Ultra-wideband eight-path Wilkinson power divider based on gradient strip line

Abstract

The invention discloses an ultra-wideband eight-path Wilkinson power divider based on a gradient strip line, which is characterized in that a single-side gradient strip line is used for replacing a plurality of 1/4 wavelength impedance transformers in a traditional power divider, a thin film sheet resistor is used as an isolation resistor, and a microwave millimeter wave wideband high-isolation eight-path power division network is realized; and moreover, the overall dimension is smaller, and the isolation resistance is less. In addition, the low-frequency impedance bandwidth can be expanded by increasing the length of the tapered line, that is, the longer the tapered line is, the wider the impedance bandwidth is. Therefore, the invention also provides a new design thought, and a designer can choose between the size and the bandwidth to meet a proper design requirement. The antenna is simple in structure, low in manufacturing cost and small in size, can become an alternative choice in systems such as communication and phased array radars, and has an important prospect in military and commercial application.

Description

technical field [0001] The invention belongs to the field of microwave passive devices, and in particular relates to an ultra-wideband 8-way Wilkinson power divider based on tapered lines. Background technique [0002] A power divider is a widely used multi-port microwave device. It can divide an input signal into two or more signals at a set ratio during operation, and at the same time, the output signals can be in the same phase or reversed in phase. Or orthogonal characteristics; on the other hand, when the power splitter is used in the reverse direction, it can combine the power of two or more signals into one output to achieve the purpose of power synthesis. As a very important microwave and millimeter wave component, the power splitter is widely used in radar, electronic countermeasures, 5G and other military and civilian fields. Especially in the phased array radar system, the power splitter is often used as the feed network of the antenna array to use. In practical...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ultra-wideband 8-way Wilkinson power splitter based on tapered striplines, which overcomes the fact that the existing power splitters work alone in the millimeter wave or relatively low-frequency microwave frequency bands, and do not realize the combination of millimeter waves and low-frequency microwaves. Full coverage, and the existing broadband power splitter design is complex, large in size, and a large number of isolation resistors are used

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