d-package outline vmm-2d series vector i&q modulator 2.5 to 6.5 ghz / high rate analog qpsk for msk systems / excellent phase & ampli. bal. / sma fo r f u rther i nfor m at i on contact m err i m ac / 41 fa irfi e l d p l., w es t ca l d w e ll, nj , 07006 / 973 - 575 - 1300 / fax 973 - 575 - 0531 general notes: 1. a vector modulator is used to phase modulate an rf carrier with complex analog signals. 2. merrimac vector modulators consist of a quadrature hybrid and an in-phase power divider. 3. units in the vmm-2d series are capable of modulating the carrier at up to 10% of the rf bandwidth. 4. these units comply with relevant sections of mil-m-28837 and may be supplied screened for compliance with additional specifications for military and space applications requiring the highest reliability. state data input (ma) ins. loss phase i q db abs. bal. 1 4.5 0 -9.2 0 0 2 3.18 3.18 -9.3 45.2 0.2 3 0 4.5 -9.3 91.3 1.3 4 -3.18 3.18 -8.8 134.5 0.5 5 -4.5 0 -9.3 177.8 2.2 6 -3.18 -3.18 -9.6 -135.8 0.8 7 0 -4.5 -9.6 -88.4 1.6 8 3.18 -3.18 -9.0 -43.7 1.3 typical magnitude/phase plot at 2500 mhz notes: 1. tolerance on 3 place decimals .030(.76) except as noted. 2. dimensions in inches over mm. principal specifications rf/lo rf/lo model center freq., bandwidth, number f o , ghz mhz vmm-2d-****b 2.5 to 6.5 10% of f o for complete model number replace ****with desired center frequency, fo in mhz general specifications rf input: +10 dbm nom. modulation inputs: 0 dbm max. vswr: 2.0:1 max. impedance: 50 w nom. insertion loss (below modulation input) : 12 db max. modulation accuracy (measured @ 4 quadrants, 0 dbm input) amplitude balance: 1 db phase balance: 5 weight, nominal: 3 oz (84 g) operating temp: -- 55 to +85c 09jul96
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