A GaAs DC-20 GHz SPDT absorptive switch

Khabbaz, B.; Morais, Samuel Medeiros Araujo; Powell, S.

doi:10.1109/ugim.1989.37327

Cited by 9 publications

(2 citation statements)

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“…The design of an absorptive SPnT switch can be categorized into two groups. The first one is the broadband design using a series or a series/shunt configuration, which can cover even the extremely low frequency bands [19][20][21][22]. The other is the relatively narrow-band design using quarter-wavelength transmission lines and shunt switches [23][24][25][26].…”

Section: An Absorptive Sp4t Switch Using Multiple-contact Single-crys...mentioning

confidence: 99%

An absorptive single-pole four-throw switch using multiple-contact MEMS switches and its application to a monolithic millimeter-wave beam-forming network

Lee¹,

Kim²,

Kim³

et al. 2008

J. Micromech. Microeng.

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In this paper, a new absorptive single-pole four-throw (SP4T) switch based on multiple-contact switching is proposed and integrated with a Butler matrix to demonstrate a monolithic beam-forming network at millimeter waves (mm waves). In order to simplify the switching driving circuit and reduce the number of unit switches in an absorptive SP4T switch, the individual switches were replaced with long-span multiple-contact switches using stress-free single-crystalline-silicon MEMS technology. This approach improves the mechanical stability as well as the manufacturing yield, thereby allowing successful integration into a monolithic beam former. The fabricated absorptive SP4T MEMS switch shows insertion loss less than 1.3 dB, return losses better than 11 dB at 30 GHz and wideband isolation performance higher than 39 dB from 20 to 40 GHz. The absorptive SP4T MEMS switch is integrated with a 4 × 4 Butler matrix on a single chip to implement a monolithic beam-forming network, directing beam into four distinct angles. Array factors from the measured data show that the proposed absorptive SPnT MEMS switch can be effectively used for high-performance mm-wave beam-switching systems. This work corresponds to the first demonstration of a monolithic beam-forming network using switched beams.

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Section: An Absorptive Sp4t Switch Using Multiple-contact Single-crys...mentioning

confidence: 99%

An absorptive single-pole four-throw switch using multiple-contact MEMS switches and its application to a monolithic millimeter-wave beam-forming network

Lee¹,

Kim²,

Kim³

et al. 2008

J. Micromech. Microeng.

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“…Furthermore, previous SPDT, SP4T, and 4 × 4 switching matrices [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] were never integrated at the system level. If the chip RF output ports are connected on a PCB using bonding wire by the conventional method, then the bandwidth will decrease from 20 to 5 GHz.…”

Section: Introductionmentioning

confidence: 99%

Transmit/receive 3–20 GHz 1.2 mW packaged double-pole-16-throw switching matrix for radar-based target detection

Azhari

Kuwano

Xiao

et al. 2017

Jpn. J. Appl. Phys.

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A 3-20 GHz transmit/receive (T/R) double-pole-16-throw (DP16T) switching matrix has been developed on a printed circuit board (PCB) to control sixteen antennas in a radar-based portable breast-cancer detection system. The DP16T switch consists of four 65 nm CMOS 0.01-20 GHz doublepole-four-throw (DP4T) switches. The proposed switch increase the number of T/R combinations to 224 from the 196 of a conventional switching matrix in order to construct high-resolution images. Using this switch and a 4 ' 4 slot antenna array, a 10 ' 10 mm 2 aluminum target was detected with an 8-GHz-center-frequency Gaussian monocycle pulse. The power consumption of the switch is only 1.2 mW. To the best of the authors' knowledge, this is the first T/R radio frequency (RF) DP16T switching matrix, which was realized with four CMOS DP4T switches on a PCB and was measured with RF PCB connectors.

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Electronic Warfare I

Schineller¹

1995

Gallium Arsenide IC Applications Handbook

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A GaAs DC-20 GHz SPDT absorptive switch

Cited by 9 publications

References 1 publication

An absorptive single-pole four-throw switch using multiple-contact MEMS switches and its application to a monolithic millimeter-wave beam-forming network

An absorptive single-pole four-throw switch using multiple-contact MEMS switches and its application to a monolithic millimeter-wave beam-forming network

Transmit/receive 3–20 GHz 1.2 mW packaged double-pole-16-throw switching matrix for radar-based target detection

Electronic Warfare I

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