B140MB4S Development Board

Introduction

The Dielectric Laboratories / Knowles B140MB4S Development Board is an RF evaluation platform for the B140MB4S SATCOM bandpass filter. It is intended to help engineers assess filter performance in 14 GHz satellite communication designs before committing the device to a production PCB.

Part Description

The B140MB4S Development Board provides a practical environment for evaluating a 14 GHz RF bandpass filter. Its design supports measurement and validation of key filter characteristics, such as insertion loss, return loss, passband behavior, and out-of-band signal rejection.

Built with low-loss, temperature-stable materials, the board is suited to demanding microwave-frequency testing and development work. Its operating temperature range of -55°C to +125°C also makes it relevant for designs that must remain reliable across severe environmental conditions.

As a development board rather than a standalone finished subsystem, it is particularly useful during RF front-end design, SATCOM link development, laboratory characterization, and prototype verification.

Applications

Potential applications for the B140MB4S Development Board include:

• 14 GHz SATCOM terminal development
• Ku-band RF receiver front ends
• Satellite uplink and downlink equipment evaluation
• Microwave filter characterization
• RF signal-conditioning prototypes
• Interference-rejection testing
• High-frequency communications research
• Environmental and temperature-performance validation
• RF subsystem design verification
• Test bench and network analyzer measurements

Industries

Possible industries for this development board include:

• Satellite communications
• Aerospace and defense
• Telecommunications
• Commercial space systems
• Aviation communications
• RF and microwave test equipment
• Scientific research laboratories
• Government and military communications
• Electronic component engineering
• Wireless infrastructure development

Usage Ideas

1. SATCOM Receiver Filter Test Bench
   Connect the board to a vector network analyzer to measure the B140MB4S filter’s insertion loss, return loss, and rejection performance around its intended 14 GHz operating region.

2. Ku-Band Interference Rejection Prototype
   Integrate the development board into a prototype RF receive chain and compare receiver performance with and without filtering in the presence of adjacent-frequency interference.

3. Temperature Performance Evaluation
   Place the board in an environmental test chamber and characterize filter behavior across the -55°C to +125°C operating range for aerospace or outdoor communications designs.

Conclusion

The Dielectric Laboratories / Knowles B140MB4S Development Board is a useful tool for engineers developing 14 GHz SATCOM and microwave RF systems. By providing an accessible platform for evaluating the B140MB4S bandpass filter, it supports faster filter characterization, prototype development, and validation in applications requiring low-loss performance and dependable operation across wide temperature ranges.