Enabling Applications of Electromagnetic Waves at 0.3-1.0 THz Using Silicon Electronic Integrated Circuits

Area of Science:

• Electronics
• Terahertz Technology
• Semiconductor Devices

Background:

• Silicon submillimeter-wave electronics have seen substantial progress over the last 15 years.
• Output power has increased by over 1000x, reaching -3.9 dBm at 440 GHz (CMOS) and -10.7 dBm at 1.01 THz (SiGe BiCMOS).
• Signal detection sensitivity has improved dramatically, with the minimum detectable power for a 1 kHz bandwidth signal at 420 GHz improving by 100 million times.

Purpose of the Study:

• To highlight the advancements in silicon submillimeter-wave electronics.
• To discuss the potential applications enabled by these technological improvements.
• To emphasize the role of silicon integrated circuit (IC) technologies in future high-volume manufacturing.

Main Methods:

• Review of performance metrics including output power and signal detection sensitivity.
• Analysis of current technological capabilities and projected improvements.
• Assessment of silicon IC technology's suitability for mass production.

Main Results:

• Output power increased by over 1000x, with single-unit CMOS reaching -3.9 dBm at 440 GHz and SiGe BiCMOS arrays achieving -10.7 dBm at 1.01 THz.
• Detection sensitivity improved by 100 million times for a 420 GHz signal.
• These advancements are projected to support high-resolution imaging (hundreds of meters), gas sensing (up to ~1 THz), and communication (~1000 m).

Conclusions:

• Silicon IC technologies are crucial for integrating complex submillimeter-wave systems into compact, cost-effective devices.
• The demonstrated performance improvements are sufficient for diverse applications like imaging, sensing, and communication.
• Silicon's established manufacturing infrastructure positions it as the key enabler for high-volume production of future submillimeter-wave systems.