CN105048046A - L-wave band built-in resistor multiphase power dividing filter set - Google Patents
L-wave band built-in resistor multiphase power dividing filter set Download PDFInfo
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Abstract
The present invention aims to provide an L-wave band built-in resistor multiphase power dividing filter set. The L-wave band built-in resistor multiphase power dividing filter set comprises an L-wave band power divider of receiving an input signal, two L-wave band couplers connected with the two output ends of the L-wave band power divider respectively, and four L-wave band balanced filters connected with the two output ends of the two L-wave band couplers respectively. The L-wave band built-in resistor multiphase power dividing filter set is small in loss and size, high in isolation degree, reliability and yield, light in weight, excellent in electrical property, simple in structure, good in batch consistency, low in cost and stable in temperature performance, can be orthogonal, can be in phase inversion, and is convenient to use.
Description
Technical field
The present invention relates to a kind of wave filter technology, particularly a kind of L-band built-in resistor leggy merit filter-divider group.
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.Power splitter, coupler and filter are the important composition parts in various microwave integrated circuit always, and the leading indicator describing this component capabilities has: frequency range, isolation, the degree of coupling, distribution loss, standing-wave ratio, insertion loss, 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, L-band built-in resistor leggy merit filter-divider group can be realized.
Summary of the invention
The object of the present invention is to provide a kind of L-band built-in resistor leggy merit filter-divider group, comprise the L-band power splitter of a reception input signal, two the L-band couplers be connected with L-band power splitter two outputs respectively, four the L-band balance filters be connected with each L-band coupler two outputs respectively.This combined loss is little, isolation is high, volume is little, can orthogonal, can paraphase, easy to use, lightweight, reliability is high, excellent electrical property, structure are simple, rate of finished products is high, batch consistency good, cost is low, temperature performance is stable.
According to an aspect of the present invention, described L-band power splitter comprises: first input end mouth, be connected with first input end mouth first inputs inductance, the first spiral inductance that inductance is connected is inputted respectively with first, second spiral inductance, the first outputting inductance be connected with the first spiral inductance output, the second output port is connected with the first outputting inductance other end, the second outputting inductance be connected with the second spiral inductance output, the 3rd output port be connected with the second outputting inductance other end, be positioned at the first spiral inductance and input with first the ground capacity that inductance is connected with below the second spiral inductance, respectively with the first outputting inductance, the electric capacity that second outputting inductance connects, to be positioned at below electric capacity and with an absorption resistance of Capacitance parallel connection, described first outputting inductance connects the upper plate of electric capacity, described second outputting inductance connects the lower plate of electric capacity.
According to another aspect of the present invention, described L-band coupler comprises: the four-input terminal be connected with L-band power splitter output, one coupled end, one isolation end, go side always, connect the double-stranded broadside coupled striplines ground floor coupling strip line of input and straight-through end, connect the double-stranded broadside coupled striplines second layer coupling strip line of isolation end and coupled end; The second layer of described double-stranded broadside coupled striplines is positioned at below ground floor.
According to another aspect of the present invention, described L-band balance filter comprises level Four resonance, every one-level resonance has three ply board, described L-band balance filter also comprises: the 8th input be connected with L-band coupler output, and be connected with the 8th input second inputs inductance, one the 9th output, the 3rd outputting inductance be connected with the 9th output, the tenth output, the 4th outputting inductance be connected with the tenth output, is positioned at the 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 3rd outputting inductance; The top plate of described fourth stage resonance or lower plywood are connected with the 4th outputting inductance.
The present invention compared with prior art, has the following advantages: (1) is easy to use, without the need to can directly use in the external load of power splitter; (2) leggy can be orthogonal and can paraphase; (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 L-band built-in resistor leggy merit filter-divider group overall structure block diagram of the present invention.
Fig. 2 is the structural representation of L-band built-in resistor power splitter of the present invention.
Fig. 3 is the structural representation of L-band coupler of the present invention.
Fig. 4 is the structural representation of L-band level Four resonance balance filter of the present invention.
Fig. 5 is the curve of the Insertion Loss of L-band built-in resistor power splitter of the present invention.
