Planar millimeter-wave antennas using SiN/sub x/-membranes on GaAs

Stotz, M.; Gottwald, Gerd; Haspeklo, H.; Wenger, J.

doi:10.1109/22.536611

Cited by 31 publications

(8 citation statements)

References 9 publications

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“…Using such techniques, the efficiency of microstrip antennas at 12-13 GHz has been increased from 55% (ε r =10) to 85% (ε synth =2.3) [53,54]. Similar techniques have also been applied at 77 GHz for automotive radar applications [55]. Furthermore, the dielectric constant around a planar antenna can be artificially tailored so as to further increase radiation efficiency and bandwidth.…”

Section: Micromachined Antennas and Synthesized Substratesmentioning

confidence: 99%

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Micromachined devices for wireless communications

1998

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Abstract-An overview of recent progress in the research and development of micromachined devices for use in wireless communication sub-systems is presented. Among the specific devices described are tunable micromachined capacitors, integrated high-Q inductors, micromachined low-loss microwave and mm-wave filters, low loss micromechanical switches, microscale vibrating mechanical resonators with Q's in the tens of thousands, and miniature antennas for mm-wave applications. Specific applications are reviewed for each of these components with emphasis on methods for miniaturization and performance enhancement of existing and future wireless transceivers.

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Section: Micromachined Antennas and Synthesized Substratesmentioning

confidence: 99%

“…For systems operating past X-Band, antennas can also be micromachined with potential cost savings and with additional capabilities attained via active antenna arrays (e.g., phased arrays, power combining, etc.) [51,[53][54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Micromachined devices for wireless communications

1998

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“…The radiating elements are entirely supported by a large PDMS membrane (21.5 10.3 mm ). Due to the elastic properties of the PDMS, the membrane is easily stretched by pulling the structure above the ground plane, in contrast to other membrane-based technologies where mechanical stress has to be optimized [10]. As shown in the zoomed part of Fig.…”

Section: A Designmentioning

confidence: 99%

A Millimeter-Wave Microstrip Antenna Array on Ultra-Flexible Micromachined Polydimethylsiloxane (PDMS) Polymer

Hage-Ali

Tiercelin

Coquet

et al. 2009

Antennas Wirel. Propag. Lett.

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The use of polydimethylsiloxane (PDMS), an ultra flexible polymer, as a substrate for the realization of reconfigurable microwave devices in the 60-GHz band is presented. As bulk PDMS is demonstrated to be lossy at millimeter waves, membrane-supported devices are considered. A new reliable and robust technological process has been developed to micromachine membrane-supported transmission lines and microstrip antenna arrays. It is shown that transmission lines printed on 20-m-thick membranes exhibit similar performances as bulk substrates commonly used at millimeter-wave frequencies. A microstrip antenna array has been also designed and fabricated to demonstrate the feasibility of directive antennas supported by large membranes. Promising applications for mechanical beam-steering, beam-forming, and frequency-tunable antennas are expected.Index Terms-Flexible polymer, membrane, polydimethylsiloxane (PDMS), reconfigurable antennas.

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“…where is a complex distance given by (4) The beam waist size and the Rayleigh range are obtained from [27], [33] (5)…”

Section: A Principles and Quasi-optical Performance Of Gbasmentioning

confidence: 99%

Radiation characteristics and performance of millimeter-wave horn-fed gaussian beam antennas

Sauleau

Coquet

Thouroude

et al. 2003

IEEE Trans. Antennas Propagat.

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Radiation characteristics and performance of Gaussian beam antennas (GBAs) are studied theoretically and experimentally in the 60-GHz band. A GBA consists of a plano-convex half-wavelength Fabry-Perot (FP) resonator excited by a guided source with a metal flange. Two reflecting metal mesh mirrors are formed on both faces of the cavity. After a review of the principles and quasi-optical performance of plano-convex FP resonators illuminated by a plane wave, a new formulation is proposed to compute radiation patterns of GBAs: the usual expression of the waist radius inside open resonators is modified to account for the horn aperture and for the grid parameters of the plane mirror. Standard closed-form relations of vector Gaussian beams are then used to compute the radiated copolar components. In particular, it is shown that the plane mirror is not an equiphase surface, due to the metal flange of the horn. The true phase distribution is approximated by a spherical wavefront. As a result, the directivity of the antenna becomes lower than its quasi-optical value. Experimental data obtained at 60 GHz with several pyramidal horns and various cavities agree very well with the theory. Sidelobes are lower than 25 dB, and the cross-polarization level is the same as that of the primary radiator. Universal curves showing the variations of resonant frequency, 3 dB bandwidth, gain, and radiation efficiency as a function of mirror reflectivity are very useful for the design of GBAs.Index Terms-Fabry-Perot cavity, focusing by a phase variation, Gaussian beam antenna.

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Planar millimeter-wave antennas using SiN/sub x/-membranes on GaAs

Cited by 31 publications

References 9 publications

Micromachined devices for wireless communications

Micromachined devices for wireless communications

A Millimeter-Wave Microstrip Antenna Array on Ultra-Flexible Micromachined Polydimethylsiloxane (PDMS) Polymer

Radiation characteristics and performance of millimeter-wave horn-fed gaussian beam antennas

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