W-Band (75-110 GHz) Microstrip Components

Chang, Kai; English, D.; Tahim, R.S.; Grote, A.; Pham, T.; Sun, Cheng; Hayashibara, G.M.; Yen, P.; Piotrowski, W.

doi:10.1109/tmtt.1985.1133228

Cited by 29 publications

(5 citation statements)

References 9 publications

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“…The p-i-n diodes consume less power in control circuits and have less weight and smaller size. We have referenced the papers that comprise the fundamental concepts of the p-i-n diode application and mainly have been published 20 years ago [1][2][3][4][5][6][7][8][9][10]. However, interest in p-i-n diodes, particularly with regard to production technology, continues to develop uninterruptedly and exists at the present time [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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p‐i‐n diode phase shifter in waveguide structure

Parnes¹,

Vendik

2015

Micro & Optical Tech Letters

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depending on the mode change, and therefore, the optimum operation of a PA can be achieved. In addition, low insertion loss performance can be obtained for both HP and LP mode operations. CONCLUSIONIn this article, a reconfigurable monolithic step-up autotransformer is presented and analyzed using a nonideal transformer model. In addition, a complete model for the reconfigurable step-up autotransformer has been developed for a silicon substrate case. To verify its reconfigurable operation and modeling method, the proposed reconfigurable autotransformer was implemented using a standard 65-nm CMOS process. The modeled responses show a good agreement with the measured results. The 50-X load is transformed into 3.28 X in HP mode operation, and it is transformed into 12.26 X in LP mode operation at 0.9 GHz. The insertion loss in HP mode operation is 21.424 dB, and that in LP mode operation is 20.706 dB at 0.9 GHz. Using the proposed reconfigurable transformer, the efficiency performance of LP mode operation of a PA can be improved.ABSTRACT: A calculation procedure is proposed to design the p-i-n diode phase shifter based on the waveguide transmission line. The laboratory sample of five-bit phase shifter designed using the proposed procedure was fabricated and measured at 32-36 GHz. It provides the following phase shifts bits: 11 , 22 , 45 , 90 , 180 .

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Section: Introductionmentioning

confidence: 99%

“…The goal of this article is the design of waveguide phase shifter for the Ka-band. For the declared frequency range, the waveguide line is preferable [4][5][6][7]. The advantage of waveguide phase shifters in comparison with monolithic devices is significantly higher power and lower insertion loss level.…”

Section: Introductionmentioning

confidence: 99%

p‐i‐n diode phase shifter in waveguide structure

Parnes¹,

Vendik

2015

Micro & Optical Tech Letters

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“…And fundamental balanced mixers exhibit better noise performances than sub-harmonic types, with rejection to certain spurious responses, LO noise and LO spurious signals. They also have characteristics of inherent isolation between the LO and RF ports, the high 1 dB power compression point of the RF signal [7]. Among fundamental balanced mixers, the cross-bar balanced architecture with a pair of balanced diodes physically located inside either the LO waveguide [8] or the RF waveguide [9,10] is one of common and effective structures.…”

Section: Introductionmentioning

confidence: 99%

A W-band broadband single balanced mixer using an improved 180-degree hybrid

Zhao

Zhang

et al. 2015

JAE

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In this paper, an improved wideband millimeter-wave 180 • hybrid is proposed and a novel W-band broadband single balanced mixer based on the new hybrid is presented. The proposed hybrid consists of a standard waveguide to suspended coplanar waveguide (SCPW) transition and a SCPW to suspended stripline transition. According to the inherent electromagnetic field characteristics of the two transitions, the proposed hybrid achieves good performances of broadband phase, power distribution and isolation. The simulated insertion losses of the two transitions and the isolation between the two signal input ports are better than 0.1 dB and 54 dB respectively. A single balanced mixer based on the proposed hybrid has been designed and fabricated at W-band. The measured single-sideband (SSB) conversion loss is less than 9.5 dB for the radio frequency (RF) range from 80 to 108 GHz. And the best SSB conversion loss of 5.8 dB is achieved with RF of 104 GHz. Moreover, the local oscillator (LO)-RF isolation is more than 30 dB over the overall W-band. The results show that the fabricated mixer has the advantages of broad bandwidth, low conversion loss, and good isolation.

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“…The signal transfer characteristics of a three-port circulator are unidirectional and cyclic among each pair of ports so that it can prevent the interference between the signal for irradiation and that reflected from the sample. However, the availability of the conventional circulator 13) consisting of a branched electrical waveguide (WG) and a small ferrite disc placed on the WG is limited for operations below 170 GHz 14) because of its reduced size and the subsequent required machining/positioning accuracy. Thus, a different device having a circulation function that can be operated at higher frequencies is required for realizing reflection-geometry imaging with a single optical path.…”

Section: Introductionmentioning

confidence: 99%

Planar Circulator for Sub-Terahertz-Wave Reflection-Geometry Imaging

Itô¹,

Yamamoto²,

Muramoto³

et al. 2011

Jpn. J. Appl. Phys.

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A planar circulator circuit (PCC) implementing a 180 hybrid circuit for reflection-geometry sub-terahertz-wave imaging has been developed. The PCC is evaluated by measuring its signal transfer characteristics at around 300 GHz. A resonant behavior with a unidirectional cycling transmittance is observed in the PCC at around 270 GHz, indicating the proper function of the PCC as a circulator. The peak signal-to-background ratio is measured to be about 10. The PCC is integrated with a uni-traveling-carrier photodiode and a Schottky barrier diode to construct a photonic transceiver module. The characteristics of the PCC in the module are also evaluated by measuring images of a test sample. Although the image resolution decreases with signal frequency deviation from the resonant condition, it is confirmed that a practical contrast can be obtained for a bandwidth of about 40 GHz. Using the fabricated transceiver, the in vivo imaging of a human finger at 270 GHz is successfully demonstrated.

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W-Band (75-110 GHz) Microstrip Components

Cited by 29 publications

References 9 publications

p‐i‐n diode phase shifter in waveguide structure

p‐i‐n diode phase shifter in waveguide structure

A W-band broadband single balanced mixer using an improved 180-degree hybrid

Planar Circulator for Sub-Terahertz-Wave Reflection-Geometry Imaging

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