Abstract

An MMIC filter is presented which employs novel tunable active inductors, where both inductance and negative resistance can be varied. The 2 GHz filter achieved a mean insertion loss of 0.9 dB, passband ripple of /spl plusmn/0.7 dB, 3 dB bandwidth of 70 MHz and an excellent out-of-band rejection which exceeds 50 dB up to 18 GHz. >

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