CN105048036A - S-band microwave self-load quadrature power divider - Google Patents
S-band microwave self-load quadrature power divider Download PDFInfo
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Abstract
The invention relates to an S-band microwave self-loading quadrature power divider which comprises a microwave power divider and two self-connected matched load directional couplers. The self-matched loading directional coupler comprises a surface-mounted input/output port, double-helix structured broadside coupled striplines and a matched load self-connected at an isolated port. The above structures are realized by a multilayer low-temperature co-fired ceramics technology. According to the invention, four routes have the same output signal power. The power divider requires no external load, can generate quadrature phase, is easy to debug, is light in weight, has high reliability, good electrical property, good temperature stability and good electrical property batch consistency, is low-cost, can be used for mass production and is suitable for occasions and corresponding systems of corresponding microwave frequency band communication, satellite communications and the like which have strict requirements on volume, electrical property, temperature stability and reliability.
Description
Technical field
The present invention relates to a kind of power splitter, particularly a kind of S-band microwave is from the orthogonal power splitter of load.
Background technology
Nowadays no matter be military radar, electron detection, electronic countermeasures etc., or civilian mobile communication, TV, remote control, all need electronic signal allocation process, this just needs to use a kind of important microwave passive component-power divider (power splitter).It is an a kind of microwave network road signal being divided into two-way or multiple signals, if reversed use, be then power combiner several signals being synthesized a road signal, present power splitter has been widely used in various electronic equipment.
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 power splitter, size, reliability and cost.Coupler is the important composition parts in various microwave integrated circuit always, because straightthrough port is different from the output of coupling aperture, is therefore connected with power splitter by coupler, can expand the scope of application of power splitter.
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 microwave power distributor have, utilize its three-dimensional integrated morphology feature, the orthogonal power splitter of microwave can be realized.But there is no a kind of S-band microwave in prior art from the orthogonal power splitter of load.
Summary of the invention
The object of the present invention is to provide and a kind ofly realize that volume is little, lightweight, reliability is high by strip lines configuration and the directional coupler that certainly connects matched load, excellent electrical property, the S-band microwave that easy to use, applied widely, rate of finished products is high, batch consistency is good, cost is low, temperature performance is stable be from the orthogonal power splitter of load.
The technical solution realizing the object of the invention is: a kind of S-band microwave is from the orthogonal power splitter of load, comprise microwave power distributor and two from the directional coupler connecing matched load, described microwave power distributor comprises surface-pasted 50 ohmage first input end mouths, input inductance, λ/4 transmission line, the 2nd λ/4 transmission line, 100 Ohmic resistances, the first outputting inductance, the second outputting inductance, surface-pasted 50 ohmage first output ports, surface-pasted 50 ohmage second output port and earth terminals.Wherein, input inductance left end is connected with surface-pasted 50 ohmage first input end mouths, right-hand member is connected with λ/4 transmission line, the 2nd λ/4 transmission line, the other end of the one λ/4 transmission line is connected with 100 Ohmic resistance one end, and the 2nd λ/4 transmission line other end is connected with the 100 Ohmic resistance other ends.First outputting inductance left end is connected with λ/4 transmission line, right-hand member is connected with surface-pasted 50 ohmage first output ports, second outputting inductance left end is connected with the 2nd λ/4 transmission line, and right-hand member is connected with surface-pasted 50 ohmage second output ports.Surface-pasted 50 ohmage second input ports are comprised from the first directional coupler connecing matched load, first matched line, surface-pasted 50 ohmage first straight-through ports, second matched line, surface-pasted 50 ohmage first coupling port, 3rd matched line, surface-pasted 50 ohmage first isolated ports, 4th matched line, first double-stranded broadside coupled striplines, second double-stranded broadside coupled striplines, first tantalum resistance and earth terminal, wherein, the