Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/20965
Title: Broadband phase shifter design for phased array radar systems
Authors: TANG XINYI
Keywords: Phase shifter, phased array radar, computer aided design, power splitter, quadrature power splitter, dual-band circuit
Issue Date: 20-Aug-2010
Source: TANG XINYI (2010-08-20). Broadband phase shifter design for phased array radar systems. ScholarBank@NUS Repository.
Abstract: Phase shifters are one of the key control components in phased array radar systems to electrically shape and steer the antenna beam. In modern radar applications where multi-function capability and communication security are required, broadband phase shifters are essential. This work mainly aims to improve the conventional phase shifters and explore novel topologies for broadband and high performance designs. One set of general formulas, which includes the formulas of conventional method as a special case, is found for the high-pass/low-pass phase shifter design, and closed-form equations for bandwidth enhanced and dual-band loaded-line phase shifter are provided. Several novel topologies using a phase slope alignment concept are also proposed, where trade-offs between phase error, return loss and bandwidth are possible. Based on this method, an octave band phase shifter with an RMS phase error of 3.6? and a return loss larger than 15 dB (|S11|<-15dB) was designed. Further study of the all-pass phase shifter is also presented to establish multi-octave band performance. As a conclusion, a phase shifter guide table is built for designers? reference. Other novel microwave components associated with the insertion phase, e.g. broadband quadrature and dual-band power dividers are also covered.
URI: http://scholarbank.nus.edu.sg/handle/10635/20965
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
TangXY.pdf3.52 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

555
checked on Dec 11, 2017

Download(s)

3,577
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.