Dual-band modified cross-coupler with large power division ratios

Kranti Kumar Katare*, S. P. Singh

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

This paper presents the design and optimization of microstrip cross coupler, starting from the concept of 90° hybrid, that can operate in two frequency bands. Large power division ratio is achieved in the dual band by enhancing the length of the conventional 0 dB coupler (cross-coupler). The proposed circuit also features compact size and planar structure. Microstrip cross-coupler operating in the two frequency bands (1.28 to 1.695 GHz and 2.71 to 3.305 GHz) with corresssponding minimum return loss frequencies of 1.6 GHz and 2.9 GHz is designed through circuit theory approach and optimized using Ansoft HFSS software. The power division ratios obtained at 1.6 GHz and 2.9 GHz are 16.38 dB and 15.79 db respectively. In integrated circuit, considering h ≤ 0.01λ (h=substrate height) so that step discontinuity reactance becomes negligible, no compensation technique is required. The same quadrature phase relationship is obtained between the input and coupled signals at the two operating frequencies.

Original languageEnglish
Title of host publicationInternational Conference on Communication and Electronics System Design
EditorsM. Salim, K. K. Sharma, V. Janyan
Place of PublicationBellingham, Washington
Pages876009-1-876009-8
Number of pages8
Volume8760
DOIs
Publication statusPublished - 2013
Externally publishedYes
EventInternational Conference on Communication and Electronics System Design, ICCESD 2013 - Jaipur, India
Duration: 28 Jan 201330 Jan 2013

Other

OtherInternational Conference on Communication and Electronics System Design, ICCESD 2013
CountryIndia
CityJaipur
Period28/01/1330/01/13

Keywords

  • 0 dB coupler
  • Butler matrix
  • Dual band
  • Multi-beam antenna arrays
  • Quadrature hybrid (3 dB directional coupler)

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