CN202949399U - C-waveband tuner anti-interference filter - Google Patents
C-waveband tuner anti-interference filter Download PDFInfo
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- CN202949399U CN202949399U CN 201220262678 CN201220262678U CN202949399U CN 202949399 U CN202949399 U CN 202949399U CN 201220262678 CN201220262678 CN 201220262678 CN 201220262678 U CN201220262678 U CN 201220262678U CN 202949399 U CN202949399 U CN 202949399U
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Abstract
The utility model is a C-waveband tuner anti-interference filter comprising a signal input interface, a signal output interface and an anti-interference circuit, wherein the signal input terminal and the signal output terminal of the anti-interference circuit is respectively connected with the signal input interface and the signal output interface. Besides, the anti-interference circuit is composed of four main opening resonance loops that are arranged into two layers and are distributed in a square matrix; the opening direction of the two adjacent main opening resonance loops arranged at the lower layer are arranged in a horizontal face-to-face mode; and the opening direction of the two adjacent main opening resonance loops arranged at the upper layer are arranged in a horizontal opposite mode. And the signal input terminal and the signal output terminal of the anti-interference circuit are respectively connected with the two main opening resonance loops at the upper layer. According to the utility model, advantages of the filter are as follows: the 3.5-GHz adjacent frequency WIMAX interference resistant capability of the tuner can be improved; the order of the filter is designed to be low; and the electrical signal loss is low and the like.
Description
Technical field
The utility model relates to a kind of filter, particularly a kind of C-band tuner anti-interference filter.
Background technology
Filter is a kind of device that is used for eliminating jamming incoherent signal, obtains pure direct current with inputing or outputing through filtration.To the circuit that frequency or the frequency beyond this frequency of characteristic frequency are carried out effective filtering, be exactly filter, its function obtains exactly a characteristic frequency or eliminates a characteristic frequency.Filter can be divided into passive filter and active filter.
Passive filter: the filter that only is comprised of passive component (R, L and C), its principle that to be the reactance that utilizes electric capacity and inductance element change with the variation of frequency consists of.The advantage of this class filter is: circuit is fairly simple, does not need DC power supply, and reliability is high; Shortcoming is: the signal in passband has energy loss, and load effect is apparent in view, easily causes electromagnetic induction when using inductance element, and the volume and weight of filter is all larger when inductance L is larger, and is inapplicable at lower frequency region.
Active filter: formed by passive component (generally using R and C) and active device (as integrated operational amplifier).The advantage of this class filter is: the signal in passband does not only have energy loss, but also can amplify, load effect is not obvious, influence each other during multistage linking very little, utilize the straightforward procedure of cascade to be easy to consist of higher order filter, and the volume of filter little, lightweight, do not need magnetic screen (owing to not using inductance element); Shortcoming is: free transmission range is subjected to the limit bandwidth of active device (as integrated operational amplifier), needs DC power supply, and reliability is high not as passive filter, and is inapplicable at high pressure, high frequency, powerful occasion.
(3.7G～4.2G) tuner design of filter technology exists defective can not adapt to the abominable electromagnetic interference environment of the current adjacent 4G of 3.5GHz WIMAX frequently wireless telecommunications to existing C wave band.
Improve the anti-adjacent interference performance of 3.5GHz WIMAX frequently of tuner, must realize by improving LNB filter inhibition 3.5GHz ability.Due to the hair clip of routine, the filter such as interdigital to realize high adjacent frequently disturb suppress must be with the exponent number design of filter very high, so can bring filter insertion loss sharply to become large, also can increase greatly the area size of filter, so must realize with novel filter, this programme adopts cross-coupled filter to improve the adjacent inhibition frequently of 3.5G ability.
In sum, be badly in need of at present a kind ofly improving the anti-adjacent interference performance of 3.5GHz WIMAX frequently of tuner, the exponent number design of filter is low, the filter that signal of telecommunication loss is low.
The utility model content
Technical problem to be solved in the utility model is the shortcomings such as the filter order design of using at present is high, signal of telecommunication loss height.
The utility model is achieved through the following technical solutions above-mentioned purpose:
Shortcoming for existing tuner filter, design a kind of C-band tuner anti-interference filter, comprise signal input interface, signal output interface and anti-jamming circuit, the signal input part of described anti-jamming circuit and signal output part connect with signal input interface and signal output interface respectively.Described anti-jamming circuit is comprised of the main opening resonant ring of four, wherein divides two-layer setting and is the square matrices distribution in four main opening resonant rings; Wherein be positioned at the adjacent opposing setting of two main opening resonant ring opening direction levels of lower floor; Two adjacent main opening resonant ring opening direction levels that are positioned at the upper strata arrange in opposite directions, and the signal input part of described anti-jamming circuit and signal output part connect with two main opening resonant rings on upper strata respectively.
Two main opening resonant ring amongs on the signal input part of described anti-jamming circuit and signal output part and upper strata are provided with an opening direction secondary split ring resonator straight down.
Be respectively arranged with two secondary split ring resonators that opening direction is opposite between two main opening resonant rings on the signal input part of described anti-jamming circuit and signal output part and upper strata, the opening direction of the secondary split ring resonator adjacent with upper strata main opening resonant ring straight down.
Be respectively arranged with two secondary split ring resonators that opening direction is opposite between two main opening resonant rings on the signal input part of described anti-jamming circuit and signal output part and upper strata, the opening of the secondary split ring resonator adjacent with upper strata main opening resonant ring to be towards the split ring resonator of living on upper strata, not adjacent with upper strata main opening resonant ring secondary split ring resonator be positioned at adjacent secondary split ring resonator directly over.
