What circuit boards do we do? (38) RO4725JXR High Frequency PCB

Introduction

Antenna-grade laminates of RO4725JXR are composed of a hydrocarbon, ceramic, and woven glass composite. The resin system of the dielectric materials provides essential properties for optimal antenna performance. RO4725JXR is fully compatible with traditional FR-4 and high-temperature lead-free solder processing. Unlike conventional PTFE-based laminates, RO4725JXR does not require special treatment for plated through-hole preparation. This makes it a cost-effective alternative to traditional PTFE-based antenna materials, enabling designers to achieve a balance between cost and performance.

Features

RO4725JXR showcases distinctive attributes:

Low Dielectric Constant: With a precise value of 2.55 ± 0.05 at 10GHz, signal propagation is optimized. Consistent signal transmission and reception are ensured by a stable dielectric constant.

Low Z-axis CTE: Maintaining stability, the coefficient stands at 25.6 ppm/°C, preventing material expansion or contraction amidst temperature fluctuations.

Low TCDk: The +34 ppm/°C TCDk guarantees a stable dielectric constant across varying temperatures.

Low Dissipation Factor: At 10GHz, the 0.0026 dissipation factor minimizes energy loss as heat during signal transmission.

High Tg: With a Tg exceeding 280°C, the material retains its physical properties even under high-temperature conditions.

Reduced PIM Value: Notably, RO4725JXR boasts a reduced passive inter-modulation (PIM) value of -166 dBC, enhancing antenna performance, particularly in high-power scenarios.

PCB Capability

Let's dive into our PCB capabilities, where a vast array of options awaits to cater to every customer's unique requirements

From single-sided to double-sided, multi-layer, and hybrid PCBs, we offer a spectrum of choices suitable for applications ranging from basic electronics to intricate communication systems.

Dielectric thicknesses like 30.7 mil and 60.7 mil are available to suit diverse needs, ensuring flexibility in design and adaptation to varying signal demands.

The copper weight is also adjustable based on your preferences. Whether it's 1oz (35 µm) or 2oz (70 µm), we customize to optimize the PCB's electrical performance.

Our PCBs come in sizes up to 400 mm by 500 mm, perfect for a multitude of applications. The large size allows for the integration of multiple components and systems, providing greater flexibility in design.

We offer a variety of solder mask colors, including green, black, blue, red, yellow, and white among others.

In addition, our PCBs can be finished with a range of surface finishes, such as immersion gold, HASL, immersion silver, immersion tin, bare copper, OSP, ENEPIG, pure gold, and more. These surface finish options enhance the performance and durability of the PCB.

Applications

The RO4725JXR PCB is commonly used in cellular base station antennas.