Design of Phased Arrays of Series-Fed Patch Antennas With Reduced Number of the Controllers for 28-GHz mm-Wave Applications

• Published in: IEEE antennas and wireless propagation letters Vol. 15; pp. 1305 - 1308
• Main Authors: Khalily, Mohsen, Tafazolli, Rahim, Rahman, T. A., Kamarudin, M. R.
• Format: Journal Article
• Language: English
• Published: New York IEEE 2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 28 GHz; Antenna radiation patterns; beam scanning; microstrip array antenna; millimeter-wave; Patch antennas; Phased arrays; Three-dimensional displays; Wireless communication
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2015.2505781

New modified 2 × 2 and 3 × 3 series-fed patch antenna arrays with beam-steering capability are designed and fabricated for 28-GHz millimeter-wave applications. In the designs, the patches are connected to each other continuously and in symmetric 2-D format using the high-impedance microstrip lines. In the first design, 3-D beam-scanning range of ± 25° and good radiation and impedance characteristics were attained by using only one phase shifter. In the second one, a new mechanism is introduced to reduce the number of the feed ports and the related phase shifters (from default number 2 N to the reduced number N + 1 in the serial feed (here N = 3) and then the cost, complexity, and size of the design. Here, good scanning performance of a range of ± 20°, acceptable sidelobe level, and gain of 15.6 dB are obtained. These features allow to use additional integrated circuits to improve the gain and performance. A comparison to the conventional array without modification is done. The measured and simulated results and discussions are presented.