Direct Conversion Base Station Transceiver Part numbers link to product information Frequencies Include: From 400 to 2700 MHz ADC Rx 0 90 Limiter Filter LNA VVA Filter 0 180 Direct Quadrature Demodulator or Direct Conversion Mixer ADC (Demodulator Shown) Synthesizer/PLL Circulator Synthesizer/PLL Direct Quadrature Modulator Dual Fractional-N Synthesizers/PLLs Combiner Tx Divider DAC Ultra Linear PA Driver Σ 0 90 DAC