[據美國硅半導體網站2015年2月26日報道]在2015年國際固態(tài)電路會議（ISSCC）上，比利時微電子研究中心（IMEC）和松下推出可工作在79GHz、適用于相位調制連續(xù)波雷達的互補金屬氧化物半導體（CMOS）單片收發(fā)機芯片。該成就顯示出CMOS用于便宜毫米波雷達系統(tǒng)實現精準表現和動作探測的潛力。

毫米波雷達技術用于高級輔助駕駛系統(tǒng)（ADAS）可以提升塵、霧和黑暗等模糊環(huán)境中安全性，因為在這些環(huán)境中基于圖像的駕駛輔助系統(tǒng)的可靠性會喪失。基于毫米波雷達技術的ADAS可提供更長的距離、更高的精確度，以及比超聲傳感器更強的隱形安裝能力。IMEC研制的79GHz單片收發(fā)機基于先進的28nm CMOS技術實現，是替代現有基于鍺硅（SiGe）技術的一個引人注意的方案，因為它可實現更低的功耗和更高集成度。而且，基于CMOS的高量產能力，從根本上保證了CMOS技術的低成本性。

IMEC和松下聯合開發(fā)的收發(fā)機芯片中包含一個控制回路，在不影響射頻性能的基礎上可抑制從發(fā)送機到接收機的溢出。該收發(fā)機功耗260mW，發(fā)射機輸出功率11dBm，接收增益為35dB，噪聲指數低于7dB，發(fā)送到接收的溢出抑制為15dB。由于采用寬調制帶寬，深度分辨率可達到7.5cm。

IMEC物聯網感知系統(tǒng)項目總監(jiān)Wim Van Thillo說：“我們很高興能夠在28nm CMOS技術上實現這些卓越的性能，也很高興看到該技術為毫米波雷達系統(tǒng)所帶來的新機會，應用領域不僅是汽車雷達，還包括智能家居、無人機、機器人和其他等。該收發(fā)機芯片是我們在追求在單個芯片上實現完整高性能雷達系統(tǒng)過程中取得的一個重要里程碑。”

感興趣的公司可通過IMEC工業(yè)合作項目或IP授權加入此CMOS基79GHz雷達技術的研究。

編譯：工業(yè)和信息化部電子科學技術情報研究所  張倩

圖片及原文鏈接編輯：《電科防務研究》

Related:

Imec and Panasonic Present breakthrough in CMOS-based Transceivers for mm-Wave Radar Systems

25/2/2015

SAN FRANCISCO (ISSCC 2015, International Solid State Circuits Conference) – Feb. 25, 2015 — Today, at the 2015 International Solid State Circuits Conference (ISSCC), imec and Panasonic presented a transceiver chip for phase-modulated continuous-wave radar at 79GHz. This achievement demonstrates the potential of downscaled CMOS for cheap millimeter-wave (mm-wave) radar systems that can be used for accurate presence and motion detection.

Mm-wave radar technology is used in advanced driver assistance systems (ADAS) to improve safety in blurry conditions such as dust, fog and darkness, where image-based driver assistance systems lack robustness. It also offers longer range, higher precision and invisible mounting capabilities compared to ultrasound sensors. Imec’s 79GHz radar solution is based on advanced (28nm) CMOS technology, and it is an attractive alternative to the current SiGe-based technology as it offers a path to a low-power, compact and integrated solution. Moreover, at the expected high manufacturing volumes, CMOS technology is intrinsically low-cost.

Imec’s and Panasonic’s transceiver chip contains a control loop to suppress the spillover from the transmitter into the receiver without affecting the RF performance. With a power consumption of 260mW, the output power of the transmitter is 11dBm, while the RX gain is 35dB with a noise figure below 7dB and a TX-to-RX spillover suppression of 15dB. Thanks to the wide modulation bandwidth, the achievable depth resolution is 7.5cm.

“We are pleased with these excellent performance results on 28nm CMOS technology, and excited about the new opportunities they present for mm-wave radar systems, not only for automotive radar, but also for other applications such as smart homes, unmanned aerial vehicles (UAVs), robotics and others.” stated Wim Van Thillo, program director Perceptive Systems for the Internet of Things at imec. “This transceiver chip is an important milestone we have realized in our pursuit of a complete high-performance radar system fully integrated onto a single chip”.

Interested companies have access to imec’s CMOS-based 79GHz radar technology by joining imec’s industrial affiliation program or through IP licensing.