CN105242109A - Radio-frequency measuring device with micro-strip line coarse-tuning inductor and micro-strip line coarse-tuning inductor - Google Patents
Radio-frequency measuring device with micro-strip line coarse-tuning inductor and micro-strip line coarse-tuning inductor Download PDFInfo
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- CN105242109A CN105242109A CN201410321231.2A CN201410321231A CN105242109A CN 105242109 A CN105242109 A CN 105242109A CN 201410321231 A CN201410321231 A CN 201410321231A CN 105242109 A CN105242109 A CN 105242109A
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Abstract
The invention provides a radio-frequency measuring device with a micro-strip line coarse-tuning inductor and a micro-strip line coarse-tuning inductor. The radio-frequency measuring device comprises a printed circuit board and a capacitive component. At least one side of the capacitive component is connected in series with a micro-strip line coarse-tuning inductor. The micro-strip line coarse-tuning inductor comprises a first micro-strip line and a second micro-strip line which are distributed in series on the printed circuit board. First pads are arranged at the tail of the first micro-strip line, and second pads are arranged at the head of the second micro-strip line. An adjusting part composed of micro-strip lines is arranged on at least one side of the first micro-strip line and the second micro-strip line. On the adjusting part, third pads are at least arranged in a position corresponding to the first pads, fourth pads are at least arranged in a position corresponding to the second pads, and a resistance-capacitance device is welded between any pair of parallel pads. By changing the inductance of the micro-strip lines, impedance matching between the micro-strip line coarse-tuning inductor and the capacitive component is achieved.
Description
Technical field
The present invention relates to electric variable measurement device and inductance device field, particularly a kind of radio-frequency measurement device and microstrip line coarse adjustment inductance with microstrip line coarse adjustment inductance.
Background technology
In the radio-frequency measurement device of prior art, in order to ensure the indices requirement of radio-frequency measurement device, in circuit design, usually relate to the problem of impedance matching.Such as common radio-frequency signal source, spectrum analyzer etc., for spectrum analyzer, spectrum analyzer is a kind of receiver being used for carrying out measured signal spectrum analysis, the correlation parameters such as the frequency of unknown signaling, amplitude, distortion can be measured, there is very wide frequency band and amplitude measurement scope usually.Be mainly used in the fields such as base station maintenance, electronic product research and development, production.Spectrum analyzer can be described as again frequency domain oscillograph, follows the tracks of oscillograph, analyzes oscillograph, harmonic analyzer, frequency characteristic analyzer or Fourier analyzer etc.Modern spectrum analyzer can in an analog fashion or digital form display analysis result, and the very low frequency (VLF) analyzing less than 1 hertz is to the electric signal of whole radio frequency bands of submillimeter region.The key technical indexes of spectrum analyzer has frequency range, sensitivity, amplitude precision, distortion, resolving power, sweep velocity, display mode, spurious response and standing wave etc., and spectrum analyzer is generally divided into sweep-frequency Békésy audiometer and real-time analysis formula two class.
This index of standing wave weighs spectrum analyzer input impedance characteristic, and port input impedance is all generally be matched to 50 ohm.This index can be measured by vector network analyzer, if port input impedance is not 50 ohm, when spectrum analyzer connect equipment under test time, and equipment under test neither 50 ohms impedance match time, will error be there is in its measurement result.But when spectrum analyzer reaches 50 ohms impedance match, its final testing result is exactly accurately.Therefore spectrum analyzer middle impedance coupling is good, and standing wave performance index are all right.In like manner this index of standing wave also can be used for weighing the impedance operator of radiofrequency signal source output terminal, vector network analyzer is connected to the output terminal of radio-frequency signal source, if the output port impedance matching of radio-frequency signal source is good, represent that the standing wave performance index of radio-frequency signal source are relatively good.
Generally all ESD protective device is provided with, switch, attenuator, amplifier etc. in radio-frequency measurement device.Wherein each device all more or less presents capacitive or perception, can not reach impedance matching, and this just makes standing wave be deteriorated.Such as, ESD protective device generally can present capacitive, and whole passage standing wave can be made to be deteriorated.At this moment need the capacitive brought by next " neutralization " ESD protective device of inductance, finally make whole passage reach impedance matching.
But because the electric capacity that ESD protective device presents is less, therefore the inductance neutralizing this electric capacity also needs the enough little of design, can not realize with discrete device.
