Wideband CATV amplifier with microprocessor-based slope and gain

Details Wideband CATV amplifier with microprocessor-based slope and gain Wideband CATV amplifier with microprocessor-based slope and gain

1998-01-02

1999-12-07

Mottola, Steven J.

Amplifiers

With semiconductor amplifying device

Including temperature compensation means

330284, H03G 330

Patent

active

059990597

ABSTRACT:
A broadband amplifier has a microcontroller having tables the entries of which correspond to desired variable slope and gain characteristics of the amplifier. The entries in the tables are derived from known temperature characteristics of a specific amplifier/cable combination; multiple tables are used to support multiple different configurations. The microcontroller retrieves values from the tables based on temperature data supplied thereto via a serial bus; these values are output to digital-to-analog converters which generate slope and gain control signals to control slope and gain compensation circuits in a PIN diode attenuator in the amplifier.

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patent: 5633582 (1997-05-01), Orndorff et al.

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