Reconfigurable Antenna for Future Spectrum Reallocations in 5G Communications

• Published in: IEEE antennas and wireless propagation letters Vol. 15; pp. 1297 - 1300
• Main Authors: Le Huy Trinh, Ferrero, Fabien, Lizzi, Leonardo, Staraj, Robert, Ribero, Jean-Marc
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-01-2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: 5G communications; Antenna measurements; Antennas; Bandwidth; Capacitance; Capacitors; digitally tunable capacitor; Electromagnetism; Engineering Sciences; Frequency measurement; handset antenna; multiband antenna; Prototypes; reconfigurable antenna; DCS/PCS; reconfigurable antenna; 3G mobile communication; handset antenna; printed circuits; Frequency measurement; mobile terminal; 5G communications; Prototypes; LTE 1800/2600; Bandwidth; antenna structure; frequency 3.5 GHz; mobile antennas; Long Term Evolution; Antenna measurements; 5G mobile communication; microwave antennas; printed circuit board; PCB; UMTS; spectrum reallocations; digitally tunable capacitor; LTE 600/700; capacitors; Capacitance; multiband antenna; GSM 850/900 standards; Antennas
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2015.2505669

This letter presents a reconfigurable antenna for mobile terminals with extended band coverage obtained by using a digitally tunable capacitor (DTC). The antenna structure is matched permanently over high frequency bands including DCS/PCS, UMTS, LTE 1800/2600, and 3.5-GHz bands. Concerning the sub-GHz bands, several reconfigurable states enable a full coverage of LTE 600/700 and GSM 850/900 standards, as well as expected spectrum reallocations for 5G communications. With dimensions of 40 ×10 ×6 mm 3 for the antenna and 130 ×70 ×0.8 mm 3 for the whole printed circuit board (PCB), this structure is compatible with any mobile terminal.