نتایج جستجو برای: wideband uwb antennas

تعداد نتایج: 26902  

Journal: :IEEE Access 2023

Indoor object localization and positioning is part of the space-awareness concept which has seen a rising popularity in recent Internet Things (IoT) research applications. This article presents novel method to improve performance ultra-wide band (UWB) real-time locating systems (RTLS) by improving transmitting receiving reader tag antennas. Patch directional UWB antennas with relatively higher ...

A. Sahebalam Gh. Abed Hodtani M. Osmani-Bojd,

In this paper, Ultra-wideband (UWB) multiple access relay channel with correlated noises at the relay and receiver is investigated. We obtain outer and inner bounds for the IEEE 802.15.3a UWB multiple access relay channel, and also, a diversity gain bound. Finally, we evaluate some results numerically and show that noise correlation coefficients play important role in determining relay position.

2012
Deepak Kumar Tejbir Singh Vikash Gupta Hema Singh

This paper presents the design of compact CPW-fed band notched UWB square ring antenna. The main objective of this proposed research work is to reduce the size of antenna and avoid interference between UWB and WLAN application at 5.5GHz. The antenna consists of a square-ring metal patch and 50Ω coplanar waveguide fed. The structure of the antenna is miniaturized by optimizing its square ring pr...

2009
Ramu Pillalamarri Jyoti Ranjan Panda Rakhesh Singh Kshetrimayum

In this paper, we have investigated printed monopole antennas, which is basically printed microstrip antenna with etched ground plane for UWB applications. In particular, we have simulated two types of UWB printed monopole antennas: circular and modified circular disk monopole antennas. Simple rectangular microstrip lines are used for feeding the printed monopole antennas. This UWB monopole ant...

2010
Bikramaditya Das

For high data rate ultra wideband communication system, performance study of mutual interference such as suppression of interference signal by performing pulse shaping from UWB to other narrowband system using wavelet technique and reduction of interference from other narrowband system to UWB system in conjunction with Transmitted-Reference (TR-UWB) signaling scheme with adaptive receivers is a...

Journal: :Bulletin of Electrical Engineering and Informatics 2023

This article gives a parametric study on strawberry-shaped monopole antennas for ultra-wideband (UWB) systems. The antenna design consisted of three different steps to structure the strawberry radiated antenna. scheduled was simulated an FR4 substrate in low profile UWB applications. total physical dimension is 26 mm×26 mm×1.6 mm, corresponding centre frequency 7.5 GHz. fed via coplanar wavegui...

Journal: :IEICE Transactions 2005
Katsuyuki Haneda Jun-ichi Takada Takehiko Kobayashi

This paper introduces the concept of measuring double directional channels in ultra wideband (UWB) systems. Antennaindependent channel data were derived by doing the measurements in a wooden Japanese house. The data were useful for investigating the impact of UWB antennas and analyzing waveform distortion. Up to 100 ray paths were extracted using the SAGE algorithm and they were regarded as bei...

2004
A. Muqaibel A. Safaai-Jazi S. Riad

Ultra wideband (UWB) wireless communication has been the subject of extensive research in recent years due to its potential applications and unique capabilities. However, many important aspects of UWB-based communication systems have not yet been thoroughly examined. The area of narrow band communication is well developed. The objective of this paper is to present Ultra Wideband (UWB) communica...

Journal: :EURASIP J. Wireless Comm. and Networking 2009
Weihong Niu Jia Li Timothy Talty

With its fine immunity to multipath fading, ultra-wideband (UWB) is considered to be a potential technique in constructing intravehicle wireless sensor networks. In the UWB literature, extensive measuring and modeling work have been done for indoor or outdoor propagation, but very few measurements were performed in intravehicle environments. This paper reports our effort in measuring and modeli...

2012
Mohammad M. Khan Qammer H. Abbasi Sidrah Liaqat Akram Alomainy

This paper presents comparison of two measurement techniques for ultra wideband (UWB) off-body radio channel characterization. A measurement campaign was performed in indoor environment using UWB wireless active tags and reader installed with the tag antenna and same set of measurement was repeated in the frequency domain using Vector Network Analyser (VNA) and cable connecting two standalone t...

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