CN105490657A - A high-power band-pass filter - Google Patents
A high-power band-pass filter Download PDFInfo
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- CN105490657A CN105490657A CN201510828392.5A CN201510828392A CN105490657A CN 105490657 A CN105490657 A CN 105490657A CN 201510828392 A CN201510828392 A CN 201510828392A CN 105490657 A CN105490657 A CN 105490657A
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- electric capacity
- inductance
- pass circuit
- pass filter
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H5/00—One-port networks comprising only passive electrical elements as network components
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Abstract
The present invention provides a high-power band-pass filter. The conventional band-pass filter is usually composed of Butterworth circuits with 600 F (0805 package) capacitors and has the disadvantages of poor stop band rejection, large size, low application frequency range and the like and is easily burnt out by high-power signals. The present invention provides a high-power band-pass filter using Chebyshev circuits with 100B packaging capacitors, and is characterized by comprising an input terminal, a third inductor, a first high-pass circuit, a low-pass circuit, a second high-pass circuit, a fourth inductor and an output terminal which are sequentially connected in series. The high-power band-pass filter provided by the present invention has the advantages of simple structure, reasonable design, high performance, high reliability, low processing difficulty, low cost and large power capacity.
Description
Technical field
The present invention relates to a kind of high-power band pass filter, belong to military communication technical field, relate to wavelength band at 400MHz ~ 3000MHz.
Background technology
Band pass filter is microwave power filtration module conventional in wireless receiving system, is generally used in many application scenarios such as the active/passive radar of military communication, prevents receiver and other communication equipments from mutually disturbing.Along with the fast development of modern wireless telecommunication system and electronic equipment, communicate crowded as intensive highway between each frequency range, one of high-power filtration module key becoming wireless receiving system of research high-performance, volume miniaturization.
Traditional band pass filter is usually by Butterworth circuit, and adopt 600F (0805 encapsulation) electric capacity to be made, it has the shortcomings such as stopband suppression is poor, volume large, applying frequency scope is low, is easy to be burnt by high-power signal; Along with the requirement of modern wireless telecommunication system is more and more higher, the requirement of receiver Chinese People's Anti-Japanese Military and Political College signal being burnt to ability constantly promotes, simultaneously improving constantly along with wireless telecommunication system frequency, and development high-frequency high-power band pass filter is extremely urgent.
Summary of the invention
The object of the invention is to overcome above shortcomings in prior art, and provide a kind of reasonable in design, performance is high, and reliability is high, and difficulty of processing is little, the high-power band pass filter that cost is low and power capacity is large.
The present invention's adopted technical scheme that solves the problem is: this high-power band pass filter adopts 100B to encapsulate electric capacity and chebyshev function circuit, it is characterized in that: comprise input terminal, the 3rd inductance, the first high pass circuit, low pass circuit, the second high pass circuit, the 4th inductance and lead-out terminal, described input terminal, the 3rd inductance, the first high pass circuit, low pass circuit, the second high pass circuit, the 4th inductance and lead-out terminal are connected successively.By the setting of the first high pass circuit, low pass circuit, the second high pass circuit, can bear high-power, ensure the reliability of product, above-mentioned filter circuit can be the Out-of-band rejection of 1900MHz and above out of band signal realization >=15dB to frequency, can also the various out of band signal of filtering and the various harmonic component such as second harmonic, triple-frequency harmonics that produced by inband signaling, ensure that the pure of signal.
First high pass circuit of the present invention comprises the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the first inductance, first electric capacity and the second Capacitance parallel connection arrange formation parallel-connection structure, 3rd electric capacity, the 4th Capacitance parallel connection arrange formation parallel-connection structure, first inductance one end is connected between above-mentioned two groups of parallel-connection structures, and other end ground connection.
Low pass circuit of the present invention comprises the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity and the second inductance, the first end of the 5th electric capacity is connected with the second inductance, 6th electric capacity first end is connected with the second inductance, second end of the 5th electric capacity is connected with the second end of the 6th electric capacity and ground connection, the first end of the 7th electric capacity is connected with the second inductance, 8th electric capacity first end is connected with the second inductance, and the second end of the 7th electric capacity is connected with the second end of the 8th electric capacity and ground connection.
First high pass circuit of the present invention is identical with the second high pass circuit structure.
