Design of Dual-Band Printed Dipole Antennas and Study of Active Antenna Systems
Date Issued
2005
Date
2005
Author(s)
Li, Chien-Hua
DOI
zh-TW
Abstract
In this thesis, we have designed two antennas, one is double step-type microstrip line fed rectangular slot dipole antenna operated at the band of IEEE 802.11b, the other is the microstrip line fed dual-band printed dipole antenna operated at the band of IEEE 802.11a/b/g. Full-wave simulation software IE3D & HFSS used in this thesis, the resonant frequencies, bandwidth, return loss, input impedance and radiation pattern are studied completely by various antenna size parameter. Step-type MS line feeding enhances the bandwidth, the bandwidth covering 2GHz~3GHz is about 41.2%.Furthermore,we try to reduce ground size, and then we trade-off between size and bandwidth. MS line fed dual-band printed dipole antenna are studied to cover 2.4GHz~2.4835GHz, 5.15GHz~5.35GHz, 5.725GHz~ 5.825GHz for all WLAN IEEE802.11a/b/g.
Finally, we combine with the low noise amplifier and the double step-type microstrip line fed rectangular slot dipole antenna, and then we measure the radiation pattern for this active antenna module. The total noise figure of all receivers is discussed. The research of the RF receiving system will be mentioned in this thesis, too.
Subjects
微帶天線
雙頻天線
主動天線
Microstrip Antenna
Dual-Band Antenna
Active Antenna
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-94-R92942063-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):81df5f46225308b007db148c8132072f