Compact planar folded monopole antenna with coupling mechanism for Quad ISM band, GNSS and UMTS applications

This study presents a compact meandered type monopole antenna improved with coupling mechanisms to increase the number of allocated frequency bands in consideration. The proposed antenna includes a meandered (folded) conductor structure. Two straight conductors placed at the end of the meandered part bring Industrial, Scientific and Medical (ISM) bands at the upper UHF band with coupling mechanism, and one stub-like conductor inserted at the input of the meandered region gives another ISM band at the higher frequency. The antenna works at four popular ISM frequency bands of 433, 866, 915 MHz and 2.4 GHz, which cover several wireless applications such as M-bus, M2M, IoT, LoRa, RFID, Wi-Fi and Bluetooth. Along with the optimized dimensions of meandered and straight conductor parts, the proper arrangement of the dimensions related with coplanar feed part additionally provides upper Global Navigation Satellite System (GNSS) band, which includes upper bands of GPS, GLONASS, Galileo applications, and almost full coverage of 3G/UMTS −2100/IMT-2000 band. The described antenna has compact structure with about 0.125λ0 by 0.046λ0 at the lowest frequency, reasonable gain and omnidirectional radiation pattern characteristics.

[1]  Yi Huang,et al.  A Broadband Flexible Implantable Loop Antenna With Complementary Split Ring Resonators , 2015, IEEE Antennas and Wireless Propagation Letters.

[2]  M.M. Tentzeris,et al.  Design and Modeling of Novel Multiband/Wideband Antennas for RFID Tags and Readers Using Time-/Frequency-Domain Simulators , 2007, 2007 Workshop on Computational Electromagnetics in Time-Domain.

[4]  Horng-Dean Chen,et al.  Dualband meander monopole antenna , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[5]  J. Crols,et al.  A 0.35/spl mu/ CMOS fractional-N transmitter for 315/433/868/915 MHz ISM applications , 2003, ESSCIRC 2004 - 29th European Solid-State Circuits Conference (IEEE Cat. No.03EX705).

[6]  L. Ukkonen,et al.  Miniaturized multipurpose dual UHF RFID band antenna , 2010, Proceedings of the Fourth European Conference on Antennas and Propagation.

[7]  Konstantina S. Nikita,et al.  Performance of Miniature Implantable Antennas for Medical Telemetry at 402, 433, 868 and 915 MHz , 2012, MobiHealth.

[8]  R. Bansal,et al.  Antenna theory; analysis and design , 1984, Proceedings of the IEEE.

[9]  Xianling Liang,et al.  Compact meander monopole antenna for tri‐band WLAN application , 2007 .

[10]  M. Chanca,et al.  A multimode 0.3-200-kb/s transceiver for the 433/868/915-MHz bands in 0.25-/spl mu/m CMOS , 2004, IEEE Journal of Solid-State Circuits.

[11]  Mustafa Secmen.  Multiband and Wideband Antennas for Mobile Communication Systems , 2011 .

[12]  Stuart M. Wentworth.  Applied Electromagnetics : Early Transmission Lines Approach , 2007 .