Summary of the invention
An object of the present invention is: solve prior art and discrete device cannot be used in radio-frequency measurement device to realize the technical matters of controllable impedance, provide a kind of radio-frequency measurement device with microstrip line coarse adjustment inductance.
The radio-frequency measurement device comprising microstrip line coarse adjustment inductance provided by the invention, comprise a printed-wiring board (PWB), a capacitive part, to connect at least side of described capacitive part a microstrip line coarse adjustment inductance, described microstrip line coarse adjustment inductance comprises the first microstrip line and second microstrip line of setting two serial distributions on a printed-wiring board, first pad is provided with at the afterbody of described first microstrip line, second pad is provided with at the head of described second microstrip line, on the printed circuit board, in at least side of described first microstrip line and described second microstrip line, an adjustment part be made up of microstrip line is also set, on described adjustment part, the position of at least corresponding described first pad arranges the 3rd pad, the position of at least corresponding described second pad arranges the 4th pad, all for welding a capacitance resistance ware between the pad be arranged in parallel for any pair.
By welding capacitance resistance ware between different pads, have adjusted the length of microstrip line, and then change the inductance of microstrip line, by regulating the inductance value of microstrip line, the capacitance of described capacitive part and described inductance value are neutralized, and then makes whole circuit unit reach impedance matching.
As one citing, the described adjustment part be made up of microstrip line is one article of the 3rd microstrip line being parallel to described first microstrip line and described second microstrip line setting.
By arranging one article of the 3rd microstrip line, the adjustment of two inductance value can be realized, arranging conveniently, regulate simple.
Illustrate as one, the described adjustment part be made up of microstrip line comprises at least two articles perpendicular to described first microstrip line and described second microstrip line, equal and opposite in direction, the 4th microstrip line be oppositely arranged side by side and the 5th microstrip line, described 3rd pad is set in the position of corresponding described first pad of described 4th microstrip line head, described 4th pad is set in the position of corresponding described second pad of described 5th microstrip line head, the correspondence position arranged side by side of the line body of described 4th microstrip line and the line body of the 5th microstrip line also arranges a pair the 5th pads and the 6th pad.
By longitudinally vertically arranging two microstrip lines, can realize the adjustment of two inductance value, the capacitance resistance ware of just welding needs more than the situation arranging a microstrip line.
Illustrate as one, the described adjustment part be made up of microstrip line comprises perpendicular to described first microstrip line and described second microstrip line, equal and opposite in direction, the 4th microstrip line be set up in parallel, 5th microstrip line, 6th microstrip line, 7th microstrip line, 8th microstrip line, 9th microstrip line, at described 4th microstrip line, 5th microstrip line, 6th microstrip line, head and the afterbody of the 7th microstrip line are provided with pad, at described 8th microstrip line, the head of the 9th microstrip line arranges pad, the relative position arranged side by side of the line body of described 6th microstrip line and the line body of the 7th microstrip line also arranges a pair the 7th pads and the 8th pad, the relative position arranged side by side of the line body of described 8th microstrip line and the line body of the 9th microstrip line also arranges a pair the 9th pads and the tenth pad.
By longitudinally vertically arranging many microstrip lines, can realize the adjustment of multiple inductance value, the controllable impedance scope of application is more flexible.
As one citing, be also provided with the 11 pad at the afterbody of described first microstrip line, be also provided with the 12 pad at the head of described second microstrip line, described 11 pad and described 12 pad are for welding capacitance resistance ware.
As one citing, described capacitive part is ESD protective device.
Illustrate as one, also to connect in the side of described microstrip line coarse adjustment inductance a microstrip line fine tuning inductance, described microstrip line fine tuning inductance, comprise setting two the first microstrip lines and the second microstrip line distributed at an angle on a printed-wiring board, first pad is provided with at the afterbody of described first microstrip line, second pad is provided with at the afterbody of described second microstrip line, described first pad and described second pad are for being connected a capacitance resistance ware, with described first pad for the center of circle, what be radius with the length of described capacitance resistance ware circumferentially also at least arranges the 3rd pad, connected by the 3rd microstrip line between described second pad and the 3rd pad, described first pad and described 3rd pad are for being connected a capacitance resistance ware.
Microstrip line coarse adjustment inductance combines with microstrip line fine tuning inductance, can more accurately in and the capacitance of capacitive part, make whole circuit reach impedance matching.
