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Industry: Email Alert RSS FeedGPS low noise amplifiers
GPS World, Feb, 2005
Spectrum's DDX series of low noise amplifiers are designed to provide a complete solution for dual-band GPS applications. A pair of diplexed three-pole ceramic filters selects only desired GPS signals, and the low-noise gain stage maintains the receiving system's sensitivity. The LNA rejects signals by at least 40 dB at 1050, 1410, and 1710 MHz. The DDX series has a frequency of 1575.42 (L1) and 1227.60 (L2) with a bandwidth of 30 MHz minimum. A newer model also covers L5 frequencies. The noise measurement is 2 dB maximum with 1.4 dB typical. DDx's VSWR is 1.5:1 with gains of 14, 26, 34, and 45 dB, and gain flatness of /-0.5 dB. DC power is either 5-15 volts or 16-32 volts with power consumption rated as 75 mA. Spectrum Control, Inc., Fairview, Pennsylvania.
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