WO2020207094A1

WO2020207094A1 - Amplitude limiter

Info

Publication number: WO2020207094A1
Application number: PCT/CN2020/072197
Authority: WO
Inventors: 邓世雄; 孙计永; 马维龙; 许向前; 杨树国; 左国森; 董雪; 王朋
Original assignee: 中国电子科技集团公司第十三研究所
Priority date: 2019-04-10
Filing date: 2020-01-15
Publication date: 2020-10-15
Also published as: CN109995339A

Abstract

An amplitude limiter, comprising at least one amplitude limiting module (110). The amplitude limiting module (110) comprises a first unidirectional conduction unit (111), a second unidirectional conduction unit (112), a first voltage regulation unit (113) and a second voltage regulation unit (114). A forward end of the first unidirectional conduction unit (111) and a reverse end of the second unidirectional conduction unit (112) together form a first end of the amplitude limiting module (110), a reverse end of the first unidirectional conduction unit (111) is connected to a first end of the first voltage regulation unit (113), and a second end of the first voltage regulation unit (113) is grounded. A forward end of the second unidirectional conduction unit (112) is connected to a first end of the second voltage regulation unit (114), and a second end of the second voltage regulation unit (114) is grounded. The voltage regulation units (113, 114) are connected to the unidirectional conduction units (111, 112), and a clamping voltage is changed by changing the voltage regulation units (113, 114), so that when different voltages are inputted, the output voltages after passing through an amplitude limiter can be closer to a target voltage.

Description

A limiter

Technical field

This application belongs to the technical field of semiconductor manufacturing, and in particular relates to a limiter.

Background technique

A limiter is a circuit that can flatten the signal voltage amplitude within a limited range, also known as a clipper. The function of the limiter is to limit the output signal amplitude within a certain range, that is, when the input voltage exceeds or falls below a certain reference value, the output voltage will be limited to a certain level (called the limiter level) , And no longer change with the input voltage.

The current limiter has poor linearity and cannot meet the requirements of use.

technical problem

In view of this, an embodiment of the present application provides a limiter to solve the problem of poor linearity of the current limiter.

Technical solutions

The embodiment of the present invention provides a limiter, which is characterized by comprising at least one limiter module;

The limiting module includes a first unidirectional conduction unit, a second unidirectional conduction unit, a first voltage adjustment unit, and a second voltage adjustment unit;

The forward end of the first unidirectional conduction unit and the reverse end of the second unidirectional conduction unit are collectively the first end of the limiter module; the reverse end of the first unidirectional conduction unit and The first end of the first voltage adjustment unit is connected, and the second end of the first voltage adjustment unit is grounded; the forward end of the second unidirectional conduction unit is connected to the first end of the second voltage adjustment unit Connected, the second end of the second voltage regulating unit is grounded.

In an embodiment of the present application, the first voltage regulation unit includes a first Zener diode, the cathode of the first Zener diode is the first terminal of the first voltage regulation unit, and the The anode is the second end of the first voltage regulation unit.

In the embodiment of the present application, the second voltage regulation unit includes a second Zener diode, the anode of the second Zener diode is the first end of the second voltage regulation unit, and the The cathode is the second end of the second voltage regulation unit.

In the embodiment of the present application, when the number of limiter modules is at least two, the limiter further includes a partition module;

The partition module is arranged between two adjacent amplitude limiting modules, the first end of the partition module is connected to the first end of an adjacent amplitude limiting module, and the second end of the partition module is connected to the adjacent Connect the first end of the other limiting module.

In an embodiment of the present application, the separation module includes a phase shift circuit.

In the embodiment of the present application, it further includes a first filtering module and a second filtering module;

The first end of the first filter module is the input end of the limiter, the second end of the first filter module is connected to the first end of the limiter module, and the first end of the second filter module Connected to the first end of the limiter module, and the second end of the second filter module is the output end of the limiter.

In the embodiment of the present application, the first filter module includes a capacitor C1, the first end of the capacitor C1 is the first end of the first filter module, and the second end of the capacitor C1 is the first end of the first filter module. The second end of a filter module.

In the embodiment of the present application, the second filter module includes a capacitor C2, the first end of the capacitor C2 is the first end of the second filter module, and the second end of the capacitor C2 is the first end of the second filter module. The second end of the second filter module.

In the embodiment of the present application, the first diode is a first PIN diode.

In the embodiment of the present application, the second diode is a second PIN diode.

