Planar slow wave structure traveling wave tubes : design, fabrication and experiment / Yubin Gong and Shaomeng Wang.

Format:

Book

Author/Creator:

Gong, Yubin, author.

Wang, Shaomeng, author.

Series:

IOP Series in Electromagnetics and Metamaterials Series

Language:

English

Subjects (All):

Millimeter wave devices.

Terahertz technology.

Traveling-wave tubes.

Physical Description:

1 online resource (188 pages)

Edition:

First edition.

Place of Publication:

Bristol, England : IOP Publishing, [2024]

Summary:

This is a book devoted to the development of planar slow wave structure traveling wave tubes, which are miniature-sized high-power microwave amplifiers suitable for advanced manufacturing techniques and mass productions.

Contents:

Intro

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The traveling wave tube (TWT) is a member of the vacuum electronic device (VED) family, which provides an interaction site for and realizes energy exchange between a high energy direct current (DC) electron beam and a high frequency electromagnetic wave. Specifically, a TWT employs a slow wave structure (SWS) as the beam-wave interaction site, on which the electromagnetic wave can propagate with a phase velocity smaller than the speed of light in free space. By s

Acknoweldgements

Author biographies

Yubin Gong

Shaomeng Wang

Chapter Introduction

1.1 Conventional traveling-wave tubes

1.1.1 Electro-optical systems

1.1.2 Slow-wave systems

1.2 Problems encountered

References

Chapter Planar slow-wave structures

2.1 Periodic planar slow-wave structures

2.1.1 Radial beam traveling-wave tubes

2.1.2 Angular radial meander-line SWS

2.1.3 Modified angular log-period meander-line SWS

2.2 Axial periodic slow-wave structures

2.2.1 Meander strip-line slow-wave structures

2.2.2 Coplanar waveguide SWS

2.2.3 Periodic slot SWS on a metal film

2.2.4 Meander slot-line SWS

References and further reading

Chapter Planar electron optical systems

3.1 Introduction

3.2 Radial planar EOSs

3.2.1 Radial divergent sheet beam EOSs

3.2.2 Radial convergent planar EOSs

3.3 Angular radial planar EOSs

3.3.1 Angular radial electron gun

3.3.2 Radial tunable PCM magnetic focusing system

3.4 Sheet electron beam EOSs

3.4.1 Sheet beam electron gun

3.4.2 PCM focusing system

3.5 Multiple sheet beam EOSs

3.5.1 Multiple angular radial sheet beam EOSs

Chapter Fabrication technologies

4.1 Suspended double-microstrip meander line

4.2 Fabrication of conformal microstrip slow-wave structures.

4.3 Angular log-period meander strip-line SWS

4.4 Quartz-based microstrip angular log-period meander-line SWS

4.5 Attenuator-supported meander strip-line SWS

4.5.1 Fabrication process

4.5.2 Measurement and analysis of surface roughness

4.6 Modified angular log-period folded waveguide SWS

4.7 Terahertz folded waveguide SWS

4.8 Meander slot-line SWS

Chapter Fixtures and assembly

5.1 Angular log-period meander strip-line TWT

5.1.1 Angular radial electron optical system

5.1.2 Slow-wave structure

5.1.3 Radial electron-beam magnetic focusing system

5.1.4 Overall assembly

5.2 Modified angular log-period folded waveguide TWT

5.2.1 Electron gun

5.2.2 Structural design and assembly of the middle section

5.2.3 Other components

5.2.4 Overall TWT assembly

Chapter System tests

6.1 Angular radial log-periodic meander-line traveling-wave tube

6.1.1 Beam flow test

6.1.2 Overall tube test

6.2 Modified angular log-periodic folded waveguide TWT

6.2.1 Magnetic circuit test

6.2.2 Overall tube test

Chapter Future perspectives and discussion

7.1 Future direction

7.1.1 Hybrid dispersion topology

7.1.2 Traveling-standing hybrid wave topology

7.2 Artificial-intelligence-aided design

7.2.1 Forward mapping algorithm

7.2.2 Reverse search algorithm and uniform structure particle-in-cell verification

7.2.3 Rapid gradient dispersion property processing

References.

Notes:

Includes bibliographical references.

Description based on publisher supplied metadata and other sources.

Description based on print version record.

Other Format:

Print version: Gong, Yubin Planar Slow Wave Structure Traveling Wave Tubes

ISBN:

9780750354523

OCLC:

1484074301