CN2805106Y - Microwave trap based upon right/left-hand compound transmission line - Google Patents
Microwave trap based upon right/left-hand compound transmission line Download PDFInfo
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- CN2805106Y CN2805106Y CN 200520012718 CN200520012718U CN2805106Y CN 2805106 Y CN2805106 Y CN 2805106Y CN 200520012718 CN200520012718 CN 200520012718 CN 200520012718 U CN200520012718 U CN 200520012718U CN 2805106 Y CN2805106 Y CN 2805106Y
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- transmission line
- hand
- composite transmission
- microwave trap
- compound transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 31
- 150000001875 compounds Chemical class 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a microwave trap based upon left/right-hand compound transmission lines, which is provided with a plurality of left/right-hand compound transmission line units, wherein the left/right-hand compound transmission line unit is formed by connecting in parallel a left-hand material capacitor C< L > and a right-hand material inductor L< R > and then connecting in series a left-hand material inductor L< L > and a right-hand material capacitor C< R >. The number of the left/right-hand compound transmission line units is determined according to the required wave trapped depth. The utility model has the advantages of low band pass loss, large wave trapped bandwidth and high wave trapped depth. Meanwhile, the novel microwave trap has the advantages of low cost, small size and convenient manufacture and integration.
Description
Technical field
The utility model relates to a kind of microwave trap based on left-right-hand composite transmission line.
Background technology
Microwave trap is widely used in microwave communication, satellite communication, radio communication, cable TV, the electronic countermeasures, removes unwanted frequency.
At present, the right-handed material structure that known microwave trap normally is made up of capacitor C, inductance L, but existing microwave trap shortcoming is that pass-band loss is big, stopband edge is slowly fallen, notch-width is narrow and notch depth is big inadequately, can not well satisfy the needs of microwave communication, satellite communication, radio communication, cable TV, electronic countermeasures.
In order to enlarge the narrow and raising notch depth of notch-width, many scholars have proposed certain methods, as: adopt the ceramic trapper structure, but whole trapper manufacture difficulty increases, and trapper-the 20dB notch-width is 300kHz, notch-width does not improve; Employing has the LC right-handed material trapper structure of resonator, but (as this notch depth with LC right-handed material trapper of resonator is 15dB still can't to overcome the narrow limitation of notch-width,-3dB notch-width is 600kHz), increase whole trapper manufacture difficulty and cost of manufacture again.
Summary of the invention
The purpose of this utility model be slow fall in order to overcome existing microwave trap stopband edge, deficiency that notch-width is little, a kind of microwave trap based on left-right-hand composite transmission line is provided.
The purpose of this utility model is to realize by following proposal:
It has a plurality of left-right-hand composite transmission lines unit, and the left-right-hand composite transmission line unit is: the left-handed materials capacitor C
L, the right-handed material inductance L
RAnd connect the back with the left-handed materials inductance L
L, the right-handed material capacitor C
RBe connected in series, determine the number of left-right-hand composite transmission line unit then according to needed notch depth.
The utlity model has low bandpass loss, big notch bandwidth, high notch depth; Cost is low, small-sized simultaneously, is convenient to make and integrated novel microwave trapper.
Description of drawings
Fig. 1 is the utility model left-right-hand composite transmission line cellular construction schematic diagram;
Fig. 2 is the utility model left-right-hand composite transmission line unit dispersion curve;
Fig. 3 is the trapper S that 20,40,60 left-right-hand composite transmission line unit of the utility model are formed
21The performance schematic diagram.
Embodiment
Left-right-hand composite transmission line of the present utility model unit is 20～60.The left-handed materials capacitor C
L=0.0015pF～1.593nF.The right-handed material inductance L
R=0.0192nH～0.9945 μ H.The left-handed materials inductance L
L=1.988 μ H～1.989 μ H.The right-handed material capacitor C
R=0.00519pF～0.0161pF.
As shown in Figure 1, in the left-right-hand composite transmission line unit: C
R, C
LBe electric capacity, L
R, L
LBe inductance.L
RWith C
RForm right-handed material, L
LWith C
LForm left-handed materials.The left-handed materials capacitor C
L, the right-handed material inductance L
RAnd connect the back with the left-handed materials inductance L
L, the right-handed material capacitor C
RSerial connection has been formed the left-right-hand composite transmission line unit.Signal is imported by port one, by port 2 outputs.Obtain required microwave trap performance index by selecting increase and decrease left-right-hand composite transmission line number of unit to connect.
Obtain left-right-hand composite transmission line dispersion curve as described in Figure 2 according to the required frequency of removing that falls into, thereby obtain the pairing capacitor C in left-right-hand composite transmission line unit
R, C
LAnd inductance L
R, L
LNumerical value, i.e. left-handed materials capacitor C
L=1.593nF, the right-handed material inductance L
R=0.0192nH, the left-handed materials inductance L
L=1.988 μ H, the right-handed material capacitor C
R=0.0161pF.Carry out the microwave trap of 20,40,60 left-right-hand composite transmission line cell design at last respectively, obtain as shown in Figure 3 microwave trap performance based on left-right-hand composite transmission line.
Claims (6)
1. the microwave trap based on left-right-hand composite transmission line is characterized in that, it has a plurality of left-right-hand composite transmission lines unit, and the left-right-hand composite transmission line unit is: the left-handed materials capacitor C
L, the right-handed material inductance L
RAnd connect the back with the left-handed materials inductance L
L, the right-handed material capacitor C
RSerial connection.
2. a kind of microwave trap based on left-right-hand composite transmission line according to claim 1 is characterized in that, described a plurality of left-right-hand composite transmission lines unit is 20～60.
3. a kind of microwave trap based on left-right-hand composite transmission line according to claim 1 is characterized in that, described left-handed materials capacitor C
L=0.0015pF～1.593nF.
4. a kind of microwave trap based on left-right-hand composite transmission line according to claim 1 is characterized in that, described right-handed material inductance L
R=0.0192nH～0.9945 μ H.
5. a kind of microwave trap based on left-right-hand composite transmission line according to claim 1 is characterized in that, described left-handed materials inductance L
L=1.988 μ H～1.989 μ H.
6. a kind of microwave trap based on left-right-hand composite transmission line according to claim 1 is characterized in that, described right-handed material capacitor C
R=0.00519pF～0.0161pF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520012718 CN2805106Y (en) | 2005-06-24 | 2005-06-24 | Microwave trap based upon right/left-hand compound transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520012718 CN2805106Y (en) | 2005-06-24 | 2005-06-24 | Microwave trap based upon right/left-hand compound transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2805106Y true CN2805106Y (en) | 2006-08-09 |
Family
ID=36910389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520012718 Expired - Fee Related CN2805106Y (en) | 2005-06-24 | 2005-06-24 | Microwave trap based upon right/left-hand compound transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2805106Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027632B (en) * | 2008-05-12 | 2013-10-30 | 松下电器产业株式会社 | Left-handed resonator and left-handed filter using same |
-
2005
- 2005-06-24 CN CN 200520012718 patent/CN2805106Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027632B (en) * | 2008-05-12 | 2013-10-30 | 松下电器产业株式会社 | Left-handed resonator and left-handed filter using same |
| US8604896B2 (en) | 2008-05-12 | 2013-12-10 | Panasonic Corporation | Left-handed resonator and left-handed filter using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |