CN111969976B - Five-in-one numerical control frequency hopping filter - Google Patents
Five-in-one numerical control frequency hopping filter Download PDFInfo
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- CN111969976B CN111969976B CN202010815303.4A CN202010815303A CN111969976B CN 111969976 B CN111969976 B CN 111969976B CN 202010815303 A CN202010815303 A CN 202010815303A CN 111969976 B CN111969976 B CN 111969976B
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- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
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Abstract
The invention provides a five-in-one numerical control frequency hopping filter, which comprises an inductor L1-7, a capacitor C1-4, a diode D1-2 and a pi-type resonant network, wherein the pi-type resonant network comprises: the five-in-one digital control frequency hopping filter can improve the left and right sideband inhibition of band-pass filtering, optimize the insertion loss, tune more frequency bands and improve the anti-interference effect of the whole circuit through the inductors L1-7, the capacitors C1-4, the diodes D1-2 and the pi-type resonant network.
Description
Technical Field
The invention relates to the technical field of frequency hopping filters, in particular to a five-in-one numerical control frequency hopping filter.
Background
With the rapid development of microelectronics and digital signal processing technologies, filters are the most common basic elements in radio communication engineering in existing wireless communication technologies. The frequency hopping technology is one of the most dominant anti-interference and high confidentiality technical means in military communication. If the system uses a bandpass filter with a proper frequency bandwidth, the anti-interference performance of the bandpass filter is obviously improved. Frequency hopping communication is one of the main ways of modern military communication and is becoming a hotspot of research today.
The existing filter mostly adopts an enameled copper wire wound hollow inductor as a main resonance inductor and is matched with two small magnetic rings for tuning, so that the resonance inductor of the numerical control frequency hopping filter is manufactured. The scheme has the advantages of convenient manufacture and low cost, and has the defects that the low-frequency band index generally meets the requirement, but the far-band inhibition is too bad, and when the filter frequency is between 30MHz and 600MHz, the far-band inhibition is about 20dB generally at 1.2GHz, and the requirement cannot be met. Further, since the filter index starts to deteriorate after the filter frequency exceeds 1GHz, for example, the insertion loss increases, a new frequency hopping filter is required, and the far-band suppression effect can be improved.
Disclosure of Invention
The invention provides a five-in-one numerical control frequency hopping filter to solve the problems that the traditional numerical control frequency hopping wave trap cannot tune more frequency bands and improve the far-band printing effect.
The technical scheme of the invention is realized as follows: a five-in-one digitally controlled frequency hopping filter comprising: inductance L1-7, capacitance C1-4, diode D1-2 and pi type resonant network;
the signal input of the five-in-one numerical control frequency hopping filter is through one end of an inductor L1, the other end of the inductor L1 is connected with one end of an inductor L2, the middle end of the inductor L2 is grounded, the other end of the inductor L2 is connected with one end of an inductor L3, the other end of the inductor L4 is grounded, one end of the inductor L3 is also connected with the other end of a diode D1, one end of the inductor L3 is also connected with one end of a capacitor C1 in parallel, the other end of the capacitor C1 is connected with the other end of the inductor L3 in parallel, the other end of the inductor L3 is connected with one end of a pi-shaped resonant network, the other end of the pi-shaped resonant network is connected with the other end of the inductor L5, one end of the diode D1 is connected with the other end of the capacitor C3, one end of the capacitor C3 is grounded, the other end of the inductor L3 is connected with the other end of the inductor L5, one end of the inductor L5 is connected with the other end of the diode D2, one end of the diode D2 is connected with the other end of the capacitor C4, one end of the other end of the capacitor C4 is grounded, one end of the inductor C5 is grounded, one end of the inductor L5 is connected with one end of the inductor L6, one end of the inductor L5 is connected with one end of the capacitor C2, the other end is in parallel, the other end of the inductor C is connected with the inductor L5, the other end is grounded, the other end is connected, the inductor is connected with the other end is and is connected, the other end is grounded, and is connected and is grounded.
Optionally, the pi-type resonant network includes: capacitance C5-8, inductance L8-9, and resistance R1;
the inductor L3 other end is connected with electric capacity C5 one end, and the electric capacity C5 other end is connected with electric capacity C7 one end, and the electric capacity C7 other end is connected with resistance R1 one end, and the resistance R1 other end is connected with the electric capacity C8 other end, and electric capacity C8 one end is connected with the inductor L9 other end, and inductor L9 one end is connected with the inductor L8 other end, and inductor L8 one end is connected with the inductor L5 other end, and electric capacity C6 one end is connected with the electric capacity C5 other end, and the electric capacity C6 other end is connected with the inductor L8 other end.
