L-Shaped Slot-Loaded Stepped-Impedance Microstrip Structure UWB Antenna

Jiang, Yanfeng

doi:10.3390/mi11090828

Cited by 13 publications

(6 citation statements)

References 31 publications

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“…A Ceyear vector network analyzer 3672D was used as an alternative to the UWB reader. The two ports of the network analyzer were, respectively, connected to the L-shaped slot-loaded stepped-impedance UWB antennas [41], which were orthogonal to each other to improve the transceiver isolation of the reader. The tag was connected to two orthogonal L-shaped slot-loaded stepped-impedance UWB antennas through two microwave adapters.…”

Section: Resultsmentioning

confidence: 99%

High-Q Slot Resonator Used in Chipless Tag Design

Huang

Chen

2021

Electronics

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A retransmission chipless tag with multiple U-shaped slot resonators is proposed to cut down the cost of traditional tags with chips. Multiple side-by-side U-shaped slot structures of different lengths are printed on the microstrip line, and the two terminals of the microstrip line are connected correspondingly with two orthogonal ultra-wideband (UWB) transceiver antennas to form the retransmission chipless tag. The U-shaped slot resonator has high Q values and narrow impedance bandwidth. The bandwidth that each resonator adds to the protection bandwidth is 300 MHz. Several 6-bit coding U-shaped slot resonator chipless tags are designed and fabricated for comparison and measurement. Results show that the simulation and the measurement are in agreement. The slot width of the U-shaped slot resonator and the distance between the resonators are reduced, resulting in deepened spectrum notch depth of the resonator. Decreasing the dielectric constant of the substrate or increasing the thickness of the substrate increases the spectrum notch depth of the resonator.

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Section: Resultsmentioning

confidence: 99%

High-Q Slot Resonator Used in Chipless Tag Design

Huang

Chen

2021

Electronics

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“…A broader frequency band can be realized by suitably selecting the physical structural parameters due to the use of cost-effective materials and simple topology architectures. The SIR structure could be designed in order to have more diminutive dimensions than the uniform impedance resonator (UIR), which is widely used in RF and microwave devices [11,12]. The respective configurations of both the UIR and the SIR structures are schematically illustrated in Fig.…”

Section: Step Impedance Resonator (Sir)mentioning

confidence: 99%

“…In Ref. [11], a new type of UWB-based microstrip antenna has been proposed. More specifically, a rectangular radiator patch has been employed with dual L-shaped slots in order to expand the current path to both sides of the radiating patch.…”

Section: Introductionmentioning

confidence: 99%

Design of Miniature UWB-Based Antenna by Employing a Tri-Sectional SIR Feeder

Hussein¹,

Mezaal²,

Bayat³

2022

Computer Systems Science and Engineering

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“…The two transmission lines of the microstrip also have different characteristic impedances and electrical lengths, respectively. If the effect of step interruption is neglected, the basic resonance condition of SIR can be obtained from the input impedance of the open circuit terminal [ 35 ].

…”

Section: Antenna Designmentioning

confidence: 99%

Flexible Wearable Composite Antennas for Global Wireless Communication Systems

Zhang

Wang

et al. 2021

Sensors

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Although wearable antennas have made great progress in recent years, how to design high-performance antennas suitable for most wireless communication systems has always been the direction of RF workers. In this paper, a new approach for the design and manufacture of a compact, low-profile, broadband, omni-directional and conformal antenna is presented, including the use of a customized flexible dielectric substrate with high permittivity and low loss tangent to realize the compact sensing antenna. Poly-di-methyl-siloxane (PDMS) is doped a certain proportion of aluminum trioxide (Al2O3) and Poly-tetra-fluoro-ethylene (PTFE) to investigate the effect of dielectric constant and loss tangent. Through a large number of comparative experiments, data on different doping ratios show that the new doped materials are flexible enough to increase dielectric constant, reduce loss tangent and significantly improve the load resistance capacity. The antenna is configured with a multisection microstrip stepped impedance resonator structure (SIR) to expand the bandwidth. The measured reflection return loss (S11) showed an operating frequency band from 0.99 to 9.41 GHz, with a band ratio of 146%. The antenna covers two important frequency bands, 1.71–2.484 GHz (personal communication system and wireless body area network (WBAN) systems) and 5.15–5.825 GHz (wireless local area network-WLAN)]. It also passed the SAR test for human safety. Therefore, the proposed antenna offers a good chance for full coverage of WLAN and large-scale development of wearable products. It also has potential applications in communication systems, wireless energy acquisition systems and other wireless systems.

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L-Shaped Slot-Loaded Stepped-Impedance Microstrip Structure UWB Antenna

Cited by 13 publications

References 31 publications

High-Q Slot Resonator Used in Chipless Tag Design

High-Q Slot Resonator Used in Chipless Tag Design

Design of Miniature UWB-Based Antenna by Employing a Tri-Sectional SIR Feeder

Flexible Wearable Composite Antennas for Global Wireless Communication Systems

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