CN106209019A - A kind of radar low-power consumption band filter - Google Patents
A kind of radar low-power consumption band filter Download PDFInfo
- Publication number
- CN106209019A CN106209019A CN201610616945.5A CN201610616945A CN106209019A CN 106209019 A CN106209019 A CN 106209019A CN 201610616945 A CN201610616945 A CN 201610616945A CN 106209019 A CN106209019 A CN 106209019A
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- China
- Prior art keywords
- electric capacity
- resistance
- operational amplifier
- parallel
- inductance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/46—One-port networks
Abstract
The invention discloses a kind of radar low-power consumption band filter, including high-pass filtering circuit, it includes the first operational amplifier, its in the same direction input be connected to signal input part by the second electric capacity of being sequentially connected in series, the first electric capacity, reverse input end and outfan connect, and outfan is connected between the first electric capacity and second electric capacity of series connection also by the first resistance；Low-pass filter circuit, it includes the second operational amplifier, its in the same direction input be connected to the outfan of the first operational amplifier by the 5th resistance that is sequentially connected in series, the 4th resistance, its reverse input end and outfan connect, and its outfan is connected between the 5th resistance and the 4th resistance connected also by the 3rd electric capacity as signal output part；The two ends of the second electric capacity are also by being parallel with earth terminal after the second resistance and the 3rd resistance；The two ends of the 5th resistance are also by being parallel with earth terminal after the 4th electric capacity and the 5th electric capacity.The present invention has the advantage that load forceful electric power line structure is succinct, low in energy consumption.
Description
Technical field
The present invention relates to monitor Radar Technology field, particularly a kind of radar low-power consumption band filter.
Background technology
Radar is to find target by wireless method and measure their locus.Therefore, radar is also referred to as " nothing
Line electricity positions ".Radar is the electronic equipment utilizing electromagnetic wave detection target, and its information carrier is radio wave, and its principle is
The transmitter of radar equipment passes through bundle of lines electromagnetic wave energy directive space, sky a direction, is in the object reflection that this side up and touches
The electromagnetic wave arrived；Radar antenna receives this echo, delivers to reception equipment and processes, and extracts some information of this object relevant
(distance of target object to radar, range rate or radial velocity, orientation, height etc.).
Band filter is the equipment that a ripple allowing special frequency channel passes through to shield other frequency ranges simultaneously, is wireless receiving
Microwave power filtration module conventional in system.Along with modern wireless telecommunication system and the fast development of electronic equipment, research height
The high-power band filter that performance, volume are little, low in energy consumption, load capacity is strong become wireless receiving system key technology it
One.
Summary of the invention
For above-mentioned technical problem, a kind of radar low-power consumption band filter disclosed by the invention, band filter bag
Including second order high-pass filtering circuit and the second-order low-pass filter circuit of series connection, it is ensured that while load capacity, circuit structure is succinct, merit
Consume low.
The technical scheme that the present invention provides is: a kind of radar low-power consumption band filter, including:
High-pass filtering circuit, it includes the first operational amplifier, and the input in the same direction of described first operational amplifier is by successively
Second electric capacity of series connection, the first electric capacity are connected to signal input part；The reverse input end of described first operational amplifier and output
End connects, and the outfan of described first operational amplifier is connected to described first electric capacity and described of series connection also by the first resistance
Between second electric capacity；
Low-pass filter circuit, it includes the second operational amplifier, and the input in the same direction of described second operational amplifier is by successively
5th resistance of series connection, the 4th resistance are connected to the outfan of described first operational amplifier, described second operational amplifier
Reverse input end and outfan connect；The outfan of described second operational amplifier as signal output part also by the 3rd electric capacity
It is connected between described 5th resistance and described 4th resistance of series connection；
Wherein, the two ends of described second electric capacity are also by being parallel with earth terminal after the second resistance and the 3rd resistance；
The two ends of described 5th resistance are also by being parallel with earth terminal after the 4th electric capacity and the 5th electric capacity.
Preferably, be additionally provided with between outfan and described 4th resistance of described first operational amplifier the first inductance and
6th electric capacity, described first inductance is connected between the outfan of described first operational amplifier and described 4th resistance, described
By described 6th capacity earth end between first inductance and described 4th resistance.
Preferably, the second inductance, described second inductance also it are in series with between described first inductance and described 4th resistance
Two ends are parallel with the 7th electric capacity and the 8th electric capacity, and the non-parallel connected end of described 7th electric capacity and described 8th electric capacity converges earth terminal.
Preferably, the power end of described first operational amplifier is connected to power supply by the first filter circuit；Described
One filter circuit includes the 3rd inductance, the 9th in parallel electric capacity and the tenth electric capacity, and the first common port in parallel connects described the respectively
The power end of one operational amplifier, by described 3rd inductance connection to power supply；Second common end grounding end in parallel.
