Analysis of Measurement and Application of Digital to Analog Converters for Software Defined Radio Hybrid System
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Software defined radio (SDR) and cognitive radio have become the development trend for military or civilian radio stations. This paper analyzes the digital to analog (DAC) system based on software defined radio applications. The measurement procedure and calibration technique for hybrid signal system are described in detail. In order to maximize the utilization of the image spectrum and achieve better performance for communication, the sub-Nyquist rate DAC system with different construction modes is introduced. The two-phase holding reconstruction mode utilizes higher order image spectrum by adjusting duty cycle of the two phases. This technique based on SRD has the merit of lower power consumption and higher efficiency for communication system.
KeywordsSoftware Defined Radio (SDR) Hybrid system DAC Sub-Nyquist Multi-mode Spectrum Utilization
This work is supported by the National Natural Science Foundation of China under Grand 61171062 and Grand 61571155.
- 1.Mitola J (1992) Software radios-survey, critical evaluation and future directions. In: National Telesystems Conference, Washington, DC, pp:13/15–13/23Google Scholar
- 4.David ER, Jan V, Jason H, Mihai M (2011) X-parameters – fundamental concepts. In: X-parameters characterization, modeling, and design of nonlinear RF and microwave components. Cambridge University Press, Cambridge, pp 20–44Google Scholar
- 7.Ribeiro DC, Cruz PM, Prata A, Carvalho NB (2014) Automatic characterization of RF DACs for software defined radio applications. In: IEEE MTT-S International Microwave Symposium, Tampa, FL, pp. 1–4Google Scholar
- 8.Ribeiro DC, Cruz PM, Prata A, Carvalho NB (2013) Synchronous frequency domain measurements for the extraction of X-parameters in digital to analog transmitters. In: IEEE MTT-S Int. Microw. Symp. Dig., pp. 1–4Google Scholar
- 12.Blockley P, Gunyan D, Scott JB (2005) Mixer-based, vector-corrected, vector signal/network analyzer offering 300kHz-20GHz bandwidth and traceable phase response. In: IEEE MTT-S International Microwave Symposium Digest, pp. 1497–1500Google Scholar
- 16.Williams DF, Clement TS, Hale PD, Dienstfrey A (2006) Terminology for high-speed sampling-oscilloscope calibration, 68th ARFTG Conf. Dig., pp. 9–14Google Scholar
- 17.Yuan-Shih CS, Nam-Seog Kim, Rabaey JM (2008) Multi-mode sub-Nyquist rate digital-to-analog conversion for direct waveform synthesis. In: IEEE Workshop on Signal Processing Systems, Washington, DC, pp. 112–117Google Scholar