Beneficial effect

The invention connects the voltage adjustment unit to the unidirectional conduction unit, and changes the clamping voltage by changing the voltage adjustment unit, so that when different voltages are input, the output voltage after the limiter can be closer to the target voltage.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative labor, other drawings can be obtained from these drawings.

FIG. 1 is a schematic diagram of a circuit structure of a limiter module of a limiter provided by an embodiment of the present invention;

2 is a schematic diagram of the circuit structure of a limiter provided by an embodiment of the present invention;

FIG. 3 is a test result of the S parameter of the limiter provided by an embodiment of the present invention;

Figure 4 is a 1.5GHz signal input and output power curve;

Figure 5 shows the test curve of leakage power from 30MHz to 2000MHz when the input power is 37dBm.

Embodiments of the invention

In the following description, for the purpose of illustration rather than limitation, specific details such as a specific system structure and technology are proposed for a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from obstructing the description of this application.

In order to illustrate the technical solutions described in the present application, specific embodiments are used for description below.

Example 1 :

Fig. 1 shows a limiter provided by an embodiment of the present invention. For ease of description, only the parts related to the embodiment of the present invention are shown, which are detailed as follows:

As shown in FIG. 1, the limiter provided by the embodiment of the present invention includes at least one limiter module 110;

The limiting module 110 includes a first unidirectional conduction unit 111, a first unidirectional conduction unit 112, a first voltage adjustment unit 113, and a second voltage adjustment unit 114;

The forward end of the first one-way conduction unit 111 and the reverse end of the first one-way conduction unit 112 are both the first end of the limiter module 110; the first end of the first one-way conduction unit 111 The reverse terminal is connected to the first terminal of the first voltage regulation unit 113, the second terminal of the first voltage regulation unit 113 is grounded; the forward terminal of the first unidirectional conduction unit 112 is connected to the second terminal The first terminal of the voltage regulating unit 114 is connected, and the second terminal of the second voltage regulating unit 114 is grounded.

In this embodiment, when the number of limiter modules 110 is greater than or equal to two, the limiter modules 110 are connected in series.

In this embodiment, the turn-on voltage can be 1V-3V.

In the embodiment of the present invention, by connecting the voltage adjustment unit to the unidirectional conduction unit, and changing the clamp voltage by changing the voltage adjustment unit, the arbitrary adjustment of the opening voltage of the limiter is realized. Furthermore, when different voltages are input, the output voltage after the limiter can be closer to the target voltage.

In the embodiment of the present invention, the first voltage regulation unit 113 includes a first Zener diode, the cathode of the first Zener diode is the first terminal of the first voltage regulation unit 113, and the The anode is the second end of the first voltage regulation unit 113.

In the embodiment of the present invention, the second voltage regulating unit 114 includes a second zener diode, the anode of the second zener diode is the first end of the second voltage regulating unit 114, and the second zener diode The cathode is the second end of the second voltage regulating unit 114.

As shown in FIG. 2, in the embodiment of the present invention, when the number of limiter modules 110 is at least two, the limiter further includes a partition module 120;

The partition module 120 is disposed between two adjacent limiter modules 110, and the first end of the partition module 120 is connected to the first end of an adjacent limiter module 110. The first end of the partition module 120 is The two ends are connected to the first end of another adjacent limiting module 110.

In this embodiment, the separation module 120 is to increase the electrical length between the two limiting modules 110. Furthermore, multiple limiting modules 110 are used to achieve multi-level limiting, thereby achieving the lowest leakage power.

In the embodiment of the present invention, the separation module 120 includes a phase shift circuit.

In the embodiment of the present invention, it further includes a first filter module 130 and a second filter module 140;

The first end of the first filter module 130 is the input end of the limiter, the second end of the first filter module 130 is connected to the first end of the limiter module 110, and the second filter module 140 The first end of is connected to the first end of the limiter module 110, and the second end of the second filter module 140 is the output end of the limiter.

In the embodiment of the present invention, the first filter module 130 includes a capacitor C1, the first end of the capacitor C1 is the first end of the first filter module 130, and the second end of the capacitor C1 is the first end of the first filter module 130. The second end of a filtering module 130.

In the embodiment of the present invention, the second filter module 140 includes a capacitor C2, the first end of the capacitor C2 is the first end of the second filter module 140, and the second end of the capacitor C2 is the first end of the second filter module 140. The second end of the second filtering module 140.

