Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Hi everyone,
Our crowdfunding campaign ERASynth is currently live on CrowdSupply. We would like to get your feedback. Your valuable comments and ideas will be very helpful since we are still in the process of taping out last revision of the board.
Thanks in advance.
0dBc
Hi Delta,
Thanks for the reply. Since you already have experience with IMAs, designing RF/MW PCBs won't be a big challenge for you. I strongly recommend you to read the "Building a Microwave Frequency Synthesizer" article series by Chenakin. The articles are available online at...
Hi all,
This question comes to all of the microwave gurus of edaboard. I would like to learn practical design details of integrated microwave assemblies (IMA). Where should I start? So far I have been designing RF PCBs with standard SMT components upto ~13 GHz using RO4000 series substrates. I...
Hi guys,
What sample rate would you use if you were to digitize a 40MHz bandwidth signal centered at 70MHz? Availabe ADC supports rates upto 400MSPS. What sample rate makes the operations in the digital domain simpler?
Thanks in advance.
As chuckey pointed out there are problems with your frequency plan. The general rule of thumb is that the IF frequency should be above the highest frequency to be received by at least 35%. In your case this happens to be 860*1.35=1161 MHz.
For C-band, you could use a ceramic resonator oscillator (CRO) followed by a frequency doubler. RFMD has some of best CROs on the market. But their frequency range is limited to 4 GHz. For best phase noise try to choose the most narrow-band CRO with the lowest Kv. Here is product catalog...
Why do you need a low phase noise amplifier? What is your target phase noise spec? Hittite has a broadband low phase noise amplifier: https://www.hittite.com/content/documents/data_sheet/hmc606lc5.pdf
sensitivity of an SA is similar to sensitivity of a normal receiver: -174 + 10*LOG(RBW) + NF + SNR
here NF is the noise figure (in dB) of the spectrum analyzer at the given setting. Since SA is a general purpose receiver the SNR term is dropped and the rest is called DANL. As SunnySkyGuy said...
As the name implies reference spurs are caused by the reference signal itself. Some portion of the reference signal leaks to the VCO input and modulates the VCO's control voltage. If you want to minimize the reference feedthru, you can add some extra RC filtering next to your loop filter, not to...
You are absolutely right. Agilent E5052B + E5053A system is above 150k USD. I don't know the price of FSUP26 since there is no pricing information available on R&S's website. I am guessing it would be cheaper than the Agilent's system since it is single box instrument (doesn't require an...
Thanks E-design. Here is Dr. Rohde's post from the thread link you provided:
He also has a paper (which I found after starting this thread) that compares different phase noise measurement systems in April issue of the MWJ:
**broken link removed**
Hi everyone,
We are planning to buy a signal source analyzer to measure phase noise upto 20 GHz for lab usage. Agilent E5052B + E5053A combination seems to the most common solution. R&S FSUP26 is another solution. Can anybody recommend one over the other in terms of performance?
Not all downconverters have an LNA at the front, especially the ones that have a wide input range. Most probably Miteq's downconverter has an input step attenuator followed by a filter followed by mixer/LNA or LNA/mixer. So 16 dB isn't really that high considering the insertion loss caused by...
Hi everybody,
I am not very familiar with video standards. I need to know if I can demodulate an FM modulated video signal with TDA9886. On the datasheet of TDA9886, it claims that it is a demodulator for FM TV. However, the block diagram given in the datasheet looks more like an AM demodulator...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
