95-GHz Front-End Receiving Multichip Module on Multilayer LCP Substrate for Passive Millimeter-Wave Imaging

In this paper, directional filters (DFs) are first proposed to improve the stability of multichip modules (MCMs), and a new integration approach between microstrip line on liquid crystal polymer (LCP) substrate and electrooptic (EO) modulator on lithium niobate substrate is presented, together enabl...

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Bibliographic Details
Published in:IEEE transactions on components, packaging, and manufacturing technology (2011) packaging, and manufacturing technology (2011), 2018-12, Vol.8 (12), p.2180-2189
Main Authors: Zhang, Yifei, Martin, Richard D., Shi, Shouyuan, Wright, Andrew A., Yao, Peng, Shreve, Kevin, Mackrides, Daniel, Harrity, Charles, Prather, Dennis W.
Format: Article
Language:English
Subjects:
Apertures
Bandwidth
Bandwidths
Circuit stability
Directional filter (DF)
Electromagnetic wave filters
electrooptic (EO) modulator packaging
Electrooptic modulators
High gain
Liquid crystal polymers
Liquid crystals
Lithium niobates
Low noise
Microstrip transmission lines
multichip module (MCM)
Multichip modules
multilayer liquid crystal polymer (LCP)
Multilayers
Noise levels
Noise reduction
Nonhomogeneous media
Optical measurement
Packaging
passive imaging
Passive millimeter wave imaging
Receiving
stability improvement
Substrates
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Summary:In this paper, directional filters (DFs) are first proposed to improve the stability of multichip modules (MCMs), and a new integration approach between microstrip line on liquid crystal polymer (LCP) substrate and electrooptic (EO) modulator on lithium niobate substrate is presented, together enabling an EO front-end receiving MCM at 95 GHz for passive millimeter-wave (mmW) imaging with large distributed aperture. The DFs can efficiently pick the spectrum of interest with low reflection and drop the undesired out-of-band power to the additional ports, thus reducing the possibility of oscillation. With the above and some other integration and packaging technologies, the multilayer LCP-based MCM achieves a high gain of more than 63 dB, a 3-dB bandwidth of 4.7 GHz centered at 95 GHz, and a low noise figure of less than 6 dB within this spectrum, which was characterized using both radio frequency and optical measurement approaches. The packaged MCM has been successfully utilized in passive mmW imaging and may find lots of applications in other wireless systems.
ISSN:2156-3950
2156-3985
DOI:10.1109/TCPMT.2018.2805708