8×8 Butler Matrix
The 8x8 Butler Matrix is a passive RF network designed to provide a set of predefined spatial beams for multi-antenna systems. The network distributes RF energy from a selected input port to multiple outputs with defined phase offsets, enabling repeatable beam formation without active control. The architecture supports bidirectional operation and is suitable for controlled spatial signal processing in test and measurement environments.
Frequency Range
2.4 to 8 GHz
RF Ports
16
Insertion Loss
11 dB
Phase Balance
±9°
Port Isolation
>20 dB
Dimensions
130 x 110 x 10 mm
Key Features
Engineered for precision
The NXBM-8P28 delivers repeatable, high-fidelity RF performance through carefully optimized passive network design.
Predefined fixed beam patterns
Optimized for reliable performance in demanding RF test environments.
Passive, bidirectional RF operation
Optimized for reliable performance in demanding RF test environments.
Controlled phase offsets across output ports
Optimized for reliable performance in demanding RF test environments.
Uniform signal distribution characteristics
Optimized for reliable performance in demanding RF test environments.
Broadband implementation for multi-standard testing
Optimized for reliable performance in demanding RF test environments.
Stable and repeatable RF performance
Optimized for reliable performance in demanding RF test environments.
SMA, 50-ohm RF interfaces
Optimized for reliable performance in demanding RF test environments.
Target Applications
Passive beamforming networks
The NXBM-8P28 is ideal wherever repeatable spatial signal routing is required without calibration overhead.
Multi-antenna and beamforming system evaluation
MIMO and spatial channel testing
Over-the-air (OTA) measurement setups
Antenna and beam pattern characterization
RF verification in laboratory and production environments
Specifications
Technical Data
Complete performance data for the NXBM-8P28 passive network.
Electrical Characteristics
| Parameter | Min | Typ | Max |
|---|---|---|---|
| Frequency Range (GHz) | 2.4 | — | 8 |
| Impedance (Ohms) | — | 50 | — |
| Number of RF Ports | — | 16 (8 beam input ports, 8 antenna output ports) | — |
| Insertion loss (dB) | — | 11 | — |
| VSWR | — | 1.5 | — |
| Phase Balance (degrees) | — | ±9 | — |
| Amplitude balance (dB) | — | 3 | — |
| Isolation between ports (dB) | >20 | — | — |
| Maximum RF input power (dBm) | — | +30 | — |
| Temperature | 5 °C | — | 40 °C |
| RF connectors | — | SMA Female | — |
| Form factor | — | Compact and rugged | — |
| Integration | — | Fits lab racks and field systems easily | — |
| Dimensions (mm) | — | 130 x 110 x 10 | — |
Download Resources
Full datasheet with performance graphs, phase diagrams, and mechanical drawings.
Download DatasheetNeed a custom config?
We design custom Butler Matrix configurations for specialised frequency ranges and port dimensions.
Contact engineeringArchitecture
Functional Diagram
The 8×8 passive matrix enables simultaneous transmission over multiple spatial paths with strictly defined phase differentials.
