Gilbert cell type multiplier

By incorporating load inductors and series resonance circuits, the Gilbert cell type multiplier achieves miniaturization and efficient suppression of unwanted waves, addressing the size limitations of conventional designs.

WO2025154382A1 Publication Date: 2025-07-24FUJIKURA LTD
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Patent Information

Application Number
PCT/JP2024/040838
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-01-16
Filing Date
2024-11-18
Publication Date
2025-07-24

AI Technical Summary

Technical Problem

Conventional Gilbert cell type multipliers face challenges in miniaturization due to the large mounting area required by the balun, which suppresses output harmonics but limits circuit size reduction.

Method used

The integration of load inductors and series resonance circuits in the output circuit, along with auxiliary inductors and resistors, to suppress unwanted waves and facilitate miniaturization.

Benefits of technology

Enables the creation of a smaller Gilbert cell type frequency multiplier that effectively suppresses unnecessary waves while maintaining functionality.

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Abstract

The present invention comprises an output circuit in which a pair of load terminals are connected to a pair of output terminals in a main circuit. The output circuit comprises: a first load inductor having a first end connected to a power supply and a second end connected to one of the pair of load terminals; and a second load inductor having a first end connected to the power supply and a second end connected to the other of the pair of load terminals. The inductance of each of the first load inductor and the second load inductor is set so as to suppress the output of unnecessary waves to the outside.
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