Optionally, the inductors L1-7 are made of magnetic ring wound enameled wires and are used for low frequency bands of 30 MHz-600 MHz.
Optionally, the inductors L1 to 7 include: the main resonance magnetic ring L3-5, the coupling magnetic rings L1 and L7 and the tuning magnetic rings L2 and L6, wherein the main resonance magnetic ring L3-5 is supported by an enameled copper wire wound hollow inductor, and the coupling magnetic rings L1 and L7 and the tuning magnetic rings L2 and L6 are made of magnetic ring wound enameled wires and are used for high frequency bands of 600 MHz-2 GHz.
Optionally, the five-in-one numerical control frequency hopping filter is used for adjusting the frequency of 30 MHz-2 GHz of a transceiver end of a radio station.
Compared with the prior art, the five-in-one numerical control frequency hopping filter has the following beneficial effects:
(1) The five-in-one numerical control frequency hopping filter greatly optimizes the far-band inhibition of 1.2GHz to 2GHz at the low end from 30MHz to 600MHz, improves the inhibition effect on high-end harmonic waves, and simultaneously improves the anti-interference capability of the whole circuit;
(2) The five-in-one numerical control frequency hopping filter greatly optimizes the insertion loss at the high end from 600MHz to 2GHz, thereby improving the left and right side band inhibition of the band-pass filter and simultaneously optimizing the electronic countermeasure effect.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a circuit diagram of a five-in-one digitally controlled frequency hopping filter of the present invention.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
As shown in fig. 1, the five-in-one digitally controlled frequency hopping filter of the present embodiment includes: the five-in-one digital control frequency hopping filter signal input is through one end of an inductor L1, the other end of the inductor L1 is connected with one end of an inductor L2, the middle end of the inductor L2 is grounded, the other end of the inductor L2 is connected with one end of an inductor L3, the other end of the inductor L3 is connected with one end of an inductor L4, the other end of the inductor L4 is grounded, one end of the inductor L3 is also connected with the other end of the diode D1, one end of the inductor L3 is also connected with one end of the capacitor C1 in parallel, the other end of the capacitor C1 is connected with the other end of the inductor L3 in parallel, the other end of the inductor L3 is connected with one end of the pi-type resonant network, the other end of the pi-type resonant network is connected with the other end of the inductor L5, one end of the diode D1 is connected with the other end of the capacitor C3, one end of the capacitor C3 is grounded, the other end of the inductor L3 is connected with the other end of the inductor L5, one end of the inductor L5 is connected with the other end of the diode D2, one end of the diode D2 is connected with the other end of the capacitor C4, one end of the capacitor C4 is grounded, one end of the inductor L5 is connected with one end of the inductor L6, one end of the inductor C2 is connected with one end of the inductor C2, one end of the inductor C6 is connected with one end of the inductor L7 in parallel, and the other end of the inductor L7 is grounded.
The pi-type resonant network includes: the capacitor C5-8, inductance L8-9 and resistance R1, the inductance L3 other end is connected with electric capacity C5 one end, and electric capacity C5 other end is connected with electric capacity C7 one end, and electric capacity C7 other end is connected with resistance R1 one end, and the resistance R1 other end is connected with electric capacity C8 other end, and electric capacity C8 one end is connected with inductance L9 other end, and inductance L9 one end is connected with inductance L8 other end, and inductance L8 one end is connected with the inductance L5 other end, and electric capacity C6 one end is connected with electric capacity C5 other end, and the electric capacity C6 other end is connected with inductance L8 other end.
The embodiment adopts an STC89C51 single chip microcomputer, and the STC89C51 single chip microcomputer outputs high and low levels of +3.3V/0V through an IO port, wherein the total level is 10 paths. The filter is internally provided with a Flash memory, the Flash memory is used for receiving level control signals sent by the singlechip, the signals are 00000000 to 11111010, if the signals are hexadecimal, the signals are 00H to FAH, 250 frequency points are all arranged, and the signals are from the low end to the high end.
The inductance L1-7, the capacitance C1-4, the diode D1-2 and the pi-type resonant network form the whole five-in-one numerical control frequency hopping filter, more frequency bands can be tuned, the anti-interference capability of the whole circuit is improved, and the far-band inhibition effect of the whole circuit is optimized.
