CN215266622U - Amplitude equalizer in microwave signal transmission - Google Patents
Amplitude equalizer in microwave signal transmission Download PDFInfo
- Publication number
- CN215266622U CN215266622U CN202121004250.4U CN202121004250U CN215266622U CN 215266622 U CN215266622 U CN 215266622U CN 202121004250 U CN202121004250 U CN 202121004250U CN 215266622 U CN215266622 U CN 215266622U
- Authority
- CN
- China
- Prior art keywords
- resonance
- substrate
- layer
- amplitude equalizer
- signal transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Waveguide Connection Structure (AREA)
- Filters And Equalizers (AREA)
Abstract
The utility model discloses an amplitude equalizer in microwave signal transmission, which comprises a substrate, a micro-strip circuit layer, a grounding layer, a signal input end and a signal output end, wherein the micro-strip circuit layer and the grounding layer are respectively arranged on two sides of the substrate; the micro-strip circuit layer comprises a plurality of parallel resonance micro-strips, and the resonance micro-strips are arranged in parallel at intervals; the resonance microstrip is a conductive layer or a metal foil layer sputtered on the substrate and is in a strip shape; the grounding of the resonance microstrip is connected to the grounding layer through a through hole penetrating through the substrate. The utility model discloses a with the wrong folding parallel design of pole of resonance microstrip, reduced the product size by a wide margin to reduced the insertion loss, the resonance microstrip of preparation from this, the parameter uniformity is good, the stable performance, this is vital to manufacturing modular product in batches, also establishes the basis for the miniaturized design of low reaches user microwave transmission product.
Description
Technical Field
The utility model relates to a microwave device, especially a balanced device of microwave transmission signal intensity.
Background
In the process of transmitting microwave signals used in the fields of aerospace, communication, radar, electronic countermeasure and the like, parameter errors inevitably exist in the manufacturing process of selected circuit components, and the components are installed on a circuit and then subjected to multi-stage accumulated error accumulation, so that final output signal amplitude fluctuation is overlarge, the consistency of the components is poor, the requirement of amplitude flatness in a working frequency band cannot be met, and great inconvenience is brought to equipment debugging and application. For this reason, it is necessary to add an appropriate amplitude equalizer to the wideband transceiver circuit for improving the flatness of the amplitude-frequency response of the wideband circuit. The equalizer is a key component in the microwave power module, the use of the equalizer affects the performance of the whole system, and the demand is large, so from the proposal of the equalization theory to the continuous improvement of subsequent devices, the development of the equalizers with different structures and different performances is not stopped, and the design of low insertion loss and miniaturization also becomes a research hotspot.
The amplitude equalizer is mainly classified into a lumped parameter type, a coaxial type, a waveguide type, and an integrated transmission line type. The lumped parameter type is influenced by parasitic parameters of components, can only be generally used for low frequency bands, and the coaxial type and the waveguide type are suitable for application of high-power high frequency bands, but have larger mass and volume and are not beneficial to system integration. The integrated transmission line type equalizer is widely applied in small volume, light weight, simple structure, convenient manufacture and low cost, wherein, the integrated transmission line type equalizer mainly comprises a resistor and a microstrip branch type equalizer. The equalizer is composed on the basis of multistage series-connected filtering modules, and is large in size, high in production cost and high in precision design difficulty due to multistage series connection.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an amplitude equalizer among microwave signal transmission system, this kind of amplitude equalizer parameter uniformity is good, small, the insertion loss is little, the equilibrium performance is superior.
The purpose of the utility model is realized like this:
an amplitude equalizer in a microwave signal transmission system comprises a substrate, a microstrip circuit layer, a ground layer, a signal input end and a signal output end, wherein the microstrip circuit layer and the ground layer are respectively arranged on two sides of the substrate; the microstrip circuit layer comprises a plurality of resonance microstrips which are connected in parallel, the resonance microstrips are arranged in parallel at intervals, one end of each resonance microstrip is connected with a resistor in series and then connected to the signal transmission line, and the other end of each resonance microstrip is grounded; the resonance microstrip is a conductive layer or a metal foil layer sputtered on the substrate and is in a strip shape; the signal input line is a conductive layer or a metal foil layer sputtered on the substrate and is also in a strip shape; the grounding layer is a conductive layer or a metal foil layer sputtered on the other side of the substrate, and the grounding of the resonance microstrip is connected to the grounding layer through a through hole penetrating through the substrate.
