CN104966869A - HTriple-band high performance filter set with one output selected from three paths - Google Patents
HTriple-band high performance filter set with one output selected from three paths Download PDFInfo
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Abstract
The invention provides a triple-band high performance filter set with one output selected from three paths, comprising a single-pole three-throw switch chip receiving an input signal, a UHF wave band semi-lumped semi-attached structure filter connected to a first output terminal of the single-pole three-throw switch chip, an S wave band distribution type structure filter which is connected to the second output terminal of the single-pole three-throw switch chip, and a VHF wave band full integration main structure which is connected to the third output terminal of the single-pole three-throw switch chip. The triple-band high performance filter set with one output selected from three paths is capable of selecting the corresponding frequency band output, easy in usage, light in weight, high in reliability, good in electric performance, simple in structure, high in yield, good in batch consistency, low in cost and stable in temperature.
Description
Technical field
The present invention relates to a kind of wave filter technology, the high performance filter group of the particularly free output of a kind of three passbands.
Background technology
In recent years, along with the developing rapidly of microminiaturization of mobile communication, satellite communication and Defensive Avionics System, high-performance, low cost and miniaturization have become the developing direction of microwave current/RF application, all have higher requirement to the performance of microwave device, size, reliability and cost.The development of material science and technology and electromagnetic technique is depended in the miniaturization of microwave device and lightweight, the size of device is substantially reduced, for the miniaturization of microwave passive component and lighting are had laid a good foundation based on low temperature co-fired technology (LTCC technology) sandwich construction.Filter is the important composition parts in various microwave integrated circuit always, and the leading indicator describing this component capabilities has: frequency range, insertion loss, standing-wave ratio, reflection coefficient, phase balance, temperature stability, volume, weight, reliability etc.
LTCC is a kind of Electronic Encapsulating Technology, adopts multi-layer ceramics technology, passive component can be built in medium substrate inside, and also active element can be mounted on substrate surface makes passive/active integrated functional module simultaneously.LTCC technology all shows many merits in cost, integration packaging, wiring live width and distance between centers of tracks, low impedance metal, design diversity and flexibility and high frequency performance etc., has become the mainstream technology of passive integration.The advantages such as it has high q-factor, is convenient to embedded passive device, and thermal diffusivity is good, and reliability is high, high temperature resistant, punching shake, utilize LTCC technology, can well process size little, precision is high, and tight type is good, the microwave device that loss is little.Because LTCC technology has the integrated advantage of 3 D stereo, be widely used for manufacturing various microwave passive components at microwave frequency band, the height realizing passive component is integrated.Based on the stack technology of LTCC technique, can realize three-dimensional integrated, thus size is little, lightweight, performance is excellent, reliability is high, batch production performance consistency is good and the plurality of advantages such as low cost to make various miniature orthogonal utensil have, utilize its three-dimensional integrated morphology feature, the high performance filter group that three passbands free export can be realized.
Summary of the invention
The object of the present invention is to provide the high performance filter group that a kind of three passbands free export, comprise: the SP3T switch chip of a reception input signal, the UHF waveband half lump half point Structure Filter be connected with SP3T switch chip first output, the S-band distributed frame filter be connected with SP3T switch chip second output, the VHF wave band complete or collected works general construction filter be connected with SP3T switch chip the 3rd output.This combination has can select the advantages such as corresponding band exports, volume is little, easy to use, lightweight, reliability is high, excellent electrical property, structure are simple, rate of finished products is high, batch consistency is good, cost is low, temperature performance is stable.
