![]() In-situ RF lab measureme nts, along with tuning work, have to be consid ered for determ ining the proper final values. Above a few tens of megahertz, theoretical calculations and simulations are often insufficient. The matching task is required for a proper transfer of signal and energy from a "source" to a "load." At high radio frequencies, the spurious elements (like wire inductances, interlayer capacitances, and conductor resistances) have a signif icant yet unpredic table impact on the matching network. ![]() Typically these incl ude the antenn a to the low-noise amplifier (LNA), power- ampli fier output (RFOU T) to the antenna, and LNA/VCO output to mixer inputs. One is the need to match the different impedances of the interconnected blocks. When dealing with the practical implementation of RF applications, there are always some nightmarish tasks. ![]()
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