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Re: humidity sensor
thank you GSM Man, my english is so basic :cry: and didn't read the datasheet carefully
I finally got this results with (160pf to 210pf).
Re: humidity sensor
Hi friends,
i have to do a small project to measure the humidity. using the HS1101 which have this characteristics at 1% ===>C=177pf
99%====>C=183pf
my question is how to transform the variation of the capacitance to variation of tension...
Hi
i design this DBR filter and now i need to do the EM simulation with momentum, so can any one help me for this??
i upload here the response i obtain but as you can see the results dont correspond from those of the circuits simulations.
Re: filter optimization!
ok,i finnaly got it!!!
if someone is interested by the results i post them below!
my error in the design i posted above is that i don't take in acount from the effective permittivity!
filter optimization!
i need help to optimize this dbr filter!
i sythetize my DBR filter with ADS with ideal line and i post here the sheme!
after that
I transcribed the lresults by using line calc and then on new window ADS I simulated my circuit with the acquired length, and as you can see...
ok i tried what you suggested to me and here i upload the results , so what do you think guys about this results in compare with the first ones!
S(1,1) at the upper freq=-13.54 db
S(4,1) at the upper freq=-13.00 db
are this results good?
because i read somewhere that we must always have S(1,1)...
i design this branchline coupler as you see in this pdf but i'd like to optimize it!!
so can someone help me?
the characteristics of my coupler:
the upper freq=2.17ghz
the low freq=1.92ghz
freq design f0=2.045ghz
C(coupling coeff)=3db
Hi everybody
need help to find documentation about DBR filters?
if someone had this
“ Design Techniques for Dual-passband Filters, ” IEEE Transactions on Microwave
Techniques, Vol. 53, No. 11, November 2005."
or this:
IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 9...
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