Description

K Band Quadrature Demodulator with Integrated Fractional-N PLL and VCO Features: Fractional-N synthesizer with low phase noise VCO K band quadrature demodulator Programmable via 4-wire SPI RF operating frequency range: 17 GHz to 22 GHz LO internal frequency range: 17 GHz to 21.5 GHz Double sideband noise figure: 5 dB at maximum conversion gain Output integrated phase noise, 1 kHz to 10 MHz: <1° Maximum conversion gain of >50 dB Conversion gain control range of >50 dB IM3 of −54 dBc at −30 dBm composite input level, ΔfRF = 1 MHz 3 baseband, SPI-selectable LPFs with corner frequencies of: 125 MHz, 250 MHz, and 500 MHz on each baseband path