1. What Is a Microstrip Power Divider?

A microstrip power divider is fabricated using PCB (printed circuit board) technology. It typically consists of microstrip lines, branch networks, and resistors. Often based on Wilkinson design principles, microstrip dividers offer good impedance matching and moderate port isolation.

Key Features of Microstrip Power Dividers:

• Compact and lightweight — Ideal for space-limited modules or terminal devices

• Cost-effective — Suitable for mass production and standardized deployment

• Flexible frequency range — Covers UHF, LTE, Wi-Fi, and even 5G

• Moderate insertion loss, acceptable for most low-to-mid power systems

Typical Applications:

• DAS (Distributed Antenna Systems)

• Small cell or microcell base stations

• Vehicle communication modules

• Indoor RF equipment

2. What Is a Cavity Power Divider?

A cavity power divider uses a metal enclosure structure with internal coaxial lines or waveguides. These are designed for extremely low insertion loss and high power handling capabilities, making them suitable for demanding RF environments.

Key Features of Cavity Power Dividers:

• High power capability — Supports hundreds of watts, ideal for macro base stations

• Very low insertion loss — Minimal signal degradation

• Excellent port-to-port isolation and frequency stability

• Larger and more expensive — Best suited for outdoor or infrastructure systems

Typical Applications:

• Cellular base stations

• Broadcast transmission sites

• Satellite communication systems

• Military-grade RF platforms

3. Microstrip vs. Cavity: Comparison Table

4. How to Choose Between Them?

• Choose microstrip power dividers if your design emphasizes compact size, cost efficiency, and integration.

• Choose cavity power dividers when power handling, low loss, and performance stability are critical.

• For 5G systems, use microstrip dividers in indoor or low-power coverage, and cavity dividers in macro cell deployments.