The present invention compared with prior art, have the following advantages and effect: structure is simple, reasonable in design, by the setting of the first high pass circuit, low pass circuit, the second high pass circuit, can bear high-power, ensure the reliability of product, above-mentioned filter circuit can be the Out-of-band rejection of 1900MHz and above out of band signal realization >=15dB to frequency, can also the various out of band signal of filtering and the various harmonic component such as second harmonic, triple-frequency harmonics that produced by inband signaling, ensure that the pure of signal.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of the high-power band pass filter in the embodiment of the present invention.
Fig. 2 is the schematic diagram of high-power band pass filter.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment 1.
See Fig. 1 to Fig. 2, the high-power band pass filter of the present embodiment comprises input terminal in, the 3rd inductance L 3, first high pass circuit 201, low pass circuit 202, second high pass circuit 201, the 4th inductance L 4 and lead-out terminal out.Wherein, the first high pass circuit 201 is identical with the second high pass circuit 201 structure.
Input terminal in the present embodiment, the 3rd inductance L 3, first high pass circuit 201, low pass circuit 202, second high pass circuit 201, the 4th inductance L 4 and lead-out terminal out connect successively.By the setting of the first high pass circuit 201, low pass circuit 202, second high pass circuit 201, can bear high-power, ensure the reliability of product, above-mentioned filter circuit can be the Out-of-band rejection of 1900MHz and above out of band signal realization >=15dB to frequency, can also the various out of band signal of filtering and the various harmonic component such as second harmonic, triple-frequency harmonics that produced by inband signaling, ensure that the pure of signal.
The first high pass circuit 201 in the present embodiment comprises the first electric capacity C1, the second electric capacity C3, the 3rd electric capacity C3, the 4th electric capacity C4 and the first inductance L 1, first electric capacity C1 and the second electric capacity C3 is arranged in parallel formation parallel-connection structure, 3rd electric capacity C3, the 4th electric capacity C4 are arranged in parallel formation parallel-connection structure, first inductance L 1 one end is connected between above-mentioned two groups of parallel-connection structures, and other end ground connection.
Low pass circuit 202 in the present embodiment comprises the 5th electric capacity C5, the 6th electric capacity C6, the 7th electric capacity C7, the 8th electric capacity C8 and the second inductance L 2, the first end of the 5th electric capacity C5 is connected with the second inductance L 2,6th electric capacity C6 first end is connected with the second inductance L 2, second end of the 5th electric capacity C5 is connected with second end of the 6th electric capacity C6 and ground connection, the first end of the 7th electric capacity C7 is connected with the second inductance L 2,8th electric capacity C8 first end is connected with the second inductance L 2, and second end of the 7th electric capacity C7 is connected with second end of the 8th electric capacity C8 and ground connection.
In the present embodiment, 8 electric capacity C1, electric C2, electric C3, electric C4 are the high power requirements meeting product, have employed the form that 100B series A TC electric capacity two is in parallel, namely electric C1, electric C2 are in parallel, electricity C3, electric C4 parallel connection are welded on printed board pad cross road, L1 inductance adopts the coiling of Ф 1.0mm enamelled wire, is welded between printed board pad and cavity ground connection.
Electric capacity C5, electric capacity C6 and inductance L 2 constitute 13 rank low pass filter, 4 electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8 are the high power requirements meeting product, have employed the form that 100B series A TC electric capacity two is in parallel, L2 inductance adopts the coiling of Ф 1.0mm enamelled wire,, be welded on two printed board pad cross roads.
High-power band pass filter in the present embodiment meets the requirement of modern wireless telecommunication system module high-performance, high reliability, has the advantage that difficulty of processing is little, cost is low, lightweight and power capacity is large; By the debugging to each filter, the phase equalization of same batch of product can be ensured.Can also by changing the design frequency of filter circuit and electric capacity quantity to be applied to receiving system application requirement when higher frequency and more high-power use occasion.
The first high pass circuit 201 in the present embodiment and the second high pass circuit 201 are Chebyshev's high pass circuit, and low pass circuit 202 is Chebyshev's low pass circuit.
Above content described in this specification is only made for the present invention illustrating.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of specification of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (4)
1. a high-power band pass filter, it is characterized in that: comprise input terminal, the 3rd inductance, the first high pass circuit, low pass circuit, the second high pass circuit, the 4th inductance and lead-out terminal, described input terminal, the 3rd inductance, the first high pass circuit, low pass circuit, the second high pass circuit, the 4th inductance and lead-out terminal are connected successively.
