A Tunable Wideband Frequency Synthesizer Using LC-VCO and Mixer for Reconfigurable Radio Transceivers

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="361910.fig.005a" src="https://static.hindawi.com/articles/jece/volume-2011/361910/figures/361910.fig.005a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>wideband mixer</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="361910.fig.005b" src="https://static.hindawi.com/articles/jece/volume-2011/361910/figures/361910.fig.005b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>variable gain combiner</td></tr></table></td></tr></table>

<table>Circuit schematics used in the proposed wideband VCO.</table>

Journal of Electrical and Computer Engineering

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Figure 5

Figure 5: A Tunable Wideband Frequency Synthesizer Using LC-VCO and Mixer for Reconfigurable Radio Transceivers 