1993
DOI: 10.1109/22.247918
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A planar wideband 80-200 GHz subharmonic receiver

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Cited by 61 publications
(26 citation statements)
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“…The receiver is mounted on a high-resistivity Silicon lens, eliminating the power loss to substrate modes and making the pattern unidirectional into the dielectric lens [6]. From previous experience [7], [8], the relative dielectric constants of silicon ( E , = 11.7) and GaAs (t, = 12.8) are close enough that no substrate modes and associated power loss occur when a GaAs wafer is placed on a silicon lens. The power radiated to the backside is minimal, only 9% (0.4 dB), and therefore no backing cavity is used to recover this power loss.…”
Section: Designmentioning
confidence: 99%
“…The receiver is mounted on a high-resistivity Silicon lens, eliminating the power loss to substrate modes and making the pattern unidirectional into the dielectric lens [6]. From previous experience [7], [8], the relative dielectric constants of silicon ( E , = 11.7) and GaAs (t, = 12.8) are close enough that no substrate modes and associated power loss occur when a GaAs wafer is placed on a silicon lens. The power radiated to the backside is minimal, only 9% (0.4 dB), and therefore no backing cavity is used to recover this power loss.…”
Section: Designmentioning
confidence: 99%
“…The elliptical lens couples well to a Gaussian-beam at its minimum waist, where there is a planar equiphase front [1]. Most of the work reported thus far used high-permittivity low loss material hemispherical lenses, such as silicon and alumina lenses, because higher dielectric constant yields a more exact geometrical approximation to an elliptical lens and a wider multiple-beam coverage range [1][2][3] or low-permittivity low loss plastic material elliptical lenses [4] because they are low cost and easily machinable with standard tools. In the present application, the dielectric constant of the lens material needs to be chosen carefully.…”
Section: Introductionmentioning
confidence: 98%
“…In addition, this approach is capable of increasing the effective aperture of a single planar radiating element from several mm 2 to several cm 2 and suppressing surface waves, which is an important consideration at mm-wave frequencies. The concept of quasioptical beamforming by means of substrate-lens antenna combinations is well established and extensively explored with a focus on applications in radio astronomy and remote sensing; see, for example [1][2][3]. Attempts have also been made to apply the substrate lens technique for wireless communications at 30 GHz [4].…”
Section: Introductionmentioning
confidence: 99%
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“…In addition, this approach is capable of increasing the effective aperture of a single planar radiating element from several mm 2 to several cm 2 and suppressing surface wave, which is an important consideration at mm-wave frequencies. The concept of quasioptical beamforming by means of substrate-lens antenna combinations is well established and extensively explored with a focus on applications in radio astronomy and remote sensing at 100-150 GHz; see, for example [1][2][3]. Attempts have also been made to apply the substrate lens technique for wireless communications at 30 GHz [4].…”
Section: Introductionmentioning
confidence: 98%