Syfer can now offer a range of SMD filters for frequencies up to 5.5GHz. Custom designed and manufactured devices can be offered for low pass, band pass, high pass or band stop filter applications using our LTCC technology.

We now have the knowledge, software and the expertise to design filters for specific applications. Furthermore, we can offer a turn key service from design, through prototype to manufacture.

TECHNICAL ARTICLE
A technical article is available, please click on this link

SAMPLE KITS
Evaluation kits are available, please contact our sales office with your request

WHAT IS LTCC?
LTCC stands for Low Temperature Co-Fired Ceramic, and is based on a glass / ceramic composite. The device is made up of layers (green-sheets) with the required circuits printed onto the individual layers having a minimum layer thickness of 50μm (0.0018"). After printing, the different layers are stacked like a sandwich and fired in a single process. Contact can be made between layers using vias which makes the creation of inductive coils possible.
Using these techniques it is possible to produce either capacitor or inductive coil elements or a combination of both. Furthermore, as the firing temperature is below 900°C this allows the use of a silver conductor material which offers the best possible conductivity. LTCC is a low cost and high performance technique. As multiple elements are contained in a single package they offer improved performance, save assembly time and reduce required circuit dimensions and cost when compared to conventional methods of filtration.

ADVANTAGES OF LTCC
- Hermetic capsule
- Inductive coils and capacitors in one component using 3-D design
- Established volume production process with low cost
- Established filtering technique for communication, automotive, aerospace etc
- Good thermal conductivity, high thermal resistance
- Silver, gold and other material combinations are possible

TYPICAL APPLICATIONS
- Blue-tooth
- RFID
- Wireless LAN
- WiFi
- GPS
- GSM