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For the switching mode PA, I don't think conjugate match is a must, the required load impedance is determined by the output power and Vdd. This system is working in 2.4G ISM band, I don't know if this network Q is already too high. Thanks for your reply!
Thanks for your thoughts. I've found some papers about codesign of PA and antenna, but they're high output power (~20dBm), which requires a small load impedance.
I'm trying to design a ultra low power PA, which is the opposite requiring a high impedance..
I've heard of Fano Limit, but it seems to me this Zl doesn't have a extremely high Q. I just want to cover 2.4G ISM band.
This antenna is supposed to be driven by a switching mode PA. I suppose we can bondwire the chip on PCB very close to the MN(if needed) and antenna and properly account for...
Hi everyone,
I'm trying to match an antenna to Zl = 360 - j2600Ohms at 2.4GHz. In that case matching a typical 50Ohms antenna to Zl is extremely hard because of the large negative reactance (Ceq = 25fF at 2.4GHz).
I'm considering designing a non 50-Ohm to ease the matching but not so familiar...
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