CN102509841A - C-band multi-octave miniature directional coupler - Google Patents
C-band multi-octave miniature directional coupler Download PDFInfo
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- CN102509841A CN102509841A CN201110331733XA CN201110331733A CN102509841A CN 102509841 A CN102509841 A CN 102509841A CN 201110331733X A CN201110331733X A CN 201110331733XA CN 201110331733 A CN201110331733 A CN 201110331733A CN 102509841 A CN102509841 A CN 102509841A
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Abstract
The utility model relates to a C-band multi-octave miniature directional coupler, which comprises 50-ohm input-output ports installed on four surfaces, an asymmetrical strip-shaped wire, a three-dimensional folding structure coupled strip-shaped wire and a ground plate. All the structures are achieved by adopting multilayer high frequency low-loss medium lamination process technology. The C-band multi-octave miniature directional coupler has the advantages of being wide in working band, small in size, high in reliability, excellent in electrical performance, good in broadband phase orthogonality of direct connection and a coupling port, small in amplitude deviation of the direct connection and the coupling port, good in temperature stability, good in radiating performance, simple in structure, high in finished product radio, good in electric performance index consistency of mass production, low in cost, convenient to install and use and capable of being widely applied to communication, radar and wireless systems with corresponding frequency band.
Description
Technical field
The present invention relates to communication and field of radar, relate in particular to the C-band multi-octave miniature directional coupler that is used to communicate by letter with field of radar.
Background technology
Microwave directive coupler is used for radio frequency, microwave system, is used to carry out that the signal power branch fits in, power sampling and detection, balance amplifier, analog-and digital-phase shifter, analog-and digital-attenuator etc.Typical microwave directive coupler comes down in specific frequency range input signal branch success rate is become four port networks of two output signals of special ratios, and is same, uses the effect that just has power synthetic conversely.There is narrow bandwidth in conventional method for designing with the directional coupler of technology realization, volume is big, cost is high and be not suitable for shortcoming such as production in enormous quantities.C-band multi-octave miniature directional coupler is important electron parts in the microwave system, and the key technical indexes of describing this component capabilities has: operating frequency range, input/output voltage standing-wave ratio, insertion loss, isolation, amplitude balance and phase equilibrium characteristic, temperature stability, volume, weight, reliability etc.
Summary of the invention
The object of the present invention is to provide that volume is little, in light weight, reliability is high, electrical property is excellent, simple in structure, rate of finished products is high, in batches low, the temperature performance of high conformity, cost stable high, operating frequency range is wide, insert that loss is little, isolation is high, amplitude balance and the good C-band multi-octave three decibels miniature directional coupler of phase equilibrium characteristic.
The technical scheme that realizes the object of the invention is: a kind of C-band multi-octave miniature directional coupler; This coupler comprises the input of 50 ohmages, first output port, the first asymmetric strip line, coupling strip line, the 4th asymmetric strip line, the 50 ohmages input of the 4th mounted on surface, the 4th output port that first surface is installed; The input of 50 ohmages, the 3rd output port and the earth terminal of the 50 ohmages input that the second asymmetric strip line, second surface are installed, second output port, the 3rd asymmetric strip line, the 3rd mounted on surface; The 50 ohmages input that first surface is installed, first input end mouth connect the coupling strip line upper strata through the first asymmetric strip line a end; Connect through two transition bands between three coupling strip lines; The other end on coupling strip line upper strata connects the input of 50 ohmages, the 4th port of the 4th mounted on surface through the 4th asymmetric strip line; The 50 ohmages input that second surface is installed, second output port connect an end of coupling strip line lower floor through the second asymmetric strip line, and the other end of coupling strip line lower floor connects the input of 50 ohmages, the 3rd output port of the 3rd mounted on surface through the 3rd asymmetric strip line.
The present invention relates to a kind of C-band multi-octave miniature directional coupler, comprise 50 ohm of inputs, the output interface of four mounted on surface; Asymmetric strip line, spatial folding structure coupling strip line, ground plate; Said structure all adopts multilayer high-frequency low-consumption dielectric stack technology to realize; C-band multi-octave miniature directional coupler of the present invention has that working band is wide, size is little, reliability is high, electrical property is excellent, straight-through and coupling port wideband phase orthogonality is good; Straight-through little with the coupling port amplitude error; Temperature stability is good, perfect heat-dissipating, simple in structure, rate of finished products is high, produce the electrical performance indexes high conformity in batches, cost is low and advantage such as easy to install, can be widely used in the communication and radar and wireless system of corresponding band.