According to an aspect of the present invention, described UHF waveband half lump half point Structure Filter comprises: the first input end be connected with SP3T switch chip first output, be connected with first input end first inputs inductance, the first spiral inductance that inductance is connected is inputted with first, the triple helical inductance that inductance is connected is inputted with first, the first shunt capacitance be connected with the first spiral inductance output, the 3rd shunt capacitance be connected with the second spiral inductance output, one second output, the first outputting inductance be connected with the second output, the second spiral inductance be connected with the first outputting inductance, the 4th spiral inductance be connected with the first outputting inductance, the second shunt capacitance be connected with the second spiral inductance output, the 4th shunt capacitance be connected with the 4th spiral inductance output, be positioned at the first Z-type electric capacity below spiral inductance and shunt capacitance, described first spiral inductance, triple helical inductance be arranged in parallel up and down, described second spiral inductance, the 4th spiral inductance be arranged in parallel up and down, described first shunt capacitance, the second shunt capacitance, the 3rd shunt capacitance, the 4th shunt capacitance other end ground connection.
According to another aspect of the present invention, described S-band distributed frame filter comprises level Four resonance, every one-level resonance has three ply board, described S-band distributed frame filter also comprises: the 3rd input connected with SP3T switch chip second output, be connected with the 3rd input second inputs inductance, one the 4th output, the second outputting inductance be connected with the 4th output, is positioned at the second Z-type electric capacity below level Four resonance; The mesosphere board and second of described first order resonance inputs inductance and is connected; The mesosphere board of described fourth stage resonance is connected with the second outputting inductance.
According to another aspect of the present invention, described VHF wave band complete or collected works general construction filter comprises: the 5th input be connected with SP3T switch chip the 3rd output, the the first parallel resonance unit be connected with the 5th input, the the first series resonance unit be connected with the 5th input, the the second parallel resonance unit be connected with the first series resonance unit output, the the second series resonance unit be connected with the first series resonance unit output, the first zero electric capacity be connected with the first parallel resonance unit output, second minimum capacity in parallel with the first series resonance unit, the 3rd minimum capacity be connected with the second parallel resonance unit output, the four-zero point electric capacity in parallel with the second series resonance unit, described parallel resonance unit is that a spiral inductance and shunt capacitance compose in parallel, described series resonance unit is that a spiral inductance and shunt capacitance are composed in series.
The present invention compared with prior art, has the following advantages: the signal that in the frequency range that (1) Ke tri-tunnel is different, unrestricted choice exports; (2) easy to use; (3) volume is little, lightweight, reliability is high; (4) excellent electrical property; (5) cost is low; (6) circuit realiration structure is simple, can realize producing in enormous quantities.
Below in conjunction with Figure of description, the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the high performance filter group overall structure block diagram that the present invention three passband free exports.
Fig. 2 is the structural representation of SP3T switch chip WKD103000060 of the present invention.
Fig. 3 is the structural representation of UHF waveband half of the present invention lump half distribution Structure Filter.
Fig. 4 is the structural representation of S-band distributed frame filter of the present invention.
Fig. 5 is the structural representation of VHF wave band complete or collected works general construction filter of the present invention.
Fig. 6 is Insertion Loss and the stationary wave characteristic curve of UHF waveband half of the present invention lump half distribution Structure Filter.
Fig. 7 is Insertion Loss and the stationary wave characteristic curve of S-band distributed frame filter of the present invention.
Fig. 8 is Insertion Loss and the stationary wave characteristic curve of the full lumped filter of VHF wave band of the present invention.
Embodiment
Composition graphs 1, a kind of optional multiple frequency range high performance filter group, comprise: the SP3T switch chip of a reception input signal, the UHF waveband half lump half point Structure Filter be connected with SP3T switch chip first output, the S-band distributed frame filter be connected with SP3T switch chip second output, the VHF wave band complete or collected works general construction filter be connected with SP3T switch chip the 3rd output.Described SP3T switch chip is WKD102010040 chip, as shown in Figure 2, wherein three outputs RFout1, RFout2, RFout3 connect UHF waveband half lump half point Structure Filter, S-band distributed frame filter, VHF wave band complete or collected works general construction filter respectively.
