Frequency selective limiter having reduced spike leakage
AssigneeMetamagnetics, Inc.
InventorsScott M. GILLETTE, Mahima SHUKLA
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Abstract
Described is a frequency selective limiter (FSL) module comprising a cascade of an FSL and a functional limiter (e.g. a conventional semiconductor limiter comprising a PIN diode) with steady state limiting and power threshold values selected such the FSL module provides suppression of a spike leakage power and while still enabling frequency selective limiting.
Claims20
A frequency selective limiter (FSL) module comprising:
- an RF ferrite-based FSL;
- and
- an RF functional limiter coupled to an output of the ferrite-based FSL, the functional limiter having a power threshold characteristic which is higher than the steady-state limited output power characteristic of the FSL.
A frequency selective limiter (FSL) module having a large limiting dynamic range, the FSL module comprising:
- at least one polycrystalline ferrite FSL stage;
- at least one single crystal ferrite FSL stage cascade coupled to polycrystalline ferrite FSL stage;
- and
- a functional limiter coupled after an output of the single crystal ferrite FSL, the functional limiter having a power threshold between the input power characteristic of the polycrystalline ferrite FSL and a steady-state limited output power of the polycrystalline ferrite FSL.
A low-cost high-power handling, high dynamic range frequency selective limiter (FSL) module comprising:
- a polycrystalline ferrite FSL cascade coupled to a semiconductor functional limiter, wherein the semiconductor functional limiter is provided having a power threshold below a steady-state limited output power characteristic of the polycrystalline ferrite FSL and a maximum input power of the semiconductor functional limiter is above a steady-state limited output power characteristic of the polycrystalline ferrite FSL.
A hybrid ferrite-based frequency selective limiter (FSL) module comprising:
- a single crystal frequency selective limiter (FSL) substrate;
- a polycrystalline FSL substrate;
- an FSL circuit disposed between a first surface of the single crystal FSL substrate and a first surface of the polycrystalline FSL substrate, the FSL circuit configured such that an electromagnetic EM wave provided to an input of the FSL module simultaneously propagates in both the single crystal FSL substrate and the polycrystalline FSL substrate.
Dependencies are inferred from the claim text.