CN209313825U - A kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance - Google Patents
A kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance Download PDFInfo
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- CN209313825U CN209313825U CN201920246129.9U CN201920246129U CN209313825U CN 209313825 U CN209313825 U CN 209313825U CN 201920246129 U CN201920246129 U CN 201920246129U CN 209313825 U CN209313825 U CN 209313825U
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Abstract
The utility model discloses a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance, including the metal base plate, medium substrate and microstrip structure being cascading from the bottom up；Microstrip structure includes determining resistance type amplitude equalizer circuit and parallel connection RLC resonance circuit by the way that 50 ohm of matching microstrip lines are concatenated；Determining resistance type amplitude equalizer circuit includes two adjustable LC resonance circuits, two mechanical adjustable resistance and two fixed resistances；RLC resonance circuit in parallel includes an adjustable resistance and an adjustable LC resonance circuit.A kind of Wideband adjustable gain balanced device based on mechanical adjustable resistance capacitance provided by the utility model, on the one hand desired working band and equilibrium quantity can be fast implemented by mechanical adjustable resistance capacitance, debug time is greatly reduced, on the other hand, by adjusting the resonance frequency and Insertion Loss size of parallel connection RLC resonance circuit, it can solve the problems, such as that gain is excessively high at certain a bit of working frequency in wideband working range.
Description
Technical field
The utility model belongs to Wideband Equalizer technical field, and in particular to a kind of width based on mechanical adjustable resistance capacitance
Band adjustable gain balanced device.
Background technique
When many equipment such as radar transmitter and electronic jammers use microwave vacuum pipe, it is desirable that in equal excitation working condition
Lower output-power fluctuation is smaller, since the exciting power of each frequency point in microwave vacuum pipe is often different, there is very big gain
Fluctuation solves the problems, such as that this relatively good method is plus amplitude equalizer, amplitude equalizer have had been used up each frequency at present
Radar emission system in, play great role improving vacuum tube aspect of performance, but wherein most is narrowband, closely
Nian Lai also increasingly increases the research of band amplitude balanced device, band amplitude balanced device is main with the application of broad-band TWT
Applied in broadband receiving system, low frequency end Insertion Loss is big and feature that front end Insertion Loss is small, can just make up broadband reception
Machine low side high gain and this low characteristic of high-end gain, so as to be effectively improved the flatness of broadband receiver gain.It is common
Balanced device often built by the capacitance-resistance sense of value fixation, needs are constantly removed, are welded when debugging, the consuming time
It is longer.
In addition, in practical engineering applications, it is found that the amplitude-frequency characteristic of common amplitude equalizer and broadband receiver
It is not ideal linearity, even if therefore being sometimes inserted into these common balanced devices, broadband receiver in broadband receiver
Certain a bit of frequency at gain still can be excessively high, to influence the gain flatness in entire working frequency range.Therefore, it designs
A kind of band amplitude balanced device can be convenient debugging and adjustable gain has very real meaning.
Utility model content
It is built to solve common balanced device of the existing technology by the capacitance-resistance sense of value fixation, when debugging needs
It constantly removed, welded, the amplitude-frequency characteristic for expending time longer and common amplitude equalizer and broadband receiver is equal
It is not ideal linearity, causes the gain at certain a bit of frequency of broadband receiver still can be excessively high, to influences entire work
Make the problem of stating of the gain flatness in frequency range, the utility model aim is to provide a kind of based on mechanical adjustable resistance capacitance
Wideband gain adjustable equalizer.
The technology employed by the present utility model is
A kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance, including be cascading from the bottom up
Metal base plate, medium substrate and microstrip structure；
The microstrip structure includes that microstrip line is concatenated to determine resistance type amplitude equalizer circuit and parallel connection RLC resonance by matching
Circuit；
It is described to determine resistance type amplitude equalizer circuit including being connected on the first metalized ground hole and the second metalized ground hole
Between the first adjustable LC resonance circuit, one end connect the first adjustable LC resonance circuit the first mechanical adjustable resistance, after series connection
It is fixed that one end is connected with input matching microstrip line, the first fixed resistance that the other end is connect with parallel connection RLC resonance circuit and second
Resistance, the second adjustable LC resonance circuit that one end connection input matching microstrip line and the other end are connect with parallel connection RLC resonance circuit,
And the second mechanical adjustable resistance that one end connection input matching microstrip line and the other end are connect with parallel connection RLC resonance circuit, the
The other end of one mechanical adjustable resistance is connected to the node between the first fixed resistance and the second fixed resistance；
One end of the parallel connection RLC resonance circuit and determine resistance type amplitude equalizer circuit connection and the other end is connected with output
Microstrip line is matched, RLC resonance circuit in parallel includes the adjustable LC resonance circuit of third and third mechanical adjustable resistance in parallel.
