Patent
Mode coupler for monopulse antennas and the like
Reads0
Chats0
TLDR
In this paper, a coupler for extracting energy in the TE 21 mode from a circular waveguide propagating energy in both the TE 11 and TE 21 modes is proposed, characterized by an annular iris on the inner circumference of the waveguide and a longitudinally stepped transition portion of a waveguide.Abstract:
A coupler for extracting energy in the TE 21 mode from a circular waveguide propagating energy in both the TE 11 and TE 21 modes, characterized in that an annular iris on the inner circumference of the waveguide and a longitudinally stepped transition portion of the waveguide define therebetween a TE 21 mode resonant cavity which is coupled via a narrow axially extending rectangular slot contained in the wall portion of the waveguide which defines the cavity. At least one external resonant chamber may be provided on the waveguide through which the TE 21 mode energy is extracted and transmitted to a detector thereof via the slot, which chamber cooperates with the resonant cavity to define a multiple resonant filter for improving the matching to the TE 21 mode while reducing the perturbation to the TE 11 mode.read more
Citations
More filters
Patent
Multiple phase center feedhorn for reflector antenna
TL;DR: In this article, a feedhorn driving method and apparatus allows the establishment of multiple phase centers using only a single multimode feedhorn, at least two higher-order modes are extracted from the feedhorn and weighted in amplitude and phase.
Patent
Wideband waveguide turnstile junction based microwave coupler and monopulse tracking feed system
TL;DR: In this article, a waveguide turnstile junction based coupler was proposed for selectively coupling the higher order modes of propagating microwave energy while allowing the dominant mode of said microwave energy to propagate unperturbed.
Patent
Method for collecting a desired blood component and performing a photopheresis treatment
TL;DR: An improved method for separating whole blood into components and collecting a desired blood component is presented in this article, which allows a desired component to be subjected to centrifugal forces within a separator for prolonged periods of time, yielding a cleaner cut and higher yield of the desired component.
Patent
Device for excitation of wave ein round waveguide
Danilov Igor Yurevich,Romanov Anatolij Gennadevich,Choni Yurij Ivanovich,Lavrushev Vladimir Nikiforovich,Valiullina Ajgul Ildarovna,Krylov Yurij Valerevich +5 more
TL;DR: In this article, a power divider is made in the form of a coaxial resonator enclosing the round waveguide, and the input of the power dividers is made by a piece of a rectangular waveguide connected to the resonator through a coupling element.
Patent
Compact tracking coupler
TL;DR: In this paper, a compact tracking coupler includes a plurality of ridged waveguides arranged circumferentially around a circular waveguide, where long sides of the ridges extend circum-erentially and short sides extend radially relative to the circle.
References
More filters
Patent
Wide-band microwave signal coupler
Younho Choung,Kenneth R. Goudey +1 more
TL;DR: In this article, a microwave coupler for coupling microwave energy from a first waveguide to a second waveguide disposed side-by-side along a propagation length includes a common coupling means, and specifically, orifices along the propagation length wherein the couplingorifices are sized to promote coupling of a favored field mode of electromagnetic energy according to a Bessel function distribution of energy along the length of the waveguide.
Patent
Directional coupler type te21 mode coupler
Takashi Kadowaki,Kunito Okubo +1 more
TL;DR: In this paper, the authors proposed to eliminate the undesired mode components and then realize the high accuracy detection only for the TE21 mode wave, by providing four rows of the coupling elements symmetrically to the axis of the circular main waveguide and then compounding each output of the corresponding secondary waveguide with magic T and the like.
Patent
Canonical dual mode filter
TL;DR: In this article, a plurality of cascaded waveguide cavities each resonating in first and second independent orthogonal modes is disclosed, and the cavities may be either square and/or circular in the TE 101 or TE 111 modes, respectively.
Patent
Rectangular to elliptical waveguide connection
TL;DR: A waveguide connection formed between a rectangular waveguide and an elliptical waveguide (12) having a cutoff frequency and impedance different from those of the rectangular waveguides (11,12) comprises an inhomogeneous stepped transformer (10) having multiple sections (31,32,33) all having inside dimensions small enough to cutoff the first excitable higher order mode in a pre-selected frequency band as discussed by the authors.