CLTE-AT uses woven fiberglass for dimensional stability in multilayer designs. Ensures minimal signal loss during transmission, making it ideal for high-frequency applications where signal integrity is critical. It is the commercial version of the CLTE product line and provides excellent value for RF, microwave, and automotive applications.
In this article, we’ll discuss what really characterizes the high frequency Rogers CLTE-AT laminate. The relevant information is available for pcb design engineers to refer to in the selection of materials, And you can also call QFPCB to discuss. QFPCB offers the best services when it comes to the high frequency print circuit board, so please feel free to contact us.
What is the Rogers CLTE-AT laminate?
CLTE-AT laminates use the common building blocks developed with CLTE-XT™ laminates, but with some changes to make the product more affordable. CLTE-AT laminates have “Best-in-Class” Insertion Loss (S21) and Loss Tangent (0.0013) in the commercial marketplace and second only to CLTE-XT laminates. This results in a higher dielectric constant (3.00) and a slightly different thickness than the CLTE-XT laminates. CLTE-AT micro dispersed ceramic PTFE composites utilize a woven fiberglass reinforcement to provide the highest degree of dimensional stability, critical in multilayer designs. CLTE-AT™ laminates represent the commercial version of the CLTE™ product line.
CLTE-AT laminates have Low CTE xyz and Very Low TCEr for applications that require Electrical Phase Stability, Dk Stability, and Mechanical Stability well over a -55 to 150°C Operating Temperature. Rogers’ CLTE-AT laminates were designed to provide a quality peel strength without having to resort to the utilization of the lossier, rougher coppers prevalent in competitive products to achieve acceptable copper adhesion. The higher thermal conductivity of CLTE-AT laminates improve heat transfer relative to alternative materials and enable better power handling. With its ultra-low loss, thermal resilience, and manufacturing-friendly properties, CLTE-AT empowers innovators to design faster, smaller, and smarter solutions without compromising performance.
Rogers CLTE-AT laminate data sheet
Features of the Rogers CLTE-AT laminate
Ultra-Low Loss Tangent (0.0013)
Ensures minimal signal loss during transmission, making it ideal for high-frequency applications where signal integrity is critical. Supports higher data rates with lower power consumption, enhancing overall system performance.
Excellent Thermal Stability of Dk (3.0) and Df (0.0013)
Maintains stable dielectric constant (Dk=3.0) and dissipation factor (Df=0.0013) across temperature variations. Facilitates precise fabrication, crucial for maintaining tight tolerances in advanced electronic designs.
Ceramic/PTFE Microwave Composite
Combines the thermal stability of ceramics with the processability of PTFE for robust performance. Provides a balanced mix of low loss, thermal stability, and mechanical strength.
Lowest Insertion Loss in Commercial Class
Ensures maximum power transfer and signal integrity across microwave and RF systems. Reduces heat generation in conductors, which is particularly beneficial in high-power applications.
High Thermal Conductivity
The high thermal conductivity ensures that heat generated by active components is efficiently dissipated, maintaining optimal operating temperatures. Reduces the risk of overheating, contributing to longer component lifespan and improved reliability under high-power conditions.
Electrical Phase Stability vs Temperature
Maintains performance consistency even in harsh environments, reducing calibration needs. Maintains stable electrical properties across temperature variations, ensuring reliable operation in thermally challenging environments. Minimizes the impact of temperature fluctuations on performance, enhancing overall system reliability.
Excellent CTE in X, Y, and Z Axes
Matches well with copper, minimizing delamination risks and ensuring reliability under thermal cycling. Facilitates precise drilling and routing operations, essential for maintaining tight tolerances in complex designs.
Applications of the Rogers CLTE-AT laminate
The CLTE-AT laminate’s versatility supports a wide range of high-performance applications.
Automotive Radar & Adaptive Cruise Control Applications
Ideal for automotive radar systems requiring high precision and reliability under varying environmental conditions. Enables reliable operation of 77/79 GHz radar systems, where low loss and phase stability are critical for object detection and safety.
Microwave/RF Applications
Suitable for a wide range of microwave and RF applications, from communication systems to industrial equipment. Used in amplifiers, oscillators, and transceivers for telecom, satellite, and defense systems.
Phase/Temperature Sensitive Antennas
Ensures consistent beamforming and signal directionality in phased-array antennas for 5G and aerospace. Essential for antennas needing high phase stability and consistent performance across temperature variations.
Phase Sensitive Electronic Applications
Supports precision timing and filtering in radar, electronic warfare, and IoT devices. Critical for electronic systems requiring precise phase control and minimal timing errors.
RF and Microwave Filters
Delivers sharp roll-off and minimal insertion loss for high-selectivity filtering in communication systems. Necessary for filters needing low insertion loss and high selectivity to function effectively in demanding environments.
Manufacturing advantages of Rogers CLTE-AT laminate
Rogers CLTE-AT offers several advantages that enhance manufacturability and processing efficiency.
Mechanically More Robust and More Dimensionally Stable Than Alternatives
More durable than traditional PTFE-based laminates, reducing warpage and handling risks during fabrication. Demonstrates superior mechanical robustness, reducing the risk of damage during handling and assembly. Ensures more accurate alignment of layers, facilitating the production of complex, multilayer boards.
Tight Dielectric Constant (±0.04) and Thickness Tolerance
Dielectric constant (±0.04) and thickness tolerances ensure predictable impedance control for multilayer PCBs. Provides tighter tolerance control, ensuring consistent performance and minimizing variability between batches. Enhances product quality by reducing the likelihood of defects and inconsistencies.
High Degree of Dimensional Stability Required for Complex, Multilayer Boards
Supports complex, high-density multilayer designs without compromising alignment or reliability. Ensures long-term reliability and performance in sophisticated electronic assemblies, multilayer boards with intricate geometries and tight tolerances.
Rogers CLTE-AT laminate is more than just a material, it’s a strategic enabler for engineers tackling the toughest challenges in RF, microwave, and automotive systems. By choosing Rogers CLTE-AT, manufacturers can achieve superior performance, enhanced safety, and extended product lifetimes while benefiting from excellent price performance value.