Fig. 6 is the curve of the isolation of L-band built-in resistor power splitter of the present invention.
Fig. 7 is the curve of the degree of coupling of L-band coupler of the present invention, standing wave and isolation.
Fig. 8 is the coupled end of L-band coupler of the present invention and the phase difference curve of isolation.
Fig. 9 is Insertion Loss and the stationary wave characteristic curve of L-band level Four resonance balance filter of the present invention.
Embodiment
Composition graphs 1, L-band built-in resistor leggy merit filter-divider group, comprising: a L-band power splitter, two L-band couplers, four L-band balance filters.L-band power splitter is connected with the input of the coupler of two L-bands respectively at two output port, and the straight-through end of two couplers and coupled end connect the level Four resonance balance filter of L-band.
Composition graphs 2, the power splitter of L-band built-in resistor comprises output port P2, P3 of surface-pasted 50 ohmage input port P1, the first input inductance L in1, the first spiral inductance L1, the second spiral inductance L2, ground capacity C1, shunt capacitance C2, built-in tantalum resistance R, the first outputting inductance Lout1, the second outputting inductance Lout2 and two surface-pasted 50 ohmage.First input inductance L in1 is connected with input port P1, first spiral inductance L1 and the second spiral inductance L2 lays respectively at the two ends of input inductance L in1, first spiral inductance L1 and the second spiral inductance L2 is helical structure (in the present invention from bottom to top, first spiral inductance L1 and the second spiral inductance L2 is four layers), first input inductance L in1 is connected with ground capacity C1 by a joint pin, first spiral inductance L1 is in parallel with the second spiral inductance L2, ground capacity C1 is positioned at the below of the first spiral inductance L1 and the second spiral inductance L2, absorption resistance R is parallel to the first spiral inductance L1 and the second spiral inductance L2 two ends, electric capacity C2 is in parallel with absorption resistance R, absorption resistance is positioned at immediately below shunt capacitance C2, one end of absorption resistance R is connected with the first outputting inductance Lout1, absorption resistance R the other end be connected with the second outputting inductance Lout2, first outputting inductance Lout1 is connected with surface-pasted 50 ohmage first output port P2, second outputting inductance Lout2 is connected with surface-pasted 50 ohmage second output port P3.
Composition graphs 3, the coupler of L-band comprises the four-input terminal mouth P4 of surface-pasted 50 ohmages, comprises surface-pasted 50 ohmage input port P1, the first matched line T1, ground floor double-stranded broadside coupled striplines U1, the second matched line T2, surface-pasted 50 ohmage straight-through port P5, surface-pasted 50 ohmage coupling port P6, the 3rd matched line T3, the second layer double-stranded broadside coupled striplines U2, the 4th matched line T4, surface-pasted 50 ohmage isolated port P7.In L-band coupler, first matched line T1 one end is connected with input port P4, the other end is connected with one end of the double-stranded broadside coupled striplines U1 of ground floor, the other end of the double-stranded broadside coupled striplines U1 of ground floor is connected with the second matched line T2, the other end of the second matched line T2 is connected with straight-through port P5, 3rd matched line T3 one end is connected with coupling port P6, the other end is connected with one end of the double-stranded broadside coupled striplines U2 of the second layer, the other end of the double-stranded broadside coupled striplines of the second layer is connected with one end of the 4th matched line T4, the other end of the 4th matched line T4 is connected with isolated port P7.
In the present invention, the ground floor of double-stranded broadside coupled striplines is identical with second layer structure, structure is as follows: using the line of the four-input terminal P4 of L-band coupler and coupled end P5 from left to right as the positive direction of x-axis, with x-axis vertically upward be y-axis forward, ground floor coupling strip line U1 input is connected with four-input terminal P4 by the first matched line T1, and successively along y-axis positive direction, x-axis positive direction, y-axis negative direction, x-axis positive direction, y-axis positive direction, x-axis positive direction, y-axis negative direction, x-axis positive direction, y-axis positive direction, x-axis positive direction, y-axis negative direction, x-axis positive direction, y-axis positive direction, x-axis positive direction, y-axis negative direction, x-axis positive direction, y-axis positive direction, x-axis positive direction bends, ground floor coupling strip line U1 output holds P7 to be connected by the 4th matched line T4 with straight-through, described second layer coupling strip line U2 input is connected with isolation end P6 by the 3rd matched line T4, and second layer coupling strip line U2 output is connected with coupled end P5 by the second matched line T2.
