Butler Matrices

Simulate Real-World Wireless Conditions in your Lab Environment

Mini-Circuits’ high-performance Butler matrices cover the key Wi-Fi and 5G FR1 bands, transferring RF signals bi-directionally from all inputs to all outputs with superior phase accuracy, amplitude unbalance and loss. The design uses high performance passive components with custom phase-matched cables to deliver superb phase and amplitude unbalance across the entire frequency band. All units are 100% tested with highly repeatable performance.

Butler matrices provide precise phase relationships, with a 45˚ offset between each adjacent output for a 4 x 4 matrix and a 22.5˚ phase offset between each adjacent output for an 8 x 8 matrix. This characteristic makes them ideally suited for antenna beam-forming applications and evaluation of 5G & Wi-Fi MIMO transmitter / receivers. Multi-path propagation effects typically seen in over the air transmissions can be conveniently simulated within a lab or production test environment courtesy of the multiple phase paths through the Butler matrix.

Butler Matrices

Model Name	Frequency (MHz)		Inputs	Outputs	Loss (dB)	Phase Increment Between Outputs (˚)	Attenuation Range (dB)	Connectors
Model Name	Low	High	Inputs	Outputs	Loss (dB)	Phase Increment Between Outputs (˚)	Attenuation Range (dB)	Connectors
ZBLR-4X4-0672	600	7250	4	4	7	45	-	SMA
ZBLR-4X4E	2000	8000	4	4	7	45	-	SMA
ZBLR-8X8-0650	600	5000	8	8	12	22.5	-	SMA
ZBLR-8X8E	2400	7200	8	8	10	22.5	-	SMA
ZBLR-8X8-0672	600	7250	8	8	10	22.5	-	SMA

Multi-Channel Attenuators

Programmable attenuation / path loss control for Butler and other n x m matrices
Set individual attenuations or configure fading, sweep, and hop sequences
Precise attenuation control
Ethernet & USB control with automation through Python, LabVIEW and other popular programming languages

Model Name	Frequency (MHz)		Channels	Attenuation Range (dB)	Step Size (dB)	Input Power (dBm)	Form Factor	Connectors	Control
Model Name	Low	High	Channels	Attenuation Range (dB)	Step Size (dB)	Input Power (dBm)	Form Factor	Connectors	Control
RC4DAT-8G-95PE	1	8	4	95	0.25	28	Module	SMA	USB & LAN (PoE)
RC4DAT-8G-120H	100	8	4	120	0.05	28	Module	SMA	USB & LAN & Daisy-Chain
RC8DAT-8G-95PE	1	8	8	95	0.25	28	Module	SMA	USB & LAN (PoE)
ZT16DAT-8G95S	1	8000	16	95	0.25	-	1U chassis	SMA	USB & LAN & Daisy-Chain
ZT8DAT-8G95SF	1	8000	8	95	0.25	-	1U chassis	SMA	USB & LAN & Daisy-Chain