- #1
Fovakis
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I&Q Modulator questions...
Hi. I cannot understand the I&Q Modulator...
I am reading this one of mini circuits..http://217.34.103.131/pdfs/ZFMIQ-10M.pdf
It has I and Q inputs...and it write (DC to 2MHz) freq for the input..
1)is the I and Q analog signals or bit stream ?If is a bit stream how can it has 2MHz frequency?
2)The I&Q Modulators as i understand make QPSK/8QAM/16QAM etc modulation..so the message I and Q must be bit streams (symbols basic) and carrier analog signal..right?
3)The output of a I&Q Modulator is exactly like the output of a AM-Modulator (?)...USB, LSB , carrier...what is going on here?
George
Hi. I cannot understand the I&Q Modulator...
I am reading this one of mini circuits..http://217.34.103.131/pdfs/ZFMIQ-10M.pdf
It has I and Q inputs...and it write (DC to 2MHz) freq for the input..
1)is the I and Q analog signals or bit stream ?If is a bit stream how can it has 2MHz frequency?
2)The I&Q Modulators as i understand make QPSK/8QAM/16QAM etc modulation..so the message I and Q must be bit streams (symbols basic) and carrier analog signal..right?
3)The output of a I&Q Modulator is exactly like the output of a AM-Modulator (?)...USB, LSB , carrier...what is going on here?
George