Multilevel centralized parameter power distribution circuit for frequency modulation frequency band

Abstract

The invention mainly discloses a multilevel centralized parameter power distribution circuit for a frequency modulation frequency band, which can greatly reduce the excessive large distribution circuit area of the frequency modulation frequency band due to the wavelength problem, improve distribution balance, reduce circuit insertion loss and is particularly applicable to high power distributionand multi-antenna distribution circuits in the frequency modulation frequency band. The method is mainly characterized in that the whole circuit is composed of mutual inductance coils, coupling capacitors between self-inductance coils and terminals distributed symmetrically and grounding capacitors; and the whole circuit is small in size and compact in structure without any additional loss causedby other magnetic and other loss devices. The method is further specifically characterized in that the circuit is extended to be composed of a two-level twisted mutual inductance coil, a two-level self-inductance coil, a distributed end-to-end coupling capacitor and a to-ground coupling capacitor on the basis of a single-level twisted mutual inductance coil and a single-level self-inductance coil. The mode can greatly improve the radio frequency bandwidth and greatly reduce the insertion loss.

Description

Technical field [0001] The invention relates to a frequency-modulation frequency band multi-level centralized parameter power distribution circuit rate distribution field, which belongs to the technical improvement of the traditional orthogonal power distribution circuit; in particular, it relates to a multi-level centralized parameter power distribution circuit; the traditional distribution circuit generally adopts a transmission line transformer form or distribution Orthogonal form of parametric form. The orthogonal circuit in the form of a transmission line transformer is mainly composed of a ferrite magnetic ring, which is the primary culprit of insertion loss, which will cause excessive insertion loss, and large insertion loss will cause serious heat generation, so it cannot Achieve high-power distribution; and because the FM frequency band is lower and the wavelength is longer, the size of the distribution circuit in the form of distributed parameters will be particularly ...

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Problems solved by technology

[0005] Therefore, the balance of the distributor, insertion loss, port standing wave, and isolation between ports are some of its particularly important indicators. Considering the convenience of use, it is generally required that the volume of the distributor be as small as possible to withstand power. As large as possible; however, its wavelength is longer in the FM frequency band, and the traditional splitter manufacturing method is difficult to meet the small size requirements. In addition, the traditional circuit design basically uses ferrite as the core component, although ferrite has a wide frequency band , high stability, small size and Deng characteristics, but ferrite can introduce high insertion loss, so there is an urgent need for a design method that can improve balance and isolation between ports, reduce insertion loss and standing wave ratio At the same time, the volume of the circuit board can be greatly reduced;

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