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In this paper, a monopole UWB broadband antenna is designed, fabricated, and measured for wireless communication networks. The initial radiator model of the proposed antenna has a short-sleeve shape, and to expand the impedance bandwidth, the right and left angles are subtracted symmetrically from the lower half of the radiator. The impedance matching is improved by etching slots in the feed line and adding L-shaped patches symmetrically on both sides of the feed line. The results show that the proposed miniaturized antenna system can cover WiFi 7(2.4–2.484 GHz, 5.15–5.35 GHz, 5.725–5.825 GHz, 5.925–7.125 GHz), 4G LTE (2.3–2.39 GHz, 2.555–2.655 GHz), 5G (4.8–5.0 GHz), X-band (7–12.4 GHz), Ku-band (10.7–14.59 GHz), and C-band uplink bands (5.925–6.425 GHz). Moreover, the antenna is found to be omnidirectional at low frequencies, with a maximum peak gain of 5.43 dBi. The antenna can be used for multi-frequency wireless communication applications.

I was born in the tropics. Australia in the late 70s was well removed from places where fashion changed with each season. We didn’t wear much at all and I don’t remember being versed in how I was to dress. But even as a young boy I was intent on wearing white clothes. At times, I would get to wear a matching white ensemble – white linen shorts, white collared short sleeve shirt and matching white blonde hair.

The elemental blend sinter (EBS) powder metallurgical (PM) method involves the blending of elemental powders along with master alloy or other desired additions, cold pressing the blended powders into shape, and sintering the shape to higher density and uniform chemistry. The sintered shape may subsequently be hot isostatically pressed to full density. In addition the EBS process presents the opportunity to create advanced alloys and metal matrix composites not possible with current ingot (melt) technology.

A NOVELIST GIVES VOICE TO A LOST GENERATION.

Mixing vintage and contemporary pieces with a curator's eye defines a new breed of jewelry boutique. Alexandra Mack uncovers these treasure troves.

From a melanoma vaccine to scar-free topical treatments, breaking news in skin cancer.