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Multi-layer RF chip type balance-to-unbalance converter

A converter and unbalanced technology, which is applied in the field of multi-layer RF chip type balanced to unbalanced converters, can solve problems such as inability to reduce components, and achieve the effect of maintaining stability

Inactive Publication Date: 2005-09-28
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in materials with low dielectric constant, it is impossible to shrink the device to the size of the chip

Method used

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  • Multi-layer RF chip type balance-to-unbalance converter
  • Multi-layer RF chip type balance-to-unbalance converter
  • Multi-layer RF chip type balance-to-unbalance converter

Examples

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Embodiment Construction

[0049] image 3 It is a schematic diagram of the equivalent circuit of the multi-layer RF chip type balanced to unbalanced converter of the present invention. Such as image 3 As shown, the equivalent circuit 300 of the multi-layer RF chip converter is basically composed of an unbalanced port 332, a first balanced port 334a, a second balanced port 334b, and a plurality of vertical coupling transmission lines. Each vertical coupling transmission line has a corresponding coupling coefficient, and the equivalent circuit has at least two different coupling coefficients. image 3 A dashed box represents a section of coupled transmission line. Each section of coupled transmission line is composed of a first line portion and a second line portion. The first line portion and the second line portion are each There are two ends. The unbalanced port 332 is an input terminal, and the two balanced ports 334a and 334b ​​are output terminals.

[0050] by image 3 It can be seen that there are n...

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Abstract

A multi-layer RE chip type balance-unbalance converter has a multi-layer dielectric structure, whose equivalent circuit is composed of an input port, two output ports, and multiple even-section coupled transmission line consisting of a first and a second lines symmetrical to the center point of the said dielectric structure. Its advantage is very good phase and amplitude balance degree.

Description

Technical field [0001] The present invention relates to a balance-to-unbalance (balun) converter. In particular, it relates to a multilayer radio frequency chip balun (multilayer radio frequency chip balun). This converter is suitable to be made into chip-type components and used in wireless local network (wireless local network) and personal mobile communication equipment. Background technique [0002] A balanced-to-unbalanced converter is a device that converts an unbalanced structure or signal and a balanced structure or signal. The characteristic of a balanced signal is that two signals have the same magnitude but a phase difference of 180 degrees. Many analog circuits often require balanced output and input, which can reduce noise, improve the occurrence of higher harmonics, and increase the dynamic range of the circuit. [0003] There are many types of balanced to unbalanced converters, which are mainly divided into active and passive. Generally, passive balanced to unbalan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F5/00H01P5/10H01P11/00H04B7/00
Inventor 汤敬文沈志文
Owner IND TECH RES INST
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