Gradual change PIN pipe array amplitude limiting system
阅读说明：本技术 一种渐变pin管阵限幅系统 (Gradual change PIN pipe array amplitude limiting system ) 是由 刘锋 李世峰 马丽筠 雷骁 王雷阳 邬邦 于 2020-12-28 设计创作，主要内容包括：本发明提出了一种渐变PIN管阵限幅系统。本发明由多个匹配传输线、多个渐变PIN管阵模块、接地电感、正向PIN管、反向PIN管构成,每个渐变PIN管阵模块由PIN管、阻抗变换传输线构成。本发明通过阻抗变换传输线来调整每个渐变PIN管阵模块对外呈现不的阻抗值,靠近输入端的渐变PIN管阵模块的阻抗值最大,靠近输出端的阻抗值最小,从而解决传统限幅器电路第一级渐变PIN管阵模块吸收的功率较大的问题,将大功率尽量均匀的分配在各级渐变PIN管阵模块。本发明通过渐变结构将大功率分配到各级渐变PIN管阵模块,不仅可以通过改善PIN管的材料和结构提升限幅器的耐功率能力,还可以通过使用更多的渐变PIN管阵模块来获得更大的耐功率能力的提升。(The invention provides a gradual change PIN tube array amplitude limiting system. The invention comprises a plurality of matching transmission lines, a plurality of gradient PIN tube array modules, a grounding inductor, a forward PIN tube and a reverse PIN tube, wherein each gradient PIN tube array module comprises a PIN tube and an impedance transformation transmission line. According to the invention, the impedance value of each gradual change PIN tube array module which cannot be presented to the outside is adjusted through the impedance transformation transmission line, the impedance value of the gradual change PIN tube array module close to the input end is maximum, and the impedance value close to the output end is minimum, so that the problem that the power absorbed by the first-stage gradual change PIN tube array module of the traditional limiter circuit is large is solved, and the high power is uniformly distributed in each grade of gradual change PIN tube array modules as much as possible. According to the invention, high power is distributed to each level of gradient PIN tube array module through the gradient structure, so that the power resistance of the amplitude limiter can be improved by improving the material and structure of the PIN tube, and the higher power resistance can be obtained by using more gradient PIN tube array modules.)
1. A gradual change PIN tube array amplitude limiting system is characterized by comprising:
the I +1 matching transmission line, the i +2 matching transmission line, the first gradient PIN tube array module, the second gradient PIN tube array module, the i.once, the i.gradient PIN tube array module, the grounding inductor, the forward PIN tube and the reverse PIN tube;
the first matching transmission line, the second matching transmission line, the.
The connecting point between the ith matching transmission line and the (i + 1) th matching transmission line is connected with one end of the ith gradient PIN tube array module; the other end of the ith gradient PIN tube array module is grounded;
the ith gradient PIN tube array module consists of an ith impedance transformation transmission line and an ith PIN tube;
the ith impedance transformation transmission line is connected with the anode of the ith PIN tube; the negative electrode of the ith PIN tube is grounded;
a connecting point between the (i + 1) th matching transmission line and the (i + 2) th matching transmission line is connected with one end of the grounding inductor; the other end of the grounding inductor is grounded;
the connecting point between the (i + 2) th matching transmission line and the signal output is connected with the positive pole of the forward PIN tube and the negative pole of the reverse PIN tube;
the negative electrode of the forward PIN tube is grounded, and the positive electrode of the reverse PIN tube is grounded;
the first matching transmission line is used for inputting high-power radio-frequency signals and distributing power to the ith gradient PIN tube array module sequentially through the ith matching transmission line;
the impedance values of the first gradient PIN tube array module, the second gradient PIN tube array module and the ith gradient PIN tube array module are sequentially reduced;
the length of the ith impedance transformation transmission line is one quarter wavelength of the working frequency of the gradient PIN tube array amplitude limiting system, the width of the ith impedance transformation transmission line is adjusted to adjust the impedance value of the ith gradient PIN tube array module, and the wider the ith impedance transformation transmission line is, the smaller the impedance value of the ith gradient PIN tube array module is, the narrower the ith impedance transformation transmission line is, and the larger the impedance value of the ith gradient PIN tube array module is;
the ith matching transmission line is used for transmitting radio-frequency signals to the ith gradient PIN tube array module in a low insertion loss mode, the ith impedance transformation transmission line changes the energy distribution of the radio-frequency signals in the ith gradient PIN tube array module by changing the transmission line impedance, the ith gradient PIN tube array module reflects high-power radio-frequency signals back to the ith transmission line, and the (i + 1) th matching transmission line transmits the radio-frequency signals leaked by the ith gradient PIN tube array module to the (i + 1) th gradient PIN tube array module.