Composition graphs 4, the level Four filter of L-band comprises the 8th input port P8 of surface-pasted 50 ohmages, the level Four resonance level U3 that second input inductance L in2, strip line realize, Z-type electric capacity Z, one the 9th output P9, the a tenth output P10, is connected with the 9th output P9 and the 3rd outputting inductance Lout3 of surface-pasted 50 ohmages, is connected and the 4th outputting inductance Lout4 of surface-pasted 50 ohmages with the tenth output P10.Second input inductance L in2 one end is connected with input port P8, the second input inductance L in2 other end is connected with level Four resonance level U3, the other end of level Four resonance level U3 is connected with one end of the 3rd outputting inductance Lout3 and the 4th outputting inductance Lout4 again, the other end of the 3rd outputting inductance Lout3 is connected with surface-pasted 50 ohmages the 9th output port P9, and the other end of the 4th outputting inductance Lout4 is connected with surface-pasted 50 ohmages the tenth output port P10.Z-type electric capacity Z is positioned at immediately below level Four resonance level U.Wherein, the first order in level Four resonance level U3 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, the third level be made up of three ply board A3, M3 and B3 and the fourth stage be made up of three ply board A4, M4 and B4,3rd outputting inductance Lout3 connects with the intermediate plate M4 of the fourth stage, and the 4th outputting inductance Lout4 is connected with the top plate A4 of the fourth season.
In the present invention, the second input inductance L in2 structure is as follows: point to the direction of the 9th output port P9 for y-axis positive direction with the tenth output port P10, one is x-axis positive direction perpendicular to y-axis direction to the right, second input inductance L in2 is connected with the 8th input port P8, 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.
L-band built-in resistor leggy merit filter-divider group, 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, the size of L-band built-in resistor power splitter is only 3.2mm × 1.6mm × 0.9mm, and volume is little especially, and frequency range is at 1.2 ~ 1.6GHz, and center frequency points is at 1.4GHz, and at frequency range standing internal wave higher than 16.3dB, isolation is better than 14.5dB.The coupler volume of L-band is only 5.06mm*6.33mm*1.48mm, and its frequency range is 1.2 ~ 1.6GHz, and centre frequency is 1.4GHz, the degree of coupling is at 3 ± 0.5dB, input port standing wave reaches 1.3 higher than 17.5dB and standing-wave ratio, and isolation is better than 18dB, phase balance 90 ± 3 degree; The volume of L-band level Four resonance balance filter is only 4.5mm*3.5mm*1.5mm, and its frequency range is at 1.35 ~ 1.45GHz, and centre frequency is 1.4GHz, and two outputs overlap substantially, and standing wave is higher than 16dB.Three is combined, performance as seen from the figure, the waveform that butt coupling device leads directly to the level Four resonance balance filter output port P9 of end overlaps completely, the waveform exported from output port P10 also overlaps completely, from two output port P9, the waveform that P10 exports overlaps substantially, in like manner, the waveform of the level Four resonance balance filter output port P9 of butt coupling device coupled end overlaps completely, the waveform exported from output port P10 also overlaps completely, from two output port P9, the waveform that P10 exports overlaps substantially, and the phase place of waveform differs about 90 degree respectively, about 180 degree and about 270 degree.
Claims (5)
1. a L-band built-in resistor leggy merit filter-divider group, is characterized in that, comprising:
The L-band power splitter of one reception input signal,
Two the L-band couplers be connected with L-band power splitter two outputs respectively,
Four the L-band balance filters be connected with each L-band coupler two outputs respectively;
Described each L-band balance filter has two-way to export.
