Novel double-frequency reverse-phase power divider

Abstract

A novel double-frequency reverse-phase power divider comprises an input port, a first output port, a second output port, two double-section micro-strip lines, a metal ground plane, a lumped resistor, a dielectric-slab and a through hole. The first output port and the second output port are positioned at two opposite ends of the dielectric-slab respectively and used for outputting signals with 180-degree phase difference in a double-frequency band, the two double-section micro-strip lines are vertically and parallelly arranged and positioned at the top and the bottom of the dielectric-slab respectively, the metal ground plane includes a top layer, a middle layer and a bottom layer which are arranged on the front, a middle layer and the back of the dielectric-slab respectively, the lumped resistor is arranged on the through hole and used for isolating the first output port and the second output port, the dielectric-slab is a substrate with a printed circuit and used for bearing the whole circuit, and the through hole is used for connecting the three layers of the metal ground plane and connecting the lumped resistor and the ground plane. The double-frequency reverse-phase power divider can obtain a wide bandwidth, a fine isolation effect, small insertion loss and stable 180-degree phase difference in dual bands.

Description

technical field [0001] The invention relates to a novel dual-frequency anti-phase power divider, specifically a dual-frequency equal-division power divider with a phase difference of 180° between two output ports, and belongs to the technical field of microwave transmission devices. Background technique [0002] A power divider, also known as a power splitter, is a device that divides the energy of one input signal into two or more outputs with equal or unequal energy, and can also conversely combine the energy of multiple signals into one output. called a combiner. According to the phase relationship of the output terminal, the power divider can be divided into a non-inverting power divider and an inverting power divider. Inverting power dividers are widely used in circuits such as mixers, power amplifiers, frequency multipliers, and balanced antennas. Especially in balanced push-pull circuits, inverting power dividers are receiving more and more attention because of their...

AI Technical Summary

Problems solved by technology

However, at present, the bandwidth of the dual-frequency inverting power divider through branch matching is narrow, and the performance stability of the dual-frequency inverting power divider matched with lumped capacitance and inductance is poor at high frequencies.

[0004] Therefore, it is necessary to provide a broadband dual-frequency inverting power divider with good matching and isolation effects, so that it can overcome the problems of narrow dual-band, large insertion loss, and large phase difference in the existing dual-frequency inverting power divider. stable defect

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