Enhanced Radiation From a Horizontal Dipole Closely Placed Above a PEC Ground Plane Using a Parasitic Strip

A straight parasitic strip, closely and horizontally placed above a perfect electrical conductor ground plane, is used to greatly enhance the radiation of a horizontally positioned center-fed half-wave dipole through the phase compensation from the strip. The method is discussed and validated by both full-wave electromagnetic simulation and experiments. Using the parasitic strip, a horizontal dipole with a height of 1/20 wavelength above the ground exhibits an input resistance of 62 Ω and gain of 7.8 dBi while the dipole without the strip and a dipole with a height of a quarter wavelength above the ground realize the resistance of 5/72 Ω and the gain of 4.3/7.8 dBi across a |S11| ≤ -10-dB bandwidth of 0.6%, respectively.

[1]  F. De Flaviis,et al.  Low Profile Fully Planar Folded Dipole Antenna on a High Impedance Surface , 2012, IEEE Transactions on Antennas and Propagation.

[2]  Yu Zhang,et al.  Enhancement of Radiation Along the Ground Plane From a Horizontal Dipole Located Close to It , 2008, IEEE Antennas and Wireless Propagation Letters.

[3]  R. F. Proctor.  Input impedance of horizontal dipole aerials at low heights above the ground , 1950 .

[4]  Miloslav Capek,et al.  The Radiation $Q$-Factor of a Horizontal $\lambda/2$ Dipole Above Ground Plane , 2014, IEEE Antennas and Wireless Propagation Letters.

[5]  Best.  Improving the performance properties of a dipole element closely spaced to a PEC ground plane , 2004, IEEE Antennas and Wireless Propagation Letters.

[6]  Bing-Zhong Wang,et al.  Horizontal Dipole Located Close to Ground Plane With Bidirectional Endfire Radiation , 2014, IEEE Antennas and Wireless Propagation Letters.

[7]  Mark S. Mirotznik,et al.  A Method for Determining Optimal EBG Reflection Phase for Low Profile Dipole Antennas , 2013, IEEE Transactions on Antennas and Propagation.

[8]  Miloslav Capek,et al.  The Radiation $Q$ -Factor of a Horizontal $\lambda/2$ Dipole Above Ground Plane , 2014 .

[9]  J.T. Bernhard,et al.  Preliminary results in the development of a compound reconfigurable antenna , 2008, 2008 IEEE Antennas and Propagation Society International Symposium.

[10]  S. Best,et al.  Design of a broadband dipole in close proximity to an EBG ground plane , 2008, IEEE Antennas and Propagation Magazine.

[11]  Vasundara V. Varadan,et al.  SRR-loaded small dipole antenna with electromagnetic bandgap ground plane , 2011, 2011 IEEE International Symposium on Antennas and Propagation (APSURSI).

[12]  S.R. Best.  A novel element and feed configuration for a dipole very closely spaced to a PEC ground plane , 2004, IEEE Antennas and Propagation Society Symposium, 2004..

[13]  D. Kwon,et al.  Radiation Q of small vertically polarized dipole antennas over a ground plane , 2013, 2013 IEEE Antennas and Propagation Society International Symposium (APSURSI).