Low-Profile Uniplanar Dual-Band and Dual- Polarized Microstrip Patch Antenna Using Embedded MTM-EBGs

Smyth, Braden P.; Iyer, Ashwin K.

doi:10.1109/tap.2020.3044639

Cited by 19 publications

(6 citation statements)

References 26 publications

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Section: Sar Analysismentioning

confidence: 95%

“…• In comparison to [1,16,17,[28][29][30], the proposed antenna achieves a peak gain of 6.9 dBi and a maximum efficiency of 96.5%. • In contrast to [1,16,17,[28][29][30], the suggested antenna exhibits MIMO arrangement with four ports. • The presented EBG backed antenna covered a large bandwidth of 2.93-11.6 GHz, whereas [1,29] covered a smaller bandwidth.…”

Section: Sar Analysismentioning

confidence: 95%

“…• In contrast to [1,16,17,[28][29][30], the suggested antenna exhibits MIMO arrangement with four ports. • The presented EBG backed antenna covered a large bandwidth of 2.93-11.6 GHz, whereas [1,29] covered a smaller bandwidth.…”

Section: Sar Analysismentioning

confidence: 99%

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Quad-port electromagnetic band gap (EBG)—backed non-isomorphic multiple-input-multiple-output (MIMO) antenna for wearable applications

Govindan¹,

Palaniswamy²,

Kanagasabai³

et al. 2022

Flex. Print. Electron.

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This paper presents the design of a quad-port orthogonal Ultra-Wideband (UWB) monopole antenna backed with an EBG structure. The EBG structure provides band stop / band reject characteristics in the entire UWB range. The overall dimension of the diversity antenna is 70 × 70 × 1〖 mm〗^3 (0.68λ_0× 0.68λ_0×〖0.01λ〗_0), where λ_0 corresponds to the lowest resonating frequency. The proposed monopole antenna offers good impedance bandwidth of 8.67 GHz (2.93-11.6 GHz). The estimated diversity characterization metrics observed over the obtained frequency range are Envelope Correlation Coefficient (ECC) < 0.11, Mean Effective Gain (MEG) < 1 dB, Effective Diversity Gain (EDG) < 9.88 dB, Apparent Diversity Gain (ADG) < 9.99 dB, Channel Capacity Loss (CCL) < 0.19 bits/s/Hz, and Total Active Reflection Coefficient (TARC) < -20.95 dB. Also, SAR analysis is realized for the antenna in seven different tissues of the body (forehead, forearm, upper arm, chest, abdomen, thigh and lower leg) to check radiation exposure towards the human body.

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Section: Sar Analysismentioning

confidence: 95%

Section: Sar Analysismentioning

confidence: 95%

See 1 more Smart Citation

Quad-port electromagnetic band gap (EBG)—backed non-isomorphic multiple-input-multiple-output (MIMO) antenna for wearable applications

Govindan¹,

Palaniswamy²,

Kanagasabai³

et al. 2022

Flex. Print. Electron.

View full text Add to dashboard Cite

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“…2, where uniplanarity is evident. As described in detail in [43], [44], an MTM-EBG unit cell embedded into a patch antenna causes a minimal disturbance of the resonant response at frequencies where it is in its passband, but when the MTM-EBG is in its bandgap, it restricts fields to the central region of the antenna, thus supporting a higherfrequency resonance. The design used in this paper is similar to that of [43], [44], except that in the present case, the MTM-EBG unit cells are not directly placed on the radiating edges of the patch; this allows design for relatively widely spaced bands.…”

Section: Antenna System a Dual-band Patchmentioning

confidence: 99%

“…A versatile technology that achieves all needs of such an antenna system is the metamaterial-based electromagnetic bandgap structure (MTM-EBG) [42]. The MTM-EBG has demonstrated the ability to render antennas multi-band [43], [44] while also acting as a compact filter that can be embedded in microstrip lines [45]- [47], while remaining fully printable and uniplanar in each case. This single structure will therefore be investigated for use in all parts of the antenna system in this work.…”

Section: Introductionmentioning

confidence: 99%

Energy Autonomous Dual-Band Antenna System for RFID-Based Real-Time Battery Level Monitoring

Smyth,

Khoshniyat,

Barati

et al. 2024

IEEE Open J. Antennas Propag.

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This paper presents an energy-autonomous antenna system that combines energy harvesting (EH) with radio frequency identification (RFID) communication to measure the battery charge level in real time. The system employs a dual-band patch antenna, a dual-band matching stub, and a diplexer, which are designed with metamaterial-based electromagnetic bandgap technology (MTM-EBG). Due to the MTM-EBG's uniplanar and via-less design, it can be directly embedded into the antenna and microstrip feed components, thereby contributing to their compactness, lowering cost, and simplifying fabrication. The RFID and EH portions of the system operate at frequencies of 915 MHz and 2.48 GHz, respectively. This system operates by rectifying RF power in the EH band in order to charge a supercapacitor battery, while a varactor imparts phase to the backscattered RFID signal. The phase of reflection is related to the level of charge in the battery, which is then read by the RFID reader. By acquiring the tag and charging information without power, this structure is energy autonomous, so there is no need for a permanent power source that will need to be replaced over time. Using supercapacitors or rechargeable batteries, the proposed structure can provide power for critical functions while monitoring their charging status remotely. The antenna system and RFID/EH architecture have been fabricated and measured, and battery level monitoring has been demonstrated.

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Isolation enhancement of compact co‐polarized circular patch antennas using embedded series resonator

Wan,

He,

Shi

et al. 2024

Micro & Optical Tech Letters

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An embedded series resonator for compact co‐polarized circular patch antenna pairs is presented in this paper. With a compact center spacing (CS) of 0.32λ0 and edge spacing (ES) of 0.03λ0 (λ0 is the free‐space wavelength at the center frequency), strong mutual coupling inevitably arises. However, by introducing a cross‐shaped fence and two quarter‐wavelength open‐ended slots onto a circular patch, port isolation of the first proposed antenna pair is significantly enhanced by 25.2 dB within a bandwidth of 6.2%. Moreover, the effectiveness of the embedded series resonator is demonstrated by achieving a wider 20‐dB decoupling bandwidth of 10.4% for the second proposed compact bandwidth‐enhanced antenna pair. For validation, both proposed prototypes are fabricated and measured, showing good agreement between measurements and simulations. To demonstrate the universality, a 1 × 8 patch array with an embedded series resonator can achieve a beam scanning angle of ±70◦ with a gain attenuation of 2.6 dB. Benefiting from compact size, high isolation, and enhanced decoupling bandwidth, the proposed designs hold promising potential for application in multiple‐input multiple‐output system and antenna array.

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Low-Profile Uniplanar Dual-Band and Dual- Polarized Microstrip Patch Antenna Using Embedded MTM-EBGs

Cited by 19 publications

References 26 publications

Quad-port electromagnetic band gap (EBG)—backed non-isomorphic multiple-input-multiple-output (MIMO) antenna for wearable applications

Quad-port electromagnetic band gap (EBG)—backed non-isomorphic multiple-input-multiple-output (MIMO) antenna for wearable applications

Energy Autonomous Dual-Band Antenna System for RFID-Based Real-Time Battery Level Monitoring

Isolation enhancement of compact co‐polarized circular patch antennas using embedded series resonator

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