Kyoto, Japan Kyocera Corp. says its new 2.4 GHz chip balance filter and 5 GHz chip balun are the industry's smallest for short-range wireless communications. The new 2.4 GHz chip balance filter measures 2.0 x 1.25 x 0.85 mm while the new 5 GHz chip balun sports a package size of 1.6 x 0.8 x 0.6 mm. The devices also feature low insertion loss and high attenuation characteristics.
The balun is essential to two-way conversion between balanced and unbalanced circuits, while the balance filter is a combination of a balun with a band pass filter, which allows only necessary signals to pass through, said the company. Kyocera says it was able to miniaturize the devices by using its proprietary high dielectric and high Q ceramic material and technology in combination with its high frequency circuit design techniques.
Key features of the devices are their low insertion loss and high attenuation characteristics. By revising the circuit configuration and optimizing the resonator circuitry, the balance filter offers an insertion loss of 2.3 dB maximum with attenuation at 30 dB minimum in the 1720 to 1910 MHz range. The new balance filter produces a performance comparable to that of the current mainstream device (2.5 x 2.0 mm) in a smaller package.
Kyocera's 2.4 GHz chip balance filter
Available in the frequency range of 4900 to 5950 MHz, the new balun offers an insertion loss of 1.2 dB maximum. This was achieved by revising the original coil design pattern, said the company. Electrical characteristics are guaranteed over the temperature range of -40°C to 85°C. The devices are in compliance with green procurement standards, the lead-free requirement and RoHS Directive.
Kyocera's 5 GHz chip balun
For additional electrical specifications and frequency characteristics, visit http://global.kyocera.com/prdct/electro/new/wlan/index.html
Pricing for samples is $1.00 per unit. Volume production for both products will begin in October 2004 at a rate of one million units per month at Kyocera's Kagoshima Kokubu plant. The devices will be exhibited at CEATEC JAPAN 2004 in Makuhari Messe (Chiba) on October 5-9, 2004.
Call Kentaro Ishimaru, 886-(0)2-2950-0268, ext. 104, or firstname.lastname@example.org