BANDWIDTH ENHANCEMENT OF AN ANALOG FEEDBACK AMPLIFIER BY EMPLOYING A NEGATIVE GROUP DELAY CIRCUIT
نویسندگان
چکیده
منابع مشابه
Negative Group Delay and Superluminal Propagation: An Electronic Circuit Approach
We present a simple electronic circuit which provides negative group delays for band-limited, base-band pulses. It is shown that large time advancement comparable to the pulse width can be achieved with appropriate cascading of negative-delay circuits but eventually the out-of-band gain limits the number of cascading. The relations to superluminality and causality are also discussed.
متن کاملA Miniaturized Self-Matched Negative Group Delay Microwave Circuit
A miniaturized self-matched negative group delay (NGD) microwave circuit without the need for external matching networks is proposed. The NGD circuit is based on a modified parallel-type RLC resonator, in which lumped elements (capacitors and inductors) are implemented by microstrip gaps and high-impedance and short-circuited microstrip lines. To verify the design concept, an NGD circuit with t...
متن کاملA Compact 3.1–5 GHz RC Feedback Low-Noise Amplifier Employing a Gain Enhancement Technique
A low-noise amplifier (LNA) with main cascode amplifying stage utilizing a current-reuse transconductance-boosting technique is presented in this paper. This topology increases the effective transconductance, gm, of the input transistor and prevents a large voltage drop across the load resistor, thus reducing power consumption. The feedback topology made of source follower connected in series w...
متن کاملFeedback for High-Bandwidth Power Amplifier Linearization
Current RF power amplifier (PA) linearization techniques are presently being investigated to improve PA linearity and power efficiency. One such linearization technique, Cartesian feedback (CFB), makes use of analog feedback to linearize a nonlinear plant (Figure 1). The commanded baseband symbol, I and Q, are compared to the symbol being transmitted by the PA, the baseband symbol is predistort...
متن کاملdesign of an analog fuzzy logic controller chip
fuzzy logic has been developed over the past three decades into a widely applied techinque in classification and control engineering. today fuzzy logic control is one of the most important applications of fuzzy set theory and specially fuzzy logic. there are two general approachs for using of fuzzy control, software and hardware. integrated circuits as a solution for hardware realization are us...
15 صفحه اولذخیره 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: Progress In Electromagnetics Research
سال: 2010
ISSN: 1559-8985
DOI: 10.2528/pier10041808