Broadband printed π‐shaped monopole antenna for WLAN operation

Self Cite

A hybrid dual‐antenna formed by an inverted‐F antenna (IFA) and an open‐slot antenna (OSA) for the 3.6‐GHz LTE operation (3.4–3.8 GHz) in the tablet computer is presented. The dual‐antenna is printed on a 0.8‐mm thick FR4 substrate and has a compact planar structure of 4 × 30 mm2. The dual‐antenna comprises a clearance region wherein the IFA is disposed and a metal pad wherein the OSA is embedded. The IFA's shorting strip is grounded through the metal pad to the device ground plane, so that an integrated compact dual‐antenna structure is obtained. As the IFA and OSA have different excitation mechanisms (electric‐current excitation on the IFA vs. magnetic‐current excitation on the OSA), the two antennas are expected to have different near‐field characteristics, thereby leading to decreased coupling. The proposed dual‐antenna has a measured isolation of better than about 12 dB over the operating band. The IFA and OSA have measured antenna efficiencies of about 72%–86% and 57%–78%, respectively. Good envelope correlation coefficient of less than 0.1 is obtained. Over the operating band, the ergodic capacity of the dual‐antenna is calculated to be about 9.8–10.6 bps/Hz. Details of the proposed dual‐antenna are presented. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2592–2598, 2015

Section: Proposed Daul‐antennamentioning

confidence: 99%

Hybrid dual‐antenna for the 3.6‐GHz LTE operation in the tablet computer

Chang

2015

Self Cite

“…Figure 1(a) shows the configuration of a Bluetooth headset PIFA with a matching wire and a headset battery in the close vicinity (gap of 1 mm). The PIFA is of a metallic strip [2,8,9], obtained from a 0.3-mm thick, copper-nickel-zinc alloy, and perpendicularly mounted on the top left corner of a small system ground with dimensions 10 mm Â 20 mm. The main radiating strip of the antenna extends along and above the top and right sides of the system circuit board to avoid occupying limited board space.…”

mentioning

confidence: 99%

Matching a Bluetooth headset antenna on a small system ground by using a conductive wire

Chou

2009

Self Cite

In this article, a simple, yet effective method for matching a compact planar inverted‐F antenna (PIFA) on a small system circuit board for Bluetooth headset applications is presented. The antenna is perpendicular to and extends along the top and right sides of the system ground, making it possible for the antenna to occupy almost no limited board space. Results have shown that by introducing a thin conductive wire soldered to the bottom corner of the system ground, good input matching over the 2400–2484 MHz band can easily be achieved for the PIFA mounted on a small ground of length less than a quarter wavelength at 2440 MHz. Radiation measurements of the proposed design in a real headset attached to a standard head phantom are also taken. Details of the obtained experimental and simulation results are given and discussed. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2802–2805, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24755

Fabrication and measurement of an arrow‐shaped microstrip patch antenna in the 5‐GHz band

Yoon

et al. 2004

In this paper, an arrow‐shaped microstrip patch antenna is designed, fabricated, and measured for a 5‐GHz band wireless local area network (WLAN) application. The geometry of our proposed antenna is suitable for the wideband antenna in the 5‐GHz band. To obtain sufficient bandwidth in the operating band, a foam layer is inserted between the ground plane and the substrate. A coaxial probe source is used. The measured results for the bandwidth and radiation patterns are obtained, with the result of the fabricated antenna (4.79–5.94 GHz) satisfying the conditions of the VSWR < 2.0 in the 5‐GHz band (5.15–5.35 GHz, 5.470–5.725 GHz, 5.725–5.825 Ghz, 5.725–5.925 GHz), and a gain of 5.02–7.25 dBi and a broad radiation pattern are achieved. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 503–505, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20516