Could some electronics guru on this newsgroup please clarify this a bit ?
The S parameters listed for the RF BJT BFU520 are listed with reference to Vout, Iout. This is unfamiliar. to me. Assuming the common emitter configuration, is this the same as Vcollector, Ic ?
Thanks in advance.
S parameters have a standard definition, and IME are always quoted for the common-emitter configuration since it's by far the most common in the RF world. Thus the port connected to the base is port 1, and the one connected to the collector is port 2.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
I agree that the common emitter configuration is the de-facto standard. Then can it be safely assumed that Vout, Iout correspond to Vc, Ic Vin, Iin correspond to Vbase, Ibase
Am I correct ?
It appears that semiconductor companies are in their own world. The datasheet for BFR92A(another RF BJT from NXP Semi.) has a list of Smith charts corresponding to S11, S12 ... which is even more irritating, becaase at best one can read off approximate values from the charts.
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