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Polar transmitters suffer from the problem of having high out-of-band noise. To solve this problem, most of the proposed solutions rely on increasing the sampling rate of the phase branch. In this paper, we present a novel method based on processing the digital radius signal in order to reduce the out-of-band noise. The proposed method modifies the output of the Digital-to-Analog Converter (DAC) in...
The polar transmitter is an increasingly interesting architecture for building up transmitters. One of the most important components of the polar transmitter is the Digitally Controlled Oscillator (DCO). This component takes digital codewords representing instantaneous frequencies as input and produces either square waves or cosine waves with periods corresponding to the instantaneous frequencies...
The polar transmitter is an increasingly interesting architecture for modern wireless communication devices. Several studies have been done investigating optimal hardware architectures with minimal power consumption and space. In this paper, we present a mathematical analysis of the signals in a polar transmitter. We study the statistical and spectral properties of the amplitude and phase of the baseband...
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