A Study of Velocity-Tapered Slow Wave Structures for High-Efficiency Backward Wave Oscillators

Chipengo, Ushemadzoro; Nahar, Niru K.; Volakis, John L.

doi:10.1109/ted.2017.2769676

Cited by 1 publication

(2 citation statements)

References 21 publications

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“…Comparison of field patterns with analytical results. (a) Field pattern of TM 01 mode for SCSWS with kzo = π/2, (b) field pattern of TM 01 mode for SCSWS with kzo = π/2 (c) field pattern of TM 01 mode for SCCSWS with kzo = π/2…”

Section: Em Field Patterns For Axial Tm Modes and Its Comparison Withmentioning

confidence: 99%

“…Experimental demonstration of multisection inhomogeneous SWSs have been reported for achieving higher efficiency while PIC simulation predicts 70% efficiencies at S band . Researchers report the enhancement of efficiency by employing velocity‐tapered SWSs . A novel SWS based on metamaterials is presented for designing BWO with ease of fabrication and miniaturization …”

Section: Introductionmentioning

confidence: 99%

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Dispersion characteristics and electromagnetic properties of semicircularly corrugated slow‐wave structure for backward‐wave oscillators

Al‐Amin

Amin

Sagor

2018

Int J Numerical Modelling

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The dispersion relation of semicircularly corrugated slow‐wave structure (SCCSWS) is calculated and verified numerically using synthetic technique. The metallic periodic structure resonates at discrete frequencies when both ends of it are shorted and excited properly. From the discrete frequencies of the axial modes of the resonant cavity, continuous dispersion curve for both the fundamental and the higher order passband modes (TM01‐TM03) are generated. The generated dispersion curve is compared with the analytical results, which agree excellently with a maximum deviation of 1.33% for TM01 mode, 1.94% for TM02 mode, and 1.30% for TM03 mode. The electromagnetic field patterns of SCCSWS in both radial and axial direction are also calculated and compared with analytical field patterns. Comparative results validate both the obtained dispersion relation and field patterns of SCCSWS, which can be employed as viable alternative of the existing slow‐wave structure (SWS) in high‐power microwave devices.

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Section: Em Field Patterns For Axial Tm Modes and Its Comparison Withmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dispersion characteristics and electromagnetic properties of semicircularly corrugated slow‐wave structure for backward‐wave oscillators

Al‐Amin

Amin

Sagor

2018

Int J Numerical Modelling

View full text Add to dashboard Cite

show abstract

A Study of Velocity-Tapered Slow Wave Structures for High-Efficiency Backward Wave Oscillators

Cited by 1 publication

References 21 publications

Dispersion characteristics and electromagnetic properties of semicircularly corrugated slow‐wave structure for backward‐wave oscillators

Dispersion characteristics and electromagnetic properties of semicircularly corrugated slow‐wave structure for backward‐wave oscillators

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