High efficiency E-band MPM for communications applications

Kowalczyk, Richard; Zubyk, Andrew; Meadows, Clark; Schoemehl, Tom; True, R.B.; Martin, Mike; Kirshner, M.F.; Armstrong, C.M.

doi:10.1109/ivec.2016.7561861

Cited by 25 publications

(3 citation statements)

References 6 publications

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“…For high data rate communication, L3 (now Stellant Systems, Torrance, CA, USA), THALES, Vélizy-Villacoublay, France, and BVERI, Beijing, China, have reported TWTs or microwave power module (MPM) amplifiers with operating frequencies greater than 70 GHz, and up to 340 GHz [ 61 ], [ 62 ], [ 63 ], [ 64 ], [ 65 ]. These devices operate CW providing high power for longer distance transmission; wideband with high linearity for high data rate, high-quality communication, and high efficiency for base station use with reduced energy consumption.…”

Section: Highlighted Applicationsmentioning

confidence: 99%

Frontiers in the Application of RF Vacuum Electronics

Armstrong

Snively

Shumail

et al. 2023

IEEE Trans. Electron Devices

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The application of radio frequency (RF) vacuum electronics for the betterment of the human condition began soon after the invention of the first vacuum tubes in the 1920s and has not stopped since. Today, microwave vacuum devices are powering important applications in health treatment, material and biological science, wireless communication-terrestrial and space, Earth environment remote sensing, and the promise of safe, reliable, and inexhaustible energy. This article highlights some of the exciting application frontiers of vacuum electronics.

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Section: Highlighted Applicationsmentioning

confidence: 99%

Frontiers in the Application of RF Vacuum Electronics

Armstrong

Snively

Shumail

et al. 2023

IEEE Trans. Electron Devices

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“…A folded waveguide E-band TWT was reported with more than 40 W output power and 38 dB gain [10]. A MPM (microwave power module) module including a 81 -86 GHz serpentine TWT with 200 W output power is reported in [14].…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of E-Band Traveling Wave Tube for High Data Rate Wireless Links

Paoloni

Basu

Narasimhan

et al. 2023

IEEE Trans. Electron Devices

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E-band (71 -76 GHz and 81 -86 GHz) is widely used for wireless point to point links with a few Gigabit/second data rate. E-band front-ends are powered by solid state amplifiers with about 1 W output power per module. This level of output power limits range and spectral efficiency in rain condition and has to be compensated by high gain antennas or backup low frequency links with reduced capacity. The availability of tens of Watts of transmission power would allow higher spectral efficiency and long range, and the use of lower gain antennas for multibeam and area coverage.Millimeter wave Traveling Wave Tubes (TWTs) are gaining interest due to their higher power, more than one order of magnitude, in comparison to solid state devices. Helix TWTs, typically built at microwaves, are very arduous to fabricate due to the extremely small diameter of an helix at E-band.This paper reports the design and fabrication of the first ever Eband TWT based on a full metal slow wave structure, the double corrugated waveguide. The TWT is designed to provide about 70 W power and more than 35 dB gain in the 71 -76 GHz band. A test TWT using a single section interaction structure is in the final assembly phase as proof of concept with about 2 W output power. The E-band TWT performance will open new perspectives in the availability of long range wireless links with multi-Gb/s data rate needed for enabling 5G and 6G new networks.

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“…L-3 Electron Devices division (CA, USA) developed a CW E-band microwave power module (MPM) to cover 81-86 GHz for communication applications. The power amplifier in the MPM is a folded waveguide (FWG) TWT, capable of 80 W saturated output power at 20.8 kV, 220 mA [9]. BVERI developed an E-band TWT that can produce more than 75 W continuous wave saturated output power over the range of 81-86 GHz with a voltage of 16.3 kV and a current of 105 mA [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Miniaturized E-Band Cosine-Vane Folded Waveguide Traveling-Wave Tube for Wireless Communication

Ma¹,

Cai²,

Feng³

2021

Electronics

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To realize the miniaturization of E-band traveling-wave tubes (TWTs), the size analysis and optimization design were carried out based on an improved cosine-vane folded waveguide (CV-FWG) slow-wave structure (SWS) that operates in a low voltage. In addition, a novel miniaturized T-shaped coupler was proposed to achieve a good voltage standing wave rate (VSWR) in a broad bandwidth. The coupler length was reduced by as much as 77% relative to an original design. With higher coupling impedance, the radius and length of the shortened SWS were optimized as 1.3 mm and 50 mm, respectively. Using microwave tube simulator suit (MTSS) and CST particle studio (PS), 3D beam–wave simulations at 9400 V, 20 mA predicted a gain of 20 dB and a saturated output power of 9 W. The simulation results for CV-FWG TWTs were compared with conventional FWG TWTs from 81 GHz to 86 GHz, showing significant performance advantages with excellent flatness for high-rate wireless communication in the future. The CV-FWG SWS circuit will be fabricated by 3D printing, and this work is underway.

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High efficiency E-band MPM for communications applications

Cited by 25 publications

References 6 publications

Frontiers in the Application of RF Vacuum Electronics

Frontiers in the Application of RF Vacuum Electronics

Design and Fabrication of E-Band Traveling Wave Tube for High Data Rate Wireless Links

Investigation of a Miniaturized E-Band Cosine-Vane Folded Waveguide Traveling-Wave Tube for Wireless Communication

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