Preferably, the power end of described second operational amplifier is connected to power supply by the second filter circuit；Described
Two filter circuits include the 4th inductance, the 11st electric capacity in parallel and the 12nd electric capacity, and the first common port in parallel meets institute respectively
State the power end of the second operational amplifier, by described 4th inductance connection to power supply；Second common end grounding end in parallel.
The present invention provides the benefit that compared to prior art: the present invention signal input part and the first operational amplifier it
Between two ends second resistance in parallel of the second electric capacity of series connection and the 3rd resistance, form second order high-pass filtering circuit；In the second computing
The two ends of the 5th resistance of series connection the 4th electricity in parallel between input in the same direction and the outfan of the first operational amplifier of amplifier
Holding and the 5th electric capacity, form second-order low-pass filter circuit, second order high-pass filtering circuit is formed with second-order low-pass filter circuit connected in series
Band filter, it is ensured that while load capacity, circuit structure is succinct, low in energy consumption.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of radar low-power consumption band filter of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition
Word can be implemented according to this.
The present invention provides a kind of radar low-power consumption band filter, as shown in Figure 1, radar low-power consumption band filter
Including:
High-pass filtering circuit, it includes the first operational amplifier IC1, and the input in the same direction of the first operational amplifier IC1 is by depending on
Second electric capacity C2 of secondary series connection, the first electric capacity C1 are connected to signal input part；The reverse input end of the first operational amplifier IC1 and
Outfan connect, the outfan of the first operational amplifier IC1 also by the first resistance R1 be connected to series connection the first electric capacity C1 and
Between second electric capacity C2；
Low-pass filter circuit, it includes the second operational amplifier IC2, and the input in the same direction of the second operational amplifier IC2 is by depending on
5th resistance R5 of secondary series connection, the 4th resistance R4 are connected to the outfan of the first operational amplifier IC1, the second operational amplifier
The reverse input end of IC2 and outfan connect；The outfan of the second operational amplifier IC2 is connected to string also by the 3rd electric capacity C3
Between 5th resistance R5 and the 4th resistance R4 of connection；The outfan of the second operational amplifier IC2 is as signal output part；Wherein,
The two ends of the second electric capacity C2 are also by being parallel with earth terminal after the second resistance R2 and the 3rd resistance R3；The two ends of the 5th resistance R5 are also
There is earth terminal after the 4th electric capacity C4 and the 5th electric capacity C5 in parallel.
In above-mentioned embodiment, by the second electric capacity of series connection between signal input part and the first operational amplifier IC1
The two ends of C2 the second resistance R2 and the 3rd resistance R3 in parallel, forms second order high-pass filtering circuit；The second operational amplifier IC2's
The two ends of the 5th resistance R5 of series connection the 4th electric capacity C4 in parallel between the outfan of input and the first operational amplifier IC1 in the same direction
With the 5th electric capacity C5, forming second-order low-pass filter circuit, second order high-pass filtering circuit is formed with second-order low-pass filter circuit connected in series
Band filter, export bandpass signal, circuit structure is succinct, low in energy consumption, load strong, power capacity is big.
As preferably, be additionally provided with between outfan and the 4th resistance R4 of the first operational amplifier IC1 the first inductance L1 and
6th electric capacity C6, the first inductance L1 are connected between outfan and the 4th resistance R4 of the first operational amplifier IC1, the first inductance
By the 6th electric capacity C6 earth terminal between L1 and the 4th resistance R4.As preferred further, the first inductance L1 and the 4th resistance
Also being in series with the second inductance L2 between R4, the second inductance L2 two ends are parallel with the 7th electric capacity C7 and the 8th electric capacity C8, the 7th electric capacity
The non-parallel connected end of C7 and the 8th electric capacity C8 converges earth terminal.In above-mentioned embodiment, the first inductance L1 and the 6th electric capacity C6 composition
LC filter circuit, the second inductance L2, the 7th electric capacity C7 and the 8th electric capacity C8 compositionThe LC filter circuit of type, common LC filtering
Circuit andThe LC filter circuit of type is respectively passive filtering, and filtration efficiency is high, improves filtering accuracy.
