Ultra-Wideband Antenna and Design

Liang, Xian Ling

doi:10.5772/47805

Cited by 37 publications

(8 citation statements)

References 80 publications

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“…This includes antenna design with optimized radiation pattern, which has not yet been addressed. A basis for this optimization is the work from Jacobi et al in [ 21 ] or [ 22 , 23 ]. A second direction is the adaptation of the frequency to achieve a high signal quality in terms of stability and signal-to-noise ratio.…”

Section: Discussionmentioning

confidence: 99%

Brachialis Pulse Wave Measurements with Ultra-Wide Band and Continuous Wave Radar, Photoplethysmography and Ultrasonic Doppler Sensors

Hellbrück

Ardelt

Wegerich

et al. 2020

Sensors

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The measurement and analysis of the arterial pulse wave provides information about the state of vascular health. When measuring blood pressure according to Riva-Rocci, the systolic and diastolic blood pressure is measured non-invasively with an inflatable pressure cuff on the upper arm. Today’s blood pressure monitors analyze the pulse wave in reference to the rising or falling cuff pressure. With the help of additional pulse wave analysis, one can determine the pulse rate and the heart rate variability. In this paper, we investigated the concept, the construction, and the limitations of ultrawideband (UWB) radar and continuous wave (CW) radar, which provide continuous and non-invasive pulse wave measurements. We integrated the sensors into a complete measurement system. We measured the pulse wave of the cuff pressure, the radar sensor (both UWB and CW), the optical sensor, and ultrasonic Doppler as a reference. We discussed the results and the sensor characteristics. The main conclusion was that the resolution of the pulse radar was too low, even with a maximum bandwidth of 10 GHz, to measure pulse waves reliably. The continuous wave radar provides promising results for a phantom if adjusted properly with phase shifts and frequency. In the future, we intend to develop a CW radar solution with frequency adaption.

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Section: Discussionmentioning

confidence: 99%

Brachialis Pulse Wave Measurements with Ultra-Wide Band and Continuous Wave Radar, Photoplethysmography and Ultrasonic Doppler Sensors

Hellbrück

Ardelt

Wegerich

et al. 2020

Sensors

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“…Typical microstrip line‐fed PMA has a structure similar to the microstrip line‐fed patch antenna. Commonly it consists of three layers: the top is a printed radiator (monopole patch) excited by a microstrip feed line; the middle is a dielectric substrate; the bottom is a partially truncated ground plane . Thus, the difference between these types of microstrip antennas is the ground plane structure.…”

Section: Design and Methodologymentioning

confidence: 99%

“…Planar printed radiator and system ground plane is essentially unbalanced design, where the electric currents are distributed on both such as the radiation from the ground plane is inevitable. It not only affects the antenna impedance bandwidth but the antenna radiation pattern and various design techniques have been used to improve PMA impedance bandwidth ratios from 2.3:1 to more than 10:1 .…”

Section: Design and Methodologymentioning

confidence: 99%

Bio-inspired design of directional leaf-shaped printed monopole antennas for 4G 700 MHz band

Júnior

Silva

Serres

et al. 2016

Microw. Opt. Technol. Lett.

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In this paper, a biologically inspired design methodology to develop directional leaf‐shaped printed monopole antennas (PMA) for applications in the fourth‐generation (4G) of mobile telecommunications technology is presented. Bio‐inspired in the leaf shapes of a sugar cane plant, compact directional PMA are designed (with partial ground planes and flat rectangular reflectors) to cover the Brazilian 4G 700 MHz regulated band (698–806 MHz), with broadside radiation patterns and maximum directive gain up to 7.7 dBi. Simulated and measured results are presented for the proposed leaf‐shaped antenna prototypes, and obtained results are compared with a square PMA. The use of bio‐inspired leaf‐shaped radiators and flat reflectors provides a fine tuning of ultra‐wideband commonly presented by a conventional PMA, and the lowest resonant mode can be adjusted to cover the 700 MHz band. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1529–1533, 2016

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“…The slot insertion method is the best known method for obtaining a frequency band rejected in the UWB antenna. Indeed, the presence of slots in the patches and/or the ground plane [8][9][10][11], in the parasitic elements [12][13], or in the supply line [14][15] are effective techniques used for making a notched strip. For a given element, the shape and the dimensions of the slot allow fixing the frequency of the notch band.…”

Section: Introductionmentioning

confidence: 99%

Design of a Planar Tri-Band Notch UWB Antenna for X-Band, WLAN, and WiMAX

Alotaibi

2020

Eng. Technol. Appl. Sci. Res.

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In this work, a new ultra-wideband (UWB) antenna design with 2.08GHz to 12GHz impedance bandwidth and triple-band specifications is presented. The proposed antenna is formed by a truncated square patch, a partial ground plane, and a 50Ω microstrip line. Three different types of slots were used in order to induce notched bands. A C-shaped slot is etched on the radiating patch to obtain a notched band in 3.31-4.21GHz for WiMAX. An inverted U-shaped slot in the micro-strip line induces a second notched band in order to reduce the interference with the WLAN [5.04-6.81GHz]. Finally, two inverted L-shaped slots around the micro-ribbon line on the ground plane allow the X-band [9.13 to 10.75GHz]. The antenna has dimensions of 32×28×1.6mm3. The Ansoft software (HFSS) was used to simulate the proposed structure. The simulation results are in good agreement with the measurement results. The antenna shows an omnidirectional radiation pattern.

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Ultra-Wideband Antenna and Design

Cited by 37 publications

References 80 publications

Brachialis Pulse Wave Measurements with Ultra-Wide Band and Continuous Wave Radar, Photoplethysmography and Ultrasonic Doppler Sensors

Brachialis Pulse Wave Measurements with Ultra-Wide Band and Continuous Wave Radar, Photoplethysmography and Ultrasonic Doppler Sensors

Bio-inspired design of directional leaf-shaped printed monopole antennas for 4G 700 MHz band

Design of a Planar Tri-Band Notch UWB Antenna for X-Band, WLAN, and WiMAX

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