Design of Broad-Band Dielectric Waveguide 3-dB Couplers

Pertti Ikäläinen, George Matthaei

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Abstract

It is shown how 3-dB couplers with bandwidths on the order of 30 percent can be designed by appropriately taking advantage of the dispersion and the frequency dependence of coupling per unit length between two dielectic waveguides with asymmetrical cross sections.
Theoretical methods for computing frequency responses of such couplers are discussed. It is shown how the phase response can be simply compensated to give approximately symmetrical-coupler-type or "magic tee" coupler-type phase-difference responses over comparable bandwidths.
Experimental results confirming theoretical calculations are presented.
Original languageEnglish
Pages (from-to)621-628
JournalIEEE Transactions on Microwave Theory and Techniques
Volume35
Issue number7
DOIs
Publication statusPublished - 1987
MoE publication typeA1 Journal article-refereed

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Dielectric waveguides
dielectric waveguides
couplers
broadband
Bandwidth
magic tees
Frequency response
Waveguides
bandwidth
phase response
frequency response
waveguides
cross sections

Cite this

Ikäläinen, Pertti ; Matthaei, George. / Design of Broad-Band Dielectric Waveguide 3-dB Couplers. In: IEEE Transactions on Microwave Theory and Techniques. 1987 ; Vol. 35, No. 7. pp. 621-628.
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Design of Broad-Band Dielectric Waveguide 3-dB Couplers. / Ikäläinen, Pertti; Matthaei, George.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 35, No. 7, 1987, p. 621-628.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Design of Broad-Band Dielectric Waveguide 3-dB Couplers

AU - Ikäläinen, Pertti

AU - Matthaei, George

PY - 1987

Y1 - 1987

N2 - It is shown how 3-dB couplers with bandwidths on the order of 30 percent can be designed by appropriately taking advantage of the dispersion and the frequency dependence of coupling per unit length between two dielectic waveguides with asymmetrical cross sections. Theoretical methods for computing frequency responses of such couplers are discussed. It is shown how the phase response can be simply compensated to give approximately symmetrical-coupler-type or "magic tee" coupler-type phase-difference responses over comparable bandwidths. Experimental results confirming theoretical calculations are presented.

AB - It is shown how 3-dB couplers with bandwidths on the order of 30 percent can be designed by appropriately taking advantage of the dispersion and the frequency dependence of coupling per unit length between two dielectic waveguides with asymmetrical cross sections. Theoretical methods for computing frequency responses of such couplers are discussed. It is shown how the phase response can be simply compensated to give approximately symmetrical-coupler-type or "magic tee" coupler-type phase-difference responses over comparable bandwidths. Experimental results confirming theoretical calculations are presented.

U2 - 10.1109/TMTT.1987.1133720

DO - 10.1109/TMTT.1987.1133720

M3 - Article

VL - 35

SP - 621

EP - 628

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

SN - 0018-9480

IS - 7

ER -