to provide one, volume is little, and Insertion Loss is little, and standing wave is little, is easy to manufacture, failure rate is low, safe and reliable C-band LC band pass filter.
The utility model is achieved in that
Input port, first electric capacity 1 of connecting successively between output port, the 3rd electric capacity 4, the 5th electric capacity 7, the 7th electric capacity 10, the 9th electric capacity 13, the 11 electric capacity 16, the 13 electric capacity 18, the 15 electric capacity 21, the 17 electric capacity 24, the 19 electric capacity 27, the 21 electric capacity 30, the 23 electric capacity 33, the 13 electric capacity 18 is in parallel with the 6th inductance 19, the 7th inductance 22 is in parallel with the 15 electric capacity 21, the 17 electric capacity 24 is in parallel with the 8th inductance 25, the 19 electric capacity 27 is in parallel with the 9th inductance 28, the 21 electric capacity 30 is in parallel with the tenth inductance 31, and the 23 electric capacity 33 is in parallel with the 11 inductance 34, the first inductance 2 of series connection, second electric capacity 3 circuit one end ground connection, the other end is connected to the first electric capacity 1, between the 3rd electric capacity 4, the second inductance 5 of series connection, the 4th electric capacity 6 circuit one end ground connection, the other end is connected to the 3rd electric capacity 4, between the 5th electric capacity 7, the 3rd inductance 8 of series connection, the 6th electric capacity 9 circuit one end ground connection, the other end is connected to the 5th electric capacity 7, between the 7th electric capacity 10, the 4th inductance 11 of series connection, the 8th electric capacity 12 circuit one end ground connection, the other end is connected to the 7th electric capacity 10, between the 9th electric capacity 13, the 5th inductance 14 of series connection, the tenth electric capacity 15 circuit one end ground connection, the other end is connected to the 9th electric capacity 13, between the 11 electric capacity 16, the 12 electric capacity 17 one end ground connection, the other end is connected to the 11 electric capacity 16, between the 13 electric capacity 18, the 14 electric capacity 20 one end ground connection, the other end is connected to the 13 electric capacity 18, between the 15 electric capacity 21, the 16 electric capacity 23 one end ground connection, the other end is connected to the 15 electric capacity 21, between the 17 electric capacity 24, the 18 electric capacity 26 one end ground connection, the other end is connected to the 17 electric capacity 24, between the 19 electric capacity 27, the 20 electric capacity 29 one end ground connection, the other end is connected to the 19 electric capacity 27, between the 21 electric capacity 30, the 22 electric capacity 32 one end ground connection, the other end is connected to the 21 electric capacity 30, between the 23 electric capacity 33, the 24 electric capacity 35 one end ground connection, the other end is connected to the 23 electric capacity 33, between output port.
Overall dimension is made: 40mm × 8mm × 8mm, what select is that sheet material, the inductance of polytetrafluoroethylene is the ATC electric capacity of 0805 encapsulation for the air core inductor that is coiled into the enamelled wire of φ 0.31, electric capacity, and when debugging, make inductance reach maximum, what input port, output port were used is the bead of φ 2.5 × 1.8 × 0.5.
The operating frequency of C-band LC band pass filter is: 4300～4800MHz; Out-of-band rejection is: 100～3700MHz >=50dBc, 5000～8000MHz >=40dBc; Insertion Loss≤4.0dB; Standing wave (S11, S22)≤1.5; Adopt: the minimum Ind of the minimum Ind of high pass (elliptic function)+low pass (elliptic function) structure, will make like this waveform more precipitous is that Out-of-band rejection can reach best effect; And overall dimension is made: 40mm × 8mm × 8mm, what select is that sheet material, the inductance of polytetrafluoroethylene is the air core inductor that is coiled into the enamelled wire of φ 0.31, ATC electric capacity with 0805 encapsulation, and Insertion Loss will point like this; And when debugging, the inductance sky of low pass filter air core inductor over there is all turned to and oneself makes inductance reach maximum, so just can make Out-of-band rejection reach best effect; And what joint was used is the bead of φ 2.5 × 1.8 × 0.5.
