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Circuits for reducing transmitter self-interference in cellular and wireless devices

Summary

Although integration of radio devices for cellular and wireless communication improves products by reducing cost and size while increasing speed, increasing the number of devices in a system-on-chip (SoC) also increases signal interference. Current techniques to isolate devices either require bulky components or are ineffective. This technology introduces a compact, active noise cancellation technique that achieves high distortion cancellation and signal isolation. This noise cancellation decreases transmitter leakage in the receiver band, enabling the design of SoCs with higher level integration.

Technology Benefits

Greatly improved noise cancellation allowing for increased integration Compact system-on-chip (SoC) deviceLower cost wireless devicePatent Information:Patent Pending (US 20160359521)Tech Ventures Reference: IR CU14230

Technology Application

Integrated system-on-chip (SoC) circuits with less transmitter leakage and noiseImproved cellular (CDMA, LTE, GSM) and connectivity (WiFi, Bluetooth) wireless systems

Detailed Technology Description

None

*Abstract

None

*Inquiry

Greg MaskelColumbia Technology VenturesTel: (212) 854-8444Email: TechTransfer@columbia.edu

*IR

CU14230

*Principal Investigator

*Publications

J. Zhou, P.R. Kinget, H. Krishnaswamy. “A Blocker-resilient wideband receiver with low-noise active two-point cancellation of >0dBm TX leakage and TX noise in RX band for FDD/co-existence” Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014 IEEE International. 9-13 Feb. 2014, pp. 352-353.

Country/Region

USA