ddt694
Full Member level 3
Dear friends,
Please help me choose a quadrature modulator and a quadrature demodulator (IQ modulator, IQ demodulator). Their RF Lo frequency is
70MHz or 140MHz, baseband signal bandwidth should be about 10MHz.
Many companies have IQ modulator or demodulator For example, Mini-circuits' IQ modulator MIQA-70M and Analog Device's IQ demodulator AD8347.
Unfortunatly, MIQA-70M's baseband bandwidth is too narrow (DC-5MHz) and price is too expensive(about 40$ per piece!). AD8347 is not expensive, but it's RF frequency is 0.8-2.7GHz, far above my 70MHz and 140MHz.
thanks for your help!
regards
ddt694
Please help me choose a quadrature modulator and a quadrature demodulator (IQ modulator, IQ demodulator). Their RF Lo frequency is
70MHz or 140MHz, baseband signal bandwidth should be about 10MHz.
Many companies have IQ modulator or demodulator For example, Mini-circuits' IQ modulator MIQA-70M and Analog Device's IQ demodulator AD8347.
Unfortunatly, MIQA-70M's baseband bandwidth is too narrow (DC-5MHz) and price is too expensive(about 40$ per piece!). AD8347 is not expensive, but it's RF frequency is 0.8-2.7GHz, far above my 70MHz and 140MHz.
thanks for your help!
regards
ddt694