I'm not interested in the very exact graphs for this very exact sample. There are dozens of similar (but not identical) PCB-baluns around.Probably doesn't make much of a difference, but I looks like HFSS model geometry is slightly offset from actual photo (see overlay in your link above).....
Loss in this balun is of 3 kinds:What is Insertion Loss vs Frequency???? For completeness, can you measure (or find a measurement and/or spec) for the actual Balun???
Produce your own. This is novel technique I've never heard before, it seems interesting to me, so I posted it in this balun topic.How did we get from PC Board baluns to an LNA produced in Moscow?
in 1st post. I need to know wideband properties of PCB baluns (several similar types are sold here for $0.6-$1). I've heard controversial claims from local TV/SAT enthusiasts that these PCB baluns work better than ferrite @ 700..860 MHz, but worse at 470-650 MHz. I've also seen many type of DIY baluns at different forums (both PCB and bifilar-wire air type) with claims that they are better than those selling for $0.6.Where is the evaluation?
The link to http://www.avsforum.com/attachments/15540 is bad.Updated link to Johnrmckee's measurements for low-loss Philips Outdoor Ferrite Balun: [Unfortunately no p/n or photo]
UHF: 0.5 to 0.9 dB (470-698 MHz)
Hi-VHF: Under 0.6 dB
Lo-VHF: Under 0.7 dB
Note that Philips Outdoor Ferrite Balun and A-D's PCB Balun had about the SAME LOSS across the entire [N.A.] UHF Band....and that MOST Ferrite Baluns are significantly worse, esp on hig