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Radio-frequency power device with adjustable operating frequency

A technology of radio frequency power devices and operating frequency, applied in the field of radio frequency and microwave, can solve the problems of narrow application range, increase process difficulty, complexity and cost, limit the working range of radio frequency power devices, etc., to reduce process complexity and cost , the effect of expanding the range

Active Publication Date: 2013-01-16
KUNSHAN HUATAI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current input and output pre-matching network uses the LC resonant circuit to increase the impedance of the input and output. Because the L inductance and C capacitance of the current LC resonant circuit are fixed and cannot be changed, this makes the matching circuit work. In a narrower frequency range, which severely limits the range in which RF power devices can operate
At present, RF power devices need to design specific input and output pre-matching circuits to work at a specific frequency, such as around 2.14GHz, but because the operating frequency of the input and output pre-matching networks is narrow, in order to improve the yield, it is necessary to Strictly control the value of each device in the input and output pre-matching network, which increases the difficulty, complexity and cost of the process. Moreover, the RF power device works in a narrower frequency range and has a narrow application range.

Method used

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  • Radio-frequency power device with adjustable operating frequency
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  • Radio-frequency power device with adjustable operating frequency

Examples

Experimental program
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Effect test

no. 1 example

[0027] Such as image 3 and Figure 8 As shown, the difference between Embodiment 1 of the present invention and the traditional structure is that the original first capacitor module 4 is changed into a variable capacitor module 11, and the capacitance value of the variable capacitor module 11 can be controlled by an external control voltage The signal Vtrcl is changed, that is, the resonant frequency of the circuit composed of the variable capacitance module 11, the second inductance 5 and the tube input capacitance, so that the radio frequency power device can work in different frequency ranges. The specific connection relationship is as follows: an adjustable working The frequency radio frequency power device includes an input pre-matching network, a power amplifier module and an output pre-matching network connected in sequence, the input pre-matching network includes a first inductance and a second inductance connected in series in sequence, and the input pre-matching net...

no. 2 example

[0030] Such as Figure 5 and Figure 8As shown, the difference between Embodiment 2 of the present invention and the traditional structure is that the power amplifier module of the present invention includes a power amplifier 6 and a variable capacitance module 11, so that the output capacitance includes two parts of the device itself and the variable capacitance The module 11 can change the size of the output capacitor by changing the voltage of the control Vctrl terminal. The fifth inductance 7 and the second capacitor module 8 are used to resonate the output capacitor, so that the resonant frequency changes with the voltage of the control Vctrl terminal. , so that the radio frequency power device can work in different frequency ranges, the specific connection relationship is as follows: a radio frequency power device with adjustable operating frequency, including an input pre-matching network, a power amplifier module and an output pre-matching network connected in sequence...

no. 3 example

[0032] Such as Figure 6 and Figure 9 As shown, the difference between Embodiment 3 of the present invention and the traditional structure is similar to that of Embodiment 1. Its input matching network includes another variable capacitance module, and the placement position is the same as that of Embodiment 1, except that The components of the variable capacitance module are different from the variable capacitance module 11 in Embodiment 1. The variable capacitance module in Embodiment 3 includes a third capacitor 15 and a variable inductance module 16. The third capacitor 15 and the variable capacitance module can be The variable inductance module 16 is connected, and the other end of the third capacitance 15 is connected with the first inductance 3 as the output Vtrcl end of this variable capacitance module; the variable inductance module 16 includes a third The inductor 17, the fourth inductor 18 and the variable resistor 19, if the variable resistor 19 is fully opened, t...

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PUM

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Abstract

The invention discloses a radio-frequency power device with adjustable operating frequency, comprising an input prematching network, a power amplifier module and an output pre-matching network which are connected in sequence; the capacitance or inductance value of the input prematching network, the output pre-matching network and the power amplifier module are not fixed and can be adjusted and controlled. By changing the capacitance or inductance value, the work frequency of the power device can be changed, and the range of the work frequency of the input prematching network and the output pre-matching network can be extended accordingly, thus the work range of the radio-frequency power device can be extended, the design process complexity and cost of the radio-frequency power device are reduced, and the radio-frequency power device can work in the occasions needing various different work frequency.

Description

technical field [0001] The invention relates to the technical field of radio frequency and microwave, in particular to a wide range of radio frequency power devices with adjustable working frequency used in the field of radio frequency and microwave. Background technique [0002] RF power devices, such as LDMOS, GaAs-HBT, etc., are widely used in power amplifiers in the RF and microwave fields. RF power devices can provide very high output power, usually greater than 100 watts, which requires a lot of power transistors in parallel , resulting in very low input and output impedances. Usually, the input and output impedances of the power amplifier are fixed at 50 ohms. At present, in order to solve the problem of the impedance matching circuit, it is necessary to add a pre-matching network to the input and output ends of the power amplifier. The power amplifier alone is capable of operating over a very wide frequency range, from dc to one third of the cutoff frequency ( ). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/56
CPCH01L2224/49175
Inventor 曾大杰余庭赵一兵张耀辉
Owner KUNSHAN HUATAI ELECTRONICS TECH CO LTD
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