Slot-array antennas fed by coplanar waveguide for millimeter-wave radiation

Kobayashi, Hiroki; Yasuoka, Yoshizumi

doi:10.1109/22.681203

Cited by 31 publications

(16 citation statements)

References 19 publications

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“…They confirmed that the same antenna theory is applicable in the frequency range below 700 GHz, and that the gain can be increased by 11 dB by replacing a single-slot antenna with a two-dimensional 8 × 3 slot antenna array coupled by a CPW (coplanar waveguide) [11].…”

Section: Introductionsupporting

confidence: 63%

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Slot antenna‐coupled thin‐film warm carrier far‐infrared radiation detectors

Yasuoka

Suzuki

2005

Electrical Engineering Japan

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SUMMARYSlot antenna-coupled thin-film warm carrier devices were fabricated, and the detection properties were investigated at 94 and 700 GHz. Two-dimensional 8 × 3 slot antenna arrays fed by a coplanar waveguide were used as the antennas. The thin-film antennas were fabricated with a photolithographic method, and the warm carrier detectors, which have a contact area of 8 × 10 -10 cm 2 , were fabricated with an electron beam lithographic method. The experimental results indicate that the fabricated devices receive the far-infrared radiation with antenna and rectified it with nonlinear I-V characteristic. By changing the antenna from the single-slot antenna to the two-dimensional 8 × 3 slot antenna array, the detected sensitivity improved by 11 dB.

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Section: Introductionsupporting

confidence: 63%

“…The conductor width and slit width of the CPW are, respectively, 0.055 λ m (15 µm) and 0.012 λ m (3.27 µm). The slot pitch along the H-plane is 1.5 λ d (327 µm), and the CPW length is 1.5 λ m (412 µm) [11].…”

Section: Design Of Warm-carrier Devicesmentioning

confidence: 99%

Slot antenna‐coupled thin‐film warm carrier far‐infrared radiation detectors

Yasuoka

Suzuki

2005

Electrical Engineering Japan

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“…With a view to increasing the gain of the slot antenna array at frequencies below 700 GHz, fabrication of slot antenna arrays fed by CPW have been carried out [7,12]. In these cases, the CPW length between the slot is one wavelength so that all slots are operated in the same phase.…”

Section: Effects Of Substrate On the Operating Characteristics Of Slomentioning

confidence: 99%

“…They have fabricated a thin-film antenna on a dielectric substrate, and have studied their receiving characteristics. It was found that at frequencies below 700 GHz, (1) the slot antenna on a dielectric substrate operates at the mean wavelength λ m = λ 0 / √   (1 + ε r ) / 2 , where λ 0 is the free-space wavelength and ε r is the dielectric constant of the substrate [5], (2) electromagnetic waves in the dielectric substrate propagate at the dielectric wavelength λ d = λ 0 / √  ε r [6], and (3) the propagation wavelength of the coplanar waveguide (CPW) needed for array configuration is the mean wavelength λ m [7].…”

Section: Introductionmentioning

confidence: 99%

Operating properties of thin‐film slot antennas at 2.5‐THz submillimeter wave band

Abe

Yasuoka

2002

Electron Comm Jpn Pt II

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SUMMARYWith a view to the design and fabrication of slot array antennas operating in the submillimeter wave region above 2.5 THz, the operating characteristics of a thin-film slot antenna on a dielectric substrate are studied with emphasis on the radiation pattern. It is found that unlike the thin-film slot antenna in the frequency region below 700 GHz, the thin-film slot antenna itself is likely to be operated at the free-space wavelength, but the antenna is not that in free space and is influenced by the dielectric constant and absorption coefficient of the substrate and the substrate thickness. It is also found that the coplanar waveguide is operating at a mean wavelength derived from the average dielectric constant of free space and the dielectric substrate, like that in the frequency region below 700 GHz.

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“…Furthermore, unwanted propagation can also be suppressed, which could otherwise introduce additional losses [11]. Many researchers have presented different types of CPW-fed slot antennas for millimeter wave applications [12][13][14][15][16][17]. However, the bandwidth of a conventional slot antenna is not wide enough to cover the interested spectrum of millimeter wave.…”

Section: Introductionmentioning

confidence: 99%

Membrane Supported CPW-Fed Wideband Slot Antenna for Millimeter Wave Applications

Krishnan¹,

Boone²,

Rosa³

et al. 2012

PIER C

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Abstract-A low profile CPW fed millimeter wave rectangular slot antenna operating with a wideband; centered at 94 GHz has been designed, fabricated and tested on a 10 µm silicon diaphragm. To improve the bandwidth of the conventional slot antenna a C-shaped tuning stub has been incorporated. Measurement results show that the antenna operates from 75 to 105 GHz with a reflection coefficient better than −10 dB. At its resonant frequency the fabricated slot antennas have a reflection co-efficient ranging from −25 dB to −35 dB. The bandwidth of the antenna with a tuning stub was found to be over 30% at −10 dB. By using the slot antenna with a C-shaped tuning stub the bandwidth has been shown to improve, which could be used for several Millimeter wave applications.

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Slot-array antennas fed by coplanar waveguide for millimeter-wave radiation

Cited by 31 publications

References 19 publications

Slot antenna‐coupled thin‐film warm carrier far‐infrared radiation detectors

Slot antenna‐coupled thin‐film warm carrier far‐infrared radiation detectors

Operating properties of thin‐film slot antennas at 2.5‐THz submillimeter wave band

Membrane Supported CPW-Fed Wideband Slot Antenna for Millimeter Wave Applications

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