Negative slope equalizer with high equalization quantity, high linearity and high return loss

Abstract

The invention discloses a negative slope equalizer with high equalization quantity, high linearity and high return loss. The equalization circuit comprises an unbalanced bridging T-type network, a parallel resonance unit, two symmetrical linear equalization units, a series resonance unit, an input port and an output port. The unbalanced bridging T-type network comprises a first impedance module, a second impedance module, a shunt impedance module coupled at the joint of the first impedance module and the second impedance module, and a bridge impedance module connected in parallel with the first impedance module and the second impedance module which are connected in series; the impedance product of the first impedance module and the second impedance module is smaller than the impedance product of the shunt impedance module and the bridge impedance module; the parallel resonance unit is connected in parallel with the bridge impedance module; the series resonance unit is connected in series with the shunt impedance module; the two symmetrical linear equalization units are respectively connected between the input port and the first impedance module and between the output interface and the second impedance module. According to the scheme, the signal balance quantity in a limited circuit area is improved, and the linear trend is optimized.

Description

technical field [0001] Embodiments of the present invention relate to microwave transmission technology, in particular to a negative slope equalizer with high equalization value, high linearity and high return loss. Background technique [0002] With the widespread use of microwave devices in military and civilian fields, the demand for microwave devices is reflected in the integration of wider frequency bands. As a resident device of the RF front-end module, the amplifier can integrate wider and wider frequency bands. In the design of broadband amplifiers, the amplified signal often changes unidirectionally with frequency, resulting in the gain not being consistent within a certain frequency band. The equalizer can keep the amplifier gain consistent in the whole frequency band and prevent the amplifier from saturating. [0003] The current equalizer has a small amount of equalization. In order to increase the overall equalization amount, multiple equalization circuits are...

AI Technical Summary

Problems solved by technology

[0003] The current equalizer has a small amount of equalization. In order to improve the overall equalization amount, multiple equalization circuits are often cascaded to connect, and the circuit area is relatively large.

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