Compact UWB flexible elliptical CPW‐fed antenna with triple notch bands for wireless communications

Lakrit, Soufian; Das, Sudipta; Ghosh, Soumendu; Madhav, B. T. P.

doi:10.1002/mmce.22201

Cited by 51 publications

(26 citation statements)

References 22 publications

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“…14, NO. 8, AUGUST 2015 6 can vary from 10 kΩ to less than 1Ω by controlling its bias current [32]. In UWB mode, switching the PIN diodes may dramatically affect the impedance matching that reduces the bandwidth due to parasitic inductance, capacitance, and resistance.…”

Section: Infocommunications Journalmentioning

confidence: 99%

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A Novel UWB Monopole Antenna with Reconfigurable Band Notch Characteristics Based on PIN Diodes

Alnaiemy¹,

Nagy²

2021

Infocommunications journal

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Our design for a novel UWB monopole antenna structure with reconfigurable band notch characteristics based on PIN diodes is presented in this paper. The proposed antenna is comprised of a modified circular patch and a partial ground plane. The band-notch characteristics are achieved by etching a slot on the partial ground plane and inserting three PIN diodes into the slots for adjusting the operating antenna bands. The reconfigurability is achieved by adding three PIN diodes to obtain eight states with UWB, dual and triple operating bands which can be obtained by changing the PIN state from ON to OFF, and vice versa. The proposed design shows a simple biasing process to switch the frequency bands with insignificant gain variation and low radiation efficiency reduction. The reconfigurability of the frequency is accomplished by adjusting the effective slot length through modifying the PIN diodes states at the desired operating bands. The desired operating frequency bands can be obtained by switching the diodes. A systematic parametric study based on a numerical analysis is invoked to verify and refine the proposed performance. The proposed antenna is fabricated on FR-4 substrate with dimensions of 50×60×1 mm3. The proposed antenna performance was tested experimentally and compared to the simulated results from CSTMW based on FIT. Experimental results were in concordance with simulated results. We found that the proposed antenna design had simple geometry and it was easy to control the frequency bands to suit the applications of WiMAX and WiFi systems.

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Section: Infocommunications Journalmentioning

confidence: 99%

“…Through an increase in the overall length of the ground plane slot, the inductance could be raised, while reducing the slot width increases the capacitance. The notched band frequency can be approximated using equation 1 [32].…”

Section: Infocommunications Journalmentioning

confidence: 99%

A Novel UWB Monopole Antenna with Reconfigurable Band Notch Characteristics Based on PIN Diodes

Alnaiemy¹,

Nagy²

2021

Infocommunications journal

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“…This antenna was a coplanar waveguide (CPW)-fed circular disk loaded monopole antenna [ 17 , 18 , 59 ]. The CPW feed line was separated from the ground by 0.25 mm.…”

Section: Operating Principles Of the Chipless Radio Frequency Idenmentioning

confidence: 99%

Frequency-Spectra-Based High Coding Capacity Chipless RFID Using an UWB-IR Approach

Mekki

Necibi

Dinis

et al. 2021

Sensors

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A novel methodology is proposed to reliably predict the resonant characteristics of a multipatch backscatter-based radio frequency identification (RFID) chipless tag. An ultra-wideband impulsion radio (UWB-IR)-based reader interrogates the chipless tag with a UWB pulse, and analyzes the obtained backscatter in the time domain. The RFID system consists of a radar cross-section (RCS)-based chipless tag containing a square microstrip patch antenna array in which the chipless tag is interrogated with a UWB pulse by an UWB-IR-based reader. The main components of the backscattered signal, the structural mode, and the antenna mode were identified and their spectral quality was evaluated. The study revealed that the antenna-mode backscatter includes signal carrying information, while the structural mode backscatter does not include any tag information. The simulation findings were confirmed by experimental measurements obtained in an anechoic chamber environment using a 6-bit multipatch chipless RFID tag. Finally, the novel technique does not use calibration tags and can freely orient tags with respect to the reader.

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“…Therefore, they are remarkable candidates for the personal server communication, preferably individual sensors in WBANs. Also, the textile antenna design should have a compact size [25][26][27][28][29][30] to allow it to be assembled easily into clothes. Researchers have been studying the textile antenna under bending conditions.…”

mentioning

confidence: 99%

“…Researchers have been studying the textile antenna under bending conditions. [30][31][32] The few studies in the literature on wearable antennas using textiles as the substrate are discussed below.…”

mentioning

confidence: 99%

Flexible leather substrate dual-band wearable antenna with impact analysis on testing under wet condition for human rescue system

Regina¹,

Merline²

2021

Textile Research Journal

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Wearable flexible antennas have yielded much attention in recent years because of their interesting features and capabilities for enabling flexible, lightweight, portable and low cost wireless communication. The proposed research work offers the design of the flexible wearable patch antenna with four single Split Ring Resonators (SRRs) using a leather substrate for better performance. The proposed antenna is designed and simulated with leather substrate at the operating frequencies of 0.99 GHz and 3.5 GHz. The antenna is fabricated and validated under free space (normal condition), partially wet, fully wet and dried after wet conditions using Vector Network Analyzer (VNA). Different parameters such as reflection coefficient, Voltage Standing Wave Ratio (VSWR) and gain of the fabricated antenna are measured, and they are compared with the simulation results. The validated results show that the performance of the proposed antenna under free space, partially wet, fully wet and dried after wet conditions is virtually equal. The Specific Absorption Rate (SAR) of this proposed antenna is also investigated for 10g tissues and the SARs are 0.0168763 W/kg and 0.69567 W/kg at the operating frequencies of 0.99 GHz and 3.5 GHz, respectively. As a result, its good performance in wet conditions along with low cost and ready availability of leather material means the proposed antenna can be used for human safety environments, especially in military applications, etc.

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Compact UWB flexible elliptical CPW‐fed antenna with triple notch bands for wireless communications

Cited by 51 publications

References 22 publications

A Novel UWB Monopole Antenna with Reconfigurable Band Notch Characteristics Based on PIN Diodes

A Novel UWB Monopole Antenna with Reconfigurable Band Notch Characteristics Based on PIN Diodes

Frequency-Spectra-Based High Coding Capacity Chipless RFID Using an UWB-IR Approach

Flexible leather substrate dual-band wearable antenna with impact analysis on testing under wet condition for human rescue system

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