NDLI: Planar waveguide hybrids for very high power RF

Content Provider	IEEE Xplore Digital Library
Author	Nantista, C.D. Fowkes, W.R. Kroll, N.M. Tantawi, S.G.
Copyright Year	1999
Description	Author affiliation: Linear Accel. Center, Stanford Univ., CA, USA (Nantista, C.D.)
Abstract	Two basic designs have been developed for waveguide hybrids, or 3-dB couplers, capable of handling hundreds of megawatts at X-band. Coupling is provided by one or two connecting waveguides with h-plane junctions and matching elements. In the former case, the connecting waveguide supports two modes. Small apertures and field-enhancing e-bends are avoided to reduce the risk of RF breakdown. The h-plane symmetry also allows the use of over-moded rectangular waveguide in which the height has been increased to reduce field amplitudes without affecting the scattering matrix. The theory and designs are presented, along with the results of prototype tests of functionality and power-handling capability. Such a device is integral to the RF pulse compression or power distribution system of the Next Linear Collider (NLC) for combining, splitting, and directing power. This work was motivated by the observation of RF breakdown at power levels above 200 MW in conventional and modified magic-T's.
Starting Page	1432
Ending Page	1434
File Size	310678
Page Count	3
File Format	PDF
ISBN	0780355733
DOI	10.1109/PAC.1999.795572
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-03-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Planar waveguides Radio frequency Joining processes Waveguide junctions Electric breakdown Couplers Apertures Rectangular waveguides Scattering Transmission line matrix methods
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Multimode Analysis of Rectangular Waveguide Transitions

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Planar waveguide hybrids for very high power RF

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