As preferably, the power end of the first operational amplifier IC1 is connected to power supply by the first filter circuit；First filtering
Circuit includes the 3rd inductance L3, the 9th electric capacity C9 in parallel and the tenth electric capacity C10, and the first common port in parallel connects the first fortune respectively
Calculate the power end of amplifier IC1, be connected to power supply by the 3rd inductance L3；Second common end grounding end in parallel.Further,
The power end of the second operational amplifier IC2 is connected to power supply by the second filter circuit；Second filter circuit includes the 4th inductance
L4, the 11st electric capacity C11 in parallel and the 12nd electric capacity C12, the first common port in parallel meets the second operational amplifier IC2 respectively
Power end, be connected to power supply by the 4th inductance L4；Second common end grounding end in parallel.First operational amplifier IC1 and
The power supply of the second operational amplifier IC2 is that DC voltage-stabilizing is powered, and needs to suppress High-frequency Interference source, the first filter circuit and the second filter
Wave circuit makes up regulated power supply transient response when the first operational amplifier IC1 and the second operational amplifier IC2 accesses power supply
Slow defect, reduces the surge current interference to DC voltage.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed
Using, it can be applied to various applicable the field of the invention completely, for those skilled in the art, and can be easily
Realizing other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
Claims (5)
1. a radar low-power consumption band filter, it is characterised in that including:
High-pass filtering circuit, it includes the first operational amplifier, and the input in the same direction of described first operational amplifier is by successively
Second electric capacity of series connection, the first electric capacity are connected to signal input part；The reverse input end of described first operational amplifier and output
End connects, and the outfan of described first operational amplifier is connected to described first electric capacity and described of series connection also by the first resistance
Between second electric capacity；
Low-pass filter circuit, it includes the second operational amplifier, and the input in the same direction of described second operational amplifier is by successively
5th resistance of series connection, the 4th resistance are connected to the outfan of described first operational amplifier, described second operational amplifier
Reverse input end and outfan connect；The outfan of described second operational amplifier as signal output part also by the 3rd electric capacity
It is connected between described 5th resistance and described 4th resistance of series connection；
Wherein, the two ends of described second electric capacity are also by being parallel with earth terminal after the second resistance and the 3rd resistance；
The two ends of described 5th resistance are also by being parallel with earth terminal after the 4th electric capacity and the 5th electric capacity.
2. radar low-power consumption band filter as claimed in claim 1, it is characterised in that described first operational amplifier
Being additionally provided with the first inductance and the 6th electric capacity between outfan and described 4th resistance, described first inductance is connected on described first fortune
Calculate between outfan and described 4th resistance of amplifier, by the described 6th between described first inductance and described 4th resistance
Capacity earth end.
3. radar low-power consumption band filter as claimed in claim 2, it is characterised in that described first inductance and described the
Also being in series with the second inductance between four resistance, described second inductance two ends are parallel with the 7th electric capacity and the 8th electric capacity, and the described 7th
The non-parallel connected end of electric capacity and described 8th electric capacity converges earth terminal.
4. radar low-power consumption band filter as claimed in claim 1, it is characterised in that described first operational amplifier
Power end is connected to power supply by the first filter circuit；Described first filter circuit includes the 3rd inductance, the 9th electric capacity in parallel
With the tenth electric capacity, the first common port in parallel connects the power end of described first operational amplifier, respectively by described 3rd inductance
It is connected to power supply；Second common end grounding end in parallel.
5. radar low-power consumption band filter as claimed in claim 1, it is characterised in that described second operational amplifier
Power end is connected to power supply by the second filter circuit；Described second filter circuit includes the 4th inductance, the in parallel the 11st electricity
Holding and the 12nd electric capacity, the first common port in parallel connects the power end of described second operational amplifier, respectively by the described 4th
Inductance connection is to power supply；Second common end grounding end in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616945.5A CN106209019A (en) | 2016-08-01 | 2016-08-01 | A kind of radar low-power consumption band filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616945.5A CN106209019A (en) | 2016-08-01 | 2016-08-01 | A kind of radar low-power consumption band filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106209019A true CN106209019A (en) | 2016-12-07 |
Family
ID=57497727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610616945.5A Withdrawn CN106209019A (en) | 2016-08-01 | 2016-08-01 | A kind of radar low-power consumption band filter |
Country Status (1)
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|---|---|
| CN (1) | CN106209019A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109664U (en) * | 1991-11-12 | 1992-07-08 | 耿纯 | Full bandpass filter electron frequency divider |
| CN204119188U (en) * | 2014-07-31 | 2015-01-21 | 王少夫 | A kind of Novel Filter |
| CN204859132U (en) * | 2015-08-14 | 2015-12-09 | 成都易思科科技有限公司 | Adopt 4580 to transport active low -pass filter circuit of putting |
| CN204967772U (en) * | 2015-10-14 | 2016-01-13 | 惠仁望都医疗设备科技有限公司 | Modified band -pass radio frequency filter |
-
2016
- 2016-08-01 CN CN201610616945.5A patent/CN106209019A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109664U (en) * | 1991-11-12 | 1992-07-08 | 耿纯 | Full bandpass filter electron frequency divider |
| CN204119188U (en) * | 2014-07-31 | 2015-01-21 | 王少夫 | A kind of Novel Filter |
| CN204859132U (en) * | 2015-08-14 | 2015-12-09 | 成都易思科科技有限公司 | Adopt 4580 to transport active low -pass filter circuit of putting |
| CN204967772U (en) * | 2015-10-14 | 2016-01-13 | 惠仁望都医疗设备科技有限公司 | Modified band -pass radio frequency filter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20161207 |