very difficult calculation complex symmetrical source to asymmetrical 50 Ohm...

[Leo Baumann]

circuit:
www.leobaumann.de/Balun2.png

basics of the calculations:
www.leobaumann.de/Balun0.pdf

calculation with Mathematica:
www.leobaumann.de/Balun1.pdf

Pi-filter with matchning to 50 Ohm:
www.leobaumann.de/Balun2.pdf

Grüße

 

[John Larkin]

On Sat, 13 May 2023 23:36:10 +0200, Leo Baumann <ib@leobaumann.de>
wrote:

circuit:
www.leobaumann.de/Balun2.png

basics of the calculations:
www.leobaumann.de/Balun0.pdf

calculation with Mathematica:
www.leobaumann.de/Balun1.pdf

Pi-filter with matchning to 50 Ohm:
www.leobaumann.de/Balun2.pdf

Grüße

Why not use a regular balun?

 

[Leo Baumann]

Am 14.05.2023 um 03:10 schrieb John Larkin:

On Sat, 13 May 2023 23:36:10 +0200, Leo Baumann <ib@leobaumann.de
wrote:

circuit:
www.leobaumann.de/Balun2.png

basics of the calculations:
www.leobaumann.de/Balun0.pdf

calculation with Mathematica:
www.leobaumann.de/Balun1.pdf

Pi-filter with matchning to 50 Ohm:
www.leobaumann.de/Balun2.pdf

Grüße

Why not use a regular balun?

The not calculated circuit was given in a datasheet. The complex,
symmetrical source was the antenna-output of an IC to an asymmetrical
antenna.

They has challenged the datasheet readers with this.

Some German engineers despaired of this and came to me with it.

Very funny - lol

Regards

 

[Cursitor Doom]

On Sun, 14 May 2023 03:21:13 +0200, Leo Baumann <ib@leobaumann.de>
wrote:

Am 14.05.2023 um 03:10 schrieb John Larkin:
On Sat, 13 May 2023 23:36:10 +0200, Leo Baumann <ib@leobaumann.de
wrote:

circuit:
www.leobaumann.de/Balun2.png

basics of the calculations:
www.leobaumann.de/Balun0.pdf

calculation with Mathematica:
www.leobaumann.de/Balun1.pdf

Pi-filter with matchning to 50 Ohm:
www.leobaumann.de/Balun2.pdf

Grüße

Why not use a regular balun?

The not calculated circuit was given in a datasheet. The complex,
symmetrical source was the antenna-output of an IC to an asymmetrical
antenna.

They has challenged the datasheet readers with this.

Some German engineers despaired of this and came to me with it.

Very funny - lol

Regards

https://en.wikipedia.org/wiki/Smith_chart

 

[Leo Baumann]

Am 14.05.2023 um 10:52 schrieb Cursitor Doom:

On Sun, 14 May 2023 03:21:13 +0200, Leo Baumann <ib@leobaumann.de
wrote:

Am 14.05.2023 um 03:10 schrieb John Larkin:
On Sat, 13 May 2023 23:36:10 +0200, Leo Baumann <ib@leobaumann.de
wrote:

circuit:
www.leobaumann.de/Balun2.png

basics of the calculations:
www.leobaumann.de/Balun0.pdf

calculation with Mathematica:
www.leobaumann.de/Balun1.pdf

Pi-filter with matchning to 50 Ohm:
www.leobaumann.de/Balun2.pdf

Grüße

Why not use a regular balun?

The not calculated circuit was given in a datasheet. The complex,
symmetrical source was the antenna-output of an IC to an asymmetrical
antenna.

They has challenged the datasheet readers with this.

Some German engineers despaired of this and came to me with it.

Very funny - lol

Regards

https://en.wikipedia.org/wiki/Smith_chart

exact calculation was required as a challenge

 

[Fred Bloggs]

On Saturday, May 13, 2023 at 9:22:29 PM UTC-4, Leo Baumann wrote:

Am 14.05.2023 um 03:10 schrieb John Larkin:
On Sat, 13 May 2023 23:36:10 +0200, Leo Baumann <i...@leobaumann.de
wrote:

circuit:
www.leobaumann.de/Balun2.png

basics of the calculations:
www.leobaumann.de/Balun0.pdf

calculation with Mathematica:
www.leobaumann.de/Balun1.pdf

Pi-filter with matchning to 50 Ohm:
www.leobaumann.de/Balun2.pdf

Grüße

Why not use a regular balun?
The not calculated circuit was given in a datasheet. The complex,
symmetrical source was the antenna-output of an IC to an asymmetrical
antenna.

They has challenged the datasheet readers with this.

Some German engineers despaired of this and came to me with it.

Very funny - lol

Can you link us to the datasheet?

MMIC push-pull drives are well understood and in wide use:

https://www.researchgate.net/publication/346148952_Analytical_Solution_of_Amplifier-Antenna_System\'s_Impedance_Matching_Requirement_for_Reliable_Microwave_Transmitter

Regards