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39 : The [LeastVNA] - Update 2

Hello,

Allow us, please, to inform you that we revised and withdrawn
the previous description of [LeastVNA] given at:

38 : Update - The [LeastVNA] - 9 October 2019 :
/g/nanovna-users/message/4432

and then we modified and amplified it, as follows:

- - - - - - (c) gin&pez@arg (cc-by-4.0) 2019 : start - - - - - -

- From A Common User's Point Of View -

An operating [LeastVNA] system:

(1) Includes an internal or external device with at least one
external connector, where the User connects a load

(2) Has an internal or external cosinusoidal voltage generator
working within an operating range of frequencies, briefly:
"source", that produces a cosinusoidal voltage oscillation with
frequency f, briefly: "signal", as its output towards to load

(3) Produces, unavoidably, with its source, two cosinusoidal
voltage waves in f, coexisting at least into the connector, as
well as "far" beyond that, "elsewhere" internally, which are
directed, with respect to the connector, as Input and Output
waves, briefly: "waves", and named as the Reflected wave
from the load and the Incident wave to the load, respectively

(4) These coexisting waves manifest themselves locally in
various places of their paths as two locally coexisting signals,
resulting from these waves and identified by the amplitude
and phase of these two coexisting waves, respectively

(5) Separates, somewhere internally, these two coexisting waves
and delivers to itself, at two special places internally, two
separated signals r and i, identified by the amplitude and phase
of these two separated waves at these special places,
respectively, where these special places are always "far" away,
but equidistantly, from the connector, having amplitudes and
phases ( ar , pr ) and ( ai , pi ), respectively

(6) Forms and measures a couple of values for the following
two dimensionless quantities:

( amplitude ratio a, phase difference p ) ,

from these two separated signals r and i, as follows:

( a = ar/ai , p = pr - pi )

(7) Presents these two values a and p to the User as indications
or readings, with a finite number of digits of course, which are
obviously resulting from the presence of the connected load

Finally, after all that said:

(8) The User should expect that, in general, these two
indications a and p of the internally separated signals r and i
-
once again : at special places "far" away from the connected
load
-
may be quite different from the values A and P, which the User
should except that they exist between the coexisting signals
R and I on the connected load, resulting and identified
respectively from the coexisting waves there, that is from the
load connected there, which is finally the sole responsible of
their appearance during the [LeastVNA] operation
-
the User has been warned

- - - end : (c) gin&pez@arg (cc-by-4.0) 2019 - - - - - - - - - -

Sincerely,

gin&pez@arg

39