A device for improving the power capability of radio frequency switches

Abstract

The utility model discloses a device for improving the power capacity of a radio frequency switch, and relates to the field of switch technology. The device includes an inverter series group, a radio frequency transformer, and the radio frequency transformer includes a first radio frequency transformer and a second radio frequency transformer. The input end and the output end of the inverter series group are respectively connected to a signal input interface and the first radio frequency transformer, the output end of the first radio frequency transformer is connected to a radio frequency switch, and the input end and the output end of the second radio frequency transformer are respectively connected to the radio frequency switch and the signal output interface. The device sets an inverter series group at the signal input end to form a delay circuit, so that the input signal reaches the radio frequency transformer faster when it reaches the radio frequency transformer. The radio frequency transformers on both sides of the radio frequency switch adjust the radio frequency voltage intensity during transmission, and pass the high radio frequency voltage at the signal input end through the radio frequency switch in the form of a low radio frequency voltage, thereby improving the power capacity of the radio frequency switch.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency switches, in particular to a device for improving the power capacity of radio frequency switches. Background Art

[0002] RF switches control the conversion of microwave signal channels and are used for signal switching in the electrical, mechanical, electronic and communication industries. As an important control component in RF communication systems, RF switches directly control the switching between transmit mode and receive mode in RF communication systems. The RF switch processing capacity is the maximum RF input power that the switch can withstand without any permanent electrical performance degradation. With the continuous development of technology, the requirements for RF switch power capacity are getting higher and higher.

[0003] Traditional RF switches use transistor stacking to increase the power capability of RF switches, but transistors are prone to breakdown and damage during the stacking process, which limits the transmit power capability. The gate voltage or power supply of the currently used fast switching RF power amplifier can meet the requirements of RF switching speed, but there is also the problem of large transient spurious output during startup and shutdown. This causes the RF voltage borne by the RF switch to exceed its maximum tolerable range. Utility Model Content

[0004] The utility model aims to provide a device for improving the power capability of a radio frequency switch to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a device for improving the power capacity of a radio frequency switch, comprising an inverter series group and a radio frequency transformer, the radio frequency transformer comprising a first radio frequency transformer and a second radio frequency transformer, the input end and the output end of the inverter series group are respectively connected to a signal input interface and the first radio frequency transformer, the output end of the first radio frequency transformer is connected to a radio frequency switch, and the input end and the output end of the second radio frequency transformer are respectively connected to the radio frequency switch and the signal output interface.

[0006] Preferably, the radio frequency transformer is a coil type transformer.

[0007] Preferably, the circuit transformation of the first RF transformer and the circuit transformation of the second RF transformer are inversely proportional to each other.

[0008] Preferably, the inverter series group includes inverter I 1 With inverter I 2 .

[0009] Preferably, the inverter I 1 With inverter I 2 For the same device.

[0010] Preferably, the inverter I 1 The input end of the inverter is connected to the signal input interface. 2 The output end of is connected to the input end of the first radio frequency transformer.

[0011] Beneficial effects of the utility model: The device sets a series inverter group at the signal input end to form a delay circuit, which can delay the input signal to be transmitted to the RF switch, so that the input signal reaches the RF voltage of the RF transformer faster when it reaches the RF transformer, thereby improving the transmission efficiency. The RF transformers on both sides of the RF switch adjust the RF voltage intensity in the line, and pass the high RF voltage at the signal input end through the RF switch in the form of low RF voltage, thereby improving the power capacity of the RF switch. The signal after passing through is boosted to the source signal pressure value by the reverse transformer. Because the impedance of the signal is reduced when passing through the RF switch, the loss effect on the RF switch is also greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model device;

[0013] Figure 2 It is a schematic diagram of the circuit structure of the utility model. DETAILED DESCRIPTION

[0014] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0015] Reference Figure 1 and Figure 2 The utility model provides a device for improving the power capability of a radio frequency switch, comprising a series inverter group and a radio frequency transformer, wherein the series inverter group comprises an inverter I 1 , Inverter I 2 , inverter I 1 With inverter I 2 They are the same devices and have the same functions. 1 Connect the signal input interface to the input terminal, inverter I 2 The rear end is connected to the first RF transformer. The inverter series group plays the role of a delay circuit, delaying the input signal to be transmitted to the first RF transformer, so that the input signal adapts to the input RF voltage of the first RF transformer more quickly, reaches the voltage value of the first RF transformer, and improves the efficiency of the RF voltage conversion of the first RF transformer.

[0016] Both the first RF transformer and the second RF transformer use coil-type transformers, and perform voltage transformation according to the number of turns of the coil. The first RF transformer has a transformation ratio greater than 1, which is a step-down transformer. It reduces the RF voltage of the input signal, allowing the input signal to pass through the RF switch in the form of low voltage, reducing impedance and reducing damage to the RF switch. The second RF transformer has a transformation ratio less than 1, which is a step-up transformer, and restores the stepped-down input signal. The transformation ratios of the first RF transformer and the second RF transformer are reciprocal to each other, ensuring that the RF voltage of the input signal is restored to the RF voltage pressure value after being stepped down by the first RF transformer and then stepped up by the second RF transformer.

[0017] The RF voltage of the input signal is adjusted through the RF transformer so that the RF voltage borne by the RF switch is the same as before the RF transformer transformation. Therefore, when the RF switch is subjected to large RF pressure, the RF power of the RF switch is improved, and the power capacity of the RF switch is also improved.

[0018] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined in the appended claims.

Claims

1. A device for improving the power capability of a radio frequency switch, characterized in that: It includes an inverter series group and a radio frequency transformer, wherein the radio frequency transformer includes a first radio frequency transformer and a second radio frequency transformer, the input end and the output end of the inverter series group are respectively connected to a signal input interface and the first radio frequency transformer, the output end of the first radio frequency transformer is connected to a radio frequency switch, and the input end and the output end of the second radio frequency transformer are respectively connected to the radio frequency switch and the signal output interface.

2. The device for improving the power capability of a radio frequency switch according to claim 1, characterized in that: The radio frequency transformer is a coil type transformer.

3. The device for improving the power capability of a radio frequency switch according to claim 1, characterized in that: The circuit transformation of the first RF transformer and the circuit transformation of the second RF transformer are in an inverse relationship with each other.

4. The device for improving the power capability of a radio frequency switch according to claim 1, characterized in that: The inverter series group includes an inverter I1 and an inverter I2.

5. The device for improving the power capability of a radio frequency switch according to claim 4, characterized in that: The inverter I1 and the inverter I2 are the same device.

6. The device for improving the power capability of a radio frequency switch according to claim 4, characterized in that: The input end of the inverter I1 is connected to the signal input interface, and the output end of the inverter I2 is connected to the input end of the first RF transformer.

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