Another object of the present invention is: solve the technical matters that microstrip line controllable impedance of the prior art regulates inductance inconvenience, provide a kind of microstrip line coarse adjustment inductance.
Microstrip line coarse adjustment inductance provided by the invention, comprise the first microstrip line and second microstrip line of setting two serial distributions on a printed-wiring board, it is characterized in that, first pad is provided with at the afterbody of described first microstrip line, second pad is provided with at the head of described second microstrip line, on the printed circuit board, in at least side of described first microstrip line and described second microstrip line, an adjustment part be made up of microstrip line is also set, on described adjustment part, the position of at least corresponding described first pad arranges the 3rd pad, the position of at least corresponding described second pad arranges the 4th pad, all for welding a capacitance resistance ware between the pad be arranged in parallel for any pair.
By welding capacitance resistance ware between different pads, have adjusted the length of microstrip line, and then change the inductance value of microstrip line.
As one citing, the described adjustment part be made up of microstrip line is one article of the 3rd microstrip line being parallel to described first microstrip line and described second microstrip line setting.
By arranging one article of the 3rd microstrip line, the adjustment of two inductance value can be realized, arranging conveniently, regulate simple.
Illustrate as one, the described adjustment part be made up of microstrip line comprises at least two articles perpendicular to described first microstrip line and described second microstrip line, equal and opposite in direction, the 4th microstrip line be oppositely arranged side by side and the 5th microstrip line, described 3rd pad is set in the position of corresponding described first pad of described 4th microstrip line head, described 4th pad is set in the position of corresponding described second pad of described 5th microstrip line head, the correspondence position arranged side by side of the line body of described 4th microstrip line and the line body of the 5th microstrip line also arranges a pair the 5th pads and the 6th pad.
By longitudinally vertically arranging two microstrip lines, the adjustment of two inductance value can be realized, but the capacitance resistance ware of welding is more than the situation arranging a microstrip line.
Illustrate as one, the described adjustment part be made up of microstrip line comprises perpendicular to described first microstrip line and described second microstrip line, equal and opposite in direction, the 4th microstrip line be set up in parallel, 5th microstrip line, 6th microstrip line, 7th microstrip line, 8th microstrip line, 9th microstrip line, at described 4th microstrip line, 5th microstrip line, 6th microstrip line, head and the afterbody of the 7th microstrip line are provided with pad, at described 8th microstrip line, the head of the 9th microstrip line arranges pad, the correspondence position arranged side by side of the line body of described 4th microstrip line and the line body of the 5th microstrip line also arranges a pair the 5th pads and the 6th pad, the relative position arranged side by side of the line body of described 6th microstrip line and the line body of the 7th microstrip line also arranges a pair the 7th pads and the 8th pad, the relative position arranged side by side of the line body of described 8th microstrip line and the line body of the 9th microstrip line also arranges a pair the 9th pads and the tenth pad.
By longitudinally vertically arranging many microstrip lines, can realize the adjustment of multiple inductance value, the controllable impedance scope of application is more flexible.
As one citing, be also provided with the 11 pad at the afterbody of described first microstrip line, be also provided with the 12 pad at the head of described second microstrip line, described 11 pad and described 12 pad are for welding capacitance resistance ware.
As one citing, described capacitance resistance ware is 0 ohm chip resistor.
Use 0 ohm chip resistor, cheap, install simple and convenient, be convenient to batch production.
As one citing, described capacitance resistance ware is patch capacitor.
Capacitance resistance ware adopt patch capacitor, can play every straight effect, be applicable to should impedance matching again in straight circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the microstrip line controllable impedance 100 of the preferred embodiment of the present invention 1;
Fig. 2 is the structural representation of the microstrip line controllable impedance 200 of the preferred embodiment of the present invention 2;
Fig. 3 is the capacitive device impedance matching schematic diagram of the radio-frequency measurement device 300 of the preferred embodiment of the present invention 3;
Fig. 4 is the capacitive device impedance matching isoboles of the radio-frequency measurement device 300 of the preferred embodiment of the present invention 3;
Fig. 5 is that the capacitive device impedance matching of the radio-frequency measurement device 300 of the preferred embodiment of the present invention 3 simplifies isoboles.
