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Millimeter-Wave Antenna Arrays

As the cellular data traffic increases, the future wireless communication systems are expected to operate with higher bandwidth. The 60 GHz band has emerged as one of the candidates for next-generation communication systems because 7 GHz of available unlicensed band (57-64 GHz). However, due to large path loss at 60 GHz, high-gain and steerable antenna arrays are required to guarantee short-range communication. Moreover, the antenna arrays need to be low-cost and easily integrated with silicon transceivers.

 

Fig. 1: (a) 3D Schematic model of the 7×7 array and (b) cross-section with detailed geometry showing the via-fed design.

The main objective of our group is to develop a millimeter-wave antenna array with high gain, large scanning volume and easy integration. As shown in Fig.1, as a single-layer patch array, the design satisfies high gain and large scanning volume in E, H, and D planes. In addition,  using micro-electro-mechanical systems (MEMS) processes, one can increase the efficiency of the array by suspending the radiating elements.

Fig.2: The electric field of active scanning in the E plane and 30° from broadside. Fig.3: Realized gain in H plane showing 55° scanning.

 

Related Papers:

J. T. Li and N. Ghalichechian, “A High-gain Large-scanning 60 GHz Via-fed Patch Phased Array Antenna,” 2018 IEEE International Symposium on Antennas and Propagation (APSURSI), Boston, Massachusetts, 2018.

K. Keshtkaran and N. Ghalichechian, "60 GHz Capacitively Probe-Fed Patch Arrays with Suspended Elements," at The 11th European Conference on Antennas and Propagation (EuCAP), Paris, France, 2017. DOI: https://doi.org/10.23919/EuCAP.2017.7928510 (Download PDF).

K. Keshtkaran and N. Ghalichechian, “Suspended 60 GHz Phased Array Antenna With High Efficiency,” International Workshop on Antenna Technology (iWAT), Hilton Cocoa Beach, FL, Feb 29- Mar 2, 2016. DOI: http://dx.doi.org/10.1109/IWAT.2016.7434794 (Download PDF).