PIN mdulator for MHz

[Ludwig Kerr]

I recently discovered a device called a "PIN modulator". Here is some
more info on the various apps, for anyone who may be interested.

http://www.ieee.li/pdf/pin_diode_handbook.pdf

It is a prepackage circuit (box) with three connectors, most commonly
used to modulate GHz signals with much lower ones, down to the audio
range. However, my needs are slightly different.

Is anyone aware of a ready-made device of this type that will modulate
frequencies in the 1-30MHz range? The lowest I have seen is 500MHz.

Thank you,

Ludwig Kerr

 

[Joerg]

I recently discovered a device called a "PIN modulator". Here is some
more info on the various apps, for anyone who may be interested.

http://www.ieee.li/pdf/pin_diode_handbook.pdf

It is a prepackage circuit (box) with three connectors, most commonly
used to modulate GHz signals with much lower ones, down to the audio
range. However, my needs are slightly different.

Is anyone aware of a ready-made device of this type that will modulate
frequencies in the 1-30MHz range? The lowest I have seen is 500MHz.

HP published the most excellent app notes for PIN diodes. Then it went
to Agilent, then Avago. So it'll be a bit of detective's work to find
them but it's well worth it.

Usually the upper limit when using a PIN diode (or pair) as a modulator
is given by the carrier lifetime. You can't easily swing them a whole
lot faster than that. I mostly designed around HSMP3810 and similar
devices and those are all in the usec range, meaning you can't use them
for modulation signals in the MHz range. But of course you can get
versions under 100nsec. Very important is that the spectra of the
to-be-modulated RF and the highest expected modulation frequencies are
far apart.

 

[Jasen]

I recently discovered a device called a "PIN modulator". Here is some
more info on the various apps, for anyone who may be interested.

http://www.ieee.li/pdf/pin_diode_handbook.pdf

It is a prepackage circuit (box) with three connectors, most commonly
used to modulate GHz signals with much lower ones, down to the audio
range. However, my needs are slightly different.

Is anyone aware of a ready-made device of this type that will modulate
frequencies in the 1-30MHz range? The lowest I have seen is 500MHz.

use ordinary diodes instead ?

Bye.
Jasen

 

[vasile]

I recently discovered a device called a "PIN modulator". Here is some
more info on the various apps, for anyone who may be interested.

http://www.ieee.li/pdf/pin_diode_handbook.pdf

It is a prepackage circuit (box) with three connectors, most commonly
used to modulate GHz signals with much lower ones, down to the audio
range. However, my needs are slightly different.

Is anyone aware of a ready-made device of this type that will modulate
frequencies in the 1-30MHz range? The lowest I have seen is 500MHz.

Microwave PIN diodes works in the microwave range.
See a very old application on my site:
http://www.geocities.com/vsurducan/electro/RADAR/radar.htm
In the 30MHz range will be much easy to use any integrated IC
modulator
or a transistor based schematic.

Vasile