Antennas & phased arrays

Designing, fabricating, and validating ultra-wideband, wide-scan, and dual-polarized arrays through to TRL-9 for demanding radar and electronic-warfare systems.

I have designed antennas and phased arrays end to end — from element and array architecture through fabrication, integration, and validation to TRL-9. This includes ultra-wideband, wide-scan, and dual-polarized arrays and their RF front-ends.

The work spans the full stack: radiating elements, T/R modules, packaging, and the measurement techniques needed to characterize them.

Ultra-wideband & wide-scan array design
RF front-ends, T/R modules, packaging
Design through TRL-9 validation

Related journal publications

M. Kalfa and V. B. Ertürk, "Analysis of slotted sectoral waveguide arrays with multilayered radomes," IEEE Trans. Antennas Propag., vol. 64, pp. 800–805, 2016.
M. S. Akyuz, V. B. Ertürk, and M. Kalfa, "Closed-form Green's function representations for mutual coupling calculations between apertures on a PEC circular cylinder covered with dielectric layers," IEEE Trans. Antennas Propag., vol. 59, pp. 3094–3098, 2011.

Related conference proceedings

B. Kılıç, M. Kalfa, and O. Arıkan, "Prior-based grid selection algorithm for compressed sensing based direction of arrival estimation methods," in IEEE Int. Symposium on Phased Array System & Technology (ARRAY), 2019.
B. A. Yılmaz and M. Kalfa, "Wide-scanning 9:1 bandwidth dual-polarized phased array Vivaldi antenna design," in URSI National Assembly, 2016.
M. Kalfa, Ş. Karan, and V. B. Ertürk, "Analysis of cylindrically conformal antennas using closed-form Green's function representations," in 9th European Conference on Antennas and Propagation (EuCAP), 2015.
M. Kalfa and V. B. Ertürk, "Analysis of slotted sectoral waveguide array antennas with multilayer radomes and nonzero metal thickness," in USNC-URSI Radio Science Meeting (with AP-S Symposium), 2015.
M. Kalfa and V. B. Ertürk, "Design and analysis of slotted sectoral waveguide array antennas embedded in cylindrically stratified media," in USNC-URSI Radio Science Meeting (with AP-S Symposium), 2014.
M. Kalfa and V. B. Ertürk, "Analysis of slotted sectoral waveguide antenna arrays embedded in cylindrically stratified media," in URSI National Assembly, 2014. Best Paper Award
M. Kalfa and E. Halavut, "A fast method for obtaining active S-parameters in large uniform phased array antennas," in IEEE Int. Symposium on Phased Array Systems and Technology, 2013.
M. Kalfa and V. B. Ertürk, "Derivation of Green's function representations for the analysis of sectoral waveguides embedded in cylindrically stratified media," in USNC-URSI Radio Science Meeting (with AP-S Symposium), 2013.
M. Kalfa and V. B. Ertürk, "Analysis of slotted sectoral waveguides embedded in cylindrically stratified media using closed-form Green's function representations," in USNC-URSI Radio Science Meeting (with AP-S Symposium), 2013.

Related patents

M. Kalfa, E. Halavut, and H. H. Canbey, "Antenna array having ultra-wide band and high polarization purity," US10879625B2, TR201720526A2, PL235589B1, WO2019117839A1, 2020.