Matching RFIC Transmitters to Small Loop Antennas
High Frequency Electronics, Maxim Integrated Products Inc.
Most short-range RF transmitters use a small loop antenna for radiation of the signal. This article provides a review of the impedance characteris-tics of these antennas and describes methods of matching the output of the transmitter to the very low impedance of the loop antenna, with adequate rejection of the harmonics.
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