A kind of Wideband adjustable gain balanced device based on mechanical adjustable resistance capacitance provided by the utility model, a side
Face can fast implement desired working band and equilibrium quantity by mechanical adjustable resistance capacitance, and debug time is greatly reduced,
On the other hand, it by adjusting the resonance frequency and Insertion Loss size of parallel connection RLC resonance circuit, can solve a certain in wideband working range
The excessively high problem of gain at segment working frequency.
Based on the above technical solution, the described first adjustable LC resonance circuit includes being connected on the first metalized ground
The first fixed inductance and the first mechanical adjustable capacitor between hole and the second metalized ground hole, the one of the first mechanical adjustable resistance
Node between end the first fixed inductance of connection and the first mechanical adjustable capacitor；
The second adjustable LC resonance circuit include series connection after one end connection input matching microstrip line and the other end with it is in parallel
The second fixed inductance and the second mechanical adjustable capacitor of RLC resonance circuit connection；
The adjustable LC resonance circuit of third includes third fixed inductance and third mechanical adjustable capacitor in parallel.
Based on the above technical solution, first metalized ground hole, the second metalized ground hole, first are fixed
Inductance, the first mechanical adjustable capacitor, the first mechanical adjustable resistance, the first fixed resistance, the second fixed resistance, the second fixed electricity
Sense, the second mechanical adjustable capacitor, the second mechanical adjustable resistance pass through matching microstrip line connection, third fixed inductance, third machine
Tool tunable capacitor passes through matching microstrip line with third mechanical adjustable resistance and connects.
Based on the above technical solution, the matching microstrip line is 50 ohm of matching microstrip lines, input matching micro-strip
Line and output matching microstrip line are 50 ohm of matching microstrip lines.
Based on the above technical solution, first fixed inductance, the first mechanical adjustable capacitor, the first mechanical adjustable
Resistance, the first fixed resistance, the second fixed resistance, the second fixed inductance, the second mechanical adjustable capacitor, the second mechanical adjustable electricity
Resistance, third fixed inductance, third mechanical adjustable capacitor and third mechanical adjustable resistance are SMD components.
Based on the above technical solution, the medium substrate is FR4, dielectric constant 4.4, plate thickness 0.4mm.
Based on the above technical solution, first fixed inductance is 1.6nH, and the first mechanical adjustable capacitor is 1.5
~3pF, the first mechanical adjustable resistance are 1~200 Ω, and the first fixed resistance is 51 Ω, and the second fixed resistance is 51 Ω, the second machine
Tool tunable capacitor is 1.8~4.5pF, and the second mechanical adjustable resistance is 1~200 Ω, and third fixed inductance is 2.2nH, third machine
Tool tunable capacitor 13 is 1.8~4.5pF, and third mechanical adjustable resistance 14 is 1~200 Ω.
The initial value of above-mentioned fixed inductance and mechanical adjustable capacitor can be calculated according to resonant frequency equation.
Above-mentioned fixed inductance, mechanical adjustable capacitor, fixed resistance sum mechanical adjustable resistance be SMD components, and ruler
Very little all very littles.
In conclusion the utility model proposes a kind of adjustable equilibriums of the wideband gain based on mechanical adjustable resistance capacitance
Debug time is greatly reduced by introducing mechanical adjustable resistance capacitance in device；Resistance type amplitude equalizer is determined by introducing, and is realized
The gain balance of wider frequency section is further introduced into RLC parallel resonance on this basis, solves broadband receiver in wider work
In frequency range, because at certain a bit of frequency gain it is excessively high caused by the uneven problem of gain.
The utility model has the following beneficial effects:
1, resistance capacitance used in the utility model is mechanical adjustable, can be fast by the size of mechanical adjustment capacitor
Speed realizes that working frequency range required for balanced device can fast implement required for balanced device by the size of mechanical adjustment resistance
The time of debugging is greatly reduced in equilibrium quantity, compared with discrete resistance capacitance, the obtained working frequency range of the final balanced device
And equilibrium quantity will be more accurate.
