Low Noise Amps
Spectrum SEI Microwave introduces the DDX series of low noise amplifiers (LNA) designed to provide a solution for dual band GPS applications. A pair of diplexed 3-pole ceramic filters selects only the desired GPS signals, while the low-noise gain stage maintains the receiving system's sensitivity. The LNA rejects undesired signals by at least 40 dB at 1050, 1410, and 1710 MHz. The series has a frequency of 1575.42 MHz (L1) and 1227.60 MHz (L2) with bandwidth of 30 MHz min. An additional model also covers L5 frequencies. The noise measurement is 2 dB max 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 to 15V or 16 to 32 V at 75 mA (typical) and its temperature range is 㫀° C to +71° C. DC voltage applied to the center conductor of the output connector will power the preamplifier or the unit can be powered through an external DC bias connector.
Spectrum Control, Inc.
Spectrum Control, Inc.
8031 Avonia Rd.
Fairview, PA, 16415
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