Yokowo-UBE Giga Devices Develops Unitized Antenna-Filter Component for Multiband Communications

Delivers bandwidth of more than 900MHz in the 5-GHz Band

November 13, 2002

Yokowo-UBE Giga Devices Co., Ltd. (President: Wasuke Yanagisawa), a joint venture of UBE Industries, Ltd. and Yokowo Co., Ltd., has developed and started shipping samples of unitized antenna-filter component on a single ceramic chip for use in multiband communications for wireless LAN.

Wireless LANs today operate on a variety of standards in the world. The development of a single antenna compatible with multiple standards is therefore an urgent priority. The newly developed component is fitted with both an antenna and filter that are compatible with IEEE 802.11b/a/g specifications and HyperLAN.

The component is applicable for the following frequency bands:

Frequency band 2.4 GHz to 2.5 GHz
4.9 GHz to 5.825 GHz

In addition, Yokowo-UBE Giga Devices is establishing a framework for satisfying diverse customer needs in accordance with the type of chips used in wireless LANs.

The component is applicable for the following power input terminals:

power input terminals Terminal with 1 power input(Common power input for both frequencies)
Terminal with 2 power inputs(Separate power input for each frequency)

The company developed the new component successfully by integrating and refining the proprietary antenna, high-frequency circuit and high-frequency dielectric material technologies of the two parent companies.

The bandwidth of the 5 GHz antennas currently being developed by competitors is less than 600 MHz. However, this new product covers much wider bandwidth of 925 MHz, 1.5 times greater, and was designed to ensure compatibility with all frequencies, from 4.9 GHz to 5.825 GHz.

Main Features of Antenna-Filter(Frequency band varies with each model)

2.4 GHz to 2.5 GHz Peak gain +1.8 to +2.0 dBi or more
Average gain -4.5 to -4.6 dBi or more
4.9 GHz to 5.825 GHz Peak gain +2.7 to +3.1 dBi or more
Average gain -4.6 to -5.5 dBi or more
The Voltage Standing Wave Ratio (VSWR) at all frequencies up to 2.5 times
Isolation for the dual power input terminal type 30 dB min for both frequencies
Product dimensions (L) 8 mm × (W) 9mm × (H) 0.9 mm

Yokowo-UBE Giga Devices is working to upgrade product features further, and plans to begin mass production in the first half of fiscal 2003. Other products include filter elements for BT antennas, GPS antennas and the AMPS/PCS/GPS triplexer. Samples are being shipped to mobile phone manufacturers and integrated circuit manufacturers.

Yokowo-UBE Giga Devices is looking to develop and commercialize a range of antenna-filters that combine the functions of these two components. Current target is to achieve sales of approximately ¥1.0 billion by fiscal 2005.



Shozaburo Kameda, Director
Koichi Tanaka, Director
Telephone: 03-5730-6851
Yokowo-Ube Giga Devices Co., Ltd.


IEEE 802.11b/a/g The Institute of Electrical and Electronics Engineers, Inc.
A standard for wireless LAN set by the U.S.-based IEEE Committee 802.11
HyperLAN High performance European Radio Local Area Networks
HyperLAN is a European wireless LAN standard.
Gain A measure of antenna performance. Large gain signifies high performance.
VSWR Voltage Standing Wave Ratio
A benchmark of power transmission efficiency (1.0 times is ideal)
Isolation A measure of signal separation. The larger the better.
BT Bluetooth (a wireless data communications system for short distances in the 2.4 GHz band)
AMPS Advanced Mobile Phone Service (U.S. analog phone band: 800 MHz)
PCS Personal Communications System (U.S. digital phone band: 1,900 MHz)
GPS Global Positioning System
Triplexer A filter that separates three signals.


For inquiries please contact
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  • General Affairs & Public Relations Group
  • Seavans North Building, 1-2-1 Shibaura, Minato-ku, Tokyo 105-8449
  • Phone : +81-3-5419-6110
  • Contact us by Internet.