2, the introduced RLC resonance circuit in parallel of the utility model, solves broadband receiver in wider working frequency range,
Because at certain a bit of frequency gain it is excessively high caused by the uneven problem of gain.Pass through mechanical adjustment parallel connection RLC resonance circuit
Capacitance resistance, thus quickly change RLC resonance circuit resonance frequency and Insertion Loss so that the gain at this bit of frequency is dropped
It is low, guarantee whole system gain flatness.
Detailed description of the invention
Fig. 1 is the utility model-embodiment structural schematic diagram.
Fig. 2 is the utility model-embodiment circuit simulation figure.
In figure: 1- input matching microstrip line；The first metalized ground of 2- hole；The second metalized ground of 3- hole；4- first is solid
Determine inductance；5- the first mechanical adjustable capacitor；6- the first mechanical adjustable resistance；The first fixed resistance of 7-；The second fixed resistance of 8-；9-
Second fixed inductance；10- the second mechanical adjustable capacitor；11- the second mechanical adjustable resistance；12- third fixed inductance；13- third
Mechanical adjustable capacitor；14- third mechanical adjustable resistance；15- medium substrate.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is further elaborated the utility model.
Embodiment:
As shown in Figure 1, a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance of the present embodiment, including
Metal base plate, medium substrate 15 and the microstrip structure being cascading from the bottom up.
Microstrip structure include by 50 ohm of matching microstrip lines it is concatenated determine resistance type amplitude equalizer circuit and parallel connection RLC it is humorous
Shake circuit.
Determining resistance type amplitude equalizer circuit includes by 50 ohm of the first fixed inductances 4 for matching microstrip line series/parallel, the
One mechanical adjustable capacitor 5, the first mechanical adjustable resistance 6, the first fixed resistance 7, the second fixed resistance 8, the second fixed inductance 9,
Second mechanical adjustable capacitor 10 and the second mechanical adjustable resistance 11, wherein the first fixed inductance 4 and the first mechanical adjustable capacitor 5
It is connected on the first adjustable LC resonance circuit of composition between the first metalized ground hole 2 and the second metalized ground hole 3, first is mechanical
One end of adjustable resistance 6 is connected to the node between the first fixed inductance 4 and the first mechanical adjustable capacitor 5 and the other end is connected to
One end after node between first fixed resistance 7 and the second fixed resistance 8, the first fixed resistance 7 and the series connection of the second fixed resistance 8
It connects 50 ohm of input matching microstrip lines 1 and the other end is connect by 50 ohm of matching microstrip lines with parallel connection RLC resonance circuit, the
One end connects 50 ohm of input matching microstrip lines 1 after two fixed inductances 9 are connected with the second mechanical adjustable capacitor 10 and the other end is logical
It crosses 50 ohm of matching microstrip lines and connect the second adjustable LC resonance circuit of composition, the second mechanical adjustable electricity with parallel connection RLC resonance circuit
One end of resistance 11 connects 50 ohm of input matching microstrip lines 1 and the other end passes through 50 ohm of matching microstrip lines and RLC resonance in parallel
Circuit connection.
One end of RLC resonance circuit in parallel by 50 ohm of matching microstrip lines with determine resistance type amplitude equalizer circuit connection and
The other end is connected with 50 ohm of output matching microstrip lines, and RLC resonance circuit in parallel includes in parallel by 50 ohm of matching microstrip lines
Third fixed inductance 12, third mechanical adjustable capacitor 13 and third mechanical adjustable resistance 14, third fixed inductance 12 and third
Mechanical adjustable capacitor 13 forms the adjustable LC resonance circuit of third.
The initial value of above-mentioned fixed inductance and mechanical adjustable capacitor can be calculated according to resonant frequency equation.
Above-mentioned fixed inductance, mechanical adjustable capacitor, fixed resistance sum mechanical adjustable resistance be SMD components, and ruler
Very little all very littles.
The utility model is achieved to be had the beneficial effect that
Resistance capacitance used in the utility model is mechanical adjustable, can be quick by the size of mechanical adjustment capacitor
It realizes working frequency range required for balanced device, by the size of mechanical adjustment resistance, can fast implement required for balanced device
Measure, the time of debugging be greatly reduced, compared with discrete resistance capacitance, the final obtained working frequency range of the balanced device with
And equilibrium quantity will be more accurate.
