Re: RFIC and 50 Ohm
Wow! This thread has some aspects that are a little bizzare. Think a little bit, guys. It is incorrect to say that because the source and load are close to each other in terms of wavelengths allows you to ignore impedance matching. For example....
Take a 1.5 volt DC battery (wavelength = infinity). If it's internal resistance is, say 10 Ohms, what resistor do you connect to it to get maximum power out of the battery and into your resistor? That's right, 10 Ohms!
If you have an FET power amplifier and its input impedance is 1 Ohm, you better match to 1 Ohm on the driver amp output if you want to get maximum power output. Watch those wirebonds! Really close distance between source and load does not matter. You still have to impedance match.
If optimum power transfer is not so important, then you can worry less about impedance matching. But keep in mind, if you do not have a good match, voltages (i.e., VSWR) can get quite high, even when << wavelength between source and load.