carrier driven if driven (linear if qam) (linear rf pm) frequency range (note 1) (note 2) rf if carrier sideband carrier sideband conversion model in and out (ghz) rejection rejection rejection rejection loss number (ghz) (note 3) (dbc) (dbc) (dbc) (typ./min.) (typ./ max.) page notes sdm0102lc1cd 1 ? 2 dc ? 0.5 25 20 35 25 / 15 8 / 10 59 sdm0104lc1cd 1 ? 4 dc ? 0.5 30 20 34 25 / 15 8 / 10 61 sme0104li1md 1 ? 4 dc ? 0.5 30 30 35 35 / 27 10 / 12 63 8 sdm0204lc1md 2 ? 4 dc ? 0.5 30 20 35 20 / 18 8 / 10 65 sdm0208lc1md 2 ? 8 dc ? 0.5 20 20 25 20 / 18 9 / 11 67 sme0208li1md 2 ? 8 dc ? 0.5 20 30 25 35 / 25 8 / 11 69 8 sm0408lc2md 4 ? 8 dc ? 0.5 25 24 30 24 / 20 6 / 9 71 sm0812lc2md 8 ? 12 dc ? 0.5 35 23 30 23 / 20 6 / 9 73 sm0218lc1cd/md 2 ? 18 dc ? 0.5 12 18 25 18 / 15 8 / 12 75 sm0618lc2md 6 ? 18 dc ? 0.5 12 18 25 20 / 18 8 / 10 79 sme0618li1cd/md 6 ? 18 dc ? 0.5 20 28 25 28 / 25 9 / 13 81 s chottky diodes, 8 sm1218lc2md 12 ? 18 dc ? 1 15 15 20 23 / 20 7 / 10 85 sm0226lc1md 2 ? 26 dc ? 0.5 15 15 20 18 /15 12 / 15 87 sm0206mavc 2 ? 6 dc ? 30 mhz n/a n/a 25 23 / 20 8.5 / 11.5 89 pin diodes sm0618mavc 6 ? 18 dc ? 30 mhz n/a n/a 35 27 / 28 7 / 11.5 9 1 pin diodes smc0618lavc 6 ? 18 dc ? 500 mhz n/a n/a 35 32 / 33 16 / - 9 3 schottky diodes sme0618diq 6 ? 18 ttl n/a n/a 30 30 / 25 10 / 13 95 digital phase/vector general all modulators and ssb upconverters require that at least one of the input frequency bands (carrier or modulation) has sufficient power to turn on the semiconductors used in the various designs (i.e., s chottky diodes or pin diodes). all modulators yiel d a frequency spectrum that utilizes both sidebands on either side of the output suppressed carrier. s sb upconverters employ an internal if 90 degree hyb rid to yield only 1 rf sideband output. this is offset above or below the input lo by the if freque ncy (test data is recorded for the upper sideband o nly). schottky diode (standard) modulators have the greatest speed and bandwidths, but yield rf out put powers of typically less than 0 dbm. pin diode (optional) designs can only be driven at modulation rates of less than 30 mhz, but will yiel d output rf powers exceeding +5 dbm. pin or schott ky modulators that vary only the rf carrier phase, in many discrete steps or continuously, are referred to as phase shifters or frequency translat ors respectively. when output rf amplitude and phase control is required, the device is usually ca lled a vector modulator. for the latter device, ph ase accuracy is usually specified over a given amplitude range (in db). all miteq modulators can be driven in the carrier or modulation modes as exp lained below, but test data is only recorded in the modulation driven mode. section 3 notes note 1: carrier driven: lo = +13 dbm, i/q = 0 db m. used when any amplitude variation or pulse shap e of the modulation must be accurately transferred to the rf output envelope. a communicat ion example would be directly modulating a microwav e carrier with gaussian shaped i/q digital pulses to minimize the channel bandwidt h required. note 2: modulation driven: rf = 0 dbm, i/q = +10 d bm or 10 ma or ttl. used when rf input has wide dy namic range, such as for military and commercial doppler frequency shift generation or co rrections. if desired, the harmonic distortion of the relatively fixed and higher level i/q drive third order harmonics can be linearized by ?r esistance/diode? or digital ?rom? wave shaping techn iques. the latter is often used in vector modulator applications, such as in the model sme0618li1diq design. note 3: to specify the if frequency for ssb upconver ter usage, select from the following standard optio ns and add to end of model number or contact miteq: suffix a: 20?40 mhz, suffix b: 40?80 mhz, suffi x c: 100?200 mhz, suffix d: 500?1000 mhz, suffi x q: i/q inputs note 4: conversion loss (cl) is relative to lowest p ower input (f o , f m ). all other outputs (including f o , are relative to the desired upper (f o + f m ) output. note 5: standard units with if hybrids are aligned f or upper sideband operation. for lower sideband o r selectable sideband, contact miteq. note 6: last two characters in model number indicate standard outline number, see outline section. note 7: question and answer modulator application no tes available, contact factory. note 8: hermetically sealed housing. ssb upconverters with internal if hybrids f m f o f m f o rom d/a rom d/a sdm, sml-a...d single-sideband upconverter lo and 1/2 lo smc, sme...avc/diq analog/digital, phase/amp control mpsk 4 ssb upconverters and vector modulators/phase shifte rs section three analog or digitally controlled vector modulators/fr equency translators
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