Telecommunications – Transmitter and receiver at separate stations – Near field
Reexamination Certificate
2007-07-10
2011-10-04
Le, Thanh (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Near field
C455S106000
Reexamination Certificate
active
08032082
ABSTRACT:
There is described an amplifier for a radio frequency signal for transmitting a transmit signal to an otological apparatus. The amplifier comprises at least one power transistor for switching an output signal. A breaker gap of the power transistor is actively connected to a network such that a power loss converted in the power transistor is at least partially reduced during a switchover into a switched-on state and/or at least during a switchover into a switched-off state. The breaker gap of the at least one transistor is at least indirectly connected in series to a power supply source by way of a choke coil. The amplifier comprises a transmit coil as an output load, with the transmit coil comprising an inductor and being actively connected to the power transistor. The transmit coil is coupled to the choke coil in a transformer-like manner, with the choke coil thus being able to transmit an output power to the transmit coil. The transmit coil can generate a transmit signal from the output power.
REFERENCES:
patent: 4441210 (1984-04-01), Hochmair et al.
patent: 5293400 (1994-03-01), Monod et al.
patent: 6861811 (2005-03-01), Buij
patent: 2005/0258899 (2005-11-01), Lin
patent: 10 2004 001 660 (2005-08-01), None
patent: WO 82/00760 (1982-03-01), None
Boguslavskij Mihail
Reithinger Jürgen
Le Thanh
Siemens Audiologische Technik GmbH
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