Performance enhancement of cavity-backed UWB printed monopole antenna

The performance enhancement of ultra-wide band (UWB) printed monopole antenna for ground penetrating radar application is proposed based on a simple method using cavity. The antenna configuration named as cavity-backed UWB printed monopole antenna is similar to a waveguide transducer in which the probe used for the excitation is replaced with a UWB printed monopole antenna. The used cavity has the cross-section size of 110mm × 100mm with the depth of 75mm. Meanwhile the antenna which is used for performance enhancement is a UWB printed monopole antenna made of a 1.6mm thick FR4 epoxy dielectric substrate with the size of 72.8mm × 60mm. Some of its parameters such as reflection coefficient, gain, and radiation pattern are used as the performance indicators. After fabrication process, the experimentation is carried out by measuring characteristics of realized antenna configuration. It is found that the use of cavity could change the radiation pattern from omnidirectional to unidirectional and enhance the gain up to 6.6dBi at a certain working frequency.

[1]  A.G. Yarovoy,et al.  RC-loaded bow-tie antenna for improved pulse radiation , 2004, IEEE Transactions on Antennas and Propagation.

[2]  Ahmet Kenan Keskin,et al.  Vivaldi shaped TEM horn fed ridged horn antenna design for UWB GPR systems , 2011, 2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR).

[3]  A. Bhattacharyya.  Reply to "Comments on "Effects of ground plane and dielectric truncations on the efficiency of a printed structure"" , 1991 .

[4]  A. Munir,et al.  Characterization of 50–5000MHz UWB printed antennas with different number of arms , 2011, TENCON 2011 - 2011 IEEE Region 10 Conference.

[5]  A. Munir,et al.  Shape enhancement and size reduction of UWB printed monopole antenna , 2012, 2012 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT).

[6]  A. B. Suksmono,et al.  Input impedance adjustment on UWB antenna for SFCW-GPR application , 2008, 2008 Asia-Pacific Symposium on Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility.

[8]  Chen Guo,et al.  Design of a shielded antenna system for ground penetrating radar applications , 2009, 2009 IEEE Antennas and Propagation Society International Symposium.

[9]  James G. Maloney,et al.  A study of transient radiation from the Wu-King resistive monopole-FDTD analysis and experimental measurements , 1993 .

[10]  Jiang Tao Huang-Fu,et al.  A miniaturized printed dipole antenna with V-shaped ground For 2.45 GHz RFID readers , 2007 .

[11]  Qiang Wang,et al.  Enhanced-bandwidth PIFA with T-shaped ground plane , 2004 .

[12]  Kin-Lu Wong,et al.  Small broadband rectangular microstrip antenna with chip-resistor loading , 1997 .

[13]  Liang C. Shen,et al.  The cylindrical antenna with nonreflecting resistive loading , 1965 .

[14]  Kyutae Lim,et al.  Equivalent-Circuit Analysis of a Broadband Printed Dipole With Adjusted Integrated Balun and an Array for Base Station Applications , 2009, IEEE Transactions on Antennas and Propagation.

[15]  Achmad Munir,et al.  High gain 2.4GHz patch antenna array for rural area application , 2016, 2016 22nd Asia-Pacific Conference on Communications (APCC).