2. The progressive PIN matrix clipping system of claim 1, wherein:
the grounding inductor is used for providing a direct current to ground path for the gradient PIN tube array module.
3. The progressive PIN matrix clipping system of claim 1, wherein:
and the forward PIN tube and the reverse PIN tube are used for carrying out amplitude limiting on the signal output by the (i + 2) th matched transmission line and outputting an amplitude limiting signal with a lower level.
Technical Field
The invention belongs to the technical field of microwave integrated control, and particularly relates to a gradual change PIN tube array amplitude limiting system.
Background
The receiver is widely equipped in various types of radar and communication systems, but is often exposed to a high-power electromagnetic radiation environment and is easily attacked to cause functional failure. The amplitude limiter is a key device for protecting a sensitive circuit in the receiver from being burnt by a high-power radio-frequency signal, and the improvement of the power-resisting capability of the amplitude limiter is of great importance to the reliability of the receiver.
The amplitude limiter can be divided into a reflection type and an absorption type according to the working mode, and can be divided into an active amplitude limiting type and a passive amplitude limiting type according to the working principle. The difference is that the active amplitude limiting is to conduct the PIN tube by means of direct current bias, and the passive amplitude limiting is to conduct the PIN tube by means of a high-power signal. The power-resisting capacity of the amplitude limiter is improved, the amplitude limiters of different types have different improvement modes, but all the improvements are directed at the first-stage PIN tube array of the amplitude limiter, because the power-resisting improvement design of all the current amplitude limiters is based on the first-stage PIN tube array, and the input of high-power radio-frequency signals is completely responded by the first-stage PIN tube array. The first-stage PIN tube array is limited by PIN materials and device structures, so that the power is difficult to be improved, and the power-resistant level of the current single-chip amplitude limiter with the maximum power is still far lower than the output power of the power amplifier.
Disclosure of Invention
The invention provides a gradual change PIN tube array amplitude limiting system which can solve all the problems in the background technology.
The invention aims to solve the technical problems existing in the prior art: the power-tolerant of present amplitude limiter relies on first order PIN pipe battle array completely, and the promotion of back level circuit to the power-tolerant is very little, has greatly restricted the power-tolerant level of amplitude limiter. The invention provides a gradual change PIN tube array amplitude limiting system, and a circuit with the topology can distribute power to a multistage PIN tube array and can effectively improve the power-resisting level of an amplitude limiter.
A gradual change PIN tube array amplitude limiting system is characterized by comprising:
the I +1 matching transmission line, the i +2 matching transmission line, the first gradient PIN tube array module, the second gradient PIN tube array module, the i.once, the i.gradient PIN tube array module, the grounding inductor, the forward PIN tube and the reverse PIN tube;
the first matching transmission line, the second matching transmission line, the.
The connecting point between the ith matching transmission line and the (i + 1) th matching transmission line is connected with one end of the ith gradient PIN tube array module; the other end of the ith gradient PIN tube array module is grounded;
the ith gradient PIN tube array module consists of an ith impedance transformation transmission line and an ith PIN tube;
the ith impedance transformation transmission line is connected with the anode of the ith PIN tube; the negative electrode of the ith PIN tube is grounded;
a connecting point between the (i + 1) th matching transmission line and the (i + 2) th matching transmission line is connected with one end of the grounding inductor; the other end of the grounding inductor is grounded;
the connecting point between the (i + 2) th matching transmission line and the signal output is connected with the positive pole of the forward PIN tube and the negative pole of the reverse PIN tube;
the negative pole of the positive PIN tube is grounded, and the positive pole of the negative PIN tube is grounded.
