Toko America Inc., Mount Prospect, Ill., has launched a dual-band diplexer for mobile applications and a surface acoustical-wave (SAW) filter that is said to be one of the smallest on the market.
The LTF3216D-F diplexer uses proprietary ceramic multilayer materials and processes to improve reliability and performance over previous-generation parts, according to Toko.
The dual-band frequency separators have a carrier frequency range of 800 to 2,000 MHz, making them suitable for separating frequency bands downstream of the antenna for the best flexibility and cost efficiency in dual-band RF cellular design.
The diplexer has insertion loss of less than 0.5 dB. The average minimum attenuation is 20 dB in either the high or low band.
The part fits the 1206 footprint, measuring 3.2 ?? 1.6 mm, and stands 1 mm tall. It has six contacts. Operating temperatures are from -40??C to +85??C. Pricing in 10,000-piece orders is about 75 cents, and samples are shipping from stock.
The SFxxZB line of subminiature IF SAW filters is designed for AMPS and TDMA communications environments. They measure 9.1 ?? 4.8 ?? 1.8 mm, and have 10 contacts, with eight dedicated to grounding.
The center frequencies of standard parts are 83.16, 85.38, and 90 MHz. The passband is up to ??15 kHz from those center frequencies. Adjacent channel rejection is usually 20 dB. Image rejection is typically greater than 70 dB. Performance is typified by a model with capacitance of 2.2 pF, inductance of 0.49 ??H, and impedance of 1,000 *.
Components can be customized for different frequencies. Standard parts cost $4.50 in 5,000-piece orders.