Patent
End-on transmission line-to-waveguide transition
Stan W. Livingston,Jar J. Lee +1 more
TLDR
In this paper, a transmission line-to-waveguide transition that includes a microstrip impedance transformer for matching the impedance of an input transmission line to that of a flared slotline is disclosed.Abstract:
A transmission line-to-waveguide transition that includes a microstrip impedance transformer for matching the impedance of an input transmission line to that of a flared slotline is disclosed. The slotline's width is sufficiently small such that when the transition is inserted into a waveguide the slotline is spaced inward from the waveguide's inner walls. A balun bi-directionally couples the unbalanced signal on the microstrip to a balanced signal on the slotline. The signal propagates along the slotline and is capacitively coupled to the waveguide. A trimmable tuning stub is used to adjust the resonant frequency of a parasitic cavity formed between the transition and the waveguide to increase the transition's effective bandwidth. A tapered dielectric insert is positioned inside the waveguide to decrease its size and to improve the coupling efficiency of the transition.read more
Citations
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Patent
Waveguide to microstrip transition
Abstract: A waveguide to microstrip T-junction includes a microstrip transmission line structure having a ground plane separated from a strip conductor by a dielectric layer, the ground plane defining an aperture; a waveguide channel having a conductive periphery being electrically coupled to the ground plane to provide a waveguide short circuit wall located at the end of the waveguide channel; at least one conducting ridge inside the waveguide channel; and an end of the ridge being electrically coupled with the ground plane.
Patent
Broadband power combining device using antipodal finline structure
TL;DR: In this paper, a broadband power combining device consisting of a wedge-shaped metal carrier, an input antipodal finline structure, one or more active elements, and a corresponding output antenna array is presented.
Patent
Power combiner using tri-plane antennas
Scott Behan,Patrick Courtney +1 more
TL;DR: In this paper, the authors proposed a power combining apparatus consisting of an input, an output, and a plurality of antenna elements arranged in the waveguide structure, wherein each antenna element is configured to transform an electric field direction of an electromagnetic field by substantially 90 degrees rotation about a longitudinal axis of the wave-guide structure.
Patent
Passive coaxial power splitter/combiner
TL;DR: In this paper, a passive coaxial signal power combiner is described, where each antenna element is coupled to one or more of the input ports, a coaxial waveguide section coupled to the guided wave structure, and an output port coupled to each of the antenna elements.
Patent
Bi-directional amplifier module for insertion between microwave transmission channels
Brandon J. Wolfson,Larry T. Lowe +1 more
TL;DR: In this paper, a waveguide bi-directional amplifier module is illuminated by a downstream illumination source and an upstream illumination source coupled to an array having waveguide to microstrip converters that provide for upstream and downstream electrical signals.
References
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Journal Article
A new model for broadband waveguide to microstrip transition design
George E. Ponchak,Alan N. Downey +1 more
TL;DR: In this paper, a new model for the prediction of the resonant frequencies created by antipodal finline waveguide to microstrip transitions is presented, where the transition is modeled as a tapered transmission line in series with an infinite set of coupled resonant circuits.
Patent
Broadband notch antenna
TL;DR: In this article, the authors proposed a dual-chamber antenna with a substrate, an upper planer conducting antenna element disposed on one side of the surface of the substrate and having a first curved edge, and a second curved edge having two curved edges being closely related to one another and spaced apart in close proximity at one point.
Patent
Tapered notch antenna
TL;DR: In this paper, an improved tapered notch antenna configuration is presented, where the ground plane conductors and attendant dielectric substrates diverge in the notch taper region.
Journal ArticleDOI
Analysis of an End Launcher for an X-Band Rectangular Waveguide
TL;DR: In this article, an analysis of an end-launcher type, coaxial-to-rectangular waveguide transition, exciting dominant TE/sub 01/mode in X-band rectangular waveguide is presented.