Abstract.
The
paper presents the results of a three-dimensional electromagnetic modeling of
two connected through the gap coupling stepwise-inhomogeneous cavities,
operating at double frequencies (f0 and 2f0) and an estimation of the
possibility of their application in MMLK with an improved complex of output
parameters. This cavity was designed for application in low-voltage
dual-frequency klystrons. Such a klystron can be used in on-board transmitters
of radio systems for various purposes (radar, transponders, navigation,
communications). The parameters of the coupled resonator system were calculated
using the Ansoft HFSS program. The distribution of the electric field on the
working modes of oscillations is investigated. The main electrodinamical and
electronic parameters of various modes are investigated (characteristic wave
impedance ρ=R/Q, coupling coefficient Ģ, relative active electron conductance
Ge/G0, quality Q and accelerating potential U0 = 3 kV). The characteristic
resistance in different transit channels is calculated. Found operating
conditions, which provide effective interaction of multi-electron beam with a
high-frequency electromagnetic field. The possibility of further enhancing the
complex of energy and mass-dimensional parameters of low voltage miniature
multi-beam Ku-band klystrons is shown. This cavity will increase the efficiency
of microwave power devices. With further investigation of coupled stepwise
inhomogeneous resonators, attention must be paid to the search for ways to
eliminate the uneven distribution of the electric field and the characteristic
resistance in the interaction region.
Key words:
low voltage miniature multi-beam klystrons, connected
step-inhomogeneous resonators, electronic efficiency, anti-phase and in-phase
modes, Ku-band.
References
1.
Gelvich, E.A, Jariy E.V., Zakurdaev
A.D., Pugnin V.I. Multi-beam klystrons. Development trends. Vakuumnaya SVCH
elektronika. Sbornik obzorov [Vacuum microwave electronics. Collection of
reviews], Nizhniy Novgorod, 2002, P. 54 (In Russian)
2. Bandyopadhyay
A.K., Pal D., Saini A., Kant D., Saha S., Joshi L.M. Design of a Ku band miniature multiple beam klystron. AIP
Conference Proceedings. Vol. 1715 (1). 2016.
3. Tsarev V.A., Chigurov I.O., Shalaev P.D.
Amplification of output parameters of a multipath amplifying pulsed small-sized
klystron of the Ku-range of wavelengths. Radiotekhnika - Radioengineering,
2015, No. 7. PP. 41 - 44. (In Russian)
4.
Bystrov R.P., Potapov A.A., Functional
devices and element base of radar systems. Radioelektronika. Nanosistemy,
Informatsionnye tekhnologii - Radio Electronics. Nanosystems. Information
technology, 2009. Vol. 1. No. 1-2. PP. 43-58. (In Russian)
5. Tsarev
V.A., Senchurov V.A. The study of various methods for tuning multichannel
single-gap cavity at multiple Zhurnal Radioelektroniki - Journal of Radio
Electronics. 2011. No. 9. Available at
http://jre.cplire.ru/jre/sep11/5/text.html
(in Russian)
6. Korolev
A.N., Lyamzin V.M., Mamontov A.V., Simonov K.G. SVCH - pripor klistronnogo
tipa (varianty) [Klystron type microwave device (variants)]. Patent RF, no.
2390870, 2009 (In Russian)
7.
ANSYS HFSS
[online]. ANSYS - Simulation Driven Product Development (Date of access 07.06.18) Availabel at:
http://www.ansys.com/products/electronics/ansys-hfss
8. T.
Wessel Berg, A General Theory of Klystrons with Arbitrary Extended Interaction
Fields. Technical Report, 1957, No. 376