The introduced RLC resonance circuit in parallel of the utility model, solves broadband receiver in wider working frequency range, because
At certain a bit of frequency gain it is excessively high caused by the uneven problem of gain.Pass through mechanical adjustment parallel connection RLC resonance circuit
Capacitance resistance, to quickly change the resonance frequency and Insertion Loss of RLC resonance circuit, so that the gain at this bit of frequency is dropped
It is low, guarantee whole system gain flatness.
One designed on the basis of above embodiments detailed below, 0.38~2.1GHz wideband gain is adjustable
Weighing apparatus.
Medium substrate is FR4, and dielectric constant 4.4, plate thickness 0.4mm, the first fixed inductance 4 is 1.6nH, and first is mechanical
Tunable capacitor 5 is 1.5~3pF, and the first mechanical adjustable resistance 6 is 1~200 Ω, and the first fixed resistance 7 is 51 Ω, and second is fixed
Resistance 8 is 51 Ω, and the second fixed inductance 9 is 1.6nH, and the second mechanical adjustable capacitor 10 is 1.8~4.5pF, the second mechanical adjustable
Resistance 11 is 1~200 Ω, and third fixed inductance 12 is 2.2nH, and third mechanical adjustable capacitor 13 is 1.8~4.5pF, third machine
Tool adjustable resistance 14 is 1~200 Ω.
As shown in Fig. 2, Fig. 2 be 0.38~2.1GHz wideband gain adjustable equalizer at above-mentioned a certain fixed value Insertion Loss and
The emulation data of return loss, lower curve are return loss plot, show that the utility model has good matching properties, from
It emulates in data it can be seen that the Insertion Loss at 0.38GHz frequency is 8.7dB, the Insertion Loss at 2.1GHz frequency is 1.48dB.
Assuming that broadband receiver gain at 1.45GHz is excessively high, therefore the balanced device can be made to exist by mechanical adjustment at this time
Insertion Loss at 1.45GHz is slightly a little bigger, it is ensured that entire working frequency gain flatness is preferable.
In conclusion the utility model proposes a kind of adjustable equilibriums of the wideband gain based on mechanical adjustable resistance capacitance
Debug time is greatly reduced by introducing mechanical adjustable resistance capacitance in device；Resistance type amplitude equalizer is determined by introducing, and is realized
The gain balance of wider frequency section is further introduced into RLC parallel resonance on this basis, solves broadband receiver in wider work
In frequency range, because at certain a bit of frequency gain it is excessively high caused by the uneven problem of gain.
The utility model is not limited to above-mentioned optional embodiment, anyone can obtain under the enlightenment of the utility model
Other various forms of products, however, making any variation in its shape or structure, all the utility model rights that falls into are wanted
The technical solution in confining spectrum is sought, is all fallen within the protection scope of the utility model.
Claims (7)
1. a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance, it is characterised in that: including from the bottom up according to
The secondary metal base plate being stacked, medium substrate (15) and microstrip structure；
The microstrip structure includes determining resistance type amplitude equalizer circuit and parallel connection RLC resonance electricity by the way that matching microstrip line is concatenated
Road；
It is described to determine resistance type amplitude equalizer circuit including being connected on the first metalized ground hole (2) and the second metalized ground hole
(3) the first adjustable LC resonance circuit between, one end connect the first mechanical adjustable resistance (6) of the first adjustable LC resonance circuit,
The first fixed resistance that one end is connected with input matching microstrip line (1) after series connection, the other end is connect with parallel connection RLC resonance circuit
(7) and the second fixed resistance (8), one end connection input matching microstrip line (1) and the other end are connect with parallel connection RLC resonance circuit
Second adjustable LC resonance circuit and one end connect input matching microstrip line (1) and the other end is connect with parallel connection RLC resonance circuit
The second mechanical adjustable resistance (11), the other end of the first mechanical adjustable resistance is connected to the first fixed resistance and the second fixed electricity
Node between resistance；
One end of the parallel connection RLC resonance circuit with determine resistance type amplitude equalizer circuit connection and the other end be connected with output match
Microstrip line, RLC resonance circuit in parallel include the adjustable LC resonance circuit of third and third mechanical adjustable resistance (14) in parallel.