2. L-band built-in resistor leggy merit filter-divider group according to claim 1, it is characterized in that, described L-band power splitter comprises:
First input end mouth (P1),
Be connected with first input end mouth (P1) first inputs inductance (Lin1),
The first spiral inductance (L1), the second spiral inductance (L2) that inductance (Lin1) is connected is inputted respectively with first,
The first outputting inductance (Lout1) be connected with the first spiral inductance (L1) output,
The second output port (P2) is connected with the first outputting inductance (Lout1) other end,
The second outputting inductance (Lout2) be connected with the second spiral inductance (L2) output,
The 3rd output port (P3) be connected with the second outputting inductance (Lout2) other end,
Be positioned at the first spiral inductance (L1) and the second spiral inductance (L2) below and input with first the ground capacity (C1) that inductance (Lin1) is connected,
The electric capacity (C2) be connected with the first outputting inductance (Lout1), the second outputting inductance (Lout2) respectively,
Be positioned at electric capacity (C2) below and an absorption resistance (R) in parallel with electric capacity (C2);
Described first outputting inductance (Lout1) connects the upper plate of electric capacity (C2);
Described second outputting inductance (Lout2) connects the lower plate of electric capacity (C2).
3. L-band built-in resistor leggy merit filter-divider group according to claim 1, it is characterized in that, described L-band coupler comprises:
The four-input terminal (P4) be connected with L-band power splitter output,
One coupled end (P5),
One isolation end (P6),
Always go side (P7),
Connect the double-stranded broadside coupled striplines ground floor coupling strip line (U1) of input (P4) and straight-through end (P7),
Connect the double-stranded broadside coupled striplines second layer coupling strip line (U2) of isolation end (P6) and coupled end (P5);
The second layer of described double-stranded broadside coupled striplines is positioned at below ground floor.
4. L-band built-in resistor leggy merit filter-divider group according to claim 1, it is characterized in that, described L-band balance filter comprises level Four resonance, and every one-level resonance has three ply board, and described L-band balance filter also comprises:
The 8th input (P8) be connected with L-band coupler output,
Be connected with the 8th input (P8) second inputs inductance (Lin2),
One the 9th output (P9),
The 3rd outputting inductance (Lout3) be connected with the 9th output (P9),
The tenth output (P10),
The 4th outputting inductance (Lout4) be connected with the tenth output (P10),
Be positioned at the Z-type electric capacity (Z) below level Four resonance;
The mesosphere board (M1) and second of described first order resonance inputs inductance (Lin2) and is connected;
The mesosphere board (M4) of described fourth stage resonance is connected with the 3rd outputting inductance (Lout3);
The top plate (A4) of described fourth stage resonance or lower plywood (B4) are connected with the 4th outputting inductance (Lout4).
5. L-band built-in resistor leggy merit filter-divider group according to claim 3, it is characterized in that, the ground floor of described double-stranded broadside coupled striplines is identical with second layer structure, using the line of the four-input terminal (P4) of L-band coupler and coupled end (P5) from left to right as the positive direction of x-axis, with x-axis vertically upward be y-axis forward, ground floor coupling strip line (U1) input is connected with four-input terminal (P4) by the first matched line (T1), and successively along y-axis positive direction, x-axis positive direction, y-axis negative direction, x-axis positive direction, y-axis positive direction, x-axis positive direction, y-axis negative direction, x-axis positive direction, y-axis positive direction, x-axis positive direction, y-axis negative direction, x-axis positive direction, y-axis positive direction, x-axis positive direction, y-axis negative direction, x-axis positive direction, y-axis positive direction, x-axis positive direction bends, ground floor coupling strip line (U1) output holds (P7) to be connected by the 4th matched line (T4) with straight-through, described second layer coupling strip line (U2) input is connected with isolation end (P6) by the 3rd matched line (T4), and second layer coupling strip line (U2) output is connected with coupled end (P5) by the second matched line (T2).
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Inventor after: Dai Yongsheng Inventor after: Yang Maoya Inventor after: Zhou Wei Inventor after: Chen Ye Inventor after: Liu Yi Inventor after: Qiao Dongchun Inventor after: Li Bowen Inventor before: Yang Maoya Inventor before: Zhou Wei Inventor before: Dai Yongsheng Inventor before: Chen Ye Inventor before: Liu Yi Inventor before: Qiao Dongchun Inventor before: Li Bowen |
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Application publication date: 20151111 |