A Method for Digital Radio Transmitter with Software Defined Radio

A method for arbitrary integer multiple up-converter of the frequency and flexibly configured digital RF transmitter with poly-phase filter and multiphase numerically controlled oscillator(NCO) on SDR is proposed. The test results show that this design can be in accordance with the design requirements of the low speed data sampling and can realize arbitrary multiple modulation to any carrier frequency, complete the conversion from baseband to RF output in the digital domain, meets the design requirements.