Permanent Magnets in Traveling-Wave Tubes (TWT)
Traveling-Wave Tubes (TWTs) are critical components in broadband microwave devices, fulfilling a multitude of roles. From acting as low-noise RF amplifiers in microwave receivers to being utilized in broadband communication links and coaxial cables, TWTs ensure reliable amplification. Given their long lifespan, TWTs are commonly chosen for output tubes in communication satellites and various radar systems.
Permanent magnets play an essential role in TWTs by aiding in the transmission and modulation of electron beams, affecting the amplification and modulation processes of microwave signals.
To meet TWTs' specific requirements of stability, magnetic performance, and high-temperature resistance, SmCo magnets and AlNiCo magnets are commonly preferred.
In TWTs, the magnet shapes frequently used are ring magnets, rod magnets, and arc magnets.
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