Active diplexer implemented by using LTCC process and discrete transistors.
Date Issued
2011
Date
2011
Author(s)
Huang, Hung-Shuo
Abstract
This thesis realized an active diplexer using composite left/right-handed transmission line. By controlling the phase shift between gate line and drain line, we can have cancellation in forward output port and amplification in backward output port at lower frequency and the opposite characteristic at higher frequency. Because its characteristic is similar to passive diplexer in the front-end of a transceiver system, it is called an active diplexer.
We find the possible solutions based on mathematical analysis. By controlling the phase of transmission lines at gate and drain, we can control the frequency of maximum gain at forward and backward direction. We implement passive elements in LTCC process and using HJFET transistors NE3512S02 from NEC. The active diplexer is designed to work at 2.4GHz and 5.2GHz
Keyword: distributed amplifier, diplexer, composite left/right-handed transmission line.
Subjects
distributed amplifier
diplexer
composite left/right-handed transmission line
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-100-R96943145-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):84f81319c236dc6d092265b437562541