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金属化、封闭技术和表面静磁场模式吸收铁氧体设计的最新进展,使石榴石和尖晶石铁氧体在微波管中得到应用,并在S波段注入式正交场放大器中获得宽带(接近倍频程)单向吸收。在铁氧体上成功地进行了高频溅射金属化,以银铜共晶焊料焊接到铜膨胀基座上,热膨胀匹配介质已热压于该铁氧体,从而,把铁氧体成功地置入正交场放大器中。尖晶石铁氧体用等离子沉积封闭的介质保护后放入微波管,提高了现有铁氧体的设计参量,例如居里温度,饱和磁化强度和g值的使用范围。本文介绍了匹配介质的特性,溅射金属化和等离子封闭技术的最新资料。给出了S波段典型的铁氧体吸收资料,其中包括使用表面静磁模式时,高居里温度的锂铁氧体在螺旋线附近的宽带单向吸收。
Recent advancements in ferrite design for metallization, encapsulation and surface static magnetic field absorption enable the use of garnet and spinel ferrites in microwave tubes and broadband in S-band injection-type orthogonal field amplifiers Octave) one-way absorption. High-frequency sputter metallization was successfully performed on the ferrite, soldered to a copper expansion base with silver-copper eutectic solder, and the thermal expansion matching medium had been hot-pressed against the ferrite so that the ferrite was successfully Into the orthogonal field amplifier. Spinel ferrites are protected by plasma-deposited enclosed media and placed in microwave tubes to increase the design parameters of existing ferrites such as the Curie temperature, saturation magnetization and g-value range. This article presents the latest information on the characteristics of matching media, sputter metallization, and plasma confinement techniques. A typical S-band ferrite absorption data is given, including a broadband unidirectional absorption of high Curie temperature lithium ferrite near the helix using surface-magnetostatic mode.