Temex launches SAW filters for Single Cable Distribution Systems

Temex of France, a worldwide leader in the field of high-performance time & frequency components and sub-systems, has announced the launch of a wide range of SAW filters for Single Cable Distribution (SCD) Systems. Used for selecting TV channels, Temex SAW filters constitute the key component for these systems.

[ClickPress, Thu Jul 20 2006] Temex of France, a worldwide leader in the field of high-performance time & frequency components and sub-systems, has announced the launch of a wide range of SAW filters for Single Cable Distribution (SCD) Systems. Used for selecting TV channels, Temex SAW filters constitute the key component for these systems.

With the increasing number of set-top-boxes in the home, together with the widespread use of high-end DVR-PVR and high-definition receivers, several cables are needed to connect with the satellite dish on the roof. Expensive installations, potentially ugly and troublesome wiring, and restrictions in apartment buildings will limit the potential development of the satellite reception market.

With the Single Cable Distribution (SCD) Systems promoted by the SCD Consortium, only one, single cable is needed to overcome all these drawbacks. This constitutes a distinct advantage for both the digital entertainment providers — many of whom have already selected this technology — and the home TV distribution market.

Temex SAW Filters are recognized and approved by major chipmakers for satellite reception. High-volume capability and competitive products make Temex the ideal partner for companies seeking an edge in such a highly competitive market.

Temex SCD’s technical advantages are tangible

Temex has designed two sets of filters for this application. Both are compatible with the European Single Cable Distribution standard (Cenelec EN16769) as well as with the Multi-dwelling Unit standard which is currently being studied.

Compared to other filtering technology, and as shown in the table (Filter Set 1 & 2), Temex SAW filters afford the following advantages. First of all, Temex technology offers better frequency selectivity while reducing the size of the units, and while still featuring the mandatory balun function. Second, the technology makes it possible to have up to 12 users on the same, single cable. Finally, a unique wide-band LNB architecture can only be made possible by SAW technology. As can be seen on the block diagram, this implies the simplification of the Ku band section of LNB (a single DRO instead of the traditional pair) and switching matrix (2x4 instead of 4x4). As a result, the total cost of a four-user solution is dramatically reduced. The four-user wide-band solution can be extended to an eight-user solution.

“SAW filter technology is also very well suited to high-volume production. For all these reasons, it will soon be widely used in LNB and switchers,” explains Stéphane Chamaly, Field Applications Engineer at Temex.


Filter set 1 Filter set 2
Centre frequency Temex Reference Centre frequency Temex Reference
1284.00 MHz TMX W030 974.00 MHz TMX U321
1400.00 MHz TMX U331 1076.06 MHz TMX U322
1516.00 MHz TMX U332 1178.12 MHz TMX U323
1632.00 MHz TMX U333 1280.18 MHz under dev.
1748.00 MHz TMX U334 1382.24 MHz TMX U325
TMX W034
1864.00 MHz TMX W035 1484.30 MHz TMX U326
1980.00 MHz TMX W036 1586.36 MHz TMX U327
2096.00 MHz TMX W037 1688.42 MHz Under dev.
1790.48 MHz Under dev.


Temex SCD is easy to ship and use

The French specialist company has paid attention to the issue of availability, and Temex SAW filters are packaged in a traditional 3x3mm hermetically sealed ceramic pack for high-reliability purposes. The use of a passivation coating on top of the electrodes improves the quality of the SAW filters even further. All filters are RoHS-compliant and available in a fully lead-free version.

About Temex

Temex will attend the IBC Exhibition (Booth No8—198) between 8 and 12 September 2006 in Amsterdam (in The Netherlands). IBC is Europe's key annual trade show for media, video and broadcasting professionals. Temex will present its SAW filters and its solutions for both digital and analogue terrestrial TV broadcasting.

Temex is a global, leading designer and manufacturer of total value-added time & frequency management solutions, and a growing supplier to major manufacturers and network operators. The company offers advanced high-performance products, from filter and oscillator components as well as frequency synthesizers to reference clocks, smart GPS timing modules, and test instruments. Temex also offers complete network-synchronization systems that are used in a wide variety of applications industries.

Temex is headquartered in the heart of the high-technology park of Sophia-Antipolis near Nice (in South-Eastern-France). The specialist company also has offices in other European countries, in the USA and in Asia. With an annual turnover of €60 million, the company employs 750 staff across 10 countries.

For more information, go to: www.temex.com



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