The present invention compared with prior art; Owing to adopt 50 ohm of inputs, output interface, asymmetric strip line, the spatial folding structure coupling strip line of mounted on surface and utilize ground plate directly as a series of technical measures of outer package; And adopt multilayer high-frequency low-consumption dielectric stack technology to realize its structure, make it have following remarkable advantage: (1) work zone wide (2) reliability is high; (3) electrical property is excellent; (4) perfect heat-dissipating (5) electrical property temperature stability is high; (6) the circuit implementation structure is simple; (7) electrical property consistency is good, can realize producing in enormous quantities; (8) cost is low; (9) easy to install and use, can install and welding with full-automatic chip mounter.
Description of drawings
Fig. 1 is the electrical schematic diagram of C-band multi-octave miniature directional coupler of the present invention.
Fig. 2 is the profile and the internal structure sketch map of C-band multi-octave miniature directional coupler of the present invention.
Fig. 3 is the coupling strip line structural representation of C-band multi-octave miniature directional coupler of the present invention.
Fig. 4 is the asymmetric strip lines configuration sketch map of C-band multi-octave miniature directional coupler of the present invention.
Fig. 5 is the main performance test result of C-band multi-octave miniature directional coupler embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4; C-band multi-octave miniature directional coupler of the present invention; Comprise 50 ohmage input/output ports, four P4 of 50 ohmages input that first surface installs, the first output port P1, the first asymmetric strip line TL1, the first spatial folding structure coupling strip line CL1, the second spatial folding structure coupling strip line CL2, the 3rd spatial folding structure coupling strip line CL3, the 4th asymmetric strip line TL4, the 4th mounted on surface, 50 ohmages of the 50 ohmages input that the second asymmetric strip line TL2, second surface are installed, output port P2, the 3rd asymmetric strip line TL3, the 3rd mounted on surface are imported, the 3rd output port P3 and earth terminal Ground; The 50 ohmages input that first surface is installed, the first output port P1 connect the first spatial folding structure coupling strip line CL1 upper strata through the first asymmetric strip line TL1 a end; The two ends of the first spatial folding structure coupling strip line CL1 connect the two ends of the second spatial folding structure coupling strip line CL2 through a transition band; The two ends of the second spatial folding structure coupling strip line CL2 connect the two ends of the 3rd spatial folding structure coupling strip line CL3 through a transition band; The other end on the 3rd coupling strip line CL3 upper strata meets the input of 50 ohmages, the 4th output port P4 of the 4th mounted on surface through the 3rd asymmetric strip line TL3; 50 ohmages, the second output port P2 that second surface is installed connects an end of the first spatial folding structure coupling strip line CL1 lower floor through the second asymmetric strip line TL2, and the other end of the 3rd spatial folding structure coupling strip line CL3 lower floor meets the input of 50 ohmages, the 3rd output port P3 of the 3rd mounted on surface through the 3rd asymmetric strip line TL3.
C-band multi-octave miniature directional coupler of the present invention; The input of 50 ohmages, the 3rd output port P3 and earth terminal Ground and the spatial folding structure coupling strip line CL of the 50 ohmages input that the 50 ohmages input of the 50 ohmages input that first surface is installed, the first output port P1, the first asymmetric strip line TL1, the first spatial folding structure coupling strip line CL1, the second spatial folding structure coupling strip line CL2, the 3rd spatial folding structure coupling strip line CL3, the 4th asymmetric strip line TL4, the 4th mounted on surface, the 4th output port P4, the second asymmetric strip line TL2, second surface are installed, the second output port P2, the 3rd asymmetric strip line TL3, the 3rd mounted on surface all adopt multilayer high-frequency low-consumption dielectric stack technology to realize; Wherein coupling line partly adopts the 3 D stereo foldable structure coupling strip line of multilayer high-frequency low-consumption dielectric stack to realize, has effectively reduced size and weight.
C-band multi-octave miniature directional coupler of the present invention; Its operation principle is summarized as follows: port definition: when microwave signal during from the one 50 ohmage input, first output port P1 input; Then P1 is defined as signal input part; At this moment; The 50 ohmages input of the 4th corresponding mounted on surface, the 4th output port P4 are for being defined as the straight-through output of signal, and the input of 50 ohmages, the second output port P2 that corresponding second surface is installed is defined as signal coupling output, and the 50 ohmages input of the 3rd corresponding mounted on surface, the 3rd output port P3 are defined as the Signal Spacing output; In like manner; When also definable the 2 50 ohmage input, second output port P2 input; Then P2 is defined as signal input part, and at this moment, the input of 50 ohmages of the 3rd corresponding mounted on surface, the 3rd output port P3 are for being defined as the straight-through output of signal; The input of 50 ohmages, the first output port P1 that corresponding first surface is installed is defined as signal coupling output, and the 50 ohmages input of the 4th corresponding mounted on surface, the 4th output port P4 are defined as the Signal Spacing output; By that analogy, when P3 was signal input part, P2 was straight-through output, and P4 is the coupling output, and P1 is for isolating output; When P4 was signal input part, P1 was straight-through output, and P3 is the coupling output, and P2 is for isolating output; Existing is that signal input part is that example is described its operation principle with P1: the broadband microwave signal of input arrives spatial folding structure coupling strip line CL upper strata through the one 50 ohmage first output port P1 through the first asymmetric strip line TL1; Here energy is coupled; A signal part arrives straight-through output port the 4 50 ohmage the 4th output port P4 output through the 4th asymmetric strip line TL4; A part is coupled to the lower floor of spatial folding structure coupling strip line CL; The lower floor of spatial folding structure coupling strip line CL is transferred to the 3 50 ohmage the 3rd output port P3 through the 3rd asymmetric strip line TL3; Lower floor's other end of spatial folding structure coupling strip line CL is transferred to the 2 50 ohmage second output port P2 through the second asymmetric strip line TL2, and to be exactly coupling strip line be coupled to lower floor with the input signal on upper strata to its basic functional principle, and signal is in 50 ohmage output ports, two P2 added in phase; Form the coupling output; Signal is offset in the three P3 anti-phases of 50 ohmage output ports, forms isolation end, and the phase of output signal of P2 and P3 end differs 90 degree.
C-band multi-octave miniature directional coupler of the present invention is owing to be to adopt multilayer LTCC technology to realize; Be that low-temperature co-burning ceramic material and metallic pattern form at about 900 ℃ of sintering temperatures; So have extreme high reliability and temperature stability; Because structure adopts 3 D stereo coupling strip line structure and outer surface metallic shield to be grounded and to encapsulate, thereby volume and weight is reduced significantly.
The main performance test result of C-band multi-octave miniature directional coupler embodiment of the present invention can find out that by figure in the 3000-7000MHz frequency range, the S11 representative value is :-20.9dB referring to Fig. 5; The S21 representative value is :-2.69dB; The S31 representative value is :-22.28dB, and the S41 representative value is :-2.34dB, the representative value of standing wave are 1.22; The phase difference representative value of S21 and S31 is: 88.5 degree, orthogonality is very good.Operational frequency bandwidth reaches the ultra wide band range of third octave.The work centre frequency wavelength is about 60 millimeters; And component size is merely: 12.0mm * 4.01mm * 1.58mm; Size is very little in this frequency range like product, for the miniaturization of respective wireless electronic system and effective mitigation system weight with improve system reliability and play a significant role.
Claims (3)
1. C-band multi-octave miniature directional coupler; It is characterized in that: comprise the input of 50 ohmages, first output port (P1), the first asymmetric strip line (TL1), the 50 ohmages input of the 4th mounted on surface, the 4th output port (P4), the 4th asymmetric strip line (TL4) that first surface is installed, the input of 50 ohmages, the 3rd output port (P3) and earth terminal (Ground), the first spatial folding structure coupling strip line (CL1), the second spatial folding structure coupling strip line (CL2) and the 3rd spatial folding structure coupling strip line (CL3) of the 50 ohmages input that the second asymmetric strip line (TL2), second surface are installed, second output port (P2), the 3rd asymmetric strip line (TL3), the 3rd mounted on surface; The 50 ohmages input that first surface is installed, first output port (P1) connect first spatial folding structure coupling strip line (CL1) upper strata through the first asymmetric strip line (TL1) a end; The two ends of the first spatial folding structure coupling strip line (CL1) connect the two ends of the second spatial folding structure coupling strip line (CL2) through a transition band; The two ends of the second spatial folding structure coupling strip line (CL2) connect the two ends of the 3rd spatial folding structure coupling strip line (CL3) through a transition band; One end on the 3rd spatial folding structure coupling strip line (CL3) upper strata connects the input of 50 ohmages, the 4th output port (P4) of the 4th mounted on surface through the 4th asymmetric strip line (TL4); The 50 ohmages input that second surface is installed, second output port (P2) connect an end of first spatial folding structure coupling strip line (CL1) lower floor through the second asymmetric strip line (TL2), the other end of the 3rd spatial folding structure coupling strip line (CL3) lower floor through 50 ohmages that the 3rd asymmetric strip line (TL3) connects the 3rd mounted on surface import, the 3rd output port (P3).
2. C-band multi-octave miniature directional coupler according to claim 1 is characterized in that: the input of 50 ohmages, the 3rd output port (P3), earth terminal (Ground) and the spatial folding structure coupling strip line (CL) of the 50 ohmages input that the 50 ohmages input of the 50 ohmages input that first surface is installed, first output port (P1), the first asymmetric strip line (TL1), the first spatial folding structure coupling strip line (CL1), the second spatial folding structure coupling strip line (CL2), the 3rd spatial folding structure coupling strip line (CL3), the 4th asymmetric strip line (TL4), the 4th mounted on surface, the 4th output port (P4), the second asymmetric strip line (TL2), second surface are installed, second output port (P2), the 3rd asymmetric strip line (TL3), the 3rd mounted on surface all adopts multilayer high-frequency low-consumption dielectric stack structure and technology to realize.
3. C-band multi-octave miniature directional coupler according to claim 1 is characterized in that: coupling line partly adopts the 3 D stereo foldable structure coupling strip line structure of multilayer high-frequency low-consumption dielectric stack to realize.
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| CN201110331733XA CN102509841A (en) | 2011-10-27 | 2011-10-27 | C-band multi-octave miniature directional coupler |
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| CN201110331733XA CN102509841A (en) | 2011-10-27 | 2011-10-27 | C-band multi-octave miniature directional coupler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311630A (en) * | 2012-12-29 | 2013-09-18 | 南京理工大学 | C-waveband ultra-wideband multi-octave miniature directional coupler |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747226A (en) * | 2004-09-10 | 2006-03-15 | 华为技术有限公司 | Oriented coupler of coupler wire and production thereof |
| CN101394017A (en) * | 2008-09-08 | 2009-03-25 | 合肥仪威贸易有限公司 | Strip line directional coupler |
| CN101621150A (en) * | 2009-08-11 | 2010-01-06 | 南京理工大学 | P wave band third octave miniature directional coupler |
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2011
- 2011-10-27 CN CN201110331733XA patent/CN102509841A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747226A (en) * | 2004-09-10 | 2006-03-15 | 华为技术有限公司 | Oriented coupler of coupler wire and production thereof |
| CN101394017A (en) * | 2008-09-08 | 2009-03-25 | 合肥仪威贸易有限公司 | Strip line directional coupler |
| CN101621150A (en) * | 2009-08-11 | 2010-01-06 | 南京理工大学 | P wave band third octave miniature directional coupler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311630A (en) * | 2012-12-29 | 2013-09-18 | 南京理工大学 | C-waveband ultra-wideband multi-octave miniature directional coupler |
| CN103311630B (en) * | 2012-12-29 | 2015-12-09 | 南京理工大学 | C-waveband ultra-wideband multi-octave miniature directional coupler |
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| CB03 | Change of inventor or designer information |
Inventor after: Dai Yongsheng Inventor after: Yin Honghao Inventor after: Li Ping Inventor after: Xie Qiuyue Inventor after: Qi Yong Inventor after: Han Qunfei Inventor after: Feng Yuan Inventor after: Zuo Tongsheng Inventor after: Chen Riqing Inventor after: Sun Hongtu Inventor after: Han Min Inventor before: Dai Yongsheng Inventor before: Li Ping Inventor before: Xie Qiuyue Inventor before: Qi Yong Inventor before: Han Qunfei Inventor before: Feng Yuan Inventor before: Zuo Tongsheng Inventor before: Sun Hongtu Inventor before: Han Min Inventor before: Yin Honghao |
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Free format text: CORRECT: INVENTOR; FROM: DAI YONGSHENG XIE QIUYUE QI YONG HAN QUNFEI FENG YUAN ZUO TONGSHENG SUN HONGTU HAN MIN YIN HONGHAO LI PING TO: DAI YONGSHENG XIE QIUYUE QI YONG HAN QUNFEI FENG YUAN ZUO TONGSHENG CHEN RIQING SUN HONGTU HAN MIN YIN HONGHAO LI PING |
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Application publication date: 20120620 |