1020 Mw Shengyi Technology 77 Ptfe Laminate Promo 5f908b4a6f3aa

Materials

Ultra-Low-Loss PCB Substrate Suits 77-GHz ADAS Radar Apps

Oct. 21, 2020

PTFE material exhibits key electrical properties which mesh with the leading 77-GHz ADAS substrate of choice.

In its mmWave77 product, Shengyi Technology now offers a PTFE-based dielectric PCB laminate for which it claims the industry’s lowest transmission loss. That results in the highest transmission efficiency for mission-critical automotive safety radars. The mmWave77 laminate material exhibits excellent electrical properties with stability over frequency, temperature, and environmental changes for long-term reliability.

The material’s ceramic-filled PTFE composition exhibits homogeneous uniformity in all three directions, as well as low moisture absorption. It is made to meet the demanding electrical performance, reliability, and safety requirements of 77-GHz radars in automotive driver-assistance system (ADAS) applications. mmWave77 provides a cost-effective replacement for the mainstream PTFE laminate of choice in such scenarios.

Some key specifications include:

Process dielectric constant (Dk: permittivity) of 3.0 ±0.04; Df (loss tangent) is 0.0010 @ 10 GHz (stripline method); Design Dk is 3.06
Insertion loss: -1.29 dB/in. @ 77 GHz (based on 0.127-mm dielectric thickness, 12-mil line width, and H/H foil)
Dk is stable between -40° and +150℃ at up to V-band frequency. Temperature coefficient of Dk (TcDk) is between -12 and -20 ppm/° (-40°~+150°)
Dielectric thickness tolerance is 0.127 ±0.006 mm (5 mil ±5%)

Shengyi Technology, www.shengyi-usa.com

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David Maliniak | Executive Editor, Microwaves & RF

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