FDK Develops Multilayer Chip Baluns for WiMAX
- Realized the world's smallest size with the highest performance -

March 12, 2007

Multilayer Chip Baluns "AMB1608C series"

FDK Corporation(Tokyo Stock Exchange 1st section: Code 6955) announced the development of four multilayer chip baluns for WiMAX and Mobile WiMAX. Although at 1.6 x0.8x0.6 millimeters they are the world's smallest multilayer baluns, they have a low insertion loss of 0.6dB and best in class frequencies of 2.5GHz and 3.6GHz for extremely high performance. These multilayer chip baluns are necessary for impedance matching between equilibrium / non-equilibrium circuits in RF circuits for WiMAX communications equipment such as mobile phones, PDAs, and car navigation systems.

FDK's new chip baluns can achieve the lowest insertion loss in a 1608 size due to FDK's success in the development of low temperature firing materials and optimization of the multilayer pattern, which are developed from FDK's long established ceramics material technology, multilayer process technology, and CAE technology. The baluns comply with the European Union's RoHS Directives.

WiMAX is a high-speed wireless data transmission system which can provide long reach and high-speed mobile data. In areas where it is difficult to install cable or DSL, WiMAX provides a wireless alternative for last mile broadband access and provides high-speed mobile data for mobile equipment.

Samples of the new baluns will ship in April 2007. The baluns will be exhibited at Techno-Frontier 2007in Makuhari Messe, Chiba, Japan from April 18-20, 2007 in Hall 5 Booth 5406.

*1. WiMAX is the radio standard approved by the IEEE: IEEE802.16a is for the fixed radio communication standard and IEEE802.16e is for the mobile communication standard (Mobile WiMAX). WiMAX is nicknamed by WiMAX Forum.
*2&3. Researched by FDK as of March 12, 2007

Product name: Balun AMB1608C 2500Z05 AMB1608C 2500Z10 AMB1608C 3600Z05 AMB1608C 3600Z10
Frequency: [MHz] 2300-2700 2300-2700 3300-3900 3300-3900
Balanced impedance: Z [Ω] 50 100 50 100
Unbalanced impedance: Z [Ω] 50 50 50 50
Insertion loss: [dB] (typ) 0.6 0.6 0.6 0.6
Return loss: [dB] (typ) 15 15 15 15
Amp. Balance: [dB] (typ) 10 10 10 10
Phase Balance: [degree] (typ) 180±10
Dimension: [LxWxH]: mm 1.6 x 0.8 x 0.6
Operating temperaturerange -40°C to +85°C

America: Europe:
Satoshi Fujiura Jin Hasegawa
Phone: +1-408-432-8331 Phone: +49-211-537-464-0
FAX: +1-858-683-2083 FAX: +49-211-593-549
E-mail: sfujiura@fdk.com E-mail: jinh@fdk.com

Jun Akutagawa
Phone: +81-3-5473-4691
FAX: +81-3-3431-1037
E-mail: jun@fdk.co.jp


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