sensors lab, Prof. K.N. Salama and Prof. A. Shamim led a team of KAUST masters students Farhan Abdul Ghaffar and Muhammad Umair Khalid to develop an aperture-coupled patch antenna array SoP realized in a mixed LTCC medium of low and high dielectric. For first time, a 24-GHz mixed LTCC SoP comprising an array of fractal antennas was integrated with a grooved Fresnel lens. The mixed tape system allows the antenna to be realized in a relatively lower dielectric constant LTCC tape system, and the lens to be realized in a high dielectric constant tape for size reduction. The lens not only enhances the array gain, but also adds to the robustness of the design by providing protection against harsh conditions such as those encountered in automotive radars. The miniaturized module can easily fit into car bumpers or side mirrors, etc., for automotive radar applications such as blind-spot detection.
The design's compactness, robustness, transmission power and resultant communication range are highly suitable for Universal Medium Range Radar (UMRR) applications. The work was granted a US patent number: 8860607 on October 14th, 2014. This work is described in detail in two publications that were highly praised by the independent reviewers with comments such as "…can have a lot of impact with the UMRR technology" and "I could not really find any weaknesses". For more detail see:
1. F. A. Ghaffar, M. U. Khalid, K. N. Salama, A. Shamim, “24 GHz LTCC Fractal Antenna Array SoP with Integrated Fresnel Lens”, IEEE Antennas and Wireless Propagation Letter, vol. 10, no. 10, pp. 705- 708, July 2011.
2. F. A. Ghaffar, M. U. Khalid, A. Shamim and K. N. Salama, “Gain-Enhanced LTCC System-on-Package for Automotive UMRR Applications,” 53rd IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), pp.934-937, August 2010, Seattle, USA