The utility model Insertion Loss is little, and standing wave is little, be easy to manufacture, failure rate is low, safe and reliable, meet ROHS standard etc.
accompanying drawing explanation:
Fig. 1 is the utility model circuit theory diagrams.
embodiment:
Input port, first electric capacity 1 of connecting successively between output port, the 3rd electric capacity 4, the 5th electric capacity 7, the 7th electric capacity 10, the 9th electric capacity 13, the 11 electric capacity 16, the 13 electric capacity 18, the 15 electric capacity 21, the 17 electric capacity 24, the 19 electric capacity 27, the 21 electric capacity 30, the 23 electric capacity 33, the 13 electric capacity 18 is in parallel with the 6th inductance 19, the 7th inductance 22 is in parallel with the 15 electric capacity 21, the 17 electric capacity 24 is in parallel with the 8th inductance 25, the 19 electric capacity 27 is in parallel with the 9th inductance 28, the 21 electric capacity 30 is in parallel with the tenth inductance 31, and the 23 electric capacity 33 is in parallel with the 11 inductance 34, the first inductance 2 of series connection, second electric capacity 3 circuit one end ground connection, the other end is connected to the first electric capacity 1, between the 3rd electric capacity 4, the second inductance 5 of series connection, the 4th electric capacity 6 circuit one end ground connection, the other end is connected to the 3rd electric capacity 4, between the 5th electric capacity 7, the 3rd inductance 8 of series connection, the 6th electric capacity 9 circuit one end ground connection, the other end is connected to the 5th electric capacity 7, between the 7th electric capacity 10, the 4th inductance 11 of series connection, the 8th electric capacity 12 circuit one end ground connection, the other end is connected to the 7th electric capacity 10, between the 9th electric capacity 13, the 5th inductance 14 of series connection, the tenth electric capacity 15 circuit one end ground connection, the other end is connected to the 9th electric capacity 13, between the 11 electric capacity 16, the 12 electric capacity 17 one end ground connection, the other end is connected to the 11 electric capacity 16, between the 13 electric capacity 18, the 14 electric capacity 20 one end ground connection, the other end is connected to the 13 electric capacity 18, between the 15 electric capacity 21, the 16 electric capacity 23 one end ground connection, the other end is connected to the 15 electric capacity 21, between the 17 electric capacity 24, the 18 electric capacity 26 one end ground connection, the other end is connected to the 17 electric capacity 24, between the 19 electric capacity 27, the 20 electric capacity 29 one end ground connection, the other end is connected to the 19 electric capacity 27, between the 21 electric capacity 30, the 22 electric capacity 32 one end ground connection, the other end is connected to the 21 electric capacity 30, between the 23 electric capacity 33, the 24 electric capacity 35 one end ground connection, the other end is connected to the 23 electric capacity 33, between output port.
Overall dimension is made: 40mm × 8mm × 8mm, what select is that sheet material, the inductance of polytetrafluoroethylene is the ATC electric capacity of 0805 encapsulation for the air core inductor that is coiled into the enamelled wire of φ 0.31, electric capacity, and when debugging, make inductance reach maximum, what input port, output port were used is the bead of φ 2.5 × 1.8 × 0.5.
