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A 50 Ω matched self-complementary antenna integrated with a four coupled-line ultra-wideband differential mode bandpass filter(BPF), a notch filter and a lowpass filter (LPF) is demonstrated. Broadside-and edge-coupled four coupled-line BPFs were found to exhibit up to 170% fractional bandwidth and to exhibit impedance trans-formation ratio of 1.2 with little bandwidth reduction. Thus, 6-stage BPFs were utilized concurrently to transform the self-complementary antenna's constant input impedance (60 π ε e -1/2 Ω ) to 50 Ω . In addition, LPFs with the BPF and notch filters with the BPF were designed and fabricated. Measured insertion losses of the total filter systems were less than 2.6dB over the Ultra-wideband(UWB) band(3.1GHz to 10.6GHz). The filters were embedded in wideband self-complementary antennas to reject the radiation over the next passband and the 5GHz wireless LAN band.

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