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Synopsis
Excerpt from A Helical Wave Guide II<br/><br/>In recent years a great deal of research has been done on an ultra-high frequency amplifier known as the traveling-wave It has been found that this tube possesses the desirable properties of high gain, broad bandwidth, and low noise level. The essential part of the tube is a helical transmission line which is designed to pass an electromagnetic wave with wave length along the guide, and hence phase velocity along the guide, smaller than that of the free-space wave by a factor of about thirteen. An electron beam with a velocity approximately equal to the phase velocity of the electromagnetic wave is shot down the center of the helical guide. The electromagnetic wave and the electron beam interact, and as a result the wave amplitude is magnified....
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A Helical Wave Guide II (Classic Reprint)
Seller: PBShop.store US, Wood Dale, IL, U.S.A.
Seller rating 5 out of 5 stars
HRD. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LX-9780260455581
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A Helical Wave Guide II (Classic Reprint)
Seller: PBShop.store UK, Fairford, GLOS, United Kingdom
Seller rating 5 out of 5 stars
HRD. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LX-9780260455581
Quantity: 15 available