Journal ArticleDOI
A Broad-Band Element for Microstrip Bias or Tuning Circuits (Short Papers)
TLDR
In this paper, a half-moon microstrip radial transmission line circuit element with a 180/spl deg/ circular stub or "half-moon" structure, having a reflection coefficient of unity magnitude and phase which varies slowly with frequency is presented.Abstract:
A microstrip radial transmission line circuit element namely a 180/spl deg/ circular stub or "half-moon" structure, having a reflection coefficient of unity magnitude and phase which varies slowly with frequency is presented. Theoretical reflection coefficient data are shown to agree well with experimental microstrip (epsilon/sub r/=2.35, h =250 mu m) data in X band. Applications of the half-moon microstrip element in the design of broad-band bias or tuning networks are discussed.read more
Citations
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Journal ArticleDOI
Quasi-optical slot antenna SIS mixers
Jonas Zmuidzinas,Henry G. LeDuc +1 more
TL;DR: In this paper, a quasi-optical SIS mixer using a twin-slot antenna has been described, which has the advantages of a good beam pattern and a low impedance, and a receiver noise temperature of 420 K (DSB) was measured at 490 GHz.
Journal ArticleDOI
Two-junction tuning circuits for submillimeter SIS mixers
TL;DR: In this article, the authors presented two new tuning circuits for SIS mixers which use a pair of SIS junctions connected by an inductance to tune out the capacitance of superconducting tunnel junctions.
Journal ArticleDOI
Analyzing Lossy Radial-Line Stubs (Short Papers)
TL;DR: In this article, the effects of conductor loss on open-circuited radial-line stubs are analyzed, and new equations for opencircuit radial line stubs, which include the effect of conductance attenuation, are presented.
Journal ArticleDOI
A Spoof Surface Plasmon Transmission Line Loaded with Varactors and Short-Circuit Stubs and Its Application in Wilkinson Power Dividers
Journal ArticleDOI
A new simple and accurate formula for microstrip radial stub
Roberto Sorrentino,Luca Roselli +1 more
TL;DR: In this paper, a closed-form formula for the input impedance of the microstrip radial stub was derived, which combines the simplicity of the radial transmission line approach and the accuracy of the resonant mode expansion technique.
References
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Journal ArticleDOI
Transmission-Line Properties of Parallel Strips Separated by a Dielectric Sheet
TL;DR: In this article, the shape ratio and the effective filling fraction of a sheet of dielectric material are computed in terms of exponential and hyperbolic functions, respectively, for a transmission line made of a symmetrical pair of strip conductors.
Journal ArticleDOI
Microstrip ring resonator and dispersion measurement on microstrip lines
Ingo Wolff,N. Knoppik +1 more
TL;DR: In this paper, a theory is described which takes into account the curvature of the microstrip ring resonator, which is shown to have a large influence on dispersion measurements on microstrip lines with small impedences.
Journal ArticleDOI
360/spl deg/ Varactor Linear Phase Modulator
TL;DR: In this paper, the authors derived the circuit impedance requirements to match the nonlinearity of the varactor reactance-versus-voltage curve to the tangent /spl theta/ curve to obtain 180/spl deg/ linear phase modulation from one diode.
Journal ArticleDOI
Lumped-circuit elements at microwave frequencies
C. S. Aitchison,R. Davies,I. D. Higgins,S. R. Longley,B. H. Newton,J. F. Wells,J. C. Williams +6 more
TL;DR: In this article, a combination of lumped capacitors, inductors, resistors, and gyrators is described for microwave frequencies up to X-band Doppler radar.
Patent
Strip line electrical filter element
TL;DR: In this paper, the authors present an improved version of the StrIP LINE ELECTRICAL FILTER, which simplifies the point of junction to the transmission line, which is referred to as the cutoff point.