Composition graphs 3, UHF waveband half lump half distribution Structure Filter comprises the input port P1 of surface-pasted 50 ohmages, the output port P2 of the first input inductance L in1, the first spiral inductance L1, connecting line T1, the first shunt capacitance C1, the second spiral inductance L2, connecting line T2, the second shunt capacitance C2, triple helical inductance L 3, connecting line T3, the 3rd shunt capacitance C3, the 4th spiral inductance L4, connecting line T4, the 4th shunt capacitance C4, shunt capacitance plate C5, the first Z-type electric capacity Z1, the first outputting inductance Lout1 and surface-pasted 50 ohmages.In UHF waveband half lump half distribution Structure Filter, first input inductance L in1 one end is connected with input port P1, its other end is connected with one end of the first spiral inductance L1, simultaneously, first shunt capacitance C1 is connected with this end of the first spiral inductance L1 by the first connecting line T1 again, wherein the first spiral inductance L1 hand of spiral from top to bottom, and totally 2 layers, the first shunt capacitance C1 divides upper and lower two-ply.The parallel below being placed in the first spiral inductance L1 of triple helical inductance L 3, the 3rd shunt capacitance C3 is parallel is placed in the below of the first shunt capacitance C1 and the 3rd shunt capacitance is connected with triple helical inductance L 3 by the 3rd connecting line T3.First outputting inductance Lout1 one end outputting inductance P2 is connected, and its other end is connected with one end of the second spiral inductance L2, and meanwhile, the second shunt capacitance C2 is connected with this end of the second spiral inductance L2 by the second connecting line T2 again.The parallel below being placed in the second spiral inductance L2 of 4th spiral inductance L4, the 4th shunt capacitance C4 is parallel is placed in the below of the second shunt capacitance C2 and the 4th shunt capacitance is connected with the 4th spiral inductance L4 by the 4th connecting line T4.First Z-type electric capacity Z1 is parallel to be placed in directly over the first spiral inductance L1, the second spiral inductance L2, the first shunt capacitance C1 and the second shunt capacitance C2.Shunt capacitance plate C5 is parallel to be placed in immediately below the 3rd shunt capacitance C3 and the 4th shunt capacitance C4.Wherein the first spiral inductance L1, the second spiral inductance L2 hand of spiral are all from top to bottom, triple helical inductance L 3, the 4th spiral inductance L4 hand of spiral are all from bottom to top, four inductance are all two-layer, first, second, third and fourth shunt capacitance C1, C2, C3 and C4 divide upper and lower two-ply, the lower plate earthing of each shunt capacitance.
Composition graphs 4, S-band distributed frame filter comprises the input port P3 of surface-pasted 50 ohmages, the output port P4 of the second input inductance L in2, Pyatyi resonant element U that strip line realizes, the second Z-type electric capacity Z2, the second outputting inductance Lout2 and surface-pasted 50 ohmages.In S-band distributed frame filter, second input inductance L in2 one end is connected with the input port P3 of surface-pasted 50 ohmages, its other end is connected with the first order intermediate plate M1 of Pyatyi resonant element U, and the intermediate plate M5 of Pyatyi resonant element U level V is connected by the second outputting inductance Lout2 with the output port P4 of surface-pasted 50 ohmages.Second Z-type electric capacity is placed in immediately below Pyatyi resonant element U.Wherein, the first order in Pyatyi resonant element U is made up of three ply board A1, M1 and B1, the second level is made up of three ply board A2, M2 and B2, and the third level is by three ply board A3, M3 and B3, and the fourth stage is be made up of three ply board A5, M5 and B5 by three ply board A4, M4 and B4 and level V.
In the present invention, the second input inductance L in2 structure is as follows: point to the direction of the 4th output port P4 for x-axis positive direction with the 3rd input port P3, be upwards y-axis positive direction perpendicular to x-axis, second input inductance L in2 is connected with four-input terminal mouth P4, and successively after y-axis positive direction, the bending of x-axis positive direction, be connected with the intermediate plate M1 of first order resonance.
In the present invention, the second outputting inductance Lout2 structure is as follows: the coordinate inputting inductance L in2 with second is standard, second outputting inductance Lout2 output is connected with the 4th output port P4, and is connected along y-axis positive direction, x-axis negative direction with the mesosphere board M5 of level V resonance successively.
