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OK, firstly have you verified that you are getting the correct port impedance (50 ohm I assume) - this can be done by doing a ports only solution and then will tell you if the ports are setup correctly - this is the first thing to check
Re: RADAR is completely new for me. Which book should I read
For automotive radar you are probably looking at FMCW types, I have found a book by Scheer & Kurtz called "Coherent Radar Performance Estimation" excellent as a practical textbook
Re: RF filter?
The reason is simply due to the resistivity of Si substrate - this means that very high Q's cannot be achieved
SAW filters are normally produced on ceramic substrates enabling high Q's
Firstly, you need to choose a device with the power you require over the frequency range (try Toshiba, Fujitsu)
Use the Cripps method to design the output match point (see Cripps book)
In order to achive the bandwidth (2 octaves - quite large) you will need to have a broadband match at the...
For wideband matching you need to use multi-section matching networks and not just a single stub - the wider the bandwidth, the more sections you need
Peter Abrie's book Design of RF and Microwave Amplifiers and Oscillators covers the topic of wideband matching very well
Re: Bandpass anyone?
Bandpass filters are filters which only allow transmission of a certain band of frequencies and reject all others (in theory !) above and below
Usually resonators are used to achieve bandpass filters, that is elements that have a very frequency selective response
If you...
Re: RF AMplifier
In order to improve the transmission of your system you need to either
1) Increase your transmit power so that the signal will be detectable at a further distance
or
2) improve your receiver noise floor so that it can detect weaker signals
This is covered in any...
Re: RF filter?
Hi,
Inductors and capacitors in CMOS can be used to construct a filter with a Q of the order of 10 (maybe a little more) - this is mainly down to the Si substrate and cannot be overcome
If I understand you correctly and you require a filter with a Q of 10,000 then CMOS is not...
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