SimRF-->Circuit Envelope-->Directional Coupler Model - INCORRECT IMPLEMENTATION

3 ビュー (過去 30 日間)
cfy30
cfy30 2016 年 8 月 29 日
回答済み: Joe Storniolo 2018 年 7 月 3 日
I am experimenting the "Ideal Couplers - Directional coupler" under the SimRF->Circuit Envelope->Junctions toolbox. The parameters I play with are the Insertion loss and Coupling. I fixed the Coupling to 25dB and the insertion loss cannot go below 0.51dB else an error message pops up saying " Expected passive test for Directional coupler to be nonzero.". That doesn't make sense. (10^(-coupling/20))^2 + (10^(-insertion loss/20))^2 = 1. With 25dB coupling, the insertion loss can go to 0.014dB. I suspect the implementation is wrong. Anyone has any idea?
Thanks, cfy30

サインインしてこの質問に回答する。

回答 (2 件)

Andreas Loeffler
Andreas Loeffler 2016 年 11 月 3 日
I can confirm that issue. I am using 2016a. I guess one has to construct its own directional coupler with S parameters.
Joe Storniolo
Joe Storniolo 2018 年 7 月 3 日
Having the same problem, and I'm using 2018a.

カテゴリ

Help Center および File Exchange で Simulink についてさらに検索

タグ

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by