A Multi-channel Power Divider of LTCC with Unequal Power

Abstract

The invention discloses a multi-path unequal-power LTCC power divider. The multi-path unequal-power LTCC power divider comprises an input end and six output ends, wherein the output ends are located on the bottom face of a ceramic substrate, the input end is located on the top face of the ceramic substrate, and the output ends and the input end are connected with an external circuit through surface SMP connectors. The output small power ratio and the output large power ratio are achieved through one-to-two unequal-power distributors and couplers respectively. The output ends are connected with snakelike strip lines with different lengths to compensate for phase position inequality brought by circuit dissymmetry and coupler output phase difference, and a required output phase position is obtained by changing the length of the snakelike strip line corresponding to the certain output end. Three unequal-power distributer units are respectively formed by a reactance network composed of lumped parameter elements and implemented through an LTCC multi-layer structure, and the size is greatly reduced. The power divider can be used as a part alone, can be conveniently connected, has the advantages of being high in amplitude and phase accuracy between output ports, high in isolation degree, small in size, high in temperature stability, convenient to use and the like, and is beneficial to mass production.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a multi-channel power divider, in particular to a low-temperature co-fired ceramic (LTCC) power divider with six channels of unequal power and unequal phase output considering SMP connection. Background technique [0002] Existing multi-channel unequal power power splitters generally adopt the form of Wilkinson unequal power power splitters, and multiple outputs are realized by cascading a plurality of different power splitter units. For the Wilkinson power splitter unit circuit, the impedance matching is generally realized through a quarter-wavelength impedance line. The realization of the impedance line adopts a planar structure. In order to achieve the balance and high isolation of the power splitter, the circuit is often complicated and takes up much space. The area is relatively large, and a relatively large impedance ratio is required to achieve a high power ratio output, ...

AI Technical Summary

Problems solved by technology

For the Wilkinson power splitter unit circuit, the impedance matching is generally realized through a quarter-wavelength impedance line. The realization of the impedance line adopts a planar structure. In order to achieve the balance and high isolation of the power splitter, the circuit is often complicated and takes up much space. The area is relatively large, and a large impedance ratio is required to achieve a high power ratio output, which increases the difficulty or cannot be realized at all in the existing process technology

When using a planar structure, the connection between multiple power divider units is also relatively complicated, which further expands the occupied area of ​​the entire circuit

Therefore, for the existing multi-channel unequal power power splitter, its limitation is that it occupies a large area and it is difficult to achieve a high power ratio output

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