As the technology scales down, besides CAD tools and design guidelines, understanding circuit performance degradation as a consequence of transistor becomes essential for designers. Due to several adverse environmental conditions, study in power amplifier (PA) is very demanding research. In this paper, an RF PA experimentally studied observe various characteristic degradations broad range opera...

We introduce and study a new class of generalized inverses in rings. An element ring R has Zhou inverse if there exists b∈R such that bab=b,b∈comm2(a),an−ab∈J(R) for some n∈N. We...

We show there is a unique maximal positive variety of languages which does not contain the language (ab)∗. This variety is the unique maximal positive variety satisfying the two following conditions: it is strictly included in the class of rational languages and is closed under the shuffle operation. It is also the largest proper positive variety closed under length preserving morphisms. The or...

Definition 1.1. If S is a multiplicative subset of a ring A (commutative with 1), the quotient hyperring A/mS = (A/mS,+, ·,−, 0, 1) is defined as follows: A/mS is the set of equivalence classes with respect to the equivalence relation ∼ on A defined by a ∼ b iff as = bt for some s, t ∈ S. The operations on A/mS are the obvious ones induced by the corresponding operations on A: Denote by a the e...

The van Lint-Wilson AB-method yields a short proof of the Roos bound for the minimum distance of a cyclic code. We use the AB-method to obtain a different bound for the weights of a linear code. In contrast to the Roos bound, the role of the codes A and B in our bound is symmetric. We use the bound to prove the actual minimum distance for a class of dual BCH codes of length q2− 1 over Fq. We gi...