A Microstrip Sector Array Cascade Decoupling Circuit

Abstract

The invention discloses a cascade decoupling circuit of a microstrip fan array. The microstrip fan array cascade decoupling circuit is composed of multiple groups of microstrip lines and fan lines and a dielectric substrate, wherein a set of high-resistance microstrip The line and a group of fan arrays form a first-level decoupling unit, and the microstrip fan-shaped array cascade decoupling circuit is cascaded by four-level decoupling units. The microstrip fan array cascaded decoupling circuit is used for decoupling the integrated circuit power supply, which can prevent the radio frequency AC signal from being coupled to other chips through the port of the power supply, thereby affecting the operation of the entire circuit. The effective decoupling bandwidth of the microstrip fan array cascaded decoupling circuit is 1GHz-4GHz. In this frequency band, the S21 between the power supply and the chip is less than -70db, which can effectively prevent the RF AC signal from being coupled to other chips through the power supply. .

Description

technical field [0001] The invention relates to the field of power supply integrity design, in particular to a broadband microstrip sector array cascaded decoupling circuit. Background technique [0002] In modern communication systems, the transmitter and receiver are often powered by the same set of DC power supply. The problem brought about by this is that the high-power transmission signal may be coupled into the receiver through the DC power supply. Due to the excessive power of the transmission signal, the receiver is blocked, thus Loss of ability to receive small signals. As electronic devices operate at higher frequencies, the frequency of signals coupled into the power path also increases. The effective operating frequency of traditional lumped parameter decoupling components is generally up to several hundred megahertz. However, the operating frequency of the chips we use to design integrated circuits is often in GHz, so the traditional lumped component power supp...

AI Technical Summary

Problems solved by technology

The effective operating frequency of traditional lumped parameter decoupling components is generally up to several hundred megahertz. However, the operating frequency of the chips we use to design integrated circuits is often in GHz, so the traditional lumped component power supply decoupling is in this Bands don't work well

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