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Versatile wideband impedance matching circuit based on current conveyors

Versatile wideband impedance matching circuit based on current conveyors

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The first active impedance matching circuit for RF applications is introduced. It adapts arbitrary output impedances to values between 50 and 250 Ω, from 0 to 5 GHz, and occupies only 0.005 mm2 in 0.35 µm SiGe-BiCMOS. It is vastly superior to traditional passive-element solutions by being: the first flexible matching circuit to adapt any impedance to any desired value; the smallest matching circuit ever; and a rare example of wideband matching. Application to a low-noise amplifier proves the potential of the new circuit.

References

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    2. 2)
      • K.S. Ang . A broad quarter-wavelength impedance transformer with three reflection zeros within passband. IEEE Trans. Microw. Theory Tech. , 12 , 2640 - 2643
    3. 3)
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