The utlity model has and to improve the anti-adjacent interference performance of 3.5GHz WIMAX frequently of tuner, the advantage such as the exponent number design of filter is low, and signal of telecommunication loss is low.
Description of drawings
Fig. 1 is the circuit topology figure of the utility model embodiment one;
Fig. 2 is the operation principle schematic diagram of the utility model embodiment one;
Fig. 3 is the inhibition figure of the cross-coupled filter of the utility model embodiment one;
Fig. 4 is the circuit topology figure of the utility model embodiment two;
Fig. 5 is the circuit topology figure of the utility model embodiment three.
Embodiment
Embodiment one: as shown in Figure 1, comprise signal input interface 1, signal output interface 2 and anti-jamming circuit 3, the signal input part 31 of described anti-jamming circuit 3 and signal output part 32 connect with signal input interface 1 and signal output interface 2 respectively.Described anti-jamming circuit 3 is comprised of the main opening resonant ring 4 of four, wherein divides two-layer setting and is the square matrices distribution in four main opening resonant rings 4; Wherein be positioned at two adjacent main opening resonant rings 41, the 42 opposing settings of opening direction level of lower floor; Two the adjacent main opening resonant rings 43, the 44 opening direction levels that are positioned at the upper strata arrange in opposite directions, and the signal input part 31 of described anti-jamming circuit 3 and signal output part 32 connect with two main opening resonant rings 41,42 on upper strata respectively.
As shown in Figure 2, what solid arrow was indicated is the main signal transmission path, and what dotted arrow represented is the cross-couplings transmission path.The 3.5G neighbour that need to suppress disturbs frequently, also indicates the cross-couplings path transmission from dotted arrow except indicating the main path transmission from solid arrow, and the two-way phase place just differs 180 degree, and two-way differs 180 degree signals and realize high inhibition counteracting after output converges.As shown in Figure 3,3700M～4200M is range of signal, and filter suppresses in 3500M～3600M scope〉65dB, satisfy engineering demand.
Embodiment two: as shown in Figure 4, the signal input part 31 of described anti-jamming circuit 3 and signal output part 32 are provided with an opening direction secondary split ring resonator 45,46 straight down with two main opening resonant rings 41,42 amongs on upper strata.
Embodiment three: as shown in Figure 5, be respectively arranged with two secondary split ring resonators 45,46,47,48 that opening direction is opposite between two main opening resonant rings 41,42 on the signal input part 31 of described anti-jamming circuit 3 and signal output part 32 and upper strata, the secondary split ring resonator 45 adjacent with upper strata main opening resonant ring 41,42,46 opening direction are straight down.
Claims (4)
1. C-band tuner anti-interference filter, comprise signal input interface, signal output interface and anti-jamming circuit, the signal input part of described anti-jamming circuit and signal output part connect with signal input interface and signal output interface respectively, it is characterized in that described anti-jamming circuit is comprised of the main opening resonant ring of four, wherein minute two-layer setting and be square matrices and distribute in four main opening resonant rings; Wherein be positioned at the adjacent opposing setting of two main opening resonant ring opening direction levels of lower floor; Two adjacent main opening resonant ring opening direction levels that are positioned at the upper strata arrange in opposite directions, and the signal input part of described anti-jamming circuit and signal output part connect with two main opening resonant rings on upper strata respectively.
2. C-band tuner anti-interference filter according to claim 1, is characterized in that the signal input part of described anti-jamming circuit and two main opening resonant ring amongs on signal output part and upper strata are provided with an opening direction secondary split ring resonator straight down.
3. C-band tuner anti-interference filter according to claim 1, it is characterized in that being respectively arranged with two secondary split ring resonators that opening direction is opposite between two main opening resonant rings on the signal input part of described anti-jamming circuit and signal output part and upper strata, the opening direction of the secondary split ring resonator adjacent with upper strata main opening resonant ring straight down.
4. C-band tuner anti-interference filter according to claim 1, it is characterized in that being respectively arranged with two secondary split ring resonators that opening direction is opposite between two main opening resonant rings on the signal input part of described anti-jamming circuit and signal output part and upper strata, the opening of the secondary split ring resonator adjacent with upper strata main opening resonant ring to be towards the split ring resonator of living on upper strata, not adjacent with upper strata main opening resonant ring secondary split ring resonator be positioned at adjacent secondary split ring resonator directly over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220262678 CN202949399U (en) | 2012-06-06 | 2012-06-06 | C-waveband tuner anti-interference filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220262678 CN202949399U (en) | 2012-06-06 | 2012-06-06 | C-waveband tuner anti-interference filter |
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| Publication Number | Publication Date |
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| CN202949399U true CN202949399U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220262678 Expired - Fee Related CN202949399U (en) | 2012-06-06 | 2012-06-06 | C-waveband tuner anti-interference filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112601057A (en) * | 2020-11-27 | 2021-04-02 | 浙江盛洋科技股份有限公司 | Anti 5G signal interference device that removes of C wave band |
-
2012
- 2012-06-06 CN CN 201220262678 patent/CN202949399U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112601057A (en) * | 2020-11-27 | 2021-04-02 | 浙江盛洋科技股份有限公司 | Anti 5G signal interference device that removes of C wave band |
| CN112601057B (en) * | 2020-11-27 | 2023-03-03 | 浙江盛洋科技股份有限公司 | Anti 5G signal interference device that removes of C wave band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huizhou Ao Shitong Electronics Co., Ltd. Assignor: Shenzhen Ourstone Electronic Co., Ltd. Contract record no.: 2015440000414 Denomination of utility model: C-waveband tuner anti-interference filter Granted publication date: 20130522 License type: Exclusive License Record date: 20150706 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20160606 |