Document Type	Master's Dissertation
Author	De Haaij, David Martin
URN	etd-09222005-084315
Document Title	The design of feed networks for enhanced bandwidth operation of microstrip patch antennas
Degree	M Eng (Electronic Engineering)
Department	Electrical, Electronic and Computer Engineering
Supervisor	Advisor Name Title Prof J Joubert
Keywords	Strip transmission lines Microstrip antennas Microwave antennas
Date	2003-09-01
Availability	unrestricted
Abstract This dissertation investigates a simple LC-matching network for the impedance bandwidth enhancement of microstrip patch antennas. Wideband impedance matching is a standard practice for active circuits. Simple impedance matching of antennas is also quite common, but data on wideband impedance matching of antennas is not found very much in the open literature. The matching circuit presented consists out of a resonant LC-circuit with a quarterwave matching line as part of the design. Results for a number or experimental antennas, on which the new technique was applied, are included in the report. A well-defined design procedure is also presented, and results in a relatively small circuit to implement. It is shown that the antenna VSWR bandwidth could be improved to more than double the original size in most of the antennas investigated.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    00front.pdf 862.30 Kb 00:03:59 00:02:03 00:01:47 00:00:53 00:00:04   01chapter1.pdf 438.59 Kb 00:02:01 00:01:02 00:00:54 00:00:27 00:00:02   02chapter2.pdf 990.50 Kb 00:04:35 00:02:21 00:02:03 00:01:01 00:00:05   03chapter3.pdf 2.28 Mb 00:10:33 00:05:25 00:04:45 00:02:22 00:00:12   04chapter4.pdf 1.14 Mb 00:05:15 00:02:42 00:02:21 00:01:10 00:00:06   05chapter5.pdf 2.43 Mb 00:11:14 00:05:46 00:05:03 00:02:31 00:00:12   06chapter6.pdf 259.60 Kb 00:01:12 00:00:37 00:00:32 00:00:16 00:00:01   07references.pdf 394.21 Kb 00:01:49 00:00:56 00:00:49 00:00:24 00:00:02