Differential bandpass filters for WLAN and antenna switch module for GPRS applications using LTCC process
Date Issued
2006
Date
2006
Author(s)
Huang, Chien-Wei
DOI
en-US
Abstract
There are two parts in this thesis. The first part is the design of differential bandpass filters with two transmission zeros for WLAN. The differential structure can reduce the discrete components, such as baluns, of the front end module. It can also improve the poor ground and suppress the common-mode interference. Besides, two zeros can increase the rejection of the stopband. The second part is the design of an antenna switch module for tri-band GSM handset. This module consumes no DC power in receiving mode, so it is especially suitable for handset application. Two circuits are implemented by LTCC process which is chosen for low loss and multi-layer structure. It will give better insertion loss and more freedom in differential device design.
Subjects
低溫共燒陶瓷
無線區域網路
差動
帶通濾波器
天線開關模組
LTCC
differential
WLAN
filter
switch
Type
thesis
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