A wideband loop‐type ground radiation antenna using ground mode tuning and optimum impedance level

Abstract

In this article, a wideband loop‐type ground radiation antenna is proposed for USB dongle applications. Wide bandwidth has been achieved using the orientation of the antenna embedded in the ground plane along with the impedance level of the feed structure. The ground clearance of the antenna is utilized so that the ground mode is tuned to the mid‐band frequency. The impedance level is controlled by using a series combination of a lumped inductor and a capacitor in the feed loop of the antenna. A good agreement between measured and simulated results has been observed. The measured bandwidth and peak total efficiency of the antenna are 1180 MHz and 88.27%, respectively.

Dual-band B-shaped antenna array for satellite applications

“…4. A mode resonates when its eigenvalue is zero [39]. For the proposed B-shaped structure, mode 1 and mode 2 resonate at 3.9 and 4.1 GHz, respectively.…”

A wideband isolation technique using bezel coupled T‐type isolator for smartwatch MIMO applications

“…[21][22][23] Many bandwidth enhancement techniques have been reported in the literature that can be employed to enhance the bandwidth of the PIFA antenna. 24,25 However, the techniques focused on isolation bandwidth enhancement need further investigation.…”

“…However, narrow isolation bandwidth has been a major drawback in GradiAnt‐based MIMO antennas proposed in Qu and colleagues 21–23 . Many bandwidth enhancement techniques have been reported in the literature that can be employed to enhance the bandwidth of the PIFA antenna 24,25 . However, the techniques focused on isolation bandwidth enhancement need further investigation.…”