Embodiment
With reference to Fig. 1, the microstrip line controllable impedance 100 of this preferred embodiment 1, comprise the microstrip line 101 of the distribution of serial on a printed-wiring board, microstrip line 102, at the microstrip line 103 that microstrip line 101 and microstrip line 102 both sides be arranged in parallel, microstrip line 104, microstrip line 101 arranges pad 105, pad 107 and pad 111, microstrip line 102 arranges pad 106, pad 108 and pad 112, microstrip line 103 arranges pad 109 and pad 110, microstrip line 104 arranges pad 113 and pad 114, a capacitance resistance ware all can be held between every pad be arranged in parallel for a pair.The microstrip line controllable impedance 100 of this preferred embodiment 1 has three kinds of adjustable electric sensibility reciprocals: when mounting capacitance resistance ware 11 between pad 105 and pad 106, and signal is by microstrip line 101, capacitance resistance ware 11 and microstrip line 102, and at this moment inductance value is minimum; The second only mounts capacitance resistance ware 14 and capacitance resistance ware 15, and such signal will by microstrip line 101, capacitance resistance ware 14, microstrip line 104, capacitance resistance ware 15 and microstrip line 102, large than only through capacitance resistance ware 11 of such inductance value; The third attachment capacitance resistance ware 12 and capacitance resistance ware 13, compared with the second, the total length that microstrip line 103 and microstrip line 101, microstrip line 102, capacitance resistance ware 12 and capacitance resistance ware 13 couple together is greater than the total length that microstrip line 104, microstrip line 101, microstrip line 102, capacitance resistance ware 14 and capacitance resistance ware 15 couple together, therefore its inductance value will be larger.
Microstrip line 101, microstrip line 102, microstrip line 103, microstrip line 104 is wide isometric, microstrip line 101, microstrip line 102, microstrip line 103, the width of microstrip line 104 can according to 120 ohmage line designs, as other citing, due on identical sheet material, the resistance value of microstrip line is relevant to the width of microstrip line, microstrip line 101, microstrip line 102, the impedance line of identical ohmic value can be selected, microstrip line 103, microstrip line 104 can be selected the impedance line of identical ohmic value to design, therefore microstrip line 101, microstrip line 102, microstrip line 103, microstrip line 104 also can not wide Length discrepancy.
In the preferred embodiment, capacitance resistance ware 11, capacitance resistance ware 12, capacitance resistance ware 13, capacitance resistance ware 14, capacitance resistance ware 15 are 0 ohm chip resistor.Owing to using 0 ohm chip resistor, make installation simple and convenient, be convenient to batch production.
As other citing, in originally illustrating, capacitance resistance ware 11, capacitance resistance ware 12, capacitance resistance ware 13, capacitance resistance ware 14, capacitance resistance ware 15 are patch capacitor.
The low-limit frequency f considering that microstrip line controllable impedance 100 works in circuit is needed when using patch capacitor
min.The matched impedance R of this preferred embodiment is 50 Ω, then select total series connection capacitance C during electric capacity to meet:
C>1/(4πRf
min)
Capacitance resistance ware adopt patch capacitor, can play every straight effect, be applicable to should impedance matching again in straight circuit.
Alternatively illustrate, in originally illustrating, the length increasing microstrip line 103 and microstrip line 104 can be needed, to obtain larger adjustment of inductance amount according to circuit.
As other citing, in originally illustrating, microstrip line 101 and microstrip line 102 do not arrange separately pad 105 and pad 106, during welding capacitance resistance ware 11, uses pad 107 and pad 108, or use pad 111 and pad 112 during welding capacitance resistance ware 11.
As other citing, in originally illustrating, microstrip line 103 is only set or microstrip line 104 is only set, the adjustment of two inductance values can be realized.
