000			02659nab a22002537i 4500
003			KOSZ 005
005			20170303120732.0
008			160308s1996 ||||| ||||0|| ||eng
035			_aPBN-R:351380
040			_cKOSZ 005/md _aPBN-ID
041	0		_aeng _beng
100			_aWAWRYN, Krzysztof. _d1996 - . _bPolitechnika Koszalińska - Wydział Elektroniki, _cKatedra Systemów Cyfrowego Przetwarzania Sygnałów
245	1	0	_aA formal language description and inference strategy for analog circuit design / _cKrzysztof Wawryn.
260			_c1996.
520			_aThis article deals with a new intelligent analog circuit design system. Unlike previous design methods, this approach introduces a formal circuit representation for both the numerical and heuristic knowledge of the design system. The predicate logic circuit representation is proposed as a new formal analog circuit description language. The language’s syntax and semantics provide a precise symbolic description of analog circuit functionality at higher levels of hierarchy and network component connectivities, together with CMOS transistor sizes as the lowest level of hierarchy. It is shown how sentence conversion rules of language grammar can be used to derive transistor level circuits from input performance specifications. Language sentences have the form of clauses. In addition to clause representation, a frame representation to reflect VLSI design hierarchy is also introduced. An original bidirectional inference mechanism with elements of hypothesis has been introduced to infer designs from the knowledge in clause and frame representations. The unique feature of this circuit knowledge representation is its ability to automate the analog CMOS circuit design process. The design methodology is described in detail. The proposed iterative closed loop design system adopts an expert system approach to provide topological synthesis, uses a SPICE circuit simulator to evaluate the circuit performance, and uses a new diagnostic expert system to provide advice on how to improve the design. The implementation of the methodology and associated experimental results for simple CMOS operational amplifier designs are also presented.
650		0	_aElektronika.
650		0	_aElectronics.
650		0	_aComputer science – field of technical sciences.
650		0	_aOriginal article.
650		0	_aOryginalny artykuł naukowy.
650		0	_aInformatyka – dziedzina nauk technicznych.
773			_iW: _tCircuits Systems and Signal Processing. - _x0278-081X _dBirkhauser Boston Inc. - _g1996, Vol. 15, no. 6, s. 771-805.
942			_cART _2UKD
999			_c7844 _d7844