Abstract:A novel low-cost dual-polarized radiating element is presented for C-band multifunctional dual-polarized radar system: a compact three-layer configuration with reduced cross-polarized isolation enables frequency reuse using polarization diversity. Promising attributes are demonstrated with measured return loss of better than −10 dB from 4.8 to 5.2 GHz. The measured gain is larger than 6 dBi at 5 GHz, along with 29 dB cross-polarization discrimination, scanning capability and regular radiation patterns.
A compact two-way planar Wilkinson power divider with dimensions of over 40 mm × 28 mm × 0.8 mm operating at L-band is presented. By using two comb-like symmetric defected ground structures (DGS), the divider is reduced by about 50% in size. The measured results demonstrate that the insertion loss is less than 3.2 dB, the input return loss is smaller than −15 dB from 1.3 to 1.7 GHz while the isolation is larger than 20 dB.
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