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This paper presents a low cost and efficient method to compensate the phase and magnitude errors of transmitting ultra-wideband (UWB) linear frequency modulation (LFM) waveform with complex pre-distortion correction coefficients. In this method, a high linearity LFM waveform is generated by a direct digital synthesis (DDS) module. The phase and magnitude errors of the output LFM signal are sampled...
Implementation of a low cost wideband multi-channel up-convertor for future wireless communication System is reported in this paper. The up-convertor converts the IF signal of 1.45 GHz to the RF signal of 6 GHz-6.5 GHz, the channel bandwidth is 100 MHz. In order to obtain wideband LO and reduce the cost, the scheme of frequency multiplication is employed in the design of the LO. System block diagram...
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