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For the purpose of efficacious protection of HF (high frequency)/VHF (very-high frequency) transceivers against LEMP (lightning electromagnetic pulses) and NEMP (nuclear electromagnetic pulses), antenna feed protection modules should fulfill the requirements of low onset voltage, nanosecond-level response time and large current conduction capability. We proposed in this paper the design and verification...
Present RF front-end limiters were widely used to prevent physical damage to low noise amplifier or mixer circuits in the environment of HIRF and EMP radiation. As the limiters were generally designed on the base of passive PIN diode circuits, their output limited power was greater than 10 dBm, which could result in saturation of LNA and degradation of the receiver channel. In this paper, the design...
The effects of EMP of different types and different energy will lead to different levels of damage in limiters employed in RF and microwave receivers. After damaged, the limiters still preserve some original functions and thus the systems they served will suffer performance degradation instead of invalidation. In this paper we made research on the damage threshold and damage effects of typical limiters,...
Limiters are a kind of important module to protect the front end from physical damage in the case of RF/microwave receivers are exposed to EMP radiation. However, typical PIN limiters employed in most RF receivers are faced with the conflict between power capability and limiting level. To solve the problem, we proposed in this paper a new design of limiter based on multistage PIN diodes and Shcottky...
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