Composition graphs 5, VHF wave band complete or collected works general construction filter comprises the input port P5 of surface-pasted 50 ohmages, the first parallel resonance unit L5, C5, first zero electric capacity C55, the first series resonance unit L6, C6, the second minimum capacity C66, the second parallel resonance unit L7, C7, the 3rd minimum capacity C77, the second series resonance unit L8, C8, four-zero point electric capacity C88 and surface-pasted 50 ohmage output port P6.In VHF wave band complete or collected works general construction filter, input port P5 is connected with first parallel resonance unit L5, C5, wherein first parallel resonance unit L5, C5 is composed in parallel by the 5th spiral inductance L5, the 5th shunt capacitance C5, and the 5th shunt capacitance C5 is set in parallel in the below of the 5th spiral inductance L5; First zero electric capacity C55 connects with Part I parallel resonance unit L5, C5 ground connection, and first zero electric capacity C55 is set in parallel in the below of the 5th shunt capacitance C5; First series resonance unit L6, C6 is connected with input port P5, and wherein first series resonance unit L6, C6 is composed in series by the 6th spiral inductance L6, the 6th series capacitance C6, and the 6th series capacitance C6 is set in parallel in the below of the 6th spiral inductance L6; Second minimum capacity C66 is in parallel with Part II series resonance unit L6, C6, and the second minimum capacity C66 is set in parallel in the below of the 6th spiral inductance L6, with the 6th series capacitance C6 at same plane; Second parallel resonance unit L7, C7 is connected with the 6th series capacitance C6 in first series resonance unit L6, C6, wherein second parallel resonance unit L7, C7 is composed in parallel by the 7th spiral inductance L7, the 7th shunt capacitance C7, and the 7th shunt capacitance C7 is set in parallel in the top of the 7th spiral inductance L7; 3rd minimum capacity C77 connects with Part III parallel resonance unit L7, C7 ground connection, and the 3rd minimum capacity C77 is set in parallel in the top of the 7th shunt capacitance C7; Second series resonance unit L8, C8 is connected with the second series capacitance C6 in first series resonance unit L6, C6, wherein Part IV series resonance unit L8, C8 is composed in series by the 8th spiral inductance L8, the 8th series capacitance C8, and the 8th series capacitance C8 is set in parallel in the top of the 8th spiral inductance L8; Four-zero point electric capacity C88 is in parallel with second series resonance unit L8, C8, and four-zero point electric capacity C44 is set in parallel in the top of the 8th spiral inductance L8, with the 8th series capacitance C8 at same plane; Output port P6 is connected with the 8th series capacitance C8.
The high performance filter group that three passbands free export, owing to being the realization of employing multilayer LTCC technique, its low-temperature co-burning ceramic material and metallic pattern sinter and form at about 900 DEG C of temperature, so have extreme high reliability and temperature stability, because structure adopts, 3 D stereo is integrated to be grounded with multilayer folding structure and outer surface metallic shield and to encapsulate, thus volume is significantly reduced.
In the present invention, SP3T switch chip WKD103000060 is 0/-5V or 5V/0V power work, insertion loss in DC ~ 6GHz: 0.9dB, isolation: 40dB, input vswr: 1.3:1, output VSWR: 1.3:1, switching time: 10ns.UHF waveband half lump half distribution Structure Filter is only 4.5mm*3.2mm*1.5mm, and its frequency range is at 750 ~ 1060MHz, and standing wave is at about 30dB.S-band distributed frame filter is only 4.5mm*3.2mm*1.5mm, and its performance can be found out from following figure, and frequency range is at 3 ~ 4.8GHz, and standing wave is at about 18dB.VHF wave band complete or collected works general construction filter is of a size of 6mm*8mm*2.3mm, its performance can from Fig. 6 to Fig. 8 find out, frequency range is 30 ~ 50MHz, and standing wave is at about 18dB.Add the insertion loss 0.9dB of SP3T switch chip WKD103000060 itself, be the last Insertion Loss selecting output signal.
