Coupled-line power splitter with integrated high-order harmonic suppression and broadband band-pass filtering

Abstract

The invention discloses a coupling wire power divider capable of higher harmonic inhibition and broadband bandpass filtering. The power divider comprises an input port, a first output port, a second output port, pairs of coupling wires, two microstrip lines, a dielectric plate and a through hole, wherein the input and output ports are all placed in the top of the dielectric plate; three pairs of coupling wires are connected horizontally, and other two pairs of coupling wires are placed vertically; the two microstrip lines are connected to the tail ends of two pairs of coupling wires respectively; the dielectric plate serves as a substrate of a printed circuit, and used to bear the whole circuit; and the tail ends of the coupling wires are connected with the grounding surface via the through hole. The coupling wire power divider capable of higher harmonic inhibition and broadband bandpass filtering realizes super wide passband and super wide isolation strip, within the passband range, the insert loss is lower and the phase difference is stable, effective matching and isolation are realized, and the power divider has good popularization prospects.

Description

technical field [0001] The invention relates to a coupled line power divider integrating high-order harmonic suppression and broadband band-pass filtering functions, which realizes the performance of ultra-wide passband and ultra-wideband isolation band, and belongs to the technical field of microwave transmission devices. Background technique [0002] The power divider, referred to as the power divider, is an important microwave passive device in the wireless communication system. Power dividers are widely used in the field of wireless communication, such as military radar, electronic detection, electronic countermeasures, mobile phone communication, television, remote control, etc., which need to distribute and process electronic signals. A power divider is a simple three-port network, which is a device that divides the energy of one input signal into two or more channels of equal or unequal energy, and can also conversely synthesize the energy of multiple signals into one...

AI Technical Summary

Problems solved by technology

The power divider topology with equal amplitude and in-phase output proposed by Wilkinson in the early days was realized by using the impedance transformation characteristics of the quarter-wavelength transmission line. This design structure is simple, but it can only work in a single frequency band, which is far away. Can not meet the requirements of dual-frequ

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