SFDRS

AcronymDefinition
SFDRSSchweizer Fernsehen DRS (Swiss Television)
SFDRSSpecial Forces Direct Recruiting Scheme (Australia)
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References in periodicals archive ?
A spreadsheet was used to calculate the G, NF, [IP.sub.3] and SFDR of cascaded circuit elements consisting of a gain element prior to the LD, that is, the LD driver, and the passive link.
The FO link's receiver contains a high efficiency ([r.sub.DET] [is greater than or equal to] 0.90 mA/ mW), high SFDR PIN diode detector.
All eight FO links of the prototype FO manifold were fabricated using in-house available computer-aided fabrication techniques and were evaluated for NF, SFDR, G, power consumption and BW.
The best performance achieved with the single-transistor, dual matching network driver was NF = 3.1 dB, SFDR = 71.7 dB-[MHz.sup.2/3], G = 21.5 dB, I = 40 mA and 2 dB BW = 117 MHz.
Table 1 shows the NF, SFDR and G performance, as well as the current requirements for each transmitter module.
Link NF SFDR G I (dB) (dB-[Mhz.sub.2/3] (dB) (mA) 1 2.4 67.5 19.6 58.3 2 2.4 68.9 22.3 54.0 3 2.4 68.9 21.2 55.4 4 2.2 70.1 19.0 54.0 5 2.4 67.9 21.4 52.3 6 2.4 69.0 20.5 53.8 7 2.6 66.0 25.5 54.0 8 2.6 68.0 19.0 52.6
In terms of SFDR, the average performance is near the DBF requirement (68.3 dB-[MHz.sup.2/3] vs.
The main tests involved the demonstration of the manifold BW, measurements of the relative performance between electrical and optical powering, and measurements of the manifold SFDR.
For the third test, a two-tone signal was generated with SFDR in excess of 75 dB-[MHz.sup.2/3], and fed to the transmit antenna.