micronetics / 26 hampshire drive / hudson, nh 03051 / tel: 603-883-2900 / fax: 603-882-8987 web: www.micronetics.com d d escription escription micronetics' line of full band noise sources are specially designed for easy integration into microwave systems. they feature rugged construction with excellent long-term stability. configurable to your requirements: micronetics full band noise sources are based on a coaxial design as the base part. as standard options, noise sources can be ordered with either ? coaxial isolator ? waveguide output ? waveguide isolator each noise source is calibrated to the output port so no external deembedding of calibration data is necessary. in addi - tion to the rf output choices, there are also different packages available to meet a wide range of mechanical con - straints. s s pecifications pecifications n operating temp: -55 to +95 o c n storage temp: -65 to +125 o c n supply voltage: +15 , +28 vdc n temp stability: 0.01 db/ o c n ouput impedance: 50 ohm n peak factor: 5:1 w w aveguide aveguide c c hart hart f ullband o utput c haracteristics f or u se in s ystems model frequency rf output style excess noise codes ratio (db) rfn25l 1.0 to 2.0 ghz 30(min) n,n1 q, x, w, y rfn25s 2.0 to 4.0 ghz 30(min) n,n1 q, x, w, y rfn25c 4.0 to 8.0 ghz 30(min) n,n1 q, x, w, y rfn25c1 3.95 to 5.85 ghz (waveguide only) 25(min) n,n1 x, y rfn25c2 5.85 to 8.20 ghz (waveguide only) 25(min) n,n1 x, y rfn25x * 8.0 to 12.4 ghz 25(min) n,n1 q, x, w, y rfn25ku 12.4 to 18.0 ghz 25(min) n,n1 q, x, w, y rfn25k 18.0 to 26.5 ghz 25(min) y ns2640 26.5 to 40 ghz 14 to 20 db see chart * wavegide frequency is 8.2 to 12.4 ghz f ullband c alibrated m icrowave n oise s ources l, s, c, x, k u , k, k a b ands 1 gh z to 40 gh z r r ugged ugged /s /s table table d d esign esign : : the heart of these noise sources is a small chip and wire hermetic noise module. this is embedded in the housing with a precision launch to the coaxial jack. this design gives is much more stable and rugged than traditional coaxial noise sources which rely on pill packaged diodes and beryllium copper bellow assemblies which are not only are less reliable, but use hazardous materials. c c alibration alibration and and q q uality uality a a ssurance ssurance : : each noise source is accurately calibrated using a reference noise source traceable to nist/npl calibration data consists of 5 calibration points across the full-band. data is supplied as a print out. special calibration data can also be supplied upon request (consult factory). standard choices are: ? more calibration points across the spectrum ? special discrete calibration frequencies ? data supplied in soft format as screen capture or text file on floppy or cd-rom. in addition to the calibration data, a certificate of calibration and a certificate of con - formance is supplied with each unit. bands: ? l ? s ? c ? x ? ku ? k ? ka model frequency waveguide rfn25c1 3.95 to 5.85 ghz wr-187 rfn25c2 5.85 to 8.20 ghz wr-137 rfn25x 8.20 to 12.4 ghz wr-90 rfn25ku 12.4 to 18.0 ghz wr-62 rfn25k 18.0 to 26.5 ghz wr-42 ns2640 26.5 to 40.0 ghz wr-28 http://www.micronetics.com/noise_source/coaxial_waveguide.pdf
h h ow ow to to o o rder rder r f n 2 5 x - x x x model l = l band * s = s band * c = c band c1 = c band c2 = c band x = x band ku = ku band k = k band ka = ka band package n = n package q = q package x = x package y = y package option 0 = plain 1 = coax isolator 2 = waveguide 3 = waveguide isolator bias voltage a = +28v b = +15v n s 2 6 4 0 - x x x package a = lug package b = bnc package option 1= coax isolator, 2.92 mm (f) 2= coax isolator, 2.92 mm (m) 3= waveguide 4= waveguide isolator 5= plain, 2.92 mm (f) 6= plain, 2.92 mm (m) bias voltage a = +28v b = +15v f ull b and m icrowave n oise s ources l, s, c, x, k u , k, k a b ands u u sing sing n n oise oise for for b b uilt uilt - - in in -t -t est est there are three primary uses for employing a noise signal for built-in-test. 1. noise temperature (noise figure) or sensitivity testing: this test uses the noise source to supply a known excess noise ratio (enr) to a device under test for a y-factor measurement. by taking two receiver readings, one with the noise on and one with it off, y-factor can be determined. by knowing the enr and y-factor, one can calculate noise temperature (figure) or sensitivity. 