A Compact Extremely High Frequency MPM Power Amplifier

Armstrong, C.M.; Kowalczyk, Richard; Zubyk, Andrew; Berg, Kevin; Meadows, Clark; Chan, Danny; Schoemehl, T.; Duggal, R.; Hinch, Nora; True, R.B.; Tobin, R. M.; Sweeney, Michael A.; Weatherford, Brandon

doi:10.1109/ted.2018.2808327

Cited by 35 publications

(8 citation statements)

References 10 publications

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“…A FWG circuit realized by utilizing deep reactive ion etching (DRIE) and copper plating (Figure 29(a)) was used in a 233 GHz TWT (Figure 29 Similar performance are reported for a 231.5-235 GHz FWG TWT (Figure 30(a)) providing a peak output power of 32 W (Figure 30(b)) [26]. The TWT was designed to be integrated into an (Microwave Power Module) MPM for VISAR applications [14].…”

Section: Folded Waveguide Twt Above 220 Ghzmentioning

confidence: 79%

“…The small size and light weight have facilitated numerous applications including drone based systems. The development of the approach has moved from the 2-18 GHz microwave region to the upper millimeter wave region up to G-band (230 GHz) [26]. Table 2 below displays the performance characteristics of most relevant MMPMs.…”

Section: Physical Mechanisms Of Twt Operationmentioning

confidence: 99%

See 1 more Smart Citation

Millimeter wave traveling wave tubes for the 21st Century

Paoloni

Gamzina

Letizia

et al. 2020

Journal of Electromagnetic Waves and Applications

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Section: Folded Waveguide Twt Above 220 Ghzmentioning

confidence: 79%

Section: Physical Mechanisms Of Twt Operationmentioning

confidence: 99%

Millimeter wave traveling wave tubes for the 21st Century

Paoloni

Gamzina

Letizia

et al. 2020

Journal of Electromagnetic Waves and Applications

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“…Research on TWT has increased considering its ability to generate high power at millimeter waves, which are useful in multiple applications [3][4][5][6][7][8][9]. Advantages of TWTs include moderate beam voltage, moderate structure period to wavelength ratio, high beam power to radiated power transformation efficiency [10], long lifetime [11], and reliability and robustness against high thermal stresses and ionizing radiation typical of the space environment in most space and airborne applications [12].…”

Section: Introductionmentioning

confidence: 99%

Wide Band Interaction Impedance and Mode Excitation in Glide Symmetric Double Corrugated Waveguides for mm-wave TWTs

Méndez¹,

Saavedra-Melo²,

Rajo‐Iglesias³

et al. 2023

Preprint

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Focusing on traveling wave tube (TWT) applications, the interaction impedance between an electron beam and electromagnetic modes in three distinct, but related, corrugated waveguides that operate at millimeter waves is investigated together with the role of glide symmetry. Two waveguide structures have glide symmetry, and the irreducible Brillouin zone is related to half of the period, leading to a wide band linearity, i.e., nondispersive, property of the dispersion diagram. The investigation of the modes with longitudinal electric field that can be excited shows that the bottom-top glide symmetric corrugated waveguide has a wide band interaction impedance, hence it is a good candidate for millimeter wave TWT amplifiers.

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“…From 2012 to 2016, Tucek et al discussed a series of vacuum electronic amplifiers including one 100 mW 670 GHz prototype device driven by a novel solid-state source [12], a compact, microfabricated vacuum electronic amplifier with 39.4 mW of maximum output power from 0.835 THz to 0.875 THz [13], and a 29 mW 1.03 THz vacuum electronic with 20 dB of saturated gain and 5 GHz of instantaneous bandwidth [14]. In 2018, a folded waveguide (FWG) TWT is fabricated by Armstrong et al, with over 300 mW power in 231.5-235 GHz [15]. In 2020, Pan Pan et al proposed a G-band continuous wave TWT.…”

Section: Introductionmentioning

confidence: 99%

Novel Dual Beam Cascaded Schemes for 346 GHz Harmonic-Enhanced TWTs

et al. 2021

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The applications of terahertz (THz) devices in communication, imaging, and plasma diagnostic are limited by the lack of high-power, miniature, and low-cost THz sources. To develop high-power THz source, the high-harmonic traveling wave tube (HHTWT) is introduced, which is based on the theory that electron beam modulated by electromagnetic (EM) waves can generate high harmonic signals. The principal analysis and simulation results prove that amplifying high harmonic signal is a promising method to realize high-power THz source. For further improvement of power and bandwidth, two novel dual-beam schemes for high-power 346 GHz TWTs are proposed. The first TWT is comprised of two cascaded slow wave structures (SWSs), among which one SWS can generate a THz signal by importing a millimeter-wave signal and the other one can amplify THz signal of interest. The simulation results show that the output power exceeds 400 mW from 340 GHz to 348 GHz when the input power is 200 mW from 85 GHz to 87 GHz. The peak power of 1100 mW is predicted at 346 GHz. The second TWT is implemented by connecting a pre-amplification section to the input port of the HHTWT. The power of 600 mW is achieved from 338 GHz to 350 GHz. The 3-dB bandwidth is 16.5 GHz. In brief, two novel schemes have advantages in peak power and bandwidth, respectively. These two dual-beam integrated schemes, constituted respectively by two TWTs, also feature rugged structure, reliable performance, and low costs, and can be considered as promising high-power THz sources.

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A Compact Extremely High Frequency MPM Power Amplifier

Cited by 35 publications

References 10 publications

Millimeter wave traveling wave tubes for the 21st Century

Millimeter wave traveling wave tubes for the 21st Century

Wide Band Interaction Impedance and Mode Excitation in Glide Symmetric Double Corrugated Waveguides for mm-wave TWTs

Novel Dual Beam Cascaded Schemes for 346 GHz Harmonic-Enhanced TWTs

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