With reference to Fig. 2, the microstrip line controllable impedance 200 of this preferred embodiment 2, comprises the microstrip line 201 of the distribution of serial on a printed-wiring board, microstrip line 202, perpendicular to microstrip line 201 and microstrip line 202, be set up in parallel equal-sized microstrip line 203, microstrip line 204, microstrip line 205, microstrip line 206, microstrip line 207, microstrip line 208, is provided with pad 209 at the afterbody of microstrip line 201, microstrip line 201, microstrip line 202, microstrip line 203, microstrip line 204, microstrip line 205, microstrip line 206, microstrip line 207, microstrip line 208 is wide isometric, and its width can according to 120 ohmage line designs, and as other citing, due on identical sheet material, the resistance value of microstrip line is relevant to the width of microstrip line, microstrip line 201, microstrip line 202, the impedance line of identical ohmic value can be selected, microstrip line 203, microstrip line 204, microstrip line 205, microstrip line 206, microstrip line 207, microstrip line 208 can be selected the impedance line of identical ohmic value to design, therefore microstrip line 201, microstrip line 202, microstrip line 203, microstrip line 204, microstrip line 205, microstrip line 206, microstrip line 207, microstrip line 20 also can not wide Length discrepancy.Pad 210 is provided with at the head of microstrip line 202, pad 211 and pad 213 is respectively equipped with at the head of microstrip line 203 and afterbody, pad 212 and pad 214 is respectively equipped with at the head of microstrip line 204 and afterbody, pad 215 and pad 217 is respectively equipped with at the head of microstrip line 205 and afterbody, at the head of microstrip line 206 and afterbody, pad 216 and pad 218 are set respectively, at microstrip line 207, the head of microstrip line 208 arranges pad 219 and pad 220 respectively, the correspondence position arranged side by side of the line body of microstrip line 203 and the line body of microstrip line 204 also arranges a pair pad 221 and pad 222, the relative position arranged side by side of the line body of microstrip line 205 and the line body of microstrip line 206 also arranges a pair pad 223 and pad 224, the relative position arranged side by side of the line body of microstrip line 207 and the line body of microstrip line 208 also arranges a pair pad 225 and pad 226.
In the preferred embodiment, be also provided with pad 227 at the afterbody of microstrip line 201, be also provided with pad 228 at the head of microstrip line 202.
When needs minimum inductance amount, only attachment capacitance resistance ware 20; When needs comparatively big inductance quantity time, only attachment capacitance resistance ware 21,22,23, forms a U-shaped structure, and such Microstrip Length compares the distance originally having had more two capacitance resistance wares, and inductance value will increase; In like manner need more big inductance quantity time need more capacitance resistance ware to lengthen this U-shaped structure.Certainly, merely illustrate four kinds of regulative modes in Fig. 2, U-shaped joint can also be increased as required, increase setting range.
As other citing, in originally illustrating, microstrip line 201 and microstrip line 202 do not arrange separately pad 227 and pad 228, during welding capacitance resistance ware 20, use pad 209 and pad 210.
In the preferred embodiment, capacitance resistance ware 20, capacitance resistance ware 21, capacitance resistance ware 22, capacitance resistance ware 23, capacitance resistance ware 24, capacitance resistance ware 25, capacitance resistance ware 26, capacitance resistance ware 27, capacitance resistance ware 28, capacitance resistance ware 29 are 0 ohm chip resistor.Owing to using 0 ohm chip resistor, make installation simple and convenient, be convenient to batch production.
As other citing, in originally illustrating, capacitance resistance ware capacitance resistance ware 20, capacitance resistance ware 21, capacitance resistance ware 22, capacitance resistance ware 23, capacitance resistance ware 24, capacitance resistance ware 25, capacitance resistance ware 26, capacitance resistance ware 27, capacitance resistance ware 28, capacitance resistance ware 29 are patch capacitor.
The low-limit frequency f considering that microstrip line 201 and microstrip line 202 work in circuit is needed when using patch capacitor
min.The matched impedance R of this preferred embodiment is 50 Ω, then select total series connection capacitance C during electric capacity to meet:
C>1/(4πRf
min)
Capacitance resistance ware adopt patch capacitor, can play every straight effect, be applicable to should impedance matching again in straight circuit.
