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We present a broadband distributed power amplifier topology capable of providing efficiencies approaching 50%. Unlike tapered-drain-line power TWAs, high-Z/sub 0/ lines are not required, greatly improving realizability in MMIC implementation. An experimental hybrid achieved bandwidth 25% of f/sub /spl tau// with /spl sim/15 dB gain and 30/spl plusmn/5% power-added-efficiency.
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Krishnamurthy et al. (2003) studied this question.
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