Left/right-hand transmission line using active inductor in 0.18μm CMOS process and application on quadrature power splitter
Date Issued
2014
Date
2014
Author(s)
Chen, Po-Wei
Abstract
This thesis presents the implementation of a 3-7.6 GHz broadband quadrature power splitter (QPS) by combining both active and passive processes. The active process used is TSMC 0.18μm CMOS and the passive process used is FR4 printed circuit board (PCB). We use bond wire interconnects to combine the T18 chip and the PCB.
This QPS uses CRLH transmission line theory for creating the positive phase and RH transmission line to create negative phase. Since conventional on chip spiral inductors has inductance values proportional to the area occupied and its parasitic resistance is proportional to its area, the quality factor (Q factor) is too low. This thesis uses an active inductor to replace the traditional passive spiral inductors to miniaturize the circuit area and obtain higher Q factor. Chip size is 250μm x480μm, power consumption is about 4.69mW, is less than -10dB, and the output amplitude imbalance is about 0.5dB at 3~7.6GHz.
Subjects
主動電感
人造左右手傳輸線
90o功率分離器
Type
thesis
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