Categories
Statistics
Flag Counter
Since 08.08.2014
Counts only, if "DNT = disabled".

Your IP is 3.226.72.194
ec2-3-226-72-194.compute-1.a
Info
Valid HTML 4.01 Transitional Creative Commons Lizenzvertrag
rss
เราจะทำแบบวิศวกรผู้ยิ่งใหญ่
We love the King
22. July 2024
Your valuable opinion :
3.5 stars

Avg. 3.73 from 11 votes.



LumpedBalunCalculator.php    5346 Bytes    21-12-2021 17:42:43


Lumped Element Balun Calculator


With an example of the NE/SA602/612




Lumped Element Balun



R1 [Ω]     Unbalanced port
R2 [Ω]     Balanced port
Frequency [MHz]
C1, C2 [pF]
L1, L2 [nH]
 





✈ Example : NE/SA602 • NE/SA612





From the datasheet, we know that each output (Pin 4,5) has an impedance of 1.5 kΩ. As we use both, this adds up to 3 kΩ. Our Bandpassfilter wants to see 330 Ω for optimal performance @ 10.7 MHz.

Keying those values into the form above, we get C1, C2 = 14.95 pF and L1, L2 = 14'799 nH. Using the closest E12 values, we would therefore use 2 x 15 pF and 2 x 15 µH.

As we do need some dc-blocking, two additional Capaitors of approx. 47 nF shall also be added at the output of the IC.


The simulated Ciruit ...
... shows good match.




✈ Share your thoughts



The webmaster does not read these comments regularely. Urgent questions should be send via email. Ads or links to completely uncorrelated things will be removed.


Your Browser says that you allow tracking. Mayst we suggest that you check that DNT thing ?

 
t1 = 6584 d

t2 = 169 ms

★ ★ ★  Copyright © 2006 - 2024 by changpuak.ch  ★ ★ ★

Impressum