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Re: About LTCC
LTCC is a good approach for a front end when cost and/or complexity are driving the design. It has decent thermal charateristics, although electrically, due to the roughness of the metalization, the losses can be a little higher than soft substrate.
Reasons to use LTCC:
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They do, but, aren't they are abandoning their scripting language for VB in v9? As someone who typically uses it in the Unix environment, this was of particular interest...
Re: finite substrate
Actually, if you are using periodic boundaries, HFSS is very accurate. The only problem is that for a full radiation pattern you need to do a solve for every scan point and frequency. This method, though tedious, was verified by measurement for a notch element in both Co...
I did a Q-Band patch design in a standard 30deg WG simulator a few years back (actually it was the HP HFSS w/ Acad13 interface) and the measured data was extremely consistant with the simulation...
One HFSS Advantage is...
The master/slave boundaries do not need to be parallel to the xz and yz axes. We did a comparison of of the CST and HFSS using a probe fed cavity backed patch. A triangular lattice can be modeled in HFSS with 3 sets of master/slave pairs. To my knowledge, which is...
6 oz copper duroid
Did you take into account the possibility of variation in adhesive thickness? Also, what exactly are you testing? Are you testing the vertical transitions and the filter or are you deembedding using a TRL cal? If you are not doing a TRL cal, you need to optimize the...
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