A novel waveguide-fed rectangular dielectric resonator antenna in low temperature co-fired ceramic (LTCC) technology has been designed and fabricated at 24 GHz. To connect the antenna to the rest of the circuit a staircase microstrip to waveguide transition is introduced. Simulated and experimental results for input reflection coefficient are in excellent agreement.
Roy, L., Berthereau, N., Hojjat, N., Kautio, K., & Panesaar, H. (2006). Dielectric resonator antenna with microstrip-waveguide transition in LTCC. Electronics Letters, 42(19), 1078-1079. https://doi.org/10.1049/el:20061501