A high-efficiency 59- to 64-GHz TWT for intersatellite communications

Wilson, Jeffrey D.; Ramins, P.; Force, Dale A.; Limburg, H.C.; Tammaru, I.

doi:10.1109/iedm.1991.235402

Cited by 5 publications

(4 citation statements)

References 1 publication

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“…The parameters of the TWT are shown in Table 1 [7]. ased on these parameters, the model of the millimeter wave TWT is established.…”

Section: Simulation and Resultsmentioning

confidence: 99%

Simulation of Beam-Wave Interaction for Millimeter Wave Coupled-Cavity Traveling Wave Tube Using PIC

Shanxil

et al. 2007

2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications

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A method of particle-in-cell (PIC) has been introduced to simulate beam-wave interaction of millimeter wave coupled-cavity traveling wave tube (TWT). The principle of PIC was analyzed theoretically. Both the move track of particles of electron beam and the change of electric field were simulated before and after beam-wave interaction with our self-designed PIC software. The simulation results show that dynamic beam-wave interaction of millimeter wave TWT can be expressed accurately using PIC, which may provide guidance for the research of beam-wave interaction of TWT.

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“…The parameters of the TWT are shown in Table 1 [7]. ased on these parameters, the model of the millimeter wave TWT is established.…”

Section: Simulation and Resultsmentioning

confidence: 99%

Simulation of Beam-Wave Interaction for Millimeter Wave Coupled-Cavity Traveling Wave Tube Using PIC

Shanxil

et al. 2007

2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications

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“…The typical operating parameters for the ladder CCTWT are summarized in Table 2. Compared with the Hughes-type V-band CCTWT, [16] our designed CCTWT has the performance that is more competitive in power capability. And more importantly, the ladder-type CCTWT can be easily fabricated and assembled with extremely tight tolerances.…”

Section: Particle-in-cell Simulationsmentioning

confidence: 99%

“…For example, the Hughes-type coupled cavity has been used to develop a 75 W 59-64 GHz TWT for inter-satellite communications. [16] However, when the operating frequency increases to be within the shorter millimeter-wave band, the Hughes-type coupled-cavity circuit will be expensive and difficult to fabricate by the conventional machining because of the extremely small manufacturing tolerances. In order to solve this problem, the ladder-type coupled cavity was proposed by James and Kolda.…”

Section: Introductionmentioning

confidence: 99%

Design of a re-entrant double-staggered ladder circuit for V-band coupled-cavity traveling-wave tubes

Yang¹,

Xu²,

Lai³

et al. 2012

Chinese Phys. B

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The re-entrant double-staggered ladder slow-wave structure is employed in a high-power V-band coupled-cavity traveling-wave tube. This structure has a wide bandwidth, a moderate interaction impedance, and excellent thermal dissipation properties, as well as easy fabrication. A well-matched waveguide coupler is proposed for the structure. Combining the design of attenuators, a full-scale three-dimensional circuit model for the V-band coupled-cavity traveling-wave tube is constructed. The electromagnetic characteristics and the beam—wave interaction of this structure are investigated. The beam current is set to be 100 mA, and the cathode voltage is tuned from 16.8 kV to 15.8 kV. The calculation results show that this tube can produce a saturated average output power over 100 W with an instantaneous bandwidth greater than 1.25 GHz in the frequency ranging from 58 GHz to 62 GHz. The corresponding gain and electronic efficiency can reach over 32 dB and 6.5%, respectively.

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“…Consequently, there is considerable interest in the study and development of V-band coupled-cavity TWT. For example, Hughestype coupled-cavity has been used to develop a 75 Watts, 59-64 GHz TWT [10]. With computer simulation, we also designed a 100 Watts, 58-62 GHz TWT by using the double-staggered ladder coupled-cavity structure [11].…”

Section: Introductionmentioning

confidence: 99%

Design of a v-Band High-Power Sheet-Beam Coupled-Cavity Traveling-Wave Tube

Yang¹,

Xu²,

Wei³

et al. 2012

PIER

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Abstract-The design and analysis of a high-power wideband sheetbeam coupled-cavity traveling-wave tube operating at V-band is presented. The interaction circuit employs three-slot doubly periodic staggered-ladder coupled-cavity slow-wave structure, and a 5 : 1 aspectratio sheet electron beam is used to interact with the circuit. Combined with design of the well-matched input and output couplers, a 3-D particle-in-cell model of the sheet-beam coupled-cavity traveling-wave tube is constructed. The electromagnetic characteristics and the beamwave interaction of the tube are investigated. From our calculations, this tube can produce saturated output power over 630 Watts ranging from 58 GHz to 64 GHz when the cathode voltage and beam current are set to 13.2 kV and 300 mA, respectively. The corresponding saturated gain and electron efficiency can reach over 32.5 dB and 15.9%. Compared with the circular beam devices, the designed sheetbeam TWT has absolute advantage in power capability, and also it is more competitive in bandwidth and electron efficiency.

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A high-efficiency 59- to 64-GHz TWT for intersatellite communications

Cited by 5 publications

References 1 publication

Simulation of Beam-Wave Interaction for Millimeter Wave Coupled-Cavity Traveling Wave Tube Using PIC

Simulation of Beam-Wave Interaction for Millimeter Wave Coupled-Cavity Traveling Wave Tube Using PIC

Design of a re-entrant double-staggered ladder circuit for V-band coupled-cavity traveling-wave tubes

Design of a v-Band High-Power Sheet-Beam Coupled-Cavity Traveling-Wave Tube

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