The technical scheme in this embodiment is implemented as follows:
in the low frequency range from 30MHz to 600MHz, a magnetic ring winding enameled wire is used to replace the original enameled wire winding air core inductor, the number of the magnetic rings is increased from the original two tuning small magnetic rings to the current seven magnetic rings, the magnetic rings comprise a main resonance magnetic ring, a coupling magnetic ring and a tuning magnetic ring, a band-pass filter is formed by matching with a resonance capacitor, and the number of the resonance capacitors is adjusted through a digital control circuit, so that the frequency modulation of the filter is realized; the enameled wire formed by the magnetic ring is an inductor, and the resonance of the capacitor is a filter; LC resonance; the PIN diode is controlled to be switched on and off through the high and low level, one path of capacitor is switched on, the LC resonance is participated, 10 paths of capacitors are switched on simultaneously, namely the lowest frequency point, and the highest frequency point is not switched on simultaneously.
In the range from 600MHz to 2GHz of the high-frequency band, the main resonant inductor is adopted to wind the hollow inductor by the enamelled copper wire, the coupling inductor and the tuning inductor are manufactured by winding the enamelled copper wire by the magnetic ring, and the resonant frequency can be 2GHz while parasitic capacitance and parasitic inductance are considered.
In this embodiment, the inductors L1 to 7 are made of magnetic ring wound enameled wires and are used for low frequency bands of 30MHz to 600MHz.
In this embodiment, the inductors L1 to 7 include: the main resonance magnetic ring L3-5, the coupling magnetic rings L1 and L7 and the tuning magnetic rings L2 and L6, wherein the main resonance magnetic ring L3-5 is supported by an enameled copper wire wound hollow inductor, and the coupling magnetic rings L1 and L7 and the tuning magnetic rings L2 and L6 are made of magnetic ring wound enameled wires and are used for high frequency bands of 600 MHz-2 GHz.
In this embodiment, the five-in-one digital control frequency hopping filter is used for frequency adjustment of 30 MHz-2 GHz at the transceiver end of the radio station.
The foregoing description of the preferred embodiments of the present invention should not be taken as limiting the invention, but rather, any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present invention should be construed as including within its scope the preferred embodiments of the present invention.
Claims (4)
1. A five-in-one digitally controlled frequency hopping filter comprising: inductance L1-7, capacitance C1-4, diode D1-2 and pi type resonant network;
the signal input of the five-in-one digital control frequency hopping filter is connected with one end of an inductor L1, the other end of the inductor L1 is connected with one end of an inductor L2, the middle end of the inductor L2 is grounded, the other end of the inductor L2 is connected with one end of an inductor L3, the other end of the inductor L4 is grounded, one end of the inductor L3 is also connected with the other end of a diode D1, one end of the inductor L3 is also connected with one end of a capacitor C1 in parallel, the other end of the capacitor C1 is connected with the other end of the inductor L3 in parallel, the other end of the inductor L3 is connected with one end of a pi-type resonant network, the other end of the pi-type resonant network is connected with the other end of the inductor L5, one end of the diode D1 is connected with the other end of the capacitor C3, one end of the capacitor C3 is grounded, the other end of the inductor L3 is connected with the other end of the inductor L5, one end of the inductor L5 is connected with the other end of the diode D2, one end of the diode D2 is connected with the other end of the capacitor C4, one end of the capacitor C4 is grounded, one end of the inductor L5 is connected with one end of the inductor L6, one end of the inductor L5 is connected with one end of the capacitor C2, the other end is connected with the other end of the inductor C5 in parallel, the other end of the inductor L6 is connected with the other end, the other end of the inductor L6 is grounded, and the inductor L7 flows out of the signal from the inductor L7;
the pi-type resonant network includes: capacitance C5-8, inductance L8-9, and resistance R1;
the inductor L3 other end is connected with electric capacity C5 one end, and the electric capacity C5 other end is connected with electric capacity C7 one end, and the electric capacity C7 other end is connected with resistance R1 one end, and the resistance R1 other end is connected with the electric capacity C8 other end, and electric capacity C8 one end is connected with the inductor L9 other end, and inductor L9 one end is connected with the inductor L8 other end, and inductor L8 one end is connected with the inductor L5 other end, and electric capacity C6 one end is connected with the electric capacity C5 other end, and the electric capacity C6 other end is connected with the inductor L8 other end.
