Gysel-type power divider based on substrate integrated waveguide

Abstract

The invention discloses a Gysel-type power divider based on a substrate integrated waveguide, and the power divider comprises a first port, a second port, a third port, a fourth port, and a fifth port. The first port is disposed on a central line of the power divider, and the power divider is symmetric relative to the central line. The first port is a common port, and the second and third ports are branch ports. The fourth and fifth ports are load ports. The power divider employs a substrate integrated waveguide structure, and comprises an upper metal surface, a central dielectric plate, and a lower metal surface. Two rows of second metal post line columns are disposed between the upper metal surface and the lower metal surface. Each row of second metal post line columns comprises a plurality of metal columns, and each metal column contacts with the upper metal surface and the lower metal surface. The power divider meets the actual demands of high power and high isolation, is small in size, is light in weight, and is suitable for the power combination and distribution of various types of SIW systems.

Description

technical field [0001] The invention belongs to the field of power dividers, in particular to a Gysel type power divider based on a substrate integrated waveguide. Background technique [0002] Power splitters are important components in modern communication systems and are widely used in systems such as microwave communication, electronic countermeasures, frequency synthesis, and microwave measurement. The power divider is mainly used for the distribution and synthesis of energy. Generally, there is one main port and more than two branch ports. Whether the split port power is exactly the same can be divided into two types: equal split and unequal split; according to whether the split port phase is the same, it can be divided into two types: equal phase and unequal phase; according to the power capacity, it can be divided into small power, medium power and High power, etc.; according to the form of transmission line, it can be divided into microstrip type, coaxial type, wav...

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Problems solved by technology

At the same time, there are more and more introductions about substrate integrated waveguide power dividers, such as literature 1 (“Y‐junctionpowerdividerbasedonsubstrateintegrated waveguide”, Electronics Letters 8thDec.2011Vol.47No.25) or literature 2 (“MultilayerSubstrateIntegratedWaveguideFour‐WayOut‐of‐PhasePowerDivider”, IEEE Transactions on Microwave Technology and Techniques, Vol.57, No.12, Dec2009, pp3469‐3476); however, the main disadvantage of this type of power splitter is that, referring to the traditional Wilkinson power splitter, the isolation resistor is located in the center of the split arm, which cannot withstand high Power, and due to the parasitic effect of the isolation resistance, it cannot work to a very high frequency; on the other hand, based on the traditional waveguide form, it cannot be isolated, or it needs a multi-layer circuit to isolate; these shortcomings affect this type of power splitter in high power application under

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