first double-stranded broadside coupled striplines is positioned at directly over the second double-stranded broadside coupled striplines, the first matched line, second double-stranded broadside coupled striplines and the second matched line are at same plane, first matched line is connected with surface-pasted 50 ohmage second input ports, second matched line is connected with surface-pasted 50 ohmage first straight-through ports, second double-stranded broadside coupled striplines left end is connected with the first matched line, and the second double-stranded broadside coupled striplines right-hand member is connected with the second matched line, 3rd matched line, the first double-stranded broadside coupled striplines and the 4th matched line are at same plane, 3rd matched line is connected with surface-pasted 50 ohmage first coupling port, 4th matched line is connected with surface-pasted 50 ohmage first isolated ports, first double-stranded broadside coupled striplines left end is connected with the 3rd matched line, first double-stranded broadside coupled striplines right-hand member is connected with the 4th matched line, and the two ends of the first tantalum resistance are connected with surface-pasted 50 ohm of first isolated port and earth terminal respectively.Surface-pasted 50 ohmages the 3rd input port is comprised from the second directional coupler connecing matched load, 5th matched line, surface-pasted 50 ohmage second straight-through ports, 6th matched line, surface-pasted 50 ohmage second coupling port, 7th matched line, surface-pasted 50 ohmage second isolated ports, 8th matched line, 3rd double-stranded broadside coupled striplines, 4th double-stranded broadside coupled striplines, second tantalum resistance and earth terminal, wherein, the 3rd double-stranded broadside coupled striplines is positioned at directly over the 4th double-stranded broadside coupled striplines, the 5th matched line, 4th double-stranded broadside coupled striplines and the 6th matched line are at same plane, 5th matched line is connected with surface-pasted 50 ohmages the 3rd input port, 6th matched line is connected with surface-pasted 50 ohmage second straight-through ports, 4th double-stranded broadside coupled striplines left end is connected with the 5th matched line, and the 4th double-stranded broadside coupled striplines right-hand member is connected with the 6th matched line, 7th matched line, the 3rd double-stranded broadside coupled striplines and the 8th matched line are at same plane, 7th matched line is connected with surface-pasted 50 ohmage second coupling port, 8th matched line is connected with surface-pasted 50 ohmage second isolated ports, 3rd double-stranded broadside coupled striplines left end is connected with the 7th matched line, 3rd double-stranded broadside coupled striplines right-hand member is connected with the 8th matched line, and the two ends of the second tantalum resistance are connected with surface-pasted 50 ohm of second isolated port and earth terminal respectively.First output port of microwave power distributor is connected with the second input port from the first directional coupler connecing matched load, and the second output port is connected with the 3rd input port from the second directional coupler connecing matched load.
Compared with prior art, its remarkable advantage is in the present invention: (1) due to the present invention adopt low-loss low-temperature co-burning ceramic material and 3 D stereo integrated, therefore band in smooth; (2) without the need to external load; (3) shape can be produced identical, the signal waveform that phase is 90 degree; (4) lightweight, reliability is high; (5) excellent electrical property; (6) circuit realiration structure is simple, can realize producing in enormous quantities; (7) cost is low.
Accompanying drawing explanation
Fig. 1 (a) is the appearance schematic diagram of a kind of S-band of the present invention microwave from the orthogonal power splitter of load.
Fig. 1 (b) is profile and the internal structure schematic diagram of a kind of S-band of the present invention microwave microwave power distributor in the orthogonal power splitter of load.
Fig. 1 (c) is profile and the internal structure schematic diagram that a kind of S-band of the present invention microwave certainly connects the first directional coupler of matched load in the orthogonal power splitter of load.
Fig. 1 (d) is profile and the internal structure schematic diagram that a kind of S-band of the present invention microwave certainly connects the second directional coupler of matched load in the orthogonal power splitter of load.
Fig. 2 is the amplitude-versus-frequency curve of a kind of S-band microwave of the present invention from the orthogonal power splitter straightthrough port (P5, P9) of load, coupling aperture (P6, P10).
Fig. 3 is the stationary wave characteristic curve of a kind of S-band of the present invention microwave from the orthogonal power splitter input port of load.
