revisiting that Bode Phaser

[Martin Czech]

Yes, I see now. The signal is split into two branches,
so only phase difference matters.
Sometimes I'm blind.

Suggestions for multipliers?
Do you think that an external predistortion (antidistortion)
stage for a 1496 will be a good idea? Recently a parcel
from Reichelt arrived with some nice japanese dual transistors.
I think it could be worth a try to use them to upgrade the
1496 to the linear 1495.

Even then this linearized input will have more distortion
then the other emitter degenerated. So it is then
used for the joystick...


m.c.

:::From: jhaible at t-online.de (jh.)
:::To: "Martin Czech" <czech at Micronas.Com>
:::Cc: <synth-diy at node12b53.a2000.nl>
:::Subject: Re: revisiting that Bode Phaser
:::Date: Wed, 29 Nov 2000 10:20:24 +0100
:::X-Sender: 320011350262-0001 at t-dialin.net
:::
:::
:::> mmmh, I guess a PDN network is involved, so you get not excactly 90 DEG
:::phase
:::> shift, but phase difference. Does this shift the notches away from, the
:::ideal
:::> Hilbert case?
:::
:::You can (mathematically) split it into the actual hilbert transform
:::(approximation)
:::part, and an all pass filter common to both PDN branches.
:::
:::JH.
:::