Good introduction on quadrature modulation but two typing errors in the formulas:
cos(x)cos(y)=1/2[cos(x+y)]+1/2[cos(x-y)] and sin(x)sin(y)=1/2[cos(x-y)]-1/2[cos(x+y)] Thank you Alberto Erik, ON4LP --- In [email protected], "i2phd" <[EMAIL PROTECTED]> wrote: > > That is the title of an interesting article at an introductory level > that can be found here : > < > http://rfdesign.com/mag/radio_fundamentals_digital_quadrature/?cid=popular > > > > 73 Alberto I2PHD >