Fig. 4 is that a kind of S-band microwave of the present invention is from the phase difference curve of the orthogonal power splitter straightthrough port (P5) of load with coupling aperture (P6) and the phase difference curve of straightthrough port (P9) and coupling aperture (P10).
Fig. 5 is that a kind of S-band microwave of the present invention is from the phase difference curve of load orthogonal power splitter first straightthrough port (P5) with the second straightthrough port (P9) and the phase difference curve of the first coupling aperture (P6) and the second coupling aperture (P10).
Embodiment
Composition graphs 1 (a), Fig. 1 (b), Fig. 1 (c), Fig. 1 (d), a kind of S-band microwave of the present invention is from the orthogonal power splitter of load, and the microwave power distributor of this orthogonal power splitter comprises surface-pasted 50 ohmage first input end mouth P1, input inductance L in, a λ/4 transmission line S1, the 2nd λ/4 transmission line S2,100 Ohmic resistance R1, the first outputting inductance Lout1, the second outputting inductance Lout2, surface-pasted 50 ohmage first output port P2, surface-pasted 50 ohmage second output port P3 and earth terminals.Wherein, input inductance L in left end is connected with surface-pasted 50 ohmage first input end mouth P1, right-hand member is connected with a λ/4 transmission line S1, the 2nd λ/4 transmission line S2, the other end of the one λ/4 transmission line S1 is connected with 100 Ohmic resistance R1 one end, and the 2nd λ/4 transmission line S2 other end is connected with the 100 Ohmic resistance R1 other ends.First outputting inductance Lout1 left end is connected with a λ/4 transmission line S1, right-hand member is connected with surface-pasted 50 ohmage first output port P2, second outputting inductance Lout2 left end is connected with the 2nd λ/4 transmission line S2, and right-hand member is connected with surface-pasted 50 ohmage second output port P3.Surface-pasted 50 ohmage second input port P4 are comprised from the first directional coupler D1 connecing matched load, first matched line L1, surface-pasted 50 ohmage first straight-through port P5, second matched line L2, surface-pasted 50 ohmage first coupling port P6, 3rd matched line L3, surface-pasted 50 ohmage first isolated port P7, 4th matched line L4, first double-stranded broadside coupled striplines U1, second double-stranded broadside coupled striplines U2, first tantalum resistance R2 and earth terminal, wherein, first double-stranded broadside coupled striplines U1 is vertically positioned at above the second double-stranded broadside coupled striplines U2, first matched line L1, second double-stranded broadside coupled striplines U2 and the second matched line L2 is at same plane, first matched line L1 is connected with surface-pasted 50 ohmage second input port P4, second matched line L2 is connected with surface-pasted 50 ohmage first straight-through port P5, second double-stranded broadside coupled striplines U2 left end is connected with the first matched line L1, second double-stranded broadside coupled striplines U2 right-hand member is connected with the second matched line L2, 3rd matched line L3, first double-stranded broadside coupled striplines U1 and the 4th matched line L4 is at same plane, 3rd matched line L3 is connected with surface-pasted 50 ohmage first coupling port P6, 4th matched line L4 is connected with surface-pasted 50 ohmage first isolated port P7, first double-stranded broadside coupled striplines U1 left end is connected with the 3rd matched line L3, first double-stranded broadside coupled striplines U1 right-hand member is connected with the 4th matched line L4, the two ends of the first tantalum resistance R2 are connected with surface-pasted 50 ohm of first isolated port P7 and earth terminal respectively.Surface-pasted 50 ohmages the 3rd input port P8 is comprised from the second directional coupler D2 connecing matched load, 5th matched line L5, surface-pasted 50 ohmage second straight-through port P9, 6th matched line L6, surface-pasted 50 ohmage second coupling port P10, 7th matched line L7, surface-pasted 