Analysis and design of planar, spiral-shaped, transmission-line transformers

被引：13
作者：
Post, John E. [1 ]
机构：
[1] Embry Riddle Aeronaut Univ, Dept Elect & Comp Engn, Prescott, AZ 86301 USA
来源：
IEEE TRANSACTIONS ON ADVANCED PACKAGING | 2007年 / 30卷 / 01期
关键词：
integrated passives; planar transmission-line transformer (TLT);
D O I：
10.1109/TADVP.2006.890208
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Coupled microstrip line theory is applied to analyze planar Ruthroff transmission-line transformers (TLTs). The results demonstrate that the TLT's low frequency response improves as the microstrip line's even-mode impedance increases, whereas the ratio of load impedance to the line's odd-mode impedance controls the high frequency response. Analysis of an approximate model of coupled microstrip lines formed into a spiral leads to a technique for predicting the performance of planar, spiral-shaped, Ruthroff TLTs. Microwave measurements up to 10 GHz are compared with predictions from the model for regular and suspended Ruthroff TLTs fabricated through a multichip-module deposited (MCM-D) process.
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页码：104 / 114
页数：11
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