Antenna Fundamentals for Legacy Mobile Applications and Beyond by Issa Elfergani Abubakar Sadiq Hussaini Jonathan Rodriguez & Raed Abd-Alhameed

Author:Issa Elfergani, Abubakar Sadiq Hussaini, Jonathan Rodriguez & Raed Abd-Alhameed
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

7.1.2 Techniques to Mitigate Interference in UWB Systems

In spite of the fact that the above-mentioned PMA designs accomplish a broader bandwidth, the defined frequency band for UWB) systems [1–20] may still cause interference with the existing narrow wireless communication systems, such as the wireless local area network (WLAN) IEEE802.11b/g and IEEE802.11a standards (2.4–2.485 GHz), the Worldwide Interoperability for Microwave Access (WiMAX) IEEE802.16 bands (2.5–2.69 GHz, 3.3–3.7 GHz), the IEEE 802.11j WLAN band operating at 4.9–5.0 GHz and 5.03–5.091 GHz, and the IEEE 802.11a WLAN band operating at 5.15–5.35 GHz and 5.47–5.725 GHz.

To solve this problem, several designs of printed monopole UWB antennas incorporating rejected frequency bands have been proposed and designed [11, 21–35]. Numerous approaches were used to mitigate such interference within the spectrum of UWB systems—for example, inserting various shapes of slots into the radiating elements [11, 21–24], generating slots in the ground plane [25, 26], embedding slots into the feeding strip [27], parasitic elements, electromagnetic band gap (EBG) structures [28], using a DGS [29, 30], employing the EBG and DGS techniques simultaneously [31, 32] and adopting frequency selective surfaces (FSS) [33]. Another popular method) is to use various types of resonators on the other side of the substrate [34, 35].

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