Claims (2)
1.C wave band LC band pass filter, is characterized in that input port, the first electric capacity (1) of connecting successively between output port, the 3rd electric capacity (4), the 5th electric capacity (7), the 7th electric capacity (10), the 9th electric capacity (13), the 11 electric capacity (16), the 13 electric capacity (18), the 15 electric capacity (21), the 17 electric capacity (24), the 19 electric capacity (27), the 21 electric capacity (30), the 23 electric capacity (33), the 13 electric capacity (18) is in parallel with the 6th inductance (19), the 7th inductance (22) is in parallel with the 15 electric capacity (21), the 17 electric capacity (24) is in parallel with the 8th inductance (25), the 19 electric capacity (27) is in parallel with the 9th inductance (28), the 21 electric capacity (30) is in parallel with the tenth inductance (31), and the 23 electric capacity (33) is in parallel with the 11 inductance (34), first inductance (2) of series connection, the second electric capacity (3) circuit one end ground connection, the other end is connected to the first electric capacity (1), between the 3rd electric capacity (4), second inductance (5) of series connection, the 4th electric capacity (6) circuit one end ground connection, the other end is connected to the 3rd electric capacity (4), between the 5th electric capacity (7), the 3rd inductance (8) of series connection, the 6th electric capacity (9) circuit one end ground connection, the other end is connected to the 5th electric capacity (7), between the 7th electric capacity (10), the 4th inductance (11) of series connection, the 8th electric capacity (12) circuit one end ground connection, the other end is connected to the 7th electric capacity (10), between the 9th electric capacity (13), the 5th inductance (14) of series connection, the tenth electric capacity (15) circuit one end ground connection, the other end is connected to the 9th electric capacity (13), between the 11 electric capacity (16), the 12 electric capacity (17) one end ground connection, the other end is connected to the 11 electric capacity (16), between the 13 electric capacity (18), the 14 electric capacity (20) one end ground connection, the other end is connected to the 13 electric capacity (18), between the 15 electric capacity (21), the 16 electric capacity (23) one end ground connection, the other end is connected to the 15 electric capacity (21), between the 17 electric capacity (24), the 18 electric capacity (26) one end ground connection, the other end is connected to the 17 electric capacity (24), between the 19 electric capacity (27), the 20 electric capacity (29) one end ground connection, the other end is connected to the 19 electric capacity (27), between the 21 electric capacity (30), the 22 electric capacity (32) one end ground connection, the other end is connected to the 21 electric capacity (30), between the 23 electric capacity (33), the 24 electric capacity (35) one end ground connection, the other end is connected to the 23 electric capacity (33), between output port.
2. C-band LC band pass filter according to claim 1, it is characterized in that overall dimension makes: 40mm × 8mm × 8mm, what select is that sheet material, the inductance of polytetrafluoroethylene is the ATC electric capacity of 0805 encapsulation for the air core inductor that is coiled into the enamelled wire of φ 0.31, electric capacity, and when debugging, make inductance reach maximum, what input port, output port were used is the bead of φ 2.5 × 1.8 × 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799529.5U CN203690457U (en) | 2013-12-09 | 2013-12-09 | C-band LC bandpass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799529.5U CN203690457U (en) | 2013-12-09 | 2013-12-09 | C-band LC bandpass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690457U true CN203690457U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320799529.5U Expired - Fee Related CN203690457U (en) | 2013-12-09 | 2013-12-09 | C-band LC bandpass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203690457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429632A (en) * | 2014-09-17 | 2016-03-23 | 常熟市荣兴化纺有限责任公司 | Miniature integrated microwave local oscillator signal generator |
| CN108152686A (en) * | 2017-12-12 | 2018-06-12 | 山东电力设备有限公司 | A kind of low voltage impulse experimental rig of transformer coil |
-
2013
- 2013-12-09 CN CN201320799529.5U patent/CN203690457U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429632A (en) * | 2014-09-17 | 2016-03-23 | 常熟市荣兴化纺有限责任公司 | Miniature integrated microwave local oscillator signal generator |
| CN105429632B (en) * | 2014-09-17 | 2018-11-23 | 江苏先云信息技术有限公司 | The microwave local signal generator of small integrated |
| CN108152686A (en) * | 2017-12-12 | 2018-06-12 | 山东电力设备有限公司 | A kind of low voltage impulse experimental rig of transformer coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20151209 |
|
| EXPY | Termination of patent right or utility model |