Miniaturized Packaged (Embedded) Antennas for Portable Wireless Devices

Abstract

Packaged (embedded) antennas are becoming more and more in need with the rapid proliferation of wireless communication devices and systems. This include mobile phones, pagers, wireless PDAs, phones with enhanced GPS services, terminals with Bluetooth/WLAN functionalities, and RFID tags for inventory tracking and identification. In this article an overview of miniaturized packaged (embedded) antennas is presented. This includes multiband embedded antennas for mobile phone applications in the 900/1900‐MHz bands, Bluetooth/WLAN in 2.4‐ and 5–6‐GHz bands. Miniaturized planar inverted‐F antennas (PIFAs) are discussed along with wideband monopoles for possible triple‐band applications. Surface‐mount PIFAs, integrated inverted‐F antennas (IFAs), and packaged monopole type radiators are discussed for Bluetooth and WLAN applications. Finally, some future trends in this research area are also discussed.

A Reconfigurable Stacked Microstrip Patch Antenna for Satellite and Terrestrial Links

“…The antenna has an excellent upper hemispherical and azimuthal coverage suitable for terrestrial communications. The patterns on the smaller 0.3 by 0.3 λ ground plane are similar to the patterns of PIFAs for mobile phone applications [22]- [27], while the patterns on the larger 0.9 by 0.9 λ ground plane are similar to the R-shaped PIFA on a vehicle described in our earlier work [28].…”

A New Class of Miniature Embedded Inverted-F Antennas (IFAs) for 2.4 GHz WLAN Application

“…Many wireless devices, such as laptops, mobile phones, and personal digital assistants (PDAs), also have Bluetooth or IEEE wireless local-area network (WLAN) functionalities integrated within them. Antenna choices for such applications include surface-mount planar inverted-F antennas (PIFAs) [12], packaged inverted-F antennas (IFAs) [13], packaged microstrip patches [14], and the embedded (printed directly on the printed circuit board) IFAs [15], [16]. Other examples of board-mounted IFA for 2.4 and 5 GHz WLAN applications can be found in [17]- [20].…”

A Miniaturized Printed Integrated Inverted-F Antenna for Bluetooth or Wireless LAN Application

“…For portable terminals, such as mobile phones, PDAs, and laptops either surface mount PIFA, integrated board mounted IFA, or some sort of printed monopole geometries are used [2]. The first board mounted integrated inverted-F antenna was reported by Ali et al [3,4].…”