With reference to Fig. 3, in conjunction with reference Fig. 4, the radio-frequency measurement device 300 of the preferred embodiment of the present invention 3 comprises a radio-frequency (RF) signal input end 301, a coupling capacitance 302, in the prior art, RF signal output 301 is generally direct to be electrically connected with coupling capacitance 302, because coupling capacitance 302 is when connecting, its pad creates two equivalent capacity C41 and C43 over the ground, between RF signal output 301 and coupling capacitance 302, a microstrip line fine tuning inductance 303 and a microstrip line coarse adjustment inductance 304 is provided with in this preferred embodiment 3, also a microstrip line coarse adjustment inductance 305 and a microstrip line fine tuning inductance 306 is provided with at the opposite side of coupling capacitance 302.Wherein, microstrip line coarse adjustment inductance 304 and microstrip line coarse adjustment inductance 305 have employed the microstrip line coarse adjustment inductance as the preferred embodiment of the present invention 1.Microstrip line fine tuning inductance 303 comprises microstrip line 3031 and the microstrip line 3032 of setting two vertical distribution on a printed-wiring board, the head of microstrip line 3031 connects radio-frequency (RF) signal input end 301, first pad 3033 is provided with at the afterbody of microstrip line 3031, the head of microstrip line 3032 is connected with microstrip line coarse adjustment inductance 304, second pad 3034 is provided with at the afterbody of microstrip line 3032, first pad 3033 and the second pad 3034 are for being connected a capacitance resistance ware, with the first pad 3033 for the center of circle, what be radius with the length of capacitance resistance ware circumferentially also at least arranges the 3rd pad 3035, 4th pad 3036, 5th pad 3037, 6th pad 3038, connected by the 3rd microstrip line between second pad 3034 and the 3rd pad 3035, connected by the 4th microstrip line between 3rd pad 3035 and the 4th pad 3036, connected by the 5th microstrip line between 4th pad 3036 and the 5th pad 3037, connected by the 6th microstrip line between 5th pad 3037 and the 6th pad 3038, first pad 3033 and the 3rd pad 3035, 4th pad 3036, 5th pad 3037, all for connecting a capacitance resistance ware between 6th pad 3038, angle between line between the center of circle to each adjacent pad described is 45 degree.By welding the object that different capacitance resistance wares reaches fine tuning microstrip line inductance value between different pads.Microstrip line fine tuning inductance 306 also has the microstrip line 3061 and 3062 of two vertical distribution, microstrip line 3061 one end is connected with microstrip line coarse adjustment inductance 305, one end arranges pad, microstrip line 3062 one end arranges pad, other circuit unit in one end and radio-frequency measurement device 300, pad between microstrip line 3061 and microstrip line 3062 distributes and connects identical with microstrip line fine tuning inductance 303, no longer describes in detail here.
With reference to Fig. 4, the equivalent electrical circuit of coupling capacitance 302 comprises equivalent capacity C41, equivalent capacity C42, equivalent capacity C43, equivalent inductance L43 and equivalent resistance R41, and wherein equivalent capacity C42 is the equivalent capacitance of coupling capacitance 302; Equivalent capacity C41 and equivalent capacity C43 be coupling capacitance 302 when being connected, two equivalent capacitys that its pad produces over the ground.Equivalent inductance L41 is the equivalence of the micro-band inductance 303 of fine tuning, and equivalent inductance L42 is the equivalence of the micro-band inductance 304 of coarse adjustment, and equivalent inductance L44 is the equivalence of the micro-band inductance 305 of coarse adjustment, and equivalent inductance L45 is the equivalence of the micro-band inductance 306 of fine tuning.
Because the equivalent inductance L43 of coupling capacitance 302 and equivalent resistance R41 is smaller, that play a crucial role in this circuit is equivalent capacity C42, equivalent capacity C41 and equivalent capacity C43.Again because the capacitance of equivalent capacity C42 is far longer than the capacitance of equivalent capacity C41 and equivalent capacity C43, concerning high-frequency signal, the capacitive reactance of C42 is very little can be ignored, so can by equivalent capacity C42 short circuit process, the value of equivalent inductance L43 and equivalent resistance R41 is very little in addition, not obvious on end product impact, therefore to be ignored.
Whole like this circuit just can be reduced to the form of T-shape low-pass filter of equivalent inductance L46, equivalent capacity C44 as shown in Figure 5, equivalent capacity C45, equivalent inductance L47 composition.Here C44=C41, C45=C43; Two inductance L 41, L42 being equivalent to an inductance L 46 is be convenient to analyze, the value of inductance L 46 just equal two inductance L 41, L42's and; The value of inductance L 47 just equal two inductance L 44, L45's and.By the value of suitable selected inductance L 46 and inductance 47, just can improve whole Circuit Matching characteristic, also namely improve standing wave.
As other citing, in originally illustrating, microstrip line coarse adjustment inductance 304 and 305 can be only set in the both sides of coupling capacitance 302, also microstrip line fine tuning inductance 303 and 306 can be only set in the both sides of coupling capacitance 302, also can microstrip line coarse adjustment inductance 304 and microstrip line fine tuning inductance 306 be set respectively in the both sides of coupling capacitance 302, also can microstrip line fine tuning inductance 303 and microstrip line coarse adjustment inductance 305 be set respectively in the both sides of coupling capacitance 302.
