I want to build an LO

do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

Ask him!

In usually start with Xc and Xl around 50 ohms. Seems to work, usually.

JF should be ragging him for not furnishing values.

I do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and 100 MHz. I don't know where to start!

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

He has me kill filed.

Have a few swigs of Ambrosia and examine the problem again.

I do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and 100 MHz. I don't know where to start!

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

Yeah, that's better. It becomes a sine wave and the Fo is 9.78Mh for a calculated tank of 10MHz.

do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

any S parameter files for the devices I'm interested in using.

Are you really that dumb? Answer: Yes, you are! You're so lacking in engineering skills you can't even decipher the convenient notation I've developed to make designing tanks, automatically calculated by Spice.

You can't cure stupid... stupid is forever... Larkin, the epitome of engineering ignorance. ...Jim Thompson

do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

You've killfiled John S, so why don't you killfile me? It's discrimination! It's unfair!

I do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and 100 MHz. I don't know where to start!

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

I DID provide values, you're just too ignorant to understand. Hint: Zo is the impedance at resonance. Do you know enough math to calculated the L/C/R? PSpice does >:-} ...Jim Thompson

I do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and 100 MHz. I don't know where to start!

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

It's

Gee, John L, Why would I killfile you, when you're so... so... so tauntable >:-} And a NOLA white trash village idiot. ...Jim Thompson

I do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and 100 MHz. I don't know where to start!

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

It's

You flatter yourself, old man... because nobody else will do it. You have made yourself the group buffoon.

mixers. I do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

very specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

It's

Nope. You tried to make me the buffoon, but you slipped up by loudly demonstrating your ignorance... you've earned the Ron White badge of excellence in exhibition of stupidity. ...Jim Thompson

I do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and 100 MHz. I don't know where to start!

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

When you are designing a circuit that requires tuning, most engineers should be thinking in terms of the tank's resonant frequency, its impedance at resonance, and its Q... I do. So, during the development of that model airplane RC chip (I mentioned it here before) I whipped up a template for a tank...

REFDES = TANK? TEMPLATE = L^@REFDES %pin1 %pin2 {@Zo/(6.283185*@Fo*@Q)} \n C^@REFDES %pin1 %pin2 {@Q/(6.283185*@Fo*@Zo)} \n R^@REFDES %pin1 %pin2 @Zo PART = TANK SIMULATIONONLY = Fo = 10Meg Zo = 1K Q = 10

where Fo, Zo, and Q are selectable parameters.

(Users of other Spice variants should be able to easily re-write this "template" as a subcircuit.)

I also did it for tapped tanks, both L-taps and C-taps.

Why do I have to be constantly recalculating L, C and R values, when PSpice will do it for me automatically?

I can even have PSpice list the L, C and R values in the parts list, if I want.

The only reason I can see for Larkin's consternation is that the method went right over his head, and sycophant John S "proudly" announced, "Well, Jim didn't furnish L and C values".

Start acting like engineers, folks. Instead of trying to label me the "buffoon", you should be asking yourself why didn't you understand it, or is it that your only intent is to be assholes? I think the latter. ...Jim Thompson

"John Devereux"

And how about a part number or two for the JFET ?

... Phil

mixers. I do not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say

following:

IMD, etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

very specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

find any S parameter files for the devices I'm interested in using.

wave.

The only thing I did not understand was your reference to Zo. I've never seen that applied to a tank circuit.

And why are you being so discourteous to me? I have been polite. I have not attacked you. I have not intentionally insulted you. I never referred to you as a "buffoon".

No. They started in the late 1970's.

-- Jeff Liebermann snipped-for-privacy@cruzio.com

Does it? Hey, I was (even more) ignorant then, that was a scan I did in

Can't remember for sure, it was 20 years ago. J310 I think?

"John Devereux"

VHF TV broadcast transmissions extend to over 250MHz.

But UK television has been on UHF only for a long time now.

... Phil

If it crystallizes it may Pierce you. It would also severely limit the tuning range.

?-)

discrimination! It's

have made

No Larkin that is you.

?-(

not want to use Crystals, Frequency Synthesis, DDS, etc. Let's say 2 MHz and 100 MHz. I don't know where to start!

following:

etc. No circuits to build. Just demo circuits for illustration, sometimes only the small signal model.

specific components. Very little on how to generalize things into different frequencies. (The ARRL handbook 2010 and Experimental Methods fall under this).

any S parameter files for the devices I'm interested in using.

The 1648 is a nice IC! Does this structure have any advantage compared to the cross-coupled pair with the tank across the collectors -which I have used quite successfully to make quick-and-dirty oscillators from 1 to several GHz?

| | R R | |

------*------- Re | GND

There are variants of this, most notably with L/2 instead of each of the R and the cap between collectors. They seem to be very popular in integrated VCOs nowadays...

Pere