ELECTRIC CIRCUIT FRAGMENT WITH TRANSMIT/RECEIVE SWITCH TOPOLOGY

The invention relates to an electric circuit fragment comprising a coil, a low noise amplifier, a first switch, a power amplifier and a second switch. The coil is configured for generating an oscillating magnetic field in a transmit state and/or for detecting an external oscillating magnetic field i...

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Bibliographische Detailangaben
Hauptverfasser:	GLEICH, Bernhard, RAHMER, Juergen Erwin, SCHMALE, Ingo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS RESONATORS TESTING TRANSMISSION
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Beschreibung
Zusammenfassung:	The invention relates to an electric circuit fragment comprising a coil, a low noise amplifier, a first switch, a power amplifier and a second switch. The coil is configured for generating an oscillating magnetic field in a transmit state and/or for detecting an external oscillating magnetic field in a receive state. The low noise amplifier is connected in series to the coil. The first switch is connected in parallel to the low noise amplifier and is configured to short-circuit input-terminals of the low noise amplifier. The power amplifier is connected in series to the low noise amplifier. The second switch is arranged between the power amplifier output and ground potential, and is configured to ground the power amplifier output in the receive state. Thereby, it is possible to improve the shielding of the low noise amplifier, in particular, during the transmit state of the electric circuit fragment.