CSRR structure-based ultra-wideband electrical tunable equalizer

Abstract

The invention provides a CSRR structure-based ultra-wideband electrical tunable equalizer. A stepped impedance type microstrip is adopted as a main transmission line, notch units are connected betweenthe main transmission line and bias loops, and each notch unit comprises a load absorption resistor, a CSRR resonance unit and a variable capacitance diode which are connected in series, wherein a capacitance value of the notch unit is adjusted by controlling a reverse voltage applied to the variable capacitance diode to adjust the center frequency and the equilibrium quantity of the notch unit.The CSRR structure-based ultra-wideband electrical tunable equalizer is low in path loss, can achieve wider-range power equilibrium and can precisely control frequency points and frequency bands whichneed be equalized.

Description

technical field [0001] The invention relates to the field of test instruments, in particular to an ultra-wideband electrically adjustable equalizer based on a CSRR structure. Background technique [0002] In the field of millimeter-wave radar, electronic countermeasures, and high-precision electronic measuring instruments, it is difficult to achieve a high level of gain and power frequency response characteristics of solid-state devices such as power amplifiers and traveling wave amplifiers. In order to achieve distortion-free, flat and stable transmission of system signals, it is often necessary to use millimeter-wave equalizers to compensate amplifier characteristics within a wide frequency band. At present, most of the existing millimeter-wave equalizers adopt two structural forms: mechanically adjustable or fixed, and they all have their own inherent disadvantages. Mechanical adjustable equalizers are large in size and slow in adjustment speed; fixed equalizers cannot a...

AI Technical Summary

Problems solved by technology

[0004] like figure 1 As shown, the traditional microstrip structure equalizer often adopts a multi-branch structure to increase the working bandwidth, but this structure does not have the function of adjusting the balance power, and the area is relatively large, which increases the design and processing costs.

[0005] In practical applications, the output gain curves of each power amplifier or traveling wave amplifying component are different, that is, one amplifying component needs to correspond to one equalizer, which increases the design workload and complexity

In addition, most of the notch units of existing microstrip equalizers are realized by λ / 4 open-circuit stubs based on uniform impedance, which have a relatively large area and few adjustable parameters during design

Images