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Implementation of Wideband Low Noise Down-Converter for Ku-Band Digital Satellite Broadcasting
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 Title & Authors
Implementation of Wideband Low Noise Down-Converter for Ku-Band Digital Satellite Broadcasting
Hong, Do-Hyeong; Lee, Kyung Bo; Rhee, Young-Chul;
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In this paper, wideband Ku-band downconverter was designed to receiver digital satellite broadcasting. The low-nose downconverter was designed to form four local oscillator frequencies(9.75, 10, 10.75 and 11.3 GHz) representing a low phase noise due to VCO-PLL with respect to input signals of 10.7 to 12.75 GHz and 3-stage low noise amplifier circuit by broadband noise matching, and to select intermediate frequency bands by digital control. The developed low-noise downconverter exhibited the full conversion gain of 64 dB, and the noise figure of low-noise amplifier was 0.7 dB, the P1dB of output signal 15 dBm, and the phase noise -85 dBc@10kHz at the band 1 carrier frequency of 9.75 GHz. The low noise block downconverter(LNB) for wideband digital satellite broadcasting designed in this paper can be used for global satellite broadcasting LNB.
 Cited by
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15., Ku-band PLL LNB, 1000HC Ku PLL.