RETRACTED: Miniaturization of body worn antenna using nano magneto-dielectric composite as substrate in C-band

Gogoi, Pragyan Jyoti; Rabha, Mun Mun; Bhattacharyya, Satyajib; Bhattacharyya, Nidhi S.

doi:10.1016/j.jmmm.2016.04.016

Cited by 11 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The size of crystallites is found to be 31.84 nm. The detailed study is reported by the author in reference [44]. Earlier studies conducted by authors showed that linear low density polyethylene (LLDPE) is a good candidate as the substrate for flexible antennas in C-band [50].…”

Section: Development and Characterization Of Magneto-dielectric Substmentioning

confidence: 99%

“…7 wt.% of nano-sized nickel zinc ferrite-LLDPE (NZF-LLDPE) composite is synthesized and characterized for its tensile strength, water absorbance, and decomposition temperature. The properties of the NZF-LLDPE magnetodielectric composite substrate are discussed by the authors in [44]. The percolation limit of LLDPE for NZF was found to be 7 wt.%.…”

Section: Development and Characterization Of Magneto-dielectric Substmentioning

confidence: 99%

“…LLDPE has good resistance to chemical, high thermal stability, good tensile properties, low water absorbance, non-toxic and is flexible [42,43]. Magneto-dielectric nano composite is synthesized by dispersing nano-sized nickel zinc ferrite (NZF) into LLDPE polymer matrix as discussed by the authors in [44]. The performance of the CPW-fed simple rectangular monopole antenna fabricated on a magneto-dielectric substrate is compared with that of a pure LLDPE substrate as dielectric substrate, and they are studied in free space and proximity to human body.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

CPW-Fed Body Worn Monopole Antenna on Magneto-Dielectric Substrate in C-Band

Gogoi¹,

Bhattacharyya²,

Bhattacharya³

2018

PIER C

Self Cite

View full text Add to dashboard Cite

Body worn antennas generally face the problem of isolation when operated in close proximity to human body. Use of magneto-dielectric material as substrate for antenna makes the system compact and reduces the influence of body on performance of antenna. In addition, miniaturization of antenna size also takes place. 7 wt.% of nano-sized Ni 0.5 Zn 0.5 Fe 2 O 4 is dispersed as magnetic filler in flexible linear low density polyethylene matrix. Beyond 7 wt.%, the sample stiffens and loses flexibility because of percolation limit of the polymer. Verification of the composite as a potential substrate for a body worn antenna is carried out by fabricating a coplanar waveguide fed simple rectangular monopole antenna, using transmission line model at 6 GHz. Antenna performance is studied by wearing the patch on human wrist. S 11 of −21.78 dB at 5.32 GHz and −10 dB bandwidth of 49.62% is observed. For comparison, an antenna at the same resonant frequency is developed on linear low density polyethylene with magnetic inclusions. The antenna on magneto-dielectric substrate shows better performance than dielectric substrate. The magnetic and dielectric properties of the Nickel Zinc Ferrite-linear low density polyethylene composite magneto-dielectric substrate reduces the influence of the human body which makes the antenna system compact and robust as additional techniques are not required for shielding of human body influence on antenna performance.

show abstract

Section: Development and Characterization Of Magneto-dielectric Substmentioning

confidence: 99%

Section: Development and Characterization Of Magneto-dielectric Substmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

CPW-Fed Body Worn Monopole Antenna on Magneto-Dielectric Substrate in C-Band

Gogoi¹,

Bhattacharyya²,

Bhattacharya³

2018

PIER C

Self Cite

View full text Add to dashboard Cite

show abstract

“…Among such materials, magneto dielectrics (MDs) show properties that can easily be tuned, as required in the case of substrates for miniaturized antennas [5]. In particular, MDs allow to tune their permeability and permittivity values as demanded by the working frequency range, while keeping low loss [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Magneto-dielectric characterization of TiO2-CoFe2O4 derived ceramic composites

Galizia¹,

Anbinderis²,

Grigalaitis³

et al. 2018

PAC

View full text Add to dashboard Cite

Dielectric permittivity (ε ′), magnetic permeability (µ ′) and dielectric and magnetic loss (tan δ ε and tan δ µ , respectively) of magneto-dielectric cobalt ferrite-titania (CFO-TO) ceramic composites are determined from 200 to 300 MHz. The four different combinations of phases-that can be produced in the sintered composite, according to the starting CFO/TO molar ratio-allow to tune the macroscopic permittivity and permeability. For the first time impedance, miniaturization and magneto-dielectric loss of the four classes of composites are calculated and discussed. The displayed miniaturization factors between 4.4 and 8.2 in the very-high frequency (VHF) range corroborate their potential application as magneto-dielectric substrate materials for antennas. Remarkably, the ceramic composites characterized by 2 vol.% and 3 vol.% of CFO and TO, respectively, dispersed in Fe 2 CoTi 3 O 10 (FCTO) matrix display a magneto-dielectric loss lower than 0.07 and a miniaturization factor of 4.8.

show abstract