50 ohmage second isolated port P11, 8th matched line L8, 3rd double-stranded broadside coupled striplines U3, 4th double-stranded broadside coupled striplines U4, second tantalum resistance R3 and earth terminal, wherein, 3rd double-stranded broadside coupled striplines U3 is vertically positioned at above the 4th double-stranded broadside coupled striplines U4, 5th matched line L5, 4th double-stranded broadside coupled striplines U4 and the 6th matched line L6 is at same plane, 5th matched line L5 is connected with surface-pasted 50 ohmages the 3rd input port P8, 6th matched line L6 is connected with surface-pasted 50 ohmage second straight-through port P9, 4th double-stranded broadside coupled striplines U4 left end is connected with the 5th matched line L5, 4th double-stranded broadside coupled striplines U4 right-hand member is connected with the 6th matched line L6, 7th matched line L7, 3rd double-stranded broadside coupled striplines U3 and the 8th matched line L8 is at same plane, 7th matched line L7 is connected with surface-pasted 50 ohmage second coupling port P10, 8th matched line L8 is connected with surface-pasted 50 ohmage second isolated port P11, 3rd double-stranded broadside coupled striplines U3 left end is connected with the 7th matched line L7, 3rd double-stranded broadside coupled striplines U3 right-hand member is connected with the 8th matched line L8, the two ends of the second tantalum resistance R3 are connected with surface-pasted 50 ohm of second isolated port P11 and earth terminal respectively.First output port P2 of microwave power distributor is connected with the second input port P4 from the first directional coupler D1 connecing matched load, and the second output port P3 is connected with the 3rd input port P8 from the second directional coupler D2 connecing matched load.
Composition graphs 1 (a), Fig. 1 (b), Fig. 1 (c), Fig. 1 (d), described surface-pasted 50 ohmage input port (P1, P4, P8), input inductance L in, λ/4 transmission line (S1, S2), outputting inductance (Lout1, Lout2), surface-pasted 50 ohmage output port (P2, P3), surface-pasted 50 ohmage straight-through port (P5, P9), surface-pasted 50 ohmage coupling port (P6, P10), surface-pasted 50 ohmage isolated port (P7, P11), matched line (L1, L2, L3, L4, L5, L6, L7, L8), double-stranded broadside coupled striplines (U1, U2, U3, U4) and earth terminal all adopt multilayer LTCC technique to realize.
Described first input end mouth P1 is by an input inductance L in and λ/4 transmission line S1,2nd λ/4 transmission line S2 connects, first output port P2 is connected with a λ/4 transmission line S1 by the first outputting inductance Lout1, second output port P3 is connected with the 2nd λ/4 transmission line S2 by the second outputting inductance Lout2, second input port P4 is connected with the second double-stranded broadside coupled striplines U2 by the first matched line L1, first straight-through port P5 is connected with the second double-stranded broadside coupled striplines U2 by the second matched line L2, first coupling port P6 is connected with the first double-stranded broadside coupled striplines U1 by the 3rd matched line L3, first isolated port P7 is connected with the first double-stranded broadside coupled striplines U1 by the 4th matched line L4, first isolated port P7 is connected with earth terminal by the first tantalum resistance R2,3rd input port P8 is connected with the 4th double-stranded broadside coupled striplines U4 by the 5th matched line L5, second straight-through port P9 is connected with the 4th double-stranded broadside coupled striplines U4 by the 6th matched line L6, second coupling port P10 is connected with the broadside coupled striplines U3 of triple-helix structure by the 7th matched line L7, second isolated port P11 is connected with the broadside coupled striplines U3 of triple-helix structure by the 8th matched line L8, second isolated port P11 is connected with earth terminal by the second tantalum resistance R3.
A kind of S-band microwave of the present invention is from the orthogonal power splitter of load, 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.
