Method and automatic auxiliary device for tuning of an NMR receiving coil
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 3, 1996
Grant Date -
N/A
app pub date -
Jul 10, 1995
filing date -
Aug 12, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for tuning of the probe head impedance (Z.sub.x) of an NMR receiver coil having a receiver circuit for an NMR signal with which, by means of an RF tuning signal (3), the probe head impedance (Z.sub.x) is tuned via a first reference signal produced with real reference resistance (R.sub.0) at one location M2 within the receiver circuit is characterized in that a reference impedance (Z.sub.0) is matched at an arbitrary location in the path of the RF tuning signal (3) in the receiver circuit (10; 11) in such a fashion that a second reference signal corresponding to the first reference signal at location M2 occurs at location M2 and that subsequently, the probe head impedance (Z.sub.x) is tuned to the second reference signal at location M2. In this fashion, in the path of the NMR signal at the input to the preamplifier, the number of necessary diodes, RF chokes and other components, which can lead to signal losses, is minimized. Furthermore, in the path of the NMR signal at the input to the preamplifier during normal operating conditions, all diodes which are located here are in a non-conducting state and there are no diodes in series with the path of the NMR signal.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully