Ultra wideband technology and its applications

Rahayu, Yusnita; Rahman, Tharek Abd; Ngah, Razali; Hall, Peter

doi:10.1109/wocn.2008.4542537

Cited by 71 publications

(20 citation statements)

References 11 publications

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“…It can be seen in Figure 3 that both monopoles are well decoupled; also the mutual coupling between both elements in operating band is well under −20 dB. In case of the operation of UWB, usually the fractional bandwidth should remain above 50% [17], whereas for the antenna system under consideration the fractional bandwidth is measured as 143.2% which satisfies ultra-wide band operation. The normalized graphs of simulated and measured radiation patterns for the designed antenna system are shown in Figure 4.…”

Section: Resultsmentioning

confidence: 95%

Compact Ultra-Wide Band MIMO Antenna System for Lower 5G Bands

Alsaif

Usman

Chughtai

et al. 2018

Wireless Communications and Mobile Computing

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This paper presents a novel compact 2 × 2 planar MIMO antenna system with ultra-wide band capability. Antenna system is specifically designed to target lower 5th generation operating bands ranging from 2 GHz to 12 GHz. This band also covers the IEEE 802.11 a/b/g/n/ac. The antenna array geometry has been simulated using CST MWS. The design is extremely miniaturized with total structure size of 13 × 25 × 0.254 mm 3 . The simulated and measured results have been presented. Measured and simulated return loss values for designed antenna are less than −10 dB over the operating band and lowest values of −35 dB and −32.5 dB can been seen at 5.2 GHz and 9.2 GHz, respectively, whereas at the center frequency the return loss is −25.2 dB. The mutual coupling between both elements is less than −20 dB over the transmission bandwidth. Simulated and measured radiation patterns in E and H planes at center frequency show nearly isotropic far fields. The maximum gain is measured as 4.8 dB. Promising results of Envelope Correlation Coefficient and gain diversity of the design have been achieved. Simulated and measured results are found in good agreement. The fractional bandwidth of antenna is measured as 143.2% which satisfies its ultra-wide band response.

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Section: Resultsmentioning

confidence: 95%

Compact Ultra-Wide Band MIMO Antenna System for Lower 5G Bands

Alsaif

Usman

Chughtai

et al. 2018

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

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“…UWB is having more application as mentioned in [12]. It was started with military application to identify unexploded ordnance (UXO) [10] and for mine detection [11].…”

Section: Applications Of Uwbmentioning

confidence: 99%

Review of the ultra wideband pulse generation

Prakash

Ghosh

2015

2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)

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Over the past decade, extensive research work in the field of Ultra Wideband(UWB) technology has given fascinating results in many applications. Initially UWB was developed as a military tool but recently it has been applied in consumer electronics and communication as well as in medical imaging. To implement this technology, it is required to generate subnanosecond pulses. At the beginning it was generated by spark gap techniques, but over time the pulse generation technique has changed. Recently, Step Recovery Diode (SRD) and Microwave transistors are widely used for the generation of UWB subnanosecond pulses. This paper present review of the principles of generation of UWB subnanosecond pulses.

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“…In the last years, remote monitoring and sensing have played an important role in the plans of national defense strategy in order to guard the land borders of a majority of countries. Many research efforts have been undertaken to adopt ultra‐wideband (UWB) wireless communications for land border surveillance applications . An efficient system for this purpose includes capabilities of searching, intercepting, identifying, and locating transmissions or sources of communication to get immediate tactic recognition of a threat or to analyze collected information through an intelligence process …”

Section: Introductionmentioning

confidence: 99%

“…Current works normally focus their study on the behavior of the biconical antenna towards UWB and omnidirectionality over the H-plane. [1][2][3][4][5] In this sense, this article presents the study, the numerical simulation, and the prototyping of a biconical antenna that includes a lightning protection system able to prevent the structure from damage due to an atmospheric discharge about 45 kA and rise time of 10 μs. 6 To the best of our knowledge, there is no such kind of antenna neither in technical literature nor in the industry with such characteristics.…”

Section: Introductionmentioning

confidence: 99%