ROG Blog
ROG Blog RSS FeedRSS

rog_blog
The Rog Blog is contributed by John Coonrod and various other experts from Rogers Corporation, providing technical advice and information about RF/microwave materials.

Changing Environments Impact Circuit Performance

Not all circuit materials are formulated or characterized for the different sets of environmental conditions required for these many different applications, and circuit materials for high frequency, high speed digital (HSD) circuits for challenging operating environments should be carefully considered. Learn about these effects in this article.


Read More
Boards

Copper Quality Is Key to RF/HSD PCB Performance

While much has been covered in previous blogs about the dielectric material properties of PCBs, knowing more about copper can reveal how it impacts the performance of high frequency analog and high speed digital (HSD) PCBs. Not all PCB copper conductors are created equal.


Read More
3D Printing

3D-Print Antennas with Printable Dielectric Resin

Creating electronic components and circuits with three-dimensional (3D) printers holds great promise for high-frequency-analog and high-speed-digital (HSD) devices. With the right printable electronic materials, 3D printing can form fine feature sizes needed for new levels of dielectric component performance. 


Read More
mmWaves

Dk Testing is Vital to mmWave Circuit Design

Dielectric constant is an important starting point for many circuit designers, whether specifying a printed circuit board (PCB) material for a design or with a material in hand and using its Dk in computer circuit simulations. Especially at higher, mmWave frequencies where wavelengths are short and circuit dimensions must be precise, according to a substrate’s Dk, the accuracy of a circuit material’s Dk can impact the success of a prototype. Learn how to determine it accurately.


Read More
Featured Image

Concerning PCBs and the Transition from Microwaves to Millimeter Waves

As readers learned in the first part of this two-part ROG blog,1 printed circuit boards (PCBs) can be made for millimeter-wave frequencies by considering circuit-material characteristics when making the transition upward from microwave to millimeter-wave circuits. This second part of the blog explores how different circuit technologies often used at microwave frequencies and different circuit materials handle higher-frequency, millimeter-wave circuits.


Read More

How to Transition from Designing for Microwave Frequencies to Millimeter-Wave Frequencies

Higher frequency PCBs require a thoughtful choice of circuit materials well suited for millimeter-wave frequencies and circuit fabrication processes that support those higher frequencies. Part 1 of this blog will explore circuit material characteristics that make them best suited for millimeter-wave frequencies. Part 2 will examine high frequency structures and the fabrication processes that can help them do best at millimeter-wave frequencies.


Read More
Boards

Bonding Materials Minimize Loss in Multilayer Millimeter-Wave PCBs

As the demand grows for circuits serving available frequency spectrum in the mmWave range, circuit designers are meeting those demands using newer low loss circuit materials or hybrid circuits composed of multiple layers of dissimilar circuit materials, such as very low loss circuit materials for higher-speed, higher-frequency circuits and more cost effective circuit materials such as FR-4 for functions such as ground planes, power planes, and control lines not requiring such low loss circuit material.


Read More

Thoughtful Material Choices Can Help Shrink RF Circuits

Smaller is often wiser in this age of electronic mobility and portability, and the choice of circuit material when starting a design has much to do with attempts to create smaller RF and microwave circuits. Circuit materials with higher dielectric constant (Dk) typically yield circuits with smaller features and dimensions for a given frequency range. But the higher Dk values can also result in increased insertion loss and other performance tradeoffs. The Dk value of a circuit material will also impact such circuit parameters as radiation loss, dispersion, and coupling.


Read More