Diode protects MRI receivers from high RF energy fields

2nd August 2018
Posted By : Mick Elliott
Diode protects MRI receivers from high RF energy fields

Availability and full design support capabilities for a diode for MRI applications from MACOM Technology Solutions has been announced by Richardson RFPD. The MADP-009989 diode was designed to protect MRI receivers from high RF energy fields, including long RF pulses and RF spike pulses present in most MRI machines.

This diode acts as a passive protector (limiter) for the MRI receiver. No forward bias voltage is required to turn-on the diode. It is self-biased by the RF transmitter pulse power.

A switch driver is not needed for this receiver protection application.

The diode is available in two package configurations for flexibility in design. It is ideally suited for MRI receiver protection and body coil isolation applications.

Additional key features include surface mount and axial lead package configuration options, ultra-low magnetic construction, non-cavity design, thermally-matched configuration. It is compatible with automatic insertion equipment.

 

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