2. frequency response: the noise source being broadband can be used as a replacement of a swept source to calculate frequency response of a receiver or other device. by putting in a known spectral signal at the input and taking a reading at the output, one can determine the gain or loss over frequency of the entire system. noise sources are inherently extremely stable devices. in addition, the circuitry is much simpler than a swept source which increases reliability and lowers cost. 3. amplitude reference source: the noise source can be used as a known reference signal. by switching in the noise source from the live signal, a quick test can be performed to check the health of the chain or calibrate the gain/loss. for this test, noise can be injected into the if system as well as the rf to test/calibrate the path. for more information on using noise for built-in-test, read the feb 2004 microwave journal article authored by patrick robbins of micronetics. http://www.micronetics.com/articles/microwave_journal_02-04.pdf u u seful seful n n oise oise e e quations quations calculating y-factor: y fact = n 2 / n 1 where n 2 is measured power output with noise source on and n 1 is the measured power output with noise source off. calculating noise figure from enr and y-factor: nf(db) = enr (db) - 10 log10 (y fact -1) converting enr to noise spectral density (n 0 ): 0 db enr = -174 dbm/hz calculating noise power in a given bandwidth (bw) from noise spectral density: power (dbm) = n 0 + 10log(bw) * waveguide not available on s and l models http://www.micronetics.com/noise_source/coaxial_waveguide.pdf
ns2640 26.5 to 40 gh z p akaging o ptions outline dwg bias connector bias voltage rf output type ns2640-a1a-70 lug +28 vdc coax isolator, 2.92mm (f) connector ns2640-a2a-70 lug +28 vdc coax isolator, 2.92mm (m) connector ns2640-a3a-70 lug +28 vdc waveguide ns2640-a4a-70 lug +28 vdc waveguide isolator ns2640-a5a-70 lug +28 vdc plain, 2.92 mm (m) connector ns2640-a6a-70 lug +28 vdc plain, 2.92 mm (f) connector ns2640-b1a-70 bnc (f) +28 vdc coax isolator, 2.92mm (f) connector ns2640-b2a-70 bnc (f) +28 vdc coax isolator, 2.92mm (m) connector ns2640-b3a-70 bnc (f) +28 vdc waveguide ns2640-b4a-70 bnc (f) +28 vdc waveguide isolator ns2640-b5a-70 bnc (f) +28 vdc plain, 2.92 mm (m) connector ns2640-b6a-70 bnc (f) +28 vdc plain, 2.92 mm (f) connector ns2640-a1b-70 lug +15 vdc coax isolator, 2.92mm (f) connector ns2640-a2b-70 lug +15 vdc coax isolator, 2.92mm (m) connector ns2640-a3b-70 lug +15 vdc waveguide ns2640-a4b-70 lug +15 vdc waveguide isolator ns2640-a5b-70 lug +15 vdc plain, 2.92 mm (m) connector ns2640-a6b-70 lug +15 vdc plain, 2.92 mm (f) connector ns2640-b1b-70 bnc (f) +15 vdc coax isolator, 2.92mm (f) connector ns2640-b2b-70 bnc (f) +15 vdc coax isolator, 2.92mm (m) connector ns2640-b3b-70 bnc (f) +15 vdc waveguide ns2640-b4b-70 bnc (f) +15 vdc waveguide isolator ns2640-b5b-70 bnc (f) +15 vdc plain, 2.92 mm (m) connector ns2640-b6b-70 bnc (f) +15 vdc plain, 2.92 mm (f) connector please consult factory for models without active links to drawings. tel: 603-883-2900 x346 or email noisesales@micronetics.com http://www.micronetics.com/noise_source/coaxial_waveguide.pdf
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