In the amplitude equalizer in the microwave signal transmission system, the space arrangement directions of the adjacent resonance micro-strips are opposite.
In the amplitude equalizer in the microwave signal transmission system, the substrate is a ceramic substrate or a resin substrate.
In the amplitude equalizer in the microwave signal transmission system, the thickness of the substrate is 0.2mm-1 mm.
In the amplitude equalizer in the microwave signal transmission system, the strip-shaped length of the resonance microstrip is 1-5mm, the width of the resonance microstrip is 0.1-1.0mm, the corresponding capacitance range is 0.1ppF-2000pF, and the inductance range is 0.1nh-1000 nh.
In the amplitude equalizer in the microwave signal transmission system, the resistance value of the resistor 4 is 1-100 Ω.
In the amplitude equalizer in the microwave signal transmission system, the signal input line 5 is an amplitude equalizer with a characteristic impedance of 50 ohms and a line width in the microwave signal transmission system, and the working frequency is 0.1-60 GHz.
Advantageous effects
The utility model greatly reduces the product size and the insertion loss by the folding parallel design of the staggered rods of the resonance microstrip in the amplitude equalizer; utilizing parasitic parameters required by a resonator formed between the microstrip circuit layer and the grounding layer; the required micro-capacitance and micro-inductance values are realized by adjusting the thickness dimension of the substrate and the width and length of the resonance microstrip; the width and the length of the sputtering resistor can be adjusted to obtain the required resistance value. The utility model discloses the product index of amplitude equalizer can realize through software emulation adjustment size design parameter to easily batch production, consequently, the utility model discloses amplitude equalizer designs conveniently, and the parameter uniformity is good, and the stable performance, this is vital to manufacturing modular product in batches, also establishes the basis for low reaches user design microwave transmission product.
The utility model discloses an attenuation of amplitude equalizer to signal is less than traditional equalizer, for example when the equalizer is when the frequency is 7GHz, the equalizer is 1.3dB to the attenuation of signal, and the input/output standing wave is less than 1.35, and the equalizer is 4.5dB for the equilibrium volume in 2-7GHz working frequency channel, consequently, the utility model discloses good equilibrium performance has.
Drawings
FIG. 1 is an electrical schematic of the present invention;
fig. 2 is a schematic structural diagram of the amplitude equalizer of the present invention (this embodiment takes a fifth order as an example);
fig. 3 is a sectional view taken along line a-a of the present invention.
In the drawings, the reference numerals denote: 1. signal input terminal, 2, resonance microstrip, 3, through hole, 4, resistor, 5, signal transmission line, 7, signal output terminal, 8, substrate, 9, microstrip circuit layer, 10, ground layer, 11, signal input ground terminal, 12, signal output ground terminal (signal input and output terminals are interchangeable).
Detailed Description
Fig. 1 to 3 show an amplitude equalizer composed of five resonant micro-strips, the amplitude equalizer includes a substrate 8, a micro-strip circuit layer 9, a ground layer 10, a signal input terminal 1 and a signal output terminal 11, the micro-strip circuit layer 9 and the ground layer 10 are respectively disposed on the front and back sides of the substrate layer 8; the microstrip circuit layer comprises a plurality of parallel resonance microstrips, each resonance microstrip is arranged in parallel at intervals, one end of each resonance microstrip is connected with the signal transmission line 5 after being connected with the resistor 4 in series, and the other end of each resonance microstrip is grounded; the resonance microstrip is a conductive layer sputtered on the substrate and is in a strip shape; the signal input line is a conductive layer sputtered on the substrate and is also strip-shaped; the ground layer 10 is a conductive layer sputtered on the other side of the substrate, and the ground of the resonance microstrip is connected to the ground layer 10 through a through hole 3 penetrating the substrate.