In the embodiment of the present invention, the first diode is a first PIN diode.

In the embodiment of the present invention, the second diode is a second PIN diode.

As an example:

1. If there are two limiting modules 110 and one separating module 120, the separating module 120 is between the two limiting modules 110.

2. If there are three limiter modules 110 and one divider module 120, there are two limiter modules 110 on the left side of the divider module 120, one limiter module 110 is installed on the right side of the divider module 120, and two on the left The limiting modules 110 are connected in series; it is also possible that one limiting module 110 is arranged on the left side of the separating module 120, two limiting modules 110 are arranged on the right side of the separating module 120, and the two limiting modules 110 on the right are connected in series.

3. If there are three limiter modules 110 and two separate modules 120, they are the first limiter module 110, the second limiter module 110, the third limiter module 110, the first divider module 120, and the second divider module. Module 120; a first separation module 120 is provided between the first limiting module 110 and the second limiting module 110, and a second separation module 120 is provided between the second limiting module 110 and the third limiting module 110. The one partition module 120 and the second partition module 120 can have the same circuit structure or different circuit structures.

for example:

When there is a limiter module 110:

When the input voltage is 3V, the voltage after passing through the limiting module 110 is 2.1V.

When there is one separating module 120 and two limiting modules 110:

When the input voltage is 5V, the voltage after passing through the first limiting module 110 is 2.7V, after passing through the partition module 120, and finally after passing through the second limiting module 110, the voltage is 2.2V.

Adding the separation module 120 and the limiting module 110 can finally make the output voltage closer to 2.1V

As shown in Figure 3, the input standing wave is less than 1.4, the output standing wave is less than 1.3, and the insertion loss is less than 0.6dB.

As shown in Figure 4, when inputting a 1.5GHz signal, the power increases from 20 dBm to 37 dBm, and the output power increases linearly. When the output power increases to about 32 dBm, it compresses by 1 dB, and then the output power increases slowly and is less than 33 dBm.

As shown in Figure 5, when a 37 dBm signal is input, the leakage power in the 30MHz-2000 MHz band is between 28-33dBm.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A limiter, characterized by comprising at least one limiter module;

The limiting module includes a first unidirectional conduction unit, a second unidirectional conduction unit, a first voltage adjustment unit, and a second voltage adjustment unit;

The forward end of the first unidirectional conduction unit and the reverse end of the second unidirectional conduction unit are collectively the first end of the limiter module; the reverse end of the first unidirectional conduction unit and The first end of the first voltage adjustment unit is connected, and the second end of the first voltage adjustment unit is grounded; the forward end of the second unidirectional conduction unit is connected to the first end of the second voltage adjustment unit Connected, the second end of the second voltage regulating unit is grounded.
The limiter according to claim 1, wherein the first voltage adjusting unit comprises a first Zener diode, and the cathode of the first Zener diode is the first terminal of the first voltage adjusting unit , The anode of the first Zener diode is the second end of the first voltage regulation unit.
The limiter according to claim 1, wherein the second voltage regulation unit comprises a second Zener diode, and the anode of the second Zener diode is the first terminal of the second voltage regulation unit , The cathode of the second Zener diode is the second end of the second voltage regulation unit.
The limiter according to claim 1, wherein when the number of limiter modules is at least two, the limiter further comprises a partition module;

The partition module is arranged between two adjacent amplitude limiting modules, the first end of the partition module is connected to the first end of an adjacent amplitude limiting module, and the second end of the partition module is connected to the adjacent Connect the first end of the other limiting module.
The limiter of claim 4, wherein the separation module includes a phase shift circuit.
The limiter of claim 1, further comprising a first filtering module and a second filtering module;

The first end of the first filter module is the input end of the limiter, the second end of the first filter module is connected to the first end of the limiter module, and the first end of the second filter module Connected to the first end of the limiter module, and the second end of the second filter module is the output end of the limiter.
The limiter according to claim 6, wherein the first filter module comprises a capacitor C1, the first end of the capacitor C1 is the first end of the first filter module, and the The second end is the second end of the first filter module.
The limiter of claim 6, wherein the second filter module comprises a capacitor C2, the first end of the capacitor C2 is the first end of the second filter module, and the The second end is the second end of the second filter module.
The limiter of claim 1, wherein the first diode is a first PIN diode.
The limiter of claim 1, wherein the second diode is a second PIN diode.