Field Theory Design of Rectangular Waveguide Multiple-Slot Narrow-Wall Couplers

Schmiedel, H.; Arndt, F.

doi:10.1109/tmtt.1986.1133442

Cited by 70 publications

(19 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to design a NWSDC with better performance, more slots have to be used, and this means more parameters may be used in the optimization procedure, which will add difficulties to the designing. Heinz Schmiedel and Fritz Arndt have given a solution in [11], where they tandem connect two −8.34 dB directional coupler to get a −3 dB directional coupler. This solution is adopted in this paper.…”

Section: Numerical Resultsmentioning

confidence: 99%

A Compact H-Plane Magic Tee Designed at W Band

Wang¹,

Dou²,

Mei³

2008

PIER B

View full text Add to dashboard Cite

Abstract-Magic tee is a widely used component in microwave systems; the four arms of a conventional magic tee direct at four different directions, which occupy much space and give inconveniences to the assemblage of a system. In this paper, a waveguide narrow-wall slot directional coupler and an E-plane dielectric loaded waveguide phase shifter are used to make up of a magic tee with four arms in the same H-plane. The narrow-wall slot directional coupler is analyzed with mode matching method and optimized with simulated annealing method, and the dielectric loaded waveguide phase shifter is designed with edge based finite element method. Numerical results of the magic tee are presented, which show that the performance of the designed magic tee is good.

show abstract

Section: Numerical Resultsmentioning

confidence: 99%

A Compact H-Plane Magic Tee Designed at W Band

Wang¹,

Dou²,

Mei³

2008

PIER B

View full text Add to dashboard Cite

show abstract

“…Figure 5 shows the Figure 6 shows the reflection parameter of a rectangular waveguide radiating to half-space (with the domain terminated by the absorbing boundary conditions (ABCs) [1]), which is set to be Sommerfeld radiation condition here, then the domain is subdivided into 82,221 tetrahedrons, containing 93,031 edges, r a ϭ 8.4.6, and the CPU time saved is 27.3%. A Ϫ3-dB narrow-wall directional coupler [8] [see Figure 7 (a)] is also computed using the ISSOR-PBCG algorithm with the directional coupler containing seven metal inserts and eight slots (a ϭ 2.54 mm,…”

Section: Numerical Resultsmentioning

confidence: 99%

Improved iterative algorithm for 3D edge FEM analysis of electromagnetic field boundary value problems

Wang

Dou

2006

Int J RF and Microwave Comp Aid Eng

View full text Add to dashboard Cite

“…If the bifurcation of waveguide has a finite thickness, its effects can no longer be neglected [21][22][23]. In the vicinity of the bifurcation, there exist TE m0 -like modes both in the coupling region and in the uniform SIW sections.…”

Section: E Equivalent Circuit Model Of Bifurcation Effectsmentioning

confidence: 99%

Accurate and efficient design technique for wideband substrate integrated waveguide directional couplers

Han

Chen

et al. 2011

Int J RF and Microwave Comp Aid Eng

View full text Add to dashboard Cite

In this article, we present an efficient technique for the accurate design of wideband substrate integrate waveguide directional couplers. By tapering the coupling section, the bandwidth of substrate integrated waveguide (SIW) directional couplers can be enlarged. Two design aspects are involved in this approach. First, the even-mode propagation constant in the tapered coupling section is accurately extracted with the help of a numerical thru-reflect-line calibration technique. Then, it is fitted into the model of a uniform dielectric-filled rectangular waveguide and thereafter extrapolated to the operation range of the odd mode. Second, equivalent circuit models of the waveguide bifurcation effects are also presented together with parametric values. Based on the results of extraction, a 90 3-dB directional coupler is developed to validate the proposed design approach. To achieve the reverse phasing at two output ports, the prototyped 90 3-dB directional coupler is subsequently integrated with a novel broadband fixed phase shifter developed with the SIW technology, of which a systematic synthesis procedure has been proposed in this article. Measured performance of both 90 and 180 3-dB couplers confirms the accuracy of our proposed design approach. This kind of wide-band directional coupler can find applications in wideband power dividing/combining circuits within a single-layer platform.

show abstract

Field Theory Design of Rectangular Waveguide Multiple-Slot Narrow-Wall Couplers

Cited by 70 publications

References 12 publications

A Compact H-Plane Magic Tee Designed at W Band

A Compact H-Plane Magic Tee Designed at W Band

Improved iterative algorithm for 3D edge FEM analysis of electromagnetic field boundary value problems

Accurate and efficient design technique for wideband substrate integrated waveguide directional couplers

Contact Info

Product

Resources

About