The utility model provides a resonance microstrip 2 has adopted wrong pole folding parallelly connected, and what so-called wrong pole folding parallelly connected indicates that resonance microstrip sets up opposite direction, can eliminate the harmful parasitic impedance who produces between the resonance microstrip like this, also can adopt other parallel modes certainly, for example the syntropy sets up resonance microstrip, also can realize reducing space size's purpose equally.
In the amplitude equalizer shown in fig. 1 and 2, the number of the resonance microstrips is 5, and when the amplitude equalizer is used for circuit design of a downstream of a product, the number of the resonance microstrips can be selected from 1 to 9 according to the working frequency of a signal transmission circuit, the requirement on signal attenuation and the requirement on the equalization quantity.
The utility model discloses a base plate, can adopt semiconductor material, like silicon chip base plate, AL2O3Ceramic substrates, AIN ceramic substrates, and the like. The material has good stability and strong metal adhesion, can reduce the influence of environmental factors on the frequency selection characteristic of the filter, and further ensures that the out-of-band rejection capability of the filter is not interfered.
After the substrate is selected, a required circuit pattern is manufactured through a series of processes such as a semiconductor etching process, photoetching, sputtering and the like, and the preparation can be finished.
The thickness of the substrate affects the parameters of the transducing element and also the strength of the amplitude equalizer, and can generally be chosen between values of 0.2-1 mm.
The utility model discloses the busbar in the microstrip circuit layer, and connect the bottom or the busbar between adjacent has constituted plate capacitor, and the width of hypothesis busbar is b, and length is an, and then the volume value C is calculated by following formula:
c ═ E × S/D, where D is the substrate thickness, the unit is M, E is the dielectric constant of the substrate medium, S is the bus bar area, a is the bus bar length, B is the bus bar width, S ═ a × B, the unit M is2The unit of the capacitance C is F, so that the capacitance value of the conductive strip can be adjusted by adjusting the size of the conductive strip.
The utility model provides a also constitute the inductance that the value of feeling is small between the busbar, its value of feeling depends on the length and the interval of busbar, and suppose L is the busbar inductance, and an is the length of busbar, and b is the width of busbar, then the computational formula of inductance as follows:
L＝2a*(In(2a/b)+0.5+0.2235*b/a)nH。
the strip length of resonance microstrip is 1-5mm, and the width is 0.1-1.0mm, and the electric capacity scope that corresponds is 0.1ppF-2000pF, and the inductance scope is 0.1nh-1000 nh.
The resistance value of the resistor 4 of the utility model is 1-100 omega. The resistor 4 mainly comprises tantalum nitride TaN.
The utility model discloses in the width of signal input line 6 is 0.2mm, is 50 omega lines.
Claims (8)
1. An amplitude equalizer in microwave signal transmission, characterized by: the micro-strip circuit board comprises a substrate (8), a micro-strip circuit layer (9), a grounding layer (10), a signal input end (1) and a signal output end (11), wherein the micro-strip circuit layer (9) and the grounding layer (10) are respectively arranged on the front side and the back side of the substrate (8); the microstrip circuit layer comprises a plurality of resonance microstrips (2) connected in parallel, the resonance microstrips (2) are arranged in parallel at intervals, one end of each resonance microstrip is connected with a resistor (4) in series and then connected to a signal input line (5), and the other end of each resonance microstrip is grounded; the resonance microstrip is a conductive layer or a metal foil layer sputtered on the substrate and is in a strip shape; the signal input line is a conductive layer or a metal foil layer sputtered on the substrate and is also in a strip shape; the grounding layer (10) is a conductive layer or a metal foil layer sputtered on the reverse side of the substrate, and the grounding of the resonance microstrip (2) is connected to the grounding layer through a through hole (3) penetrating through the substrate.
2. An amplitude equalizer in microwave signal transmission as recited in claim 1, wherein: the arrangement directions of the adjacent resonance micro-strips are opposite.
