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| Precision Supercomponents For Critical Applications PSC-4493 SERIES LMDS WIRELESS FILTERS FEATURES * * * * * PARAMETRIC CONSTANT DELAY BANDPASS FILTERS MINIMIZED PARABOLIC, LINEAR AND RESIDUAL COMPONENTS OF DELAY HIGH SELECTIVITY SMALL SIZE FREQUENCY RANGE 500-5000MHZ DESCRIPTION Constant Delay Filters are essential in wireless systems that are transmitting or receiving data at rapid rates in limited bandwidth channels. Here sharp filtering along with constant group delay must be present. To this end, Aeroflex has developed a series of high performance bandpass networks that meet these requirements. These high performance IF Filters utilize a constantdelay / sharp attenuation parametric non-minimum phase function polynomial. The design is based upon minimizing selected coefficients of the power series expansion of the group delay response (linear and parabolic terms) to minimize pulse distortion of the applied signal while providing sharp attenuation characteristics. APPLICATION: COMMERCIAL WIRELESS SYSTEMS FOR VOICE/DATA/VIDEO PSC-4493 SERIES PSC-4493 SERIES SPECIFICATIONS PSC-4493-1 CHARACTERISTICS CENTER FREQUENCY (FC) PASSBAND 380 MHZ ATTENUATION AT -310 MHZ FROM FC ATTENUATION AT +290 MHZ FROM FC ATTENUATION AT +590 MHZ FROM FC ULTIMATE ATTENUATION INSERTION LOSS AT FC PASSBAND RETURN LOSS PASSBAND GROUP DELAY MAXIMUM LINEAR DELAY COEFFICIENT OVER PASSBAND MAXIMUM PARABOLIC DELAY COEFFICIENT OVER PASSBAND RESIDUAL DELAY OVER PASSBAND RESPONSE CURVES PSC-4493-1 LIMITS 1160 MHZ AMPLITUDE FLATNESS <.2 DB/60 MHZ > 15 DB >15 DB >70DB >70 DB TO 3000MHZ 4 DB MAXIMUM 15 DB MINIMUM (IN/OUT) 100 PS MAXIMUM < 8 PS/MHZ OVER ANY 60 MHZ <.1 PS/MHZ2 OVER ANY 60 MHZ <500 PS OVER ANY 60 MHZ OUTLINE DRAWING PSC-4493-1 Figure 1: Overall Response .40 2.000 IN OUT .340 .12 1.76 .060 X 4 .120 .060 x 4 Figure 2: Passband Response .140 PSC-4493 SERIES SPECIFICATIONS PSC-4493-2 CHARACTERISTICS CENTER FREQUENCY (FC) PASSBAND 40 MHZ ATTENUATION AT - 70 MHZ FROM FC ATTENUATION AT +70 MHZ FROM FC ATTENUATION AT +140 MHZ FROM FC ULTIMATE ATTENUATION INSERTION LOSS AT FC PASSBAND RETURN LOSS PASSBAND GROUP DELAY MAXIMUM LINEAR DELAY COEFFICIENT OVER PASSBAND MAXIMUM PARABOLIC DELAY COEFFICIENT OVER PASSBAND RESIDUAL DELAY OVER PASSBAND RESPONSE CURVES PSC-4493-1 LIMITS 780 MHZ AMPLITUDE FLATNESS <.1 DB > 10 DB >45 DB >55 DB >70 DB TO 4000MHZ 5 DB MAXIMUM 15 DB MINIMUM (IN/OUT) 500 PS MAXIMUM < 8 PS/MHZ <2.5 PS/MHZ2 <500 PS OUTLINE DRAWING PSC-4493-2 .340 1.500 Figure 3: Overall Response OUT IN .340 .12 1.23 .150 .060 x 4 Figure 4: Passband Response .110 .060 X 4 Precision Supercomponents For Critical Applications PSC-4493 SERIES CURVE FIT - 4493-1 CURVE FIT - 4493-2 Precision Supercomponents For Critical Applications 35 South Service Road Plainview, NY 11803 TEL: 516-694-6700 FAX: 516-694-2562 |
Price & Availability of PSC-4493
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