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US 5,471,492 AGranted
Broadband matching network
AssigneeScientific-Atlanta, Inc.
InventorsRezin E. Pidgeon, Jr., Grover H. Martin
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Abstract
A broadband matching network closely matches the output impedance of a broadband amplifier to the input impedance of a laser over a broad frequency band to facilitate efficient transfer of power therebetween. As a result, the broadband amplifier does not have to generate high output power levels that cause intermodulation distortion. The matching network includes a pair of matching transformers having toroidal cores and a filter circuit.
Claims20
A laser transmission system comprising:
- a laser;
- a broadband source for outputting a modulated signal;
- and
- an impedance matching network, coupled to said broadband source, for matching the impedance of said laser to the impedance of said broadband source and for supplying the modulated signal to drive said laser the modulated signal facilitating efficient power transfer between said broadband source and said laser such that said broadband source does not generate high output levels that cause intermodulation distortion, said impedance matching network comprising
- a first transformer, an input terminal of said first transformer coupled to said broadband source, and
- a filter circuit having a first input terminal coupled to an output terminal of said first transformer and having an output terminal coupled to an input terminal of said laser, said filter circuit outputting the modulated signal from the output terminal to drive said laser.
3 more elements
Dependencies are inferred from the claim text.