Novel broadband passive equalizer

An equalizer and broadband technology, applied in impedance networks, electrical components, multi-terminal-pair networks, etc., can solve the problem that high-pass characteristics cannot flexibly select attenuation frequency points, etc., to optimize amplitude-frequency characteristics and reliability, and adjust attenuation frequency. The effect of point, flexible attenuation frequency point

Pending Publication Date: 2020-08-28
四川博谱微波科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the literature focuses on the derivative structure of RL, RC and the mixture of the two passive equalizers, which only have high-pass characteristics and cannot flexibly select the attenuation frequency point.

Method used

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  • Novel broadband passive equalizer
  • Novel broadband passive equalizer
  • Novel broadband passive equalizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the equalizer is mainly composed of two series resonant units and two parallel resonant units connected in series via a microstrip transmission line.

[0027] The structure of series resonant unit and parallel resonant unit is as follows figure 2 Shown, attached figure 2 The one on the left is the series resonant unit. The series resonant unit is composed of a resistor, an inductance, and a capacitor in series through a microstrip transmission line and then grounded.

[0028] Attached figure 2 The one on the right is the parallel resonant unit. The parallel resonant unit is composed of a resistor, an inductor and a capacitor in parallel with each other through a microstrip transmission line.

[0029] In this embodiment, R1, L1, and C1 are connected in series and grounded through a microstrip transmission line to form a series resonant unit 1, R2, C2, and L2 are connected in parallel to each other through a microstrip transmission line to form a par...

Embodiment 2

[0037] This embodiment is basically the same as embodiment 1, the difference is that in this embodiment, as Figure 5 As shown, the equalizer is composed of 4 series resonant units in series.

Embodiment 3

[0039] This embodiment is basically the same as embodiment 1, the difference is that in this embodiment, as Image 6 As shown, the equalizer is composed of two parallel resonant units in series.

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Abstract

The invention relates to the technical field of power equalization circuits, and discloses a novel broadband passive equalizer that is formed by cascading multiple stages of resonance units through amicrostrip transmission line. According to the structure, the resonant frequency and the resonant bandwidth are changed by changing inductance and capacitance values in a single resonant unit; different frequencies and different bandwidth signals are attenuated, then the attenuation is determined by changing the value of the absorption resistor R, and finally, the resonance units which are connected in series and in parallel are cascaded to realize the equalization of signals in the whole broadband. Performance influence caused by welding can be compensated by changing the length and the widthof the microstrip transmission line. All the resonance units of the structure have good isolation degree, and good adjustability is achieved in the aspect of debugging. The series or parallel structure of the single-stage resonance units and the combination mode and stage number of each stage can be selected according to actual problems. The broadband passive equalizer is connected in series to the foremost end of an input signal of a cascaded power amplifier, so that the gain flatness of the power amplifier is well improved.

Description

Technical field [0001] The invention relates to the field of power equalization circuits, in particular to a new type of broadband passive equalizer. Background technique [0002] With the rapid development of communications, radar, electronic countermeasures and other fields in military and civilian use, the RF front-end transmitter system plays an increasingly important role in the modern communication era. Microwave power amplifiers are the most important in the RF front-end transmitter system. The quality of the components directly determines the performance of the entire transmitter system. People demand higher and higher power amplifiers. High power will inevitably increase the number of stages of the power amplifier. Cascading will inevitably bring about the two-stage power amplifier. Inter-stage mismatch, the direct result is the fluctuation of the output power of the power amplifier. Since the output power of the previous stage is used as the input power of the subsequen...

Claims

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Application Information

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IPC IPC(8): H03H7/52
CPCH03H7/52
Inventor 雷奇
Owner 四川博谱微波科技有限公司
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