The first matching transmission line is used for inputting high-power radio-frequency signals and distributing power to the ith gradient PIN tube array module sequentially through the ith matching transmission line;
the impedance values of the first gradient PIN tube array module, the second gradient PIN tube array module and the ith gradient PIN tube array module are sequentially reduced;
the length of the ith impedance transformation transmission line is one quarter wavelength of the working frequency of the gradient PIN tube array amplitude limiting system, the width of the ith impedance transformation transmission line is adjusted to adjust the impedance value of the ith gradient PIN tube array module, and the wider the ith impedance transformation transmission line is, the smaller the impedance value of the ith gradient PIN tube array module is, the narrower the ith impedance transformation transmission line is, and the larger the impedance value of the ith gradient PIN tube array module is;
preferably, the ith matching transmission line is used for transmitting the radio-frequency signal to the ith gradient PIN tube array module with low insertion loss, the ith impedance conversion transmission line changes the energy distribution of the radio-frequency signal in the ith gradient PIN tube array module by changing the transmission line impedance, the ith gradient PIN tube array module reflects the high-power radio-frequency signal back to the ith transmission line, and the (i + 1) th matching transmission line transmits the radio-frequency signal leaked by the ith gradient PIN tube array module to the (i + 1) th gradient PIN tube array module.
Preferably, the grounding inductor is used for providing a direct current path to the ground for the tapered PIN tube array module.
Preferably, the forward PIN tube and the reverse PIN tube are used for carrying out amplitude limiting on the signal output by the (i + 2) th matched transmission line and outputting an amplitude limiting signal with a lower level.
Therefore, the invention has the following advantages:
according to the gradual change PIN tube array amplitude limiting system, high power is distributed to each level of gradual change PIN tube array modules through the gradual change structure, the power resistance of an amplitude limiter can be improved by improving the material and the structure of a PIN tube, and the higher power resistance can be obtained by using more gradual change PIN tube array modules.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1: the invention relates to a core unit gradient PIN tube array module.
FIG. 2: the invention relates to a gradual change PIN tube array system.
FIG. 3: the invention relates to a gradual change PIN tube array amplitude limiting system circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The utility model provides a gradual change PIN pipe matrix amplitude limiting system which characterized in that includes:
the I +1 matching transmission line, the i +2 matching transmission line, the first gradient PIN tube array module, the second gradient PIN tube array module, the i.once, the i.gradient PIN tube array module, the grounding inductor, the forward PIN tube and the reverse PIN tube;
the first matching transmission line, the second matching transmission line, the.
The connecting point between the ith matching transmission line and the (i + 1) th matching transmission line is connected with one end of the ith gradient PIN tube array module; the other end of the ith gradient PIN tube array module is grounded;
the ith gradient PIN tube array module consists of an ith impedance transformation transmission line and an ith PIN tube;
the ith impedance transformation transmission line is connected with the anode of the ith PIN tube; the negative electrode of the ith PIN tube is grounded;
a connecting point between the (i + 1) th matching transmission line and the (i + 2) th matching transmission line is connected with one end of the grounding inductor; the other end of the grounding inductor is grounded;
the connecting point between the (i + 2) th matching transmission line and the signal output is connected with the positive pole of the forward PIN tube and the negative pole of the reverse PIN tube;
the negative pole of the positive PIN tube is grounded, and the positive pole of the negative PIN tube is grounded.
