4×4 Butler Matrix
The 4x4 Butler Matrix is a passive RF network designed to generate multiple fixed beam states when used with a four-element antenna array. By applying a signal to one of the beam ports, the network produces equal-amplitude outputs with defined phase progression across the antenna ports, enabling directional radiation without active phase control.
Frequency Range
0.6 to 7.125 GHz
RF Ports
8
Insertion Loss
9 dB
Phase Balance
±9°
Port Isolation
>20 dB
Dimensions
110 x 85 x 10 mm
Key Features
Engineered for precision
The NXBM-4P67 delivers repeatable, high-fidelity RF performance through carefully optimized passive network design.
Passive 4x4 beamforming
Optimized for reliable performance in demanding RF test environments.
Accurate phase and amplitude balance
Optimized for reliable performance in demanding RF test environments.
Instant beam selection
Optimized for reliable performance in demanding RF test environments.
High reliability and low noise
Optimized for reliable performance in demanding RF test environments.
Wide frequency coverage
Optimized for reliable performance in demanding RF test environments.
Target Applications
Passive beamforming networks
The NXBM-4P67 is ideal wherever repeatable spatial signal routing is required without calibration overhead.
Switched beam smart antennas
MIMO system test and simulation
Wireless standards test environments (5G, Wi-Fi)
Multipath simulation
Phased array beamforming and pattern generation
Specifications
Technical Data
Complete performance data for the NXBM-4P67 passive network.
Electrical Characteristics
| Parameter | Min | Typ | Max |
|---|---|---|---|
| Frequency Range (GHz) | 0.6 | — | 7.125 |
| Impedance (Ohms) | — | 50 | — |
| Number of RF Ports | — | 8 (4 beam input ports, 4 antenna output ports) | — |
| Insertion loss (dB) | — | 9 | — |
| 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) | — | 110 x 85 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 4×4 passive matrix enables simultaneous transmission over multiple spatial paths with strictly defined phase differentials.
