Determination of the resonant frequencies in a complex cavity using the scattering matrix formulation

Neilson, Jeffrey; Latham, P.E.; Caplan, M.; Lawson, W.

doi:10.1109/22.31074

Cited by 128 publications

(51 citation statements)

References 9 publications

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“…Researchers at the University of Illinois have published extensively in this area [15][16][17][18]. Neilson et al describe a method for computing the resonance frequencies in a cavity consisting of a series of waveguide sections [19]. DoD has conducted extensive classified research on predicting the RCS of engine inlets and the effect of canopies; this research is slowly being declassified or downgraded [20][21][22][23].…”

Section: This Project Is Supported By the Electromagnetic Code Consormentioning

confidence: 99%

Characterization of the Effects of Cavities and Canopies on Radar Target Signatures

Goldman¹

2000

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I conducted a literature search on electromagnetic models for cavities and canopies and their effect on radar target signatures. This report is a simple analysis of cavities as well as a review of electromagnetic codes that simulate the radar backscatter of targets with cavities. I also review imaging and parametric techniques to describe targets with cavities and canopies. Finally, recommendations are offered for enhancing signature generation for hardware-in-the-loop (HWIL) and software-in-the-loop (SIL).

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Section: This Project Is Supported By the Electromagnetic Code Consormentioning

confidence: 99%

Characterization of the Effects of Cavities and Canopies on Radar Target Signatures

Goldman¹

2000

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“…Fortunately the rectangular corrugation circular waveguide is one of these. The details of calculating and cascading scattering matrices of a circular waveguide with radial steps can be found in [20][21][22][23].…”

Section: Numerical Simulationsmentioning

confidence: 99%

Bandwidth Study of the Microwave Reflectors with Rectangular Corrugations

Zhang

Donaldson

et al. 2016

J Infrared Milli Terahz Waves

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The mode-selective microwave reflector with periodic rectangular corrugations in the inner surface of a circular metallic waveguide is studied in this paper. The relations between the bandwidth and reflection coefficient for different numbers of corrugation sections were studied through a global optimization method. Two types of reflectors were investigated. One does not consider the phase response and the other does. Both types of broadband reflectors operating at W-band were machined and measured to verify the numerical simulations.

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“…The design of the microwave circuit was performed using the COAX code. 18 We started with a geometric description of a given cavity along with the adjacent drift areas. The code then considers each constant cavity section of the input geometry as a separate region.…”

Section: B Microwave Circuit Design Proceduresmentioning

confidence: 99%

Design of a high-power, high-gain, 2nd harmonic, 22.848 GHz gyroklystron

2013

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In this paper we consider the design of a four-cavity, high-gain K-band gyroklystron experiment for high gradient structure testing. The frequency doubling gyroklystron utilizes a beam voltage of 500 kV and a beam current of 200 A from a magnetron injection gun (MIG) originally designed for a lower-frequency device. The microwave circuit features input and gain cavities in the circular TE011 mode and penultimate and output cavities that operate at the second harmonic in the TE021 mode. We investigate the MIG performance and study the behavior of the circuit for different values of perpendicular to parallel velocity ratio (α = V⊥ / Vz). This microwave tube is expected to be able to produce at least 20 MW of power in 1μs pulses at a repetition rate of at least 120 Hz. A maximum efficiency of 26% and a large signal gain of 58 dB under zero-drive stable conditions were simulated for a velocity ratio equal to 1.35

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Determination of the resonant frequencies in a complex cavity using the scattering matrix formulation

Cited by 128 publications

References 9 publications

Characterization of the Effects of Cavities and Canopies on Radar Target Signatures

Characterization of the Effects of Cavities and Canopies on Radar Target Signatures

Bandwidth Study of the Microwave Reflectors with Rectangular Corrugations

Design of a high-power, high-gain, 2nd harmonic, 22.848 GHz gyroklystron

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