Novel Compact CPW-Fed Antennas with Harmonic Suppression and Bandwidth Enhancement

Abstract

Novel compact CPW-fed antennas with harmonic suppression are presented and investigated in detail. By inserting symmetrical slots connected to the end of CPW transmission line in the ground plane, and exploiting parasitic technique, harmonic suppression, compact size, as well as wide bandwidth are obtained. General performances of the proposed antennas are studied by equivalent transmission line circuits. Moreover, the steps of constructing such harmonic suppression antennas are derived. Eventually, the experiment results verified the validation of the proposed harmonic suppression antennas.

A novel filtering monopole antenna for 5G communications

“…The bandwidth attainment shows an increment of 79.8% (Li et al , 2018), 74.7% (Zhi-Li et al , 2012), 42.2% (Hou et al , 2021), 81.9% (Yun et al , 2021), 51.6% (Nie and Tu, 2021), 93.7% (Ahmad, 2022), 55.9% (Yun et al , 2020) and 59.4% (Pan et al , 2018) is observed.…”

“…However, it is 40% greater on comparing to (Yun et al , 2021). The bandwidth attainment shows an increment of 79.8% (Li et al , 2018), 74.7% (Zhi-Li et al , 2012), 42.2% (Hou et al , 2021), 81.9% (Yun et al , 2021), 51.6% (Nie and Tu, 2021), 93.7% (Ahmad, 2022), 55.9% (Yun et al , 2020) and 59.4% (Pan et al , 2018) is observed. Using an FR4 substrate, a gain of 5.1 dBi (reference antenna) and 3.3 dBi (filtering antenna) is achieved from the simulated results. As for the measured results, a gain of 3 dBi is obtained for the proposed DCPW-fed filtering TCM. Regarding stopband efficiency, it is observed that an average improvement of 37.8% is accomplished using the proposed design.…”

“…The bandwidth attainment shows an increment of 79.8%(Li et al, 2018), 74.7%(Zhi-Li et al, 2012), 42.2%(Hou et al, 2021), 81.9%(Yun et al, 2021), 51.6%(Nie and Tu, 2021), 93.7% (Ahmad, 2022), 55.9%(Yun et al, 2020) and 59.4%(Pan et al, 2018) is observed. Using an FR4 substrate, a gain of 5.1 dBi (reference antenna) and 3.3 dBi (filtering antenna) is achieved from the simulated results.…”

A Multiband Monopole Antenna with the Inverted-Trapezoidal CPW Feeding

“…On the other hand, higher antenna gain can be easily achieved through CPW-fed antennas due to the fact that it gets low radiation leakages [6]. CPW-fed antennas introduce good impedance matching [7], shunt and series connections on the same side without using via holes which result in its simple configuration, manufacturing advantages, and low cost [8]. However, CPW-fed antennas are seldom applied in mobile phones.…”