3. An amplitude equalizer in microwave signal transmission as recited in claim 1, wherein: the substrate (8) is a ceramic substrate.
4. An amplitude equalizer in microwave signal transmission as recited in claim 1, wherein: the number of the resonance microstrips in the amplitude equalizer is 1-9, and the resonance microstrips are connected in parallel, in series or in series-parallel.
5. An amplitude equalizer in microwave signal transmission as recited in claim 1, wherein: the thickness of the substrate is 0.2mm-1 mm.
6. An amplitude equalizer in microwave signal transmission as recited in claim 1, wherein: the strip length of the resonance microstrip (2) is 1mm-5mm, the width is 0.1mm-1mm, the corresponding capacitance range is 0.1pF-2000pF, and the inductance range is 0.1nh-1000 nh.
7. An amplitude equalizer in microwave signal transmission as recited in claim 1, wherein: the resistance value of the resistor (4) is 1-100 omega.
8. An amplitude equalizer in microwave signal transmission as recited in claim 1, wherein: the signal input line (5) has a line width of 50 ohms characteristic impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121004250.4U CN215266622U (en) | 2021-05-11 | 2021-05-11 | Amplitude equalizer in microwave signal transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121004250.4U CN215266622U (en) | 2021-05-11 | 2021-05-11 | Amplitude equalizer in microwave signal transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215266622U true CN215266622U (en) | 2021-12-21 |
Family
ID=79454929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121004250.4U Active CN215266622U (en) | 2021-05-11 | 2021-05-11 | Amplitude equalizer in microwave signal transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215266622U (en) |
-
2021
- 2021-05-11 CN CN202121004250.4U patent/CN215266622U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110034361B (en) | Miniaturized ultra-wideband filtering power division feed network for 5G communication and design method thereof | |
| US6747528B2 (en) | Dielectric filter, antenna duplexer, and communications appliance | |
| CN101609914A (en) | A kind of LTCC band-pass filter with harmonic suppression | |
| CN101609915A (en) | A kind of LTCC bandpass filter with image suppression | |
| CN201528031U (en) | L-type coupled-structure dual-mode microstrip bandpass filter | |
| CN107579317B (en) | Balun bandpass filter based on the line of rabbet joint and micro-strip multimode resonator | |
| CN105655673B (en) | A kind of coated by dielectric half module substrate integrated wave guide bandpass filter | |
| CN107275740A (en) | It is a kind of that there is the dual-frequency power divider for transmitting null character | |
| CN101635383A (en) | Micro-strip dual-mode filter with intensified coupling and harmonic suppression characteristics | |
| CN110061333B (en) | Microwave electrically tunable band-stop filter with high suppression degree and wide tuning range | |
| CN110429362B (en) | Reconfigurable filter based on T-shaped resonator | |
| CN215266622U (en) | Amplitude equalizer in microwave signal transmission | |
| CN201408828Y (en) | LTCC image frequency suppression band-pass filter | |
| CN114512779B (en) | High-selectivity broadband LTCC (low temperature co-fired ceramic) filtering power divider integrated chip | |
| CN201408829Y (en) | LTCC harmonic suppression band-pass filter | |
| CN212434808U (en) | Filter structure and filter | |
| CN114284677A (en) | High-selectivity broadband inverse filtering power divider based on three-wire coupling | |
| CN111416182B (en) | High-selectivity three-passband power division filter | |
| CN113659297A (en) | High-power microwave equalizer | |
| CN210468054U (en) | Dielectric filter | |
| CN114374369A (en) | Low temperature co-fired ceramic (LTCC) process-based duplexer with low-frequency transmission zero point | |
| CN106486723A (en) | Ultra-wide band filter based on microstrip line slot line structure | |
| CN111564682A (en) | Interdigital low group delay filter with double-layer four-resonance unit | |
| CN114824702B (en) | Miniaturized ultra-wideband stop band plane band-pass filter | |
| CN116093568B (en) | Ultra-wideband microstrip line-microstrip line parallel transition structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |