A fully monolithic integrated twin dipole antenna mixer on a GaAs substrate

Deng, Kung-Li; Meng, Chinchun; Lu, Shey‐Shi; Lee, H.D.; Wang, H.

doi:10.1109/apmc.2000.925717

“…This allows for the production of compact systems for passive millimeter wave imaging, remote sensing, radio astronomy, cloud radar, automotive collision warning, and adaptive cruise control systems [1][2][3][4][5][6][7][8]. These applications require antenna systems operating at millimeter wave to have high gain, low side lobes and wide bandwidths.…”

Section: Introductionmentioning

confidence: 99%

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

Krishnan¹,

Boone²,

Rosa³

et al. 2012

PIER C

1

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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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Coplanar Stripline (CPS) Components

Suh¹

2005

Encyclopedia of RF and Microwave Engineering

0

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Coplanar stripline (CPS) is a balanced uniplanar transmission line, consisting of two metallic conductor strips separated by a certain gap width, on a substrate. Conventional CPS does not provide bottom metallization of the substrate for ground; instead, one of the conductor strips provides electric ground of the other signal strip. This article investigates (1) CPS transmission‐line characteristics for practical circuit design and analysis using closed‐form equations; (2) CPS circuit components such as resonators, filters, and “tee” junctions; and (3) applications to antennas and wireless power transmission. Various new CPS resonators are modeled and designed and their performance investigated in terms of Q factor or bandwidth. As applications of the proposed CPS resonators, new CPS bandpass filters are demonstrated. The design methods of bandpass filters and their lumped‐element equivalent circuits are presented. A simple CPS lowpass filter is developed using interdigital capacitors and a CPS transmission line. For CPS component measurements, two types of broadband CPS‐to‐microstrip transition are introduced. Printed dipole antenna feeding can also be easily implemented using this transition. A novel CPS tee junction using coupled CPS (CCPS) is introduced. As an application of CPS tee junction, a twin‐dipole antenna fed by microstrip‐to‐CPS tee junction is presented at Ka band. A 1×8 printed dipole phased array is developed with the twin‐dipole antenna. Finally, as a circuit application of CPS, a dual‐frequency rectenna is developed at 2.45 and 5.8 GHz. For dual‐frequency rectenna components, a dual‐frequency antenna, CPS lowpass filter, and CPS bandstop filters are developed. To achieve high RF ‐to‐DC conversion efficiencies at both frequencies, diode analyses are performed for frequency‐insensitive high conversion efficiency.

show abstract

Coplanar Stripline (CPS) Components

Suh

2005

Encyclopedia of RF and Microwave Engineering

0

View full text Add to dashboard Cite

Coplanar stripline (CPS) is a balanced uniplanar transmission line, consisting of two metallic conductor strips separated by a certain gap width, on a substrate. Conventional CPS does not provide bottom metallization of the substrate for ground; instead, one of the conductor strips provides electric ground of the other signal strip. This article investigates (1) CPS transmission‐line characteristics for practical circuit design and analysis using closed‐form equations; (2) CPS circuit components such as resonators, filters, and “tee” junctions; and (3) applications to antennas and wireless power transmission. Various new CPS resonators are modeled and designed and their performance investigated in terms of Q factor or bandwidth. As applications of the proposed CPS resonators, new CPS bandpass filters are demonstrated. The design methods of bandpass filters and their lumped‐element equivalent circuits are presented. A simple CPS lowpass filter is developed using interdigital capacitors and a CPS transmission line. For CPS component measurements, two types of broadband CPS‐to‐microstrip transition are introduced. Printed dipole antenna feeding can also be easily implemented using this transition. A novel CPS tee junction using coupled CPS (CCPS) is introduced. As an application of CPS tee junction, a twin‐dipole antenna fed by microstrip‐to‐CPS tee junction is presented at Ka band. A 1×8 printed dipole phased array is developed with the twin‐dipole antenna. Finally, as a circuit application of CPS, a dual‐frequency rectenna is developed at 2.45 and 5.8 GHz. For dual‐frequency rectenna components, a dual‐frequency antenna, CPS lowpass filter, and CPS bandstop filters are developed. To achieve high RF ‐to‐DC conversion efficiencies at both frequencies, diode analyses are performed for frequency‐insensitive high conversion efficiency.

show abstract

A fully monolithic integrated twin dipole antenna mixer on a GaAs substrate

Cited by 7 publications

References 8 publications

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

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

Coplanar Stripline (CPS) Components

Coplanar Stripline (CPS) Components

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