Bottom-Ported Omnidirectional MEMS Microphone

As the demand for compact, high-performance audio solutions grows across smart devices, bottom-ported omnidirectional MEMS microphones have become essential components in today’s electronics. At Wuxi Silicon Source Technology Co., Ltd. (SISTC), we provide advanced MEMS microphones designed for clear, reliable, and 360-degree audio capture—perfect for wearables, smartphones, smart speakers, and IoT devices.

What Is a Bottom-Ported Omnidirectional MEMS Microphone?

A bottom-ported MEMS microphone has its acoustic port located on the underside of the package, allowing sound to enter through a hole in the PCB. This orientation offers easier integration in space-constrained designs and ensures more consistent acoustic performance.

Being omnidirectional, this microphone type captures sound from all directions, making it ideal for far-field voice control, ambient sound recording, and multi-mic array configurations.

Key Features and Benefits

Omnidirectional Pickup Pattern: Captures clear sound from all directions—ideal for voice assistants and video conferencing.
Bottom-Ported Design: Simplifies PCB routing and enables a more compact and robust enclosure design.
High Signal-to-Noise Ratio (SNR): Ensures low background noise and excellent clarity.
Low Power Consumption: Perfect for battery-powered IoT devices and wearables.
Compact Footprint: Suitable for ultra-thin consumer electronics.

Explore our product line here:
🔗 Digital MEMS Microphones
🔗 All MEMS Microphone Products

Applications

Smartphones & Tablets
Wearable Devices
Smart Home Products (voice-activated assistants, smart remotes)
Hearing Aids & Health Monitoring
Industrial Voice Control Systems

Integration Tips

When designing with a bottom-ported omnidirectional MEMS microphone, ensure proper sealing around the port and avoid blocking the acoustic path. A clean and well-defined opening in the PCB helps maintain a flat frequency response and consistent performance.

Industry Insights & Resources

Learn more about MEMS microphone design from industry leaders:

Why Choose SISTC?

At SISTC, we specialize in MEMS microphone solutions that combine cutting-edge CMOS/MEMS technology with ultra-low power consumption and high reliability. With broad experience in acoustics, electronics, and intelligent hardware, our R&D team delivers solutions trusted by global OEMs.