Conformal VHF antenna for the Apollo-Soyuz test project

Sanford, G.; Munson, R.

doi:10.1109/aps.1976.1147626

Cited by 15 publications

(6 citation statements)

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“…MANY airborne and spacecraft systems use microstrip antennas because of their low profile and conformal nature [1][2]. One way by which low profiling can be achieved, is by using magnetodielectric materials.…”

Section: Introductionmentioning

confidence: 99%

Magnetodielectric composite with NiFe₂O₄ inclusions as substrates for microstrip antennas

Borah

Bhattacharyya

2012

IEEE Trans. Dielect. Electr. Insul.

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Magnetodielectric composite relevance as substrate for microstrip antenna is studied. Synthesized nano nickel ferrite (NiFe 2 O 4 ) of crystallite size ~12 nm dispersed in low density polyethylene (LDPE) is developed for the said purpose with varying filler concentration (volume %) from 1% to 5% (0.01 to 0.05). Morphological characterization of the composite is carried out using scanning electron microscopy. Permittivity and permeability of the composites in X-band frequency range is determined using in-touch non-destructive technique and cavity perturbation technique, respectively. The complex permittivity of the substrates varies from ~ 6.091 -8.427 and complex permeability, ~1.0345 -1.1998 for different filler concentrations s. 4Ms value and coercivity is measured using vibrating sample magnetometry. Verification of these composites as potential substrates for microstrip patch antenna is carried out by fabricating simple rectangular patch at 10 GHz using transmission line model. Rectangular patch is designed on 0.01, 0.03 and 0.05 filler concentration composite system. The return loss for the 0.01 vol.% composite system is found to be ~-17 dB. E and H plane radiation pattern shows high directivity and negligible side lobe level.

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Section: Introductionmentioning

confidence: 99%

Magnetodielectric composite with NiFe₂O₄ inclusions as substrates for microstrip antennas

Borah

Bhattacharyya

2012

IEEE Trans. Dielect. Electr. Insul.

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“…For microstrip antennas to be exploited in such systems, high polarization purity and isolation between orthogonal polarizations-be they linear or circular-are needed. Many shapes of the patch like rectangular patch [1], elliptical patch [2], patch with loops [3], square ring microstrip antenna with truncated corners [4] were used to obtained circular polarization. The circular polarization can also be obtained by well known method of a single-feed square microstrip antenna with truncating a pair of patch corners design [5].…”

Section: Introductionmentioning

confidence: 99%

Active microstrip antenna for circular polarization

Gautam¹,

Benjwal²,

Kanaujia³

2011

2011 Indian Antenna Week (IAW)

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A new technique for designing the active microstrip antenna for circular polarization is presented. The circular polarization is achieved by four slits and a pair of truncated corner and the operating frequency is electronically controlled by the bias voltage of varactor diodes. Theoretical modal for an antenna is developed using modal expansion cavity model and circuit theory concept. The results are validated with MoM-based simulator and experimental results. A good agreement between the simulated, calculated, and experimental results is obtained. The tuning range is found to be 40.24% and shows about 71% reduction in antenna size as compare to the conventional circular polarized antenna.

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“…For microstrip antennas to be exploited in such systems, high polarization purity and isolation between orthogonal polarizations‐be they linear or circular—are needed. Many shapes of the patch like rectangular patch [1], elliptical patch [2], patch with loops [3], square ring microstrip antenna with truncated corners [4] were used to obtained circular polarization. Circular polarization can be generated by exciting two orthogonal patch modes in phase quadrature with sign of relative phase determining polarization hand.…”

Section: Introductionmentioning

confidence: 99%

A compact square microstrip antenna for circular polarization

Gautam¹,

Benjwal²,

Kanaujia

2012

Micro & Optical Tech Letters

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A compact square microstrip antenna with four slits and a pair of truncated corner for circular polarization is proposed. Theoretical modal for an antenna is developed using modal cavity model and result are validated with MOM‐based simulator and earlier reported experimental results. A good agreement between the simulated, theoretical model and measured results is obtained. The proposed antenna shows about 39% reduction in antenna size as compared with the conventional circular polarized antenna. Antenna shows consistent return loss and radiation pattern for entire frequency range. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:897–900, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26746

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Conformal VHF antenna for the Apollo-Soyuz test project

Cited by 15 publications

References 0 publications

Magnetodielectric composite with NiFe₂O₄ inclusions as substrates for microstrip antennas

Magnetodielectric composite with NiFe₂O₄ inclusions as substrates for microstrip antennas

Active microstrip antenna for circular polarization

A compact square microstrip antenna for circular polarization

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Conformal VHF antenna for the Apollo-Soyuz test project

Cited by 15 publications

References 0 publications

Magnetodielectric composite with NiFe2O4 inclusions as substrates for microstrip antennas

Magnetodielectric composite with NiFe2O4 inclusions as substrates for microstrip antennas

Active microstrip antenna for circular polarization

A compact square microstrip antenna for circular polarization

Contact Info

Product

Resources

About

Magnetodielectric composite with NiFe₂O₄ inclusions as substrates for microstrip antennas

Magnetodielectric composite with NiFe₂O₄ inclusions as substrates for microstrip antennas