Miniaturized Dual-Band Half-Mode Vivaldi Antenna

A dual-band antenna with small size is proposed in this communication. The proposed antenna consists of half a palm- shape-edge radiating arm, two rows of metallized vias and a pair of rhombus patches. Based on mirror image theory, the induced current on the electric wall in the antenna system can be equivalent to the current in the symmetric position of the radiation arm. The half-mode (HM) Vivaldi structure can effectively reduce the antenna size. Rhombus patches are introduced to enhance the radiation performance of the dielectric notch radiator. The dual- band operation of the antenna is obtained by loading with dumbbell defect-ground-structure (DB-DGS) resonators under the microstrip line. Rogers RO 4003 is used as the dielectric substrate for this antenna, and the entire size is only 20 × 36mm2. For the simulation results, the operating frequencies of the antenna are 7.03GHz to 10.83GHz and 22.95GHz to 29.89GHz respectively. The proposed antenna achieves the gains of 4.5 dB and 8 dB at low frequency and high frequency, respectively. The overall performance of the antenna is good.

[1]  Jian Ren,et al.  Dual-Band Antenna With Large Frequency Ratio Based on Dual-Mode Transmission Line , 2021, IEEE Antennas and Wireless Propagation Letters.

[2]  Shuai Zhang,et al.  A Dual-Band Shared-Aperture Antenna With Wide-Angle Scanning Capability for Mobile System Applications , 2021, IEEE Transactions on Vehicular Technology.

[3]  Shuai Zhang,et al.  Dual-Band Structure Reused Antenna Based on Quasi-Elliptic Bandpass Frequency Selective Surface for 5G Application , 2020, IEEE Transactions on Antennas and Propagation.

[4]  Zhi Ning Chen,et al.  Shared-Surface Dual-Band Antenna for 5G Applications , 2020, IEEE Transactions on Antennas and Propagation.

[5]  S. Gao,et al.  A novel miniaturized antipodal Vivaldi antenna with high gain , 2019, Microwave and Optical Technology Letters.

[6]  L. Feng,et al.  Wideband Dual-Frequency Antenna With Large Frequency Ratio , 2019, IEEE Transactions on Antennas and Propagation.

[7]  Teng Li,et al.  Metasurface-Based Shared-Aperture 5G ${S}$ -/ ${K}$ -Band Antenna Using Characteristic Mode Analysis , 2018, IEEE Transactions on Antennas and Propagation.

[8]  H. Wong,et al.  A Flexible Dual-Band Antenna With Large Frequency Ratio and Different Radiation Properties Over the Two Bands , 2018, IEEE Transactions on Antennas and Propagation.

[9]  L. Feng,et al.  Dual-Fed Hollow Dielectric Antenna for Dual-Frequency Operation With Large Frequency Ratio , 2017, IEEE Transactions on Antennas and Propagation.

[10]  Abdel Fattah Sheta,et al.  Compact bandstop filter using defected ground structure (DGS) , 2011, 2011 Saudi International Electronics, Communications and Photonics Conference (SIECPC).

[11]  P. Ferrari,et al.  Tunable Bandstop Defected Ground Structure Resonator Using Reconfigurable Dumbbell-Shaped Coplanar Waveguide , 2006, IEEE Transactions on Microwave Theory and Techniques.

[12]  Francisco Medina,et al.  On the Modeling of Microstrip Lines Loaded With Dumbbell Defect-Ground-Structure (DB-DGS) and Folded DB-DGS Resonators , 2021, IEEE Access.

[13]  Sumit Kumar,et al.  A Survey of Performance Enhancement Techniques of Antipodal Vivaldi Antenna , 2020, IEEE Access.

[14]  Chi Hou Chan,et al.  Multiband Antenna for WiFi and WiGig Communications , 2016, IEEE Antennas and Wireless Propagation Letters.

[15]  K. See,et al.  Integration of Dual-Band Monopole and Microstrip Grid Array for Single-Chip Tri-Band Application , 2013, IEEE Transactions on Antennas and Propagation.