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Toshiba Launches RF Antenna Switches for Smartphones
Achieves lowest insertion loss and smallest size in the industry by using new generation TaRF5 process

TOKYO - Tuesday, October 8th 2013 [ME NewsWire]

(BUSINESS WIRE)-- Toshiba Corporation (TOKYO:6502) today announced that it has developed an SP10T[1] RF antenna switch with a MIPI® RFFE[2] interface that achieves the lowest insertion loss[3] and smallest size in the industry[4] for the smartphone market. Sample shipment starts from today.

The new product uses "TaRF5”, a new generation TarfSOI™ (Toshiba advanced RF SOI)[5] process using silicon on insulator (SOI) technology[6]. By using the TaRF5 process, the new samples achieve a 25% improvement in insertion loss (f=2.7GHz) and a 40% size reduction against products using the TaRF3 process. These improvements can lead to longer battery operating time and smaller mounting space, which can also contribute to smaller sizes for products in which they are used.

Since developing the SOI-CMOS process for smartphone RF antenna switches in 2009, Toshiba has continually developed new generation processes and devices offering improved performance. With LTE now being implemented worldwide, and LTE-Advanced[7] expected to follow, requirements for RF antenna switches are leaning towards multi-port and complex functions. To meet those market demands, Toshiba plans to continue to develop products with low insertion loss and smaller sizes.



Single Pole Ten Throw Switch


The RF front-end interface developed by the MIPI Alliance, Inc.

MIPI is a registered trademark of the MIPI Alliance, Inc.


The loss of electric power that occurs when current goes from one terminal to another in a radio frequency circuit, expressed in decibels.


In the RF antenna switch market as of October 8, 2013. Toshiba survey.


TarfSOI™ is a trademark of Toshiba Corporation.


The technology forms an insulation film under the channel of the MOSFET and reduces stray capacity to improve speed and power saving of the CMOS LSI.


A new communication standard developed by the 3GPP standard development organization. One of the fourth generation mobile communication systems defined by ITU.

Customer Inquiries: Small Signal Device Sales & Marketing Division Tel: +81-3-3457-3411

Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

About Toshiba

Toshiba is a world-leading diversified manufacturer, solutions provider and marketer of advanced electronic and electrical products and systems. Toshiba Group brings innovation and imagination to a wide range of businesses: digital products, including LCD TVs, notebook PCs, retail solutions and MFPs; electronic devices, including semiconductors, storage products and materials; industrial and social infrastructure systems, including power generation systems, smart community solutions, medical systems and escalators & elevators; and home appliances.

Toshiba was founded in 1875, and today operates a global network of more than 590 consolidated companies, with 206,000 employees worldwide and annual sales surpassing 5.8 trillion yen (US$61 billion). Visit Toshiba's web site at

Photos/Multimedia Gallery Available:

Media Inquiries:
Toshiba Corporation
Semiconductor & Storage Products Company
Koji Takahata, +81-3-3457-4963





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