2. high-power band pass filter according to claim 1, it is characterized in that: described first high pass circuit comprises the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the first inductance, first electric capacity and the second Capacitance parallel connection arrange formation parallel-connection structure, 3rd electric capacity, the 4th Capacitance parallel connection arrange formation parallel-connection structure, first inductance one end is connected between above-mentioned two groups of parallel-connection structures, and other end ground connection.
3. high-power band pass filter according to claim 1 and 2, it is characterized in that: described low pass circuit comprises the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity and the second inductance, the first end of the 5th electric capacity is connected with the second inductance, 6th electric capacity first end is connected with the second inductance, second end of the 5th electric capacity is connected with the second end of the 6th electric capacity and ground connection, the first end of the 7th electric capacity is connected with the second inductance, 8th electric capacity first end is connected with the second inductance, and the second end of the 7th electric capacity is connected with the second end of the 8th electric capacity and ground connection.
4. high-power band pass filter according to claim 1 and 2, is characterized in that: described first high pass circuit is identical with the second high pass circuit structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828392.5A CN105490657A (en) | 2015-11-24 | 2015-11-24 | A high-power band-pass filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828392.5A CN105490657A (en) | 2015-11-24 | 2015-11-24 | A high-power band-pass filter |
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| CN105490657A true CN105490657A (en) | 2016-04-13 |
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| CN201510828392.5A Pending CN105490657A (en) | 2015-11-24 | 2015-11-24 | A high-power band-pass filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425823A (en) * | 2017-07-20 | 2017-12-01 | 安徽矽芯微电子科技有限公司 | A kind of ultra wide band bandpass filter |
| CN109687834A (en) * | 2019-01-25 | 2019-04-26 | 吉林大学 | A kind of impedance transformer and preparation method with Chebyshev's filtering characteristic of multistage transmission line and short-circuit line |
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| CN101507113A (en) * | 2006-08-21 | 2009-08-12 | 贺利实公司 | Broadband impedance matching circuit using high pass and low pass filter sections |
| JP2011015064A (en) * | 2009-06-30 | 2011-01-20 | Toshiba Corp | Diplexer circuit |
| US20120274420A1 (en) * | 2011-04-26 | 2012-11-01 | Murata Manufacturing Co., Ltd. | Filter circuit |
| CN204316459U (en) * | 2015-01-28 | 2015-05-06 | 仪特电子工业（宁波）有限公司 | Triplexer circuit |
| CN204334734U (en) * | 2015-01-28 | 2015-05-13 | 仪特电子工业（宁波）有限公司 | Unidirectional magnifier circuit |
| CN205142152U (en) * | 2015-11-24 | 2016-04-06 | 浙江嘉科电子有限公司 | High -power band pass filter |
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2015
- 2015-11-24 CN CN201510828392.5A patent/CN105490657A/en active Pending
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| CN101507113A (en) * | 2006-08-21 | 2009-08-12 | 贺利实公司 | Broadband impedance matching circuit using high pass and low pass filter sections |
| JP2011015064A (en) * | 2009-06-30 | 2011-01-20 | Toshiba Corp | Diplexer circuit |
| US20120274420A1 (en) * | 2011-04-26 | 2012-11-01 | Murata Manufacturing Co., Ltd. | Filter circuit |
| CN204316459U (en) * | 2015-01-28 | 2015-05-06 | 仪特电子工业（宁波）有限公司 | Triplexer circuit |
| CN204334734U (en) * | 2015-01-28 | 2015-05-13 | 仪特电子工业（宁波）有限公司 | Unidirectional magnifier circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425823A (en) * | 2017-07-20 | 2017-12-01 | 安徽矽芯微电子科技有限公司 | A kind of ultra wide band bandpass filter |
| CN109687834A (en) * | 2019-01-25 | 2019-04-26 | 吉林大学 | A kind of impedance transformer and preparation method with Chebyshev's filtering characteristic of multistage transmission line and short-circuit line |
| CN109687834B (en) * | 2019-01-25 | 2020-11-27 | 吉林大学 | Chebyshev filtering impedance converter and method for multi-order transmission line and short-circuit line |
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