cheap 120Khz sine generator

[[email protected]]

I think I'd use a "phase shift oscillator", fast, cheap
and easy, but I haven't gone to 120kHz with that type,
I'd don't know the practical upper limit on them,
anyone else know?

Hundreds of GHz, I imagine, depending on the technology. Building a
ring oscillator used to be the standard way of illustrating the speed
some newly devised version of the transistor.

 

[SBS]

Johnny Chang ([email protected]) ha scritto:

:::: i'm trying to find a very inexpensive way to generate a 120Khz sine
:::: wave to act as a carrier wave for a cheap system.

::: ** Is this "carrier" to be FM or AM modulated ??

:: BPSK

How can you impement that modulation technique?

 

[John Fields]

Johnny Chang ([email protected]) ha scritto:

:::: i'm trying to find a very inexpensive way to generate a 120Khz sine
:::: wave to act as a carrier wave for a cheap system.

::: ** Is this "carrier" to be FM or AM modulated ??

:: BPSK

How can you impement that modulation technique?

 

[Rich Grise]

We plan to use BPSK, why does the oscillator type matter? some other
circuit will be handling the modulation and just wants a wave for it.

The oscillator type matters because of the modulation method.

Is this some kind of class project or something? How is it that you
intend to use Binary Phase-Shift Keying, without even knowing what
kind of oscillator is amenable to that sort of thing?

Heck, use two oscillators, or an oscillator and inverter, and a
freakin' data selector!

Try looking up http://www.google.com/search?q=oscillator-circuit

and so on.

Good Luck!
Rich

 

[Johnny Chang]

The oscillator type matters because of the modulation method.

Is this some kind of class project or something? How is it that you
intend to use Binary Phase-Shift Keying, without even knowing what
kind of oscillator is amenable to that sort of thing?

Heck, use two oscillators, or an oscillator and inverter, and a
freakin' data selector!

Try looking uphttp://www.google.com/search?q=oscillator-circuit

and so on.

Good Luck!
Rich

well someone else is doing the phase shift keying and he said all that
he needs is a 120Khz sine wave as a reference, so I was going on what
he said.

 

[Johnny Chang]

The oscillator type matters because of the modulation method.

Is this some kind of class project or something? How is it that you
intend to use Binary Phase-Shift Keying, without even knowing what
kind of oscillator is amenable to that sort of thing?

Heck, use two oscillators, or an oscillator and inverter, and a
freakin' data selector!

Try looking uphttp://www.google.com/search?q=oscillator-circuit

and so on.

Good Luck!
Rich

yeah, it is a class project, and someone else is doing the phase shift
keying and he said all that
he needs is a 120Khz sine wave as a reference, so I was going on what
he said.

with all these different options are there any good resources i can
use to compare and contrast and find out what I should use based on
criteria like modulation and cost and reliability?

i've googled everything i can think of