A Wideband Frequency Synthesizer for Built-in Self Testing of Analog Integrated Circuits. (August 2004) Wenjian Yan, B.S., Texas A&M University Chair of Advisory Committee: Dr. Jose Silva-Martinez The cost to test chips has risen tremendously. Additionally, the process for testing all functionalities of both analog and digital part is far from simple. One attractive option is moving some or all...

Chang-Wan Kim et al. 437 A CMOS frequency synthesizer block for multi-band orthogonal frequency division multiplexing ultrawideband systems is proposed. The proposed frequency synthesizer adopts a double-conversion architecture for simplicity and to mitigate spur suppression requirements for out-of-band interferers in 2.4 and 5 GHz bands. Moreover, the frequency synthesizer can consist of the f...

An adaptive time-domain postfiltering technique based on the synthesis LP filter factorisation is proposed. Information is gathered about the relation between the LP filter poles and formants for this factorisation. This technique shapes the main formant differently from the other formants. Pole locations representing the main formant are modified and optimum shaping constants for each formant ...

Abstract Wideband hybrid frequency synthesizer with phase-locked loop (PLL) and high-speed direct-to-analog converter (DAC) is presented. The use of special DAC operating modes allows to expand the generating band. Presented also provides a low phase noise due using RF mixer in PLL feedback.

Frequency synthesis has many applications in today’s commercial electronic and telecommunications system design. Some techniques exist which can be used to generate a frequency that is an integer or fractional multiple of a reference frequency. This paper describes architecture a new pure digital frequency synthesizer based on generators, counters and a register. The technique described here is...

A family of frequency synthesizers is described. Each member of the family generates one of many equally-spaced frequencies by utilizing identical modules, the number of which is related to the number of possible frequencies. For any design in the family which uses frequency division in the modules, there exists a dual design which utilizes frequency multiplication. Block diagrams and formulas ...