2. a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance according to claim 1, feature
Be: the first adjustable LC resonance circuit includes being connected between the first metalized ground hole and the second metalized ground hole
First fixed inductance (4) and the first mechanical adjustable capacitor (5), one end of the first mechanical adjustable resistance connect the first fixed inductance and
Node between first mechanical adjustable capacitor；
The second adjustable LC resonance circuit include series connection after one end connection input matching microstrip line (1) and the other end with it is in parallel
The second fixed inductance (9) and the second mechanical adjustable capacitor (10) of RLC resonance circuit connection；
The adjustable LC resonance circuit of third includes third fixed inductance (12) and third mechanical adjustable capacitor (13) in parallel.
3. a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance according to claim 2, feature
It is: first metalized ground hole, the second metalized ground hole, the first fixed inductance, the first mechanical adjustable capacitor, first
Mechanical adjustable resistance, the first fixed resistance, the second fixed resistance, the second fixed inductance, the second mechanical adjustable capacitor, the second machinery
Adjustable resistance passes through matching microstrip line connection, third fixed inductance, third mechanical adjustable capacitor and third mechanical adjustable resistance
Pass through matching microstrip line connection.
4. a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance according to claim 1 or 2 or 3,
It is characterized by: the matching microstrip line is 50 ohm of matching microstrip lines, input matching microstrip line and output matching microstrip line are
50 ohm of matching microstrip lines.
5. a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance according to claim 2, feature
Be: first fixed inductance, the first mechanical adjustable capacitor, the first mechanical adjustable resistance, the first fixed resistance, second are fixed
Resistance, the second fixed inductance, the second mechanical adjustable capacitor, the second mechanical adjustable resistance, third fixed inductance, third mechanical adjustable
Capacitor and third mechanical adjustable resistance are SMD components.
6. a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance according to claim 1, feature
Be: the medium substrate is FR4, dielectric constant 4.4, plate thickness 0.4mm.
7. a kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance according to claim 2, feature
Be: first fixed inductance be 1.6nH, the first mechanical adjustable capacitor be 1.5~3pF, the first mechanical adjustable resistance be 1~
200 Ω, the first fixed resistance be 51 Ω, the second fixed resistance be 51 Ω, the second mechanical adjustable capacitor be 1.8~4.5pF, second
Mechanical adjustable resistance is 1~200 Ω, and third fixed inductance is 2.2nH, and third mechanical adjustable capacitor (13) is 1.8~4.5pF,
Third mechanical adjustable resistance (14) is 1~200 Ω.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920246129.9U CN209313825U (en) | 2019-02-26 | 2019-02-26 | A kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance |
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| CN201920246129.9U CN209313825U (en) | 2019-02-26 | 2019-02-26 | A kind of wideband gain adjustable equalizer based on mechanical adjustable resistance capacitance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600568A (en) * | 2020-05-29 | 2020-08-28 | 四川博谱微波科技有限公司 | Novel broadband passive equalizer |
| CN111698184A (en) * | 2020-06-03 | 2020-09-22 | 中国电子科技集团公司第三十六研究所 | Broadband equalization circuit with adjustable amplitude-frequency characteristic |
| CN117200727A (en) * | 2023-11-06 | 2023-12-08 | 中国电子科技集团公司第二十九研究所 | Coaxial gain equalization device |
-
2019
- 2019-02-26 CN CN201920246129.9U patent/CN209313825U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600568A (en) * | 2020-05-29 | 2020-08-28 | 四川博谱微波科技有限公司 | Novel broadband passive equalizer |
| CN111698184A (en) * | 2020-06-03 | 2020-09-22 | 中国电子科技集团公司第三十六研究所 | Broadband equalization circuit with adjustable amplitude-frequency characteristic |
| CN111698184B (en) * | 2020-06-03 | 2023-03-24 | 中国电子科技集团公司第三十六研究所 | Broadband equalization circuit with adjustable amplitude-frequency characteristic |
| CN117200727A (en) * | 2023-11-06 | 2023-12-08 | 中国电子科技集团公司第二十九研究所 | Coaxial gain equalization device |
| CN117200727B (en) * | 2023-11-06 | 2024-01-23 | 中国电子科技集团公司第二十九研究所 | Coaxial gain equalization device |
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