dc SQUID as a tuned radiofrequency amplifier
نویسندگان
چکیده
منابع مشابه
DC SQUID Amplifier for NMR Experiments on Small Samples
Lo~v noisc prealnplifiers are requircd for the dcrcctio~\ of the magnclic rcson;nicc of s~ii:~ll size samplcs o r a l low tnagnetic fields. According to calculat~ons based on the "ell. ill " modcl. SQUID b;tscd nnlplifiers arc more suitable to NMR experiments on sn~all samplcs lhan sciniconductor amplifiers. We propose an amplification method by frequency transposition using a DC SQUID. Such a ...
متن کاملA 23.8-GHz SOI CMOS Tuned Amplifier
A 23.8-GHz tuned amplifier is demonstrated in a partially scaled 0.1m silicon-on-insulator CMOS technology. The fully integrated three-stage amplifier employs a common-gate, source–follower, and cascode with on-chip spiral inductors and MOS capacitors. The gain is 7.3 dB, while input and output reflection coefficients are 45 and 9.4 dB, respectively. Positive gain is exhibited beyond 26 GHz. Th...
متن کاملAnt Colony Optimized Tuned DC-DC Converter
Ant Colony Optimization (ACO) used to tune the Proportional and Integral (PI) controller for Single Ended Primary Inductance Converter (SEPIC) is discussed in this paper. The SEPIC is based on DC to DC converter to maintain the constant output voltage but varying input voltage. PI controller maintains a constant output of the converter, without changing sign. MATLAB simulation designing is deve...
متن کاملA DC-coupled RF Amplifier in CMOS with DC-feedback
A CMOS multistage RF amplifier with DC coupling is presented. A complete optimisation of the various stages is done to maximize the RF gain for a given power budget. To decrease the effects of offsets and tolerances in high gain multistage amplifiers usually (lossy) AC coupling is used. The presented circuit employs DC coupling and DC control circuitry to avoid coupling-induced losses. Compared...
متن کاملDc - Squid Sensor System for Multichannel Neuromagnetometry
Various DC-SQUID sensor configurations were developed for use in our 19-channel neuromagnetometer. Apart from the standard type, resistively and inductively shunted SQUIDs were made, allowing for a large screening factor p (>l). In this way signal coupling from the pick-up coil to the SQUID is facilitated and capacitive coupling between the input coil and the SQUID washer can be decreased. The ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Magnetics
سال: 1985
ISSN: 0018-9464
DOI: 10.1109/tmag.1985.1063703