![]() Dependent of the antenna type there are several possibilities to obtain optimum impedance at the correct frequency. If the resonance frequency is too high, the antenna length should be increased.Įven if the antenna resonates at the correct frequency it might not be well matched to the correct impedance. Thus if the resonance frequency is to low, the antenna should be made shorter. Ideally the frequency which gives least reflection should be in the middle of the frequency band of interest. For resonant antennas the main factor is the length. There are several ways to tune an antenna to achieve better performance. especially built-in antennas, such as spring type, chip type, pcb or fpc type antenna. To be precise, all antennas need impedance matching when applied to products. Antenna Matching is very important work in client side, not only antenna supplier side.
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