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Abstract #1411

Rapid high power transmit-receive switching using a timed cascade of PIN diodes

Christoph Michael Schildknecht1, Markus Weiger1, Romain Froidevaux1, and Klaas Paul Pruessmann1
1Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zürich, Switzerland

For imaging of short-T2 samples often very short excitation pulses are desired, which requires high peak RF power. In this work, a transmit-receive switch is presented that can handle 18kW peak RF power and switches its state in less than 1µs. The novel design uses a timed cascade of anti-parallel PIN diode pairs to achieve this performance.

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