ROM-Less Phase to Amplitude Converter Using Sine Wave Approximation Based on Harmonic Removal from Trapezoid Wave

Hiroomi HIKAWA  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E94-A   No.7   pp.1581-1584
Publication Date: 2011/07/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E94.A.1581
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Cryptography and Information Security
direct digital frequency synthesizer,  phase to amplitude converter,  sine approximation,  FPGA,  

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This paper proposes a new sine wave approximation method for the PAC of DDFS. Sine wave is approximated by removing the harmonic components from trapezoid waveform. Experimental results show that the proposed PAC is advantageous in the SFDR range less than 60 dBc due to its small hardware cost.