High efficiency diode doubler with conjugate- matched antennas

  title={High efficiency diode doubler with conjugate- matched antennas},
  author={S. M. Presas and T. M. Weller and S. Silverman and Michael Rakijas},
  journal={2007 European Microwave Conference},
A high efficiency harmonic re-radiator, consisting of a diode doubler and conjugate-matched receive and transmit antennas, is described. The device operates by receiving a 1.3 GHz signal and re-radiating a 2.6 GHz signal. The doubler design is optimized for low input power operation and provides 1% conversion efficiency at -30 dBm input. It is shown that utilizing proper harmonic terminations in the computer simulations is critical for accurate performance prediction. 
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