The ACM Division of Rogers introduced two new laminates to the market at the IEEE Radio & Wireless Week Expo. The new products are geared for design engineers who need high speed or reliability for double-sided or multi-layer printed circuit boards (PCBs).  The new products are:  XT/duroid™ 8000 series high performance, halogen-free thermoplastic laminate materials and RT/duroid® 6035HTC high thermal conductivity laminates.

Let’s break this down a little…

About XT/duroid 8000 Series Thermoplastic Laminates

XT/duroid8100

XT/duroid 8100

The 8000 series covers the range for simple multilayer designs, up to 6 layers or more.  Both dielectric constant and dissipation factor are stable over a wide range of frequencies.

Features:

  • Thermally stable design with a melt temperature higher than PTFE materials
  • Stable dielectric constant and dissipation factor over a wide frequency range for high reliability and uniform electrical properties over frequency
  • Higher operating temperature and can be used in applications where high temperature stability is necessary
  • Excellent chemical resistance for ease of processing, and resistant to solvents and reagents used to process circuit boards.
  • Environmentally friendly, Halogen free, is inherently flame retardant, Lead-free solder capable with low smoke/toxicity

Typical Applications:

  • Flex-to-install applications
  • Conformal circuitry
  • Lightweight feed manifolds
  • Oil and gas exploration
  • Semiconductor burn-in

Visit the ACM web site and download data sheets for the XT/duroid 8000 and 8100 laminates

About RT/duroid 6035HTC Laminates

RT/duroid 6035HTC high frequency circuit materials are ceramic filled PTFE composites for use in high power RF and microwave applications. With a thermal conductivity of almost 2.4 times the standard RT/duroid 6000 products, and copper foil (ED and reverse treat) with excellent long term thermal stability, RT/duroid 6035HTC laminates are an exceptional choice for high power applications.

Features:

  • High thermal conductivity with improved dielectric heat dissipation, enabling lower operating temperatures for high power applications
  • Low loss tangent for excellent high frequency performance
  • Thermally stable low profile and reverse treated copper foil for lower insertion loss and excellent thermal stability of traces
  • Advanced filler system that improves drillability and extended tool life compared to alumina-containing circuit materials
RT/duroid 6035HTC Laminates

RT/duroid 6035HTC Laminates

Typical applications:

  • High power RF and microwave amplifiers
  • Power amplifiers, couplers, filter, combiners and power dividers

Visit the ACM web site and download data sheets with comparison charts for RT/duroid 6035HTC High Frequency Laminates

For more information, visit ACM High Frequency Laminates.

This post authored by John Coonrod originally appeared on the RogBlog hosted by Microwave Journal

Microstrip or stripline? That choice has been faced by high frequency designers for decades. Both transmission-line technologies are widely used in both active and passive microwave circuits, with excellent results. Is one approach better than the other? Before tackling such a question, it might help to know how each transmission-line technology works and what kind of demands each place on a printed circuit board (PCB) material.

Microstrip is a transmission-line format in which the conductor is fabricated on a dielectric substrate which itself has a bottom ground-plane layer. Conductors are usually formed by etching away unwanted metal from a conductor layer, such as copper.

Stripline is often compared to a flattened coaxial cable in that, like the cable, it consists of an inner conductor completely surrounded by dielectric material which is itself surrounded by a ground braid or foil. Of course, stripline circuits are planar, so that they appear as a sandwich of conductors in the middle, surrounded by dielectric layers, which in turn have parallel ground planes on the top and bottom.

Continue reading the full article on the Rog-Blog

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This post originally appeared on Roger’s PORON Cushioning Blog

Anurag Tihaiya, Rogers Corporation, Product Development High Performance Foams Division, provides a closer look at the development of the new generation of PORON® ReSource…

Q: Why did Rogers Corporation decide to develop a more sustainable product at this time?

Our commitment to sustainable practices and developing new materials in a responsible way has been the cornerstone of Rogers’ business operations since the beginning. Today, all Rogers’ products are free of latex, PVCs, VOCs and heavy metals. Further, Rogers is continually working to identify and develop new materials and formulations that meet the high standards of performance our customers demand, while reducing the environmental impact of these products whenever possible.

The 1st generation of PORON ReSource Cushioning contained a total of 20% ‘green’ content that consisted of 10% ground PORON scrap material and 10% soy-based polyol.  Today, the latest PORON ReSource material has been further refined, through several years of focused research and development, to contain 45% less petroleum based polyols – currently the highest replacement value available today.

Continue reading the Q&A on the PORON Cushioning Blog

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This post authored by John Coonrod originally appeared on the RogBlog hosted by Microwave Journal

Isn’t designing a microwave filter as simple as loading parameters into a computer-aided-engineering (CAE) program? In truth, many modern CAE software tools are quite good, and can provide accurate predictions of performance when fed sufficient input data. However, most do not account for all variables influencing a high frequency filter, including the effects of anisotropic printed-circuit-board (PCB) materials. When designing RF and microwave filters, it helps to choose your PCB material wisely.

High frequency filters come in many forms, based on lowpass, highpass, bandpass, and band-reject responses. As their names suggest, they are designed to operate at specific frequencies or bands of frequencies, to allow some signals to pass with minimal loss and stop other signals with high attenuation. Modern cellular telephones, for example, rely on filters to separate different cellular frequency bands within a handheld transceiver. Because of the growing integration of multiple functions in electronic devices, such as Bluetooth receivers and Global Positioning System (GPS) receivers in cellular telephones, filter designers are being asked to develop improved performance but in smaller circuits. As filters are made smaller and packed more closely together on a PCB, the choice of PCB material becomes a critical step in achieving acceptable filter performance.

Read the entire article here

This post originally appeared on Roger’s PORON Cushioning Blog

Dr. Oz and a guest podiatrist, Dr. Jacqueline Sutera, look at the effect of high heels and review two possible solutions, including the incorporation of PORON Cushioning, which never loses its shape, and provides cushioning and shock absorption for your feet.

Original Air Date Oct 20, 2010, (rerun on December 28, 2010).

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