The first matching transmission line is used for inputting high-power radio-frequency signals and distributing power to the ith gradient PIN tube array module sequentially through the ith matching transmission line;
the impedance values of the first gradient PIN tube array module, the second gradient PIN tube array module and the ith gradient PIN tube array module are sequentially reduced;
the length of the ith impedance transformation transmission line is one quarter wavelength of the working frequency of the gradient PIN tube array amplitude limiting system, the width of the ith impedance transformation transmission line is adjusted to adjust the impedance value of the ith gradient PIN tube array module, and the wider the ith impedance transformation transmission line is, the smaller the impedance value of the ith gradient PIN tube array module is, the narrower the ith impedance transformation transmission line is, and the larger the impedance value of the ith gradient PIN tube array module is;
the ith matching transmission line is used for transmitting radio-frequency signals to the ith gradient PIN tube array module in a low insertion loss mode, the ith impedance transformation transmission line changes the energy distribution of the radio-frequency signals in the ith gradient PIN tube array module by changing the transmission line impedance, the ith gradient PIN tube array module reflects high-power radio-frequency signals back to the ith transmission line, and the (i + 1) th matching transmission line transmits the radio-frequency signals leaked by the ith gradient PIN tube array module to the (i + 1) th gradient PIN tube array module.
The grounding inductor is used for providing a direct current to ground path for the ith gradient PIN tube array module.
And the forward PIN tube and the reverse PIN tube are used for carrying out amplitude limiting on the signal output by the (i + 2) th matched transmission line and outputting an amplitude limiting signal with a lower level.
i＝5。
Fig. 1 is a core unit gradient PIN matrix module according to the present invention. Fig. 2 is a progressive PIN matrix system according to the present invention. Fig. 3 is a circuit of the gradual change PIN array amplitude limiting system of the present invention.
Referring to fig. 1, the core unit gradient PIN array module of the present invention includes an impedance transformation transmission line and a PIN.
Referring to fig. 2, the graded PIN matrix system of the present invention includes graded PIN matrix modules and matched transmission lines, and the used elements include: the PIN tube is matched with the transmission line and is an impedance transformation transmission line; referring to fig. 3, the circuit of the gradient PIN array amplitude limiting system has a core part and an auxiliary part, wherein the core part is a gradient PIN array, and elements used by the auxiliary part include an inductor, a matching transmission line and a PIN tube.
In this embodiment, when a high-power radio-frequency signal is input into the circuit, the transmission line distributes power to each tapered PIN array module of the tapered PIN array;
in this embodiment, each gradient PIN array module presents different impedance values to the outside, and the impedance value of the gradient PIN array module close to the input end is the largest, and the impedance value close to the output end is the smallest. The design can solve the problem that the power absorbed by the first-stage gradient PIN tube array module of the traditional limiter circuit is large, and can distribute high power to the gradient PIN tube array modules as uniformly as possible.
In this example, the outward different impedance values of the gradient PIN array module can be adjusted by the impedance transformation transmission line, the impedance value of the transmission line is related to the thickness and the dielectric constant of the substrate, and the wider the transmission line, the smaller the impedance value, the narrower the transmission line, and the larger the impedance value. The length of the impedance transformation transmission line is one quarter wavelength of the operating frequency of the limiter.
In this embodiment, the inductor connected in parallel to the ground is connected behind the gradient PIN array, and may be a direct current path through which the PIN is reversely conducted, and the gradient PIN array may have a limiting effect in the whole period of the signal.
In this embodiment, a PIN tube with a positive ground and a PIN tube with a reverse ground are added at the position of the auxiliary part close to the signal output end, which has two effects on the PIN tube: 1. matching the output signal to an output port impedance, typically 50 ohms; 2. the output level of the amplitude limiter is reduced, and the rear-stage circuit of the receiver is prevented from being broken down and burnt.
In summary, the invention has the following advantages:
according to the gradual change PIN tube array amplitude limiting system, the input power is distributed to different PIN tubes by using the gradual change PIN tube array modules with different impedance values, so that more PIN tubes bear the power, and the design can greatly improve the power tolerance level of the amplitude limiter.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms matched transmission line, tapered PIN matrix module, ground inductance, forward PIN, reverse PIN, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.