As other citing, in originally illustrating, microstrip line coarse adjustment inductance 304 and microstrip line coarse adjustment inductance 305 also can adopt the microstrip line coarse adjustment inductance as the preferred embodiment of the present invention 2.
As other citing; in originally illustrating; capacitive part in radio-frequency measurement device 300 also can be ESD protective device, also can arrange as the microstrip line fine tuning inductance 303 of this preferred embodiment 3, microstrip line coarse adjustment inductance 304, microstrip line coarse adjustment inductance 305 and microstrip line fine tuning inductance 306 in described ESD protective device both sides.
Above-describedly be only the preferred embodiments of the present invention; be understood that; the explanation of above preferred embodiment just understands method of the present invention and core concept thereof for helping; the protection domain be not intended to limit the present invention; all any amendments, equivalent replacement etc. made within thought of the present invention and principle, all should be included within protection scope of the present invention.
Claims (14)
1. one kind comprises the radio-frequency measurement device of microstrip line coarse adjustment inductance, comprise a printed-wiring board (PWB), a capacitive part, it is characterized in that, to connect at least side of described capacitive part a microstrip line coarse adjustment inductance, described microstrip line coarse adjustment inductance comprises the first microstrip line and second microstrip line of setting two serial distributions on a printed-wiring board, first pad is provided with at the afterbody of described first microstrip line, second pad is provided with at the head of described second microstrip line, on the printed circuit board, in at least side of described first microstrip line and described second microstrip line, an adjustment part be made up of microstrip line is also set, on described adjustment part, the position of at least corresponding described first pad arranges the 3rd pad, the position of at least corresponding described second pad arranges the 4th pad, all for welding a capacitance resistance ware between the pad be arranged in parallel for any pair.
2. radio-frequency measurement device according to claim 1, is characterized in that, the described adjustment part be made up of microstrip line is one article of the 3rd microstrip line being parallel to described first microstrip line and described second microstrip line setting.
3. radio-frequency measurement device according to claim 1, it is characterized in that, the described adjustment part be made up of microstrip line comprises at least two perpendicular to described first microstrip line and described second microstrip line, equal and opposite in direction, the 4th microstrip line be oppositely arranged side by side and the 5th microstrip line, in the position of corresponding described first pad of described 4th microstrip line head, described 3rd pad is set, in the position of corresponding described second pad of described 5th microstrip line head, described 4th pad is set, the correspondence position arranged side by side of the line body of described 4th microstrip line and the line body of the 5th microstrip line also arranges a pair the 5th pads and the 6th pad.
4. radio-frequency measurement device according to claim 1, it is characterized in that, the described adjustment part be made up of microstrip line comprises perpendicular to described first microstrip line and described second microstrip line, equal and opposite in direction, the 4th microstrip line be set up in parallel, 5th microstrip line, 6th microstrip line, 7th microstrip line, 8th microstrip line, 9th microstrip line, at described 4th microstrip line, 5th microstrip line, 6th microstrip line, head and the afterbody of the 7th microstrip line are provided with pad, at described 8th microstrip line, the head of the 9th microstrip line arranges pad, the relative position arranged side by side of the line body of described 6th microstrip line and the line body of the 7th microstrip line also arranges a pair the 7th pads and the 8th pad, the relative position arranged side by side of the line body of described 8th microstrip line and the line body of the 9th microstrip line also arranges a pair the 9th pads and the tenth pad.
5. the radio-frequency measurement device according to claim 1,2,3 or 4, it is characterized in that, the 11 pad is also provided with at the afterbody of described first microstrip line, also be provided with the 12 pad at the head of described second microstrip line, described 11 pad and described 12 pad are for welding capacitance resistance ware.
6. the radio-frequency measurement device according to claim 1,2,3 or 4, is characterized in that, described capacitive part is ESD protective device.
7. according to claim 1, 2, radio-frequency measurement device described in 3 or 4, it is characterized in that, also to connect in the side of described microstrip line coarse adjustment inductance a microstrip line fine tuning inductance, described microstrip line fine tuning inductance, comprise setting two the first microstrip lines and the second microstrip line distributed at an angle on a printed-wiring board, first pad is provided with at the afterbody of described first microstrip line, second pad is provided with at the afterbody of described second microstrip line, described first pad and described second pad are for being connected a capacitance resistance ware, with described first pad for the center of circle, what be radius with the length of described capacitance resistance ware circumferentially also at least arranges the 3rd pad, connected by the 3rd microstrip line between described second pad and the 3rd pad, described first pad and described 3rd pad are for being connected a capacitance resistance ware.
8. a microstrip line coarse adjustment inductance, comprise the first microstrip line and second microstrip line of setting two serial distributions on a printed-wiring board, it is characterized in that, first pad is provided with at the afterbody of described first microstrip line, second pad is provided with at the head of described second microstrip line, on the printed circuit board, in at least side of described first microstrip line and described second microstrip line, an adjustment part be made up of microstrip line is also set, on described adjustment part, the position of at least corresponding described first pad arranges the 3rd pad, the position of at least corresponding described second pad arranges the 4th pad, all for welding a capacitance resistance ware between the pad be arranged in parallel for any pair.
9. microstrip line coarse adjustment inductance according to claim 8, is characterized in that, the described adjustment part be made up of microstrip line is one article of the 3rd microstrip line being parallel to described first microstrip line and described second microstrip line setting.
10. microstrip line coarse adjustment inductance according to claim 8, it is characterized in that, the described adjustment part be made up of microstrip line comprises at least two perpendicular to described first microstrip line and described second microstrip line, equal and opposite in direction, the 4th microstrip line be oppositely arranged side by side and the 5th microstrip line, in the position of corresponding described first pad of described 4th microstrip line head, described 3rd pad is set, in the position of corresponding described second pad of described 5th microstrip line head, described 4th pad is set, the correspondence position arranged side by side of the line body of described 4th microstrip line and the line body of the 5th microstrip line also arranges a pair the 5th pads and the 6th pad.
11. microstrip line coarse adjustment inductance according to claim 8, it is characterized in that, the described adjustment part be made up of microstrip line comprises perpendicular to described first microstrip line and described second microstrip line, equal and opposite in direction, the 4th microstrip line be set up in parallel, 5th microstrip line, 6th microstrip line, 7th microstrip line, 8th microstrip line, 9th microstrip line, at described 4th microstrip line, 5th microstrip line, 6th microstrip line, head and the afterbody of the 7th microstrip line are provided with pad, at described 8th microstrip line, the head of the 9th microstrip line arranges pad, the correspondence position arranged side by side of the line body of described 4th microstrip line and the line body of the 5th microstrip line also arranges a pair the 5th pads and the 6th pad, the relative position arranged side by side of the line body of described 6th microstrip line and the line body of the 7th microstrip line also arranges a pair the 7th pads and the 8th pad, the relative position arranged side by side of the line body of described 8th microstrip line and the line body of the 9th microstrip line also arranges a pair the 9th pads and the tenth pad.
12. according to Claim 8,9 the microstrip line coarse adjustment inductance, described in 10 or 11, it is characterized in that, the 11 pad is also provided with at the afterbody of described first microstrip line, also be provided with the 12 pad at the head of described second microstrip line, described 11 pad and described 12 pad are for welding capacitance resistance ware.
13. according to Claim 8,9, microstrip line coarse adjustment inductance described in 10 or 11, it is characterized in that, described capacitance resistance ware is 0 ohm chip resistor.
14. according to Claim 8,9, microstrip line coarse adjustment inductance described in 10 or 11, it is characterized in that, described capacitance resistance ware is patch capacitor.
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| CN201410321231.2A CN105242109B (en) | 2014-07-08 | 2014-07-08 | Radio frequency measuring device with microstrip line coarse tuning inductor and microstrip line coarse tuning inductor |
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| CN105242109B CN105242109B (en) | 2019-12-13 |
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| CN105242125A (en) * | 2014-07-08 | 2016-01-13 | 苏州普源精电科技有限公司 | Radio-frequency measuring device with micro-strip line fine-tuning inductor and micro-strip line fine-tuning inductor |
| CN107872919A (en) * | 2016-09-23 | 2018-04-03 | 宇龙计算机通信科技(深圳)有限公司 | Impedance matching circuit plate, antenna and terminal |
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|---|---|
| CN105242109B (en) | 2019-12-13 |
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Address after: Kolding road high tech Zone of Suzhou City, Jiangsu Province, No. 8 215163 Patentee after: Puyuan Jingdian Technology Co., Ltd Address before: Kolding road high tech Zone of Suzhou City, Jiangsu Province, No. 8 215163 Patentee before: SUZHOU RIGOL PRECISION ELECTRIC TECHNOLOGIES Co.,Ltd. |