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The Intermediate Frequency Concept
Stepping up & down in frequency
Bruker BioSpin utilizes the Intermediate Frequency (IF) concept for achieving operating frequencies greater than and less than X-band (9 GHz). The most significant advantage of this technique is that the proven X-band technology for excitation and detection is retained regardless of the frequency used for excitation of the paramagnetic species.
- Utilizes proven X-band technologies
- Transfers all X-band bridge features to new operational frequency
- ELDOR
- MPFU
- SPFU
- Reduces cost and complicity for adding additional microwave frequencies
Within the IF concept, the frequency for excitation and detection is at X-band (9.2 - 9.9 GHz). The CW and pulse (SPFU, MPFU, and ELDOR) excitation frequency is then converted to the desired operational frequency using the Local Oscillator (LO). The resulting operational frequency (W-, Q-, S-, or L-band) is then directed to the appropriate resonator. The resonator response is then converted back to X-band again using the LO for detection via the CW or pulse arm in the X-band bridge.
