Miniaturized wideband power splitter circuit

Abstract

The invention discloses a miniaturized wideband power splitter circuit, which comprises a first port, a second port, a third port, a first impedance conversion unit, a second impedance conversion unit, a first isolation resistor, a second isolation resistor and a resonant unit, wherein after entering the circuit from the first port, signals are divided into two paths of signal links; one path passes through the first impedance conversion unit to reach the second port to be output; the other path passes through the second impedance conversion unit to reach the third port to be output; one end of the first isolation resistor is positioned between the first impedance conversion unit and the second port, and the other end of the first isolation resistor is connected with the second isolation resistor; and one end of the second isolation resistor is positioned between the second impedance conversion unit and the third port, and the other end of the second isolation resistor is connected with the first isolation resistor. The miniaturized wideband power splitter circuit has the beneficial effects that the simultaneous bandwidth broadening for the return loss and the isolation degree of each port can be realized; the defects of large circuit dimension, regulation difficulty of a circuit structure, poor performance and the like in the existing bandwidth broadening technology are overcome; and meanwhile, the advantages of wide bandwidth adjustable range, compact structure and the like are realized.

Description

technical field [0001] The invention belongs to the technical field of radio frequency wireless communication, and in particular relates to a miniaturized broadband power divider circuit. Background technique [0002] A power splitter is a multi-port microwave network device that divides the input power into equal or unequal outputs. It is widely used in phased array radar and multi-channel wireless communication systems. Broadband, miniaturized, and low-loss devices have always been the research hotspots of microwave radio frequency circuits, and with the continuous development of broadband antennas, broadband filters and other devices, the requirements for broadband power splitters are getting higher and higher, and the demand is also increasing. getting bigger. [0003] For the power divider, the main design requirements are: the circuit matching of each port, the isolation between the ports is high, when one of the ports fails, it will not affect the normal operation of...

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Problems solved by technology

[0007] In view of this, the present invention aims at the shortcomings of cascaded and branch-loaded broadband power splitters, large circuit size and large loss when the microstrip line is realized, complex circuit structure and poor transmission performance when the lumped method is realized, and proposes A miniaturized broadband power divider circuit, which can realize a high-performance broadband power divider circuit only by loading a resonant unit between two branch isolation resistors

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