2. The five-in-one digital control frequency hopping filter as set forth in claim 1, wherein the inductors L1 to 7 are made of magnetic ring wound enameled wires for low frequency bands of 30MHz to 600MHz.
3. The five-in-one digitally controlled frequency hopping filter of claim 1 wherein said inductors L1 to 7 comprise: the main resonance magnetic ring L3-5, the coupling magnetic rings L1 and L7 and the tuning magnetic rings L2 and L6, wherein the main resonance magnetic ring L3-5 is supported by an enameled copper wire wound hollow inductor, and the coupling magnetic rings L1 and L7 and the tuning magnetic rings L2 and L6 are made of magnetic ring wound enameled wires and are used for high frequency bands of 600 MHz-2 GHz.
4. The five-in-one digitally controlled frequency hopping filter of claim 1, wherein the five-in-one digitally controlled frequency hopping filter is used for frequency adjustment of 30MHz to 2GHz at a transceiver of a radio station.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004248121A (en) * | 2003-02-17 | 2004-09-02 | Alps Electric Co Ltd | Band path filter |
| JP2005167624A (en) * | 2003-12-02 | 2005-06-23 | Ngk Spark Plug Co Ltd | Laminated electronic component and radio apparatus |
| CN101729036A (en) * | 2009-04-24 | 2010-06-09 | 南京理工大学 | High stop-band restraining microwave intermediate frequency band pass filter |
| CN203968079U (en) * | 2014-06-28 | 2014-11-26 | 广东圣大电子有限公司 | A kind of ultrabroad band bounce frequency filter |
| CN104202012A (en) * | 2014-07-29 | 2014-12-10 | 宝鸡烽火诺信科技有限公司 | Minimized co-location filter |
| CN205377805U (en) * | 2015-12-21 | 2016-07-06 | 成都新欣神风电子科技有限公司 | Partly lump microwave bandwidth -limited circuit and wave filter |
| CN206865421U (en) * | 2017-04-12 | 2018-01-09 | 南京希尼尔通信技术有限公司 | LC wave filters minimize |
| CN209517083U (en) * | 2019-02-27 | 2019-10-18 | 武汉博畅通信设备有限责任公司 | A kind of RF power amplification filter assembly of ultra wide band section transceiver |
| CN209517084U (en) * | 2019-02-27 | 2019-10-18 | 武汉博畅通信设备有限责任公司 | A kind of large-power broadband bounce frequency filter |
-
2020
- 2020-08-12 CN CN202010815303.4A patent/CN111969976B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004248121A (en) * | 2003-02-17 | 2004-09-02 | Alps Electric Co Ltd | Band path filter |
| JP2005167624A (en) * | 2003-12-02 | 2005-06-23 | Ngk Spark Plug Co Ltd | Laminated electronic component and radio apparatus |
| CN101729036A (en) * | 2009-04-24 | 2010-06-09 | 南京理工大学 | High stop-band restraining microwave intermediate frequency band pass filter |
| CN203968079U (en) * | 2014-06-28 | 2014-11-26 | 广东圣大电子有限公司 | A kind of ultrabroad band bounce frequency filter |
| CN104202012A (en) * | 2014-07-29 | 2014-12-10 | 宝鸡烽火诺信科技有限公司 | Minimized co-location filter |
| CN205377805U (en) * | 2015-12-21 | 2016-07-06 | 成都新欣神风电子科技有限公司 | Partly lump microwave bandwidth -limited circuit and wave filter |
| CN206865421U (en) * | 2017-04-12 | 2018-01-09 | 南京希尼尔通信技术有限公司 | LC wave filters minimize |
| CN209517083U (en) * | 2019-02-27 | 2019-10-18 | 武汉博畅通信设备有限责任公司 | A kind of RF power amplification filter assembly of ultra wide band section transceiver |
| CN209517084U (en) * | 2019-02-27 | 2019-10-18 | 武汉博畅通信设备有限责任公司 | A kind of large-power broadband bounce frequency filter |
Non-Patent Citations (3)
| Title |
|---|
| Electrical Tunable Microstrip LC Bandpass Filters With Constant Bandwidth;Qianyin Xiang;《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》;全文 * |
| 一种VHF频段电调谐滤波器的设计;梁军;;科技经济市场(第11期);全文 * |
| 宽调谐高线性超短波电调滤波器的设计与实现;刘旭波;《磁性材料及器件》;全文 * |
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