Compact Differential-Fed Planar Filtering Antennas

This paper proposes novel low-profile differential-fed planar antennas with embedded sharp frequency selectively. The antennas are compact and easy to integrate with differential devices without matching baluns. The antenna design is formulated as a topology optimization problem, where requirements on impedance bandwidth, directivity, and filtering are used as the design objectives. The optimized antennas operate over the frequency band 6.0–8.5 GHz. The antennas have reflection coefficients below −15 dB, cross-polarization levels below −42 dB, a maximum gain of 6.0 ± 0.5 dB, and a uniform directivity over more than 130° beamwidth angle in the frequency band of interest. In addition, the antennas exhibit sharp roll-off between the operational band and frequencies around the 5.8 GHz WiFi band and the 10 GHz X-band. One antenna has been fabricated with a good match between simulation and measurement results.

[1]  E. Jordan,et al.  Electromagnetic Waves and Radiating Systems , 1951 .

[2]  Raymond Crampagne,et al.  Synthesis of Certain Transmission Lines Employed in Microwave Integrated Circuits (Letters) , 1977 .

[3]  Allen Taflove,et al.  Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[4]  Krister Svanberg,et al.  A Class of Globally Convergent Optimization Methods Based on Conservative Convex Separable Approximations , 2002, SIAM J. Optim..

[5]  E. de Lera Acedo,et al.  Study and Design of a Differentially-Fed Tapered Slot Antenna Array , 2010, IEEE Transactions on Antennas and Propagation.

[6]  Jiao-Jiao Xie,et al.  A New Compact Filter-Antenna for Modern Wireless Communication Systems , 2011, IEEE Antennas and Wireless Propagation Letters.

[7]  Shyh-Jong Chung,et al.  A Compact Printed Filtering Antenna Using a Ground-Intruded Coupled Line Resonator , 2011, IEEE Transactions on Antennas and Propagation.

[8]  M. Bendsøe,et al.  Topology Optimization: "Theory, Methods, And Applications" , 2011 .

[9]  Eddie Wadbro,et al.  Topology Optimization of Metallic Antennas , 2014, IEEE Transactions on Antennas and Propagation.

[10]  Eddie Wadbro,et al.  Patch and ground plane design of microstrip antennas by material distribution topologly optimization , 2014 .

[11]  Quan Xue,et al.  Differential-Fed Patch Antenna Arrays With Low Cross Polarization and Wide Bandwidths , 2014, IEEE Antennas and Wireless Propagation Letters.

[12]  Ramana V. Grandhi,et al.  A survey of structural and multidisciplinary continuum topology optimization: post 2000 , 2014 .

[13]  Eddie Wadbro,et al.  Topology Optimization of Planar Antennas for Wideband Near-Field Coupling , 2015, IEEE Transactions on Antennas and Propagation.

[14]  Xiu Yin Zhang,et al.  High-Gain Filtering Patch Antenna Without Extra Circuit , 2015, IEEE Transactions on Antennas and Propagation.

[15]  Eddie Wadbro,et al.  Time-Domain Sensitivity Analysis for Conductivity Distribution in Maxwell's Equations , 2015 .

[16]  Niels Aage,et al.  Topology optimization of microwave waveguide filters , 2016 .

[17]  Franz Xaver Rohrl,et al.  Differential wideband interconnects for organic millimeter wave chip packages: An effort to design an all-purpose RF chip package , 2016, 2016 11th European Microwave Integrated Circuits Conference (EuMIC).

[18]  Klaudia Beich,et al.  Foundations For Microstrip Circuit Design , 2016 .

[19]  Jian Wang,et al.  Antenna Radiation Characteristics Optimization by a Hybrid Topological Method , 2017, IEEE Transactions on Antennas and Propagation.

[20]  Eddie Wadbro,et al.  Topology optimization of compact wideband coaxial-to-waveguide transitions with minimum-size control , 2018 .

[21]  Quan Xue,et al.  Design of Filtering-Radiating Patch Antennas With Tunable Radiation Nulls for High Selectivity , 2018, IEEE Transactions on Antennas and Propagation.

[22]  Robert Weigel,et al.  Microstrip-to-waveguide transition in planar form using a substrate integrated waveguide , 2018, 2018 IEEE Radio and Wireless Symposium (RWS).

[23]  Quan Xue,et al.  Filtering Antenna With High Selectivity Using Multiple Coupling Paths From Source/Load to Resonators , 2018, IEEE Transactions on Antennas and Propagation.

[24]  Lucas Polo-Lopez,et al.  Antenna Design by Means of the Fruit Fly Optimization Algorithm , 2018 .

[25]  James S. Smith,et al.  Thin-Wire Antenna Design Using a Novel Branching Scheme and Genetic Algorithm Optimization , 2019, IEEE Transactions on Antennas and Propagation.

[26]  Ahmed A. Kishk,et al.  A novel differential filtering patch antenna with high selectivity , 2019, International Journal of RF and Microwave Computer-Aided Engineering.

[27]  Robert Weigel,et al.  Design of Planar Microstrip-to-Waveguide Transitions Using Topology Optimization , 2019, 2019 IEEE Radio and Wireless Symposium (RWS).

[28]  Kwok Wa Leung,et al.  Compact Absorptive Filtering Patch Antenna , 2020, IEEE Transactions on Antennas and Propagation.