The size of a kind of S-band microwave of the present invention microwave power distributor in the orthogonal power splitter of load is only 14mm × 12.9mm × 1.6mm, the size of directional coupler is only 3.2mm × 1.6mm × 1.5mm, its performance can from Fig. 2, Fig. 3, Fig. 4, Fig. 5 finds out, pass band width is 2.6GHz ~ 3.0GHz, straightthrough port P5, coupling aperture P6, straightthrough port P9, the output waveform of coupling aperture P10 in passband is basically identical, input port return loss is better than 15dB, in passband, the phase difference of straightthrough port P5 and coupling aperture P6 is approximately 90 degree, the phase difference of straightthrough port P9 and coupling aperture P10 is approximately 90 degree, straightthrough port P5 is identical with the phase approximation of straightthrough port P9, coupling aperture P6 is identical with the phase approximation of coupling aperture P10.
Claims (3)
1. a S-band microwave is from the orthogonal power splitter of load, it is characterized in that: comprise microwave power distributor and two from the directional coupler connecing matched load, described microwave power distributor comprises surface-pasted 50 ohmage first input end mouths (P1), input inductance (Lin), one λ/4 transmission line (S1), 2nd λ/4 transmission line (S2), 100 Ohmic resistances (R1), first outputting inductance (Lout1), second outputting inductance (Lout2), surface-pasted 50 ohmage first output ports (P2), surface-pasted 50 ohmage second output port (P3) and earth terminals, wherein, input inductance (Lin) left end is connected with surface-pasted 50 ohmage first input end mouths (P1), right-hand member and λ/4 transmission line (S1), 2nd λ/4 transmission line (S2) connects, the other end of the one λ/4 transmission line (S1) is connected with 100 Ohmic resistances (R1) one end, 2nd λ/4 transmission line (S2) other end is connected with 100 Ohmic resistances (R1) other end, first outputting inductance (Lout1) one end is connected with λ/4 transmission line (S1), the other end is connected with surface-pasted 50 ohmage first output ports (P2), second outputting inductance (Lout2) one end is connected with the 2nd λ/4 transmission line (S2), the other end is connected with surface-pasted 50 ohmage second output ports (P3),
Surface-pasted 50 ohmage second input ports (P4) are comprised from the first directional coupler (D1) connecing matched load, first matched line (L1), surface-pasted 50 ohmage first straight-through ports (P5), second matched line (L2), surface-pasted 50 ohmage first coupling port (P6), 3rd matched line (L3), surface-pasted 50 ohmage first isolated ports (P7), 4th matched line (L4), first double-stranded broadside coupled striplines (U1), second double-stranded broadside coupled striplines (U2), first tantalum resistance (R2) and earth terminal, wherein, first double-stranded broadside coupled striplines (U1) is vertically positioned at the second double-stranded broadside coupled striplines (U2) top, first matched line (L1), second double-stranded broadside coupled striplines (U2) and the second matched line (L2) are at same plane, first matched line (L1) is connected with surface-pasted 50 ohmage second input ports (P4), second matched line (L2) is connected with surface-pasted 50 ohmage first straight-through ports (P5), second double-stranded broadside coupled striplines (U2) left end is connected with the first matched line (L1), second double-stranded broadside coupled striplines (U2) right-hand member is connected with the second matched line (L2), 3rd matched line (L3), first double-stranded broadside coupled striplines (U1) and the 4th matched line (L4) are at same plane, 3rd matched line (L3) is connected with surface-pasted 50 ohmage first coupling port (P6), 4th matched line (L4) is connected with surface-pasted 50 ohmage first isolated ports (P7), first double-stranded broadside coupled striplines (U1) left end is connected with the 3rd matched line (L3), first double-stranded broadside coupled striplines (U1) right-hand member is connected with the 4th matched line (L4), the two ends of the first tantalum resistance (R2) are connected with surface-pasted 50 ohm of first isolated port (P7) and earth terminal respectively,
