Smith Chart Help - RF Cafe Forums

RF Cafe Forums closed its virtual doors in late 2012 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2012, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. Regardless, there are still lots of great posts in the archive that ware worth looking at. Below are the old forum threads, including responses to the original posts. Here is the full original RF Cafe Forums on Archive.org

-- Amateur Radio

-- Anecdotes, Gripes, & Humor

-- Antennas

-- CAE, CAD, & Software

-- Circuits & Components

-- Employment & Interviews

-- Miscellany

-- Swap Shop

-- Systems

-- Test & Measurement

-- Webmaster


 Post subject: Smith Chart Help
Posted: Fri Jan 06, 2006 5:58 pm 
Hi,

I am self studying transmission lines and I have a question on smith chart. Consider the case when you're given reflection coefficient (tau_r), Z_not, and impedence (Z_r). You want to find reflection coefficient at any distance on transmission line, i.e., tau_d, and Z_d. I'm using
Tau(d) = (1 + Z_d)/(1 - Z_d) to find Z(d) but I don't get angle/phase correct this way. I don't understand where I am making a mistake and I would request some help on this.

Thanks,

A.M.




Posted  11/12/2012