THE BUTLER MATRIX FOR A DECIMETRIC BAND

THE BUTLER MATRIX FOR A DECIMETRIC BAND

            This product is a relatively compact realization of a well-known Butler matrix.  Technical characteristics achieved in this design make it possible to do frequency-independent multibeam antenna arrays with a high resolution and a low sidelobe pattern.

This Butler matrix provides acceptable characteristics for many practical applications in an extended frequency band from 650 to 1100 MHz.

A concept founded in this design and existing detail parts allow to build similar products for higher frequencies (to 5-6 GHz).

SPECIFICATION

            I/O numbers                                                            32×32;

Working frequency range                                                   820-900 MHz;

Dissipative loss                                                                     < 2 dB;

Mean-square gain deviation:

Magnitude                                                                              < 0.5 dB;

Angle                                                                                       < 4 deg;

Dimensions                                                                              440x210x90 mm.