Claims (4)
1. a high performance filter group for the free output of three passbands, is characterized in that, comprising:
The SP3T switch chip of one reception input signal,
The UHF waveband half lump half point Structure Filter be connected with SP3T switch chip first output,
The S-band distributed frame filter be connected with SP3T switch chip second output,
The VHF wave band complete or collected works general construction filter be connected with SP3T switch chip the 3rd output.
2. the high performance filter group of the free output of three passbands according to claim 1, it is characterized in that, described UHF waveband half lump half point Structure Filter comprises:
The first input end (P1) be connected with SP3T switch chip first output,
Be connected with first input end (P1) first inputs inductance (Lin1),
The first spiral inductance (L1) that inductance (Lin1) is connected is inputted with first,
The triple helical inductance (L3) that inductance (Lin1) is connected is inputted with first,
The first shunt capacitance (C1) be connected with the first spiral inductance (L1) output,
The 3rd shunt capacitance (C3) be connected with the second spiral inductance (L2) output,
One second output (P2),
The first outputting inductance (Lout1) be connected with the second output (P2),
The second spiral inductance (L2) be connected with the first outputting inductance (Lout1),
The 4th spiral inductance (L4) be connected with the first outputting inductance (Lout1),
The second shunt capacitance (C2) be connected with the second spiral inductance (L2) output,
The 4th shunt capacitance (C4) be connected with the 4th spiral inductance (L4) output,
Be positioned at the first Z-type electric capacity (Z1) below spiral inductance and shunt capacitance;
Described first spiral inductance (L1), triple helical inductance (L3) be arranged in parallel up and down;
Described second spiral inductance (L2), the 4th spiral inductance (L4) be arranged in parallel up and down;
Described first shunt capacitance (C1), the second shunt capacitance (C2), the 3rd shunt capacitance (C3), the 4th shunt capacitance (C4) other end ground connection.
3. the high performance filter group of the free output of three passbands according to claim 1, it is characterized in that, described S-band distributed frame filter comprises Pyatyi resonance, and every one-level resonance has three ply board, and described S-band distributed frame filter also comprises:
The 3rd input (P3) connected with SP3T switch chip second output,
Be connected with the 3rd input (P3) second inputs inductance (Lin2),
One the 4th output (P4),
The second outputting inductance (Lout2) be connected with the 4th output (P4),
Be positioned at the second Z-type electric capacity (Z2) below level Four resonance;
The mesosphere board (M1) and second of described first order resonance inputs inductance (Lin2) and is connected;
The mesosphere board (M5) of described level V resonance is connected with the second outputting inductance (Lout2).
4. the high performance filter group of the free output of three passbands according to claim 1, it is characterized in that, described VHF wave band complete or collected works general construction filter comprises:
The 5th input (P5) be connected with SP3T switch chip the 3rd output,
The the first parallel resonance unit be connected with the 5th input (P5),
The the first series resonance unit be connected with the 5th input (P5),
The the second parallel resonance unit be connected with the first series resonance unit output,
The the second series resonance unit be connected with the first series resonance unit output,
The first zero electric capacity (C55) be connected with the first parallel resonance unit output,
Second minimum capacity (C66) in parallel with the first series resonance unit,
The 3rd minimum capacity (C77) be connected with the second parallel resonance unit output,
The four-zero point electric capacity (C88) in parallel with the second series resonance unit;
Described parallel resonance unit is that a spiral inductance and shunt capacitance compose in parallel;
Described series resonance unit is that a spiral inductance and shunt capacitance are composed in series.
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Inventor after: Dai Yongsheng Inventor after: Yang Maoya Inventor after: Zhou Wei Inventor after: Li Bowen Inventor after: Chen Ye Inventor after: Liu Yi Inventor after: Qiao Dongchun Inventor before: Yang Maoya Inventor before: Zhou Wei Inventor before: Dai Yongsheng Inventor before: Li Bowen Inventor before: Chen Ye Inventor before: Liu Yi Inventor before: Qiao Dongchun |
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Application publication date: 20151007 |
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| WD01 | Invention patent application deemed withdrawn after publication |