Far-Field Interrogation of Microstrip Patch Antenna for Temperature Sensing Without Electronics

Yao, Jun; Tchafa, Franck Mbanya; Jain, Ankur; Tjuatja, S.; Huang, Haiying

doi:10.1109/jsen.2016.2597739

Cited by 58 publications

(54 citation statements)

References 28 publications

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“…The tunability properties of the antenna can, in principle, also be used for sensing. Several antennas designed for sensing temperature changes of up to 1000 • C have already been demonstrated [31][32][33].…”

Section: Appendix B3 Sensitivity and Tunabilitymentioning

confidence: 99%

Electrically Small Water-Based Hemispherical Dielectric Resonator Antenna

2019

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Recently, water has been proposed as an interesting candidate for use in applications such as tunable microwave metamaterials and dielectric resonator antennas due to its high and temperature-dependent permittivity. In the present work, we considered an electrically small water-based dielectric resonator antenna made of a short monopole encapsulated by a hemispherical water cavity. The fundamental dipole resonances supported by the water cavity were used to match the short monopole to its feed line as well as the surrounding free space. Specifically, a magnetic (electric) dipole resonance was exploited for antenna designs with a total efficiency of 29.5% (15.6%) and a reflection coefficient of −24.1 dB (−10.9 dB) at 300 MHz. The dipole resonances were effectively excited with different monopole lengths and positions as well as different cavity sizes or different frequencies in the same cavity. The overall size of the optimum design was 18 times smaller than the free-space wavelength, representing the smallest water-based antenna to date. A prototype antenna was characterized, with an excellent agreement achieved between the numerical and experimental results. The proposed water-based antennas may serve as cheap and easy-to-fabricate tunable alternatives for use in very high frequency (VHF) and the low end of ultrahigh frequency (UHF) bands for a great variety of applications.

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Section: Appendix B3 Sensitivity and Tunabilitymentioning

confidence: 99%

Electrically Small Water-Based Hemispherical Dielectric Resonator Antenna

2019

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“…The detailed parameters are tabulated in Table 1. The theory of characteristic modes (TCM) for antenna application has been studied recently to better understand the radiation principle [11][12][13][14][15][16][17][18][19][20][21][22]. TCM brings a clearer insight into an antenna's physical behavior independent of the feeding arrangement by identifying the eigenmodes (characteristic modes) of the antenna structure.…”

Section: Of 10mentioning

confidence: 99%

Design of a T-Shaped Antenna Based on Characteristic Mode Manipulation for Metal-Framed Handset Application

et al. 2018

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Recently, metal-framed handset antennas have aroused much attention due to their fantastic appearance and superior robustness. In this paper, a T-shaped antenna suitable for integration with a USB connector is proposed for metal-framed handset application by utilizing the theory of characteristic modes (TCM). Five eigenmodes, one for the lower band and four for the higher band, were merged by a T-shaped metal frame, a feed point, and two shorting pins, as well as three radio frequency (RF) switches so as to broaden the antenna's operating bandwidth. A prototype was fabricated in order to verify the design concept. Experimental results showed that the proposed antenna was able to cover bandwidths of 0.824-0.960 GHz (GSM band) and 1.710-2.690 GHz (DCS, PCS, UMTS, and LTE bands) with an acceptable radiation efficiency of up to 50% and satisfactory radiation patterns.

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“…Various UWB antennas [3][4][5][6][7][8] have been studied to obtain the wideband characteristic required for UWB communications. In [9,10], a reactive impedance surface (RIS) was used to broaden the impedance bandwidth, especially at low frequencies. A meta-material structure was utilized to achieve the wide bandwidth and high gain characteristics in [11,12].…”

Section: Introductionmentioning

confidence: 99%

A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications

2019

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In this paper, we propose a compact four-port coplanar antenna for cognitive radio applications. The proposed antenna consists of a coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna and three inner rectangular loop antennas. The dimensions of the proposed antenna are 42 mm × 50 mm × 0.8 mm. The UWB antenna is used for spectrum sensing and fully covers the UWB spectrum of 3.1–10.6 GHz. The three loop antennas cover the UWB frequency band partially for communication purposes. The first loop antenna for the low frequency range operates from 2.96 GHz to 5.38 GHz. The second loop antenna is in charge of the mid band from 5.31 GHz to 8.62 GHz. The third antenna operates from 8.48 GHz to 11.02 GHz, which is the high-frequency range. A high isolation level (greater than 17.3 dB) is realized among the UWB antenna and three loop antennas without applying any additional decoupling structures. The realized gains of the UWB antenna and three loop antennas are greater than 2.7 dBi and 1.38 dBi, respectively.

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Far-Field Interrogation of Microstrip Patch Antenna for Temperature Sensing Without Electronics

Cited by 58 publications

References 28 publications

Electrically Small Water-Based Hemispherical Dielectric Resonator Antenna

Electrically Small Water-Based Hemispherical Dielectric Resonator Antenna

Design of a T-Shaped Antenna Based on Characteristic Mode Manipulation for Metal-Framed Handset Application

A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications

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