Compact Differentially Fed Inverted Microstrip Circular Patch With an Integrated Coupler

This letter presents a compact design of an inverted microstrip circular patch differentially fed by an integrated coupler. The compact design offers symmetric copolarized radiation in both principal planes and low cross-polarized radiation in the H-plane. A relatively high gain of 8.3 dBi is experimentally demonstrated. Moreover, the integrated unilayer coupler feed shares a common ground plane with the inverted patch providing a compact design.

[1]  Jawad Y. Siddiqui,et al.  New CAD model to calculate the resonant frequency of inverted microstrip circular patch antennas , 2002 .

[2]  Peter Gardner,et al.  Differential aperture coupling technique for passive and active integrated antenna design , 2007 .

[3]  Tatsuo Itoh,et al.  Integrated-antenna push-pull power amplifiers , 1999 .

[4]  K. M. Chan,et al.  Active Integrated Antenna Design Using a Contact-Less, Proximity Coupled, Differentially Fed Technique , 2007, IEEE Transactions on Antennas and Propagation.

[5]  A. Ittipiboon,et al.  Suppression of unwanted probe radiation in wideband probe-fed microstrip patches , 1999 .

[6]  Yue Ping Zhang.  Design and Experiment on Differentially-Driven Microstrip Antennas , 2007, IEEE Transactions on Antennas and Propagation.

[7]  Rod Waterhouse,et al.  Small printed antennas with low cross-polarised fields , 1997 .

[8]  Liping Han,et al.  Design of Compact Differential Dual-Frequency Antenna With Stacked Patches , 2010, IEEE Transactions on Antennas and Propagation.

[9]  Y.P. Zhang,et al.  0.18-/spl mu/m CMOS push-pull power amplifier with antenna in IC package , 2004, IEEE Microwave and Wireless Components Letters.

[10]  A. Sharaiha,et al.  A Compact Wide-Band Rat-Race Hybrid Using Microstrip Lines , 2009, IEEE Microwave and Wireless Components Letters.

[11]  Xiu Yin Zhang,et al.  A Novel Differential-Fed Patch Antenna , 2006, IEEE Antennas and Wireless Propagation Letters.

[12]  Quan Xue,et al.  Broadband Patch Antenna With a Folded Plate Pair as a Differential Feeding Scheme , 2007, IEEE Transactions on Antennas and Propagation.

[13]  Ingo Wolff,et al.  Rectangular and Circular Microstrip Disk Capacitors and Resonators , 1974 .

[14]  W. Bachtold,et al.  A differential active patch antenna element for array applications , 2003, IEEE Microwave and Wireless Components Letters.

[15]  S. Sharma,et al.  Investigations on Wideband Cylindrical Dielectric Resonator Antenna With Directive Radiation Patterns and Low Cross Polarization , 2010, IEEE Transactions on Antennas and Propagation.

[16]  Y.P. Zhang,et al.  Theory and analysis of differentially-driven microstrip antennas , 2006, IEEE Transactions on Antennas and Propagation.

[17]  Kwok Wa Leung,et al.  On the Differentially Fed Rectangular Dielectric Resonator Antenna , 2008, IEEE Transactions on Antennas and Propagation.