Design of Phase Shifters with Ladder Stubs Via Real Frequency Technique

ŞENGÜL M.

Journal of Circuits, Systems and Computers, vol.30, no.7, 2021 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 7
  • Publication Date: 2021
  • Doi Number: 10.1142/s0218126621501127
  • Journal Name: Journal of Circuits, Systems and Computers
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Applied Science & Technology Source, Computer & Applied Sciences, INSPEC
  • Keywords: High-pass, ladder networks, lossless networks, low-pass, phase shifters, real frequency technique, stubs
  • Istanbul Kültür University Affiliated: No

Abstract

Generally at high frequencies, lumped-elements are not preferred because of their limited range of values. Therefore, in this work, a kind of phase shifter formed with ladder stubs is studied and a new approach to design phase shifter's low pass and high pass sections which are composed of series or shunt connected open-ended or short-ended stubs is proposed. In the approach, since the main focus is to form low pass and high pass two-port sections, switching process is not considered. First, the designer selects the section type and the total number of stubs in the sections; it is not necessary to fix the two-port section topologies and not necessary to derive the characteristic impedance and delay expressions for the stubs. In the example, 5-stub two-port sections of a 180° phase shifter are designed by means of the proposed approach.