Surface-pasted 50 ohmages the 3rd input port (P8) are comprised from the second directional coupler (D2) connecing matched load, 5th matched line (L5), surface-pasted 50 ohmage second straight-through ports (P9), 6th matched line (L6), surface-pasted 50 ohmage second coupling port (P10), 7th matched line (L7), surface-pasted 50 ohmage second isolated ports (P11), 8th matched line (L8), 3rd double-stranded broadside coupled striplines (U3), 4th double-stranded broadside coupled striplines (U4), second tantalum resistance (R3) and earth terminal, wherein, 3rd double-stranded broadside coupled striplines (U3) is vertically positioned at the 4th double-stranded broadside coupled striplines (U4) top, 5th matched line (L5), 4th double-stranded broadside coupled striplines (U4) and the 6th matched line (L6) are at same plane, 5th matched line (L5) is connected with surface-pasted 50 ohmages the 3rd input port (P8), 6th matched line (L6) is connected with surface-pasted 50 ohmage second straight-through ports (P9), 4th double-stranded broadside coupled striplines (U4) left end is connected with the 5th matched line (L5), 4th double-stranded broadside coupled striplines (U4) right-hand member is connected with the 6th matched line (L6), 7th matched line (L7), 3rd double-stranded broadside coupled striplines (U3) and the 8th matched line (L8) are at same plane, 7th matched line (L7) is connected with surface-pasted 50 ohmage second coupling port (P10), 8th matched line (L8) is connected with surface-pasted 50 ohmage second isolated ports (P11), 3rd double-stranded broadside coupled striplines (U3) left end is connected with the 7th matched line (L7), 3rd double-stranded broadside coupled striplines (U3) right-hand member is connected with the 8th matched line (L8), the two ends of the second tantalum resistance (R3) are connected with surface-pasted 50 ohm of second isolated port (P11) and earth terminal respectively,
First output port (P2) of microwave power distributor is connected with the second input port (P4) from the first directional coupler (D1) connecing matched load, and the second output port (P3) is connected with the 3rd input port (P8) from the second directional coupler (D2) connecing matched load.
2. a kind of S-band microwave according to claim 1 is from the orthogonal power splitter of load, it is characterized in that: comprise surface-pasted 50 ohmage input ports, input inductance (Lin), λ/4 transmission line, outputting inductance, surface-pasted 50 ohmage output ports, surface-pasted 50 ohmage straight-through ports, surface-pasted 50 ohmage coupling port, surface-pasted 50 ohmage isolated ports, matched line, double-stranded broadside coupled striplines and earth terminal and all adopt multilayer LTCC technique to realize.
3. a kind of S-band microwave according to claim 1 and 2 is from the orthogonal power splitter of load, it is characterized in that: first input end mouth (P1) is by input inductance (Lin) and λ/4 transmission line (S1), 2nd λ/4 transmission line (S2) connects, first output port (P2) is connected with λ/4 transmission line (S1) by the first outputting inductance (Lout1), second output port (P3) is connected with the 2nd λ/4 transmission line (S2) by the second outputting inductance (Lout2), second input port (P4) is connected with the second double-stranded broadside coupled striplines (U2) by the first matched line (L1), first straight-through port (P5) is connected with the second double-stranded broadside coupled striplines (U2) by the second matched line (L2), first coupling port (P6) is connected with the first double-stranded broadside coupled striplines (U1) by the 3rd matched line (L3), first isolated port (P7) is connected with the first double-stranded broadside coupled striplines (U1) by the 4th matched line (L4), first isolated port (P7) is connected with earth terminal by the first tantalum resistance (R2), 3rd input port (P8) is connected with the 4th double-stranded broadside coupled striplines (U4) by the 5th matched line (L5), second straight-through port (P9) is connected with the 4th double-stranded broadside coupled striplines (U4) by the 6th matched line (L6), second coupling port (P10) is connected with the broadside coupled striplines (U3) of triple-helix structure by the 7th matched line (L7), second isolated port (P11) is connected with the broadside coupled striplines (U3) of triple-helix structure by the 8th matched line (L8), second isolated port (P11) is connected with earth terminal by the second tantalum resistance (R3).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275554A (en) * | 2021-04-29 | 2022-11-01 | 中国电子科技集团公司第三十六研究所 | 3dB directional coupler |
| CN115275554B (en) * | 2021-04-29 | 2023-11-21 | 中国电子科技集团公司第三十六研究所 | 3dB directional coupler |
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