Amplitude modulator, in particular for mobile radio, and a...

Details Amplitude modulator, in particular for mobile radio, and a... Amplitude modulator, in particular for mobile radio, and a...

2005-08-05

2008-09-23

Phu, Sanh D (Department: 2618)

Telecommunications

Transmitter

Amplitude modulation

C455S102000, C455S127500, C455S126000, C327S148000

Reexamination Certificate

active

07428407

ABSTRACT:
An amplitude modulator is provided, which has a first supply connection for supplying a supply potential and a second supply connection for supplying a ground potential. An amplifier stage with a push-pull output stage has a signal input for supplying a signal, and has a single-pole output for emitting a single-ended signal. In order to supply the push-pull output stage, the amplifier stage is connected in a supply path between the first and the second supply connection. A first controllable voltage source and a second controllable voltage source are also provided, whose control inputs are connected to a connection for control purposes by means of a differential modulation signal, and are connected between the amplifier stage and the first supply connection, or the amplifier stage and the second supply connection. Amplitude modulation is thus achieved by modulation of the supply voltage or of the supply current to the push-pull output stage.

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patent: 1 170 915 (2002-01-01), None

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