Microphonics suppression in high-speed communications systems

A method for suppressing microphonics in an outdoor unit of a split-mount wireless radio system, the outdoor unit comprising a cover, a base, and an intermediate frequency (IF) assembly comprising an IF control board enclosed by an electromagnetic shield, comprising:

• providing a support structure for the IF assembly on the base, the support structure including:
• an isolation component shaped to support the assembly and being operative to provide a soft mount for the assembly, the isolation component including a molded isolator shaped as two stacked rings of different outer diameter and same inner diameter, the molded isolator having an L-shaped vertical cross section, and
• a standoff operatively coupled to the isolation component and shaped to provide mechanical support for the isolation component and assembly on the base, the standoff comprising a body and a stem, the body being wider than the stem to create a shoulder on which the isolation component can rest, the stem having a threaded mounting hole extending partially or entirely through its length and adapted to receive a mounting screw for securing the isolation component and the assembly;
• resting the assembly on the support structure;
• and
• securing the assembly to the support structure.

A method for suppressing microphonics in an outdoor unit of a split-mount wireless radio system, the outdoor unit comprising a cover, a base, and an intermediate frequency (IF) assembly comprising an IF control board enclosed by an electromagnetic shield, comprising:

• providing a support structure for the IF assembly on the base, the support structure including:
• isolation components each of which being shaped to support the assembly and being operative to provide a soft mount for the assembly, the isolation component including a molded isolator shaped as two stacked rings of different outer diameter and same inner diameter, the molded isolator having an L-shaped vertical cross section, and
• standoffs each of which being shaped to provide mechanical support for one of the isolation components, the standoff comprising a body and a stem, the body being wider than the stem to create a shoulder on which the isolation component can rest, the stem having a threaded mounting hole extending partially or entirely through its length and adapted to receive a mounting screw for securing the isolation component and the assembly;
• mounting the isolation components on the standoffs;
• mounting the assembly on the isolation components;
• and
• mounting the standoffs to the base.

An outdoor unit of a split-mount wireless radio system with microphonic suppression, comprising:

• an intermediate frequency (IF) assembly comprising an IF control board enclosed by an electromagnetic shield;
• means for microphonics suppression of the IF assembly, the means comprising an isolation component including a molded isolator shaped as two stacked rings of different outer diameter and same inner diameter, the molded isolator having an L-shaped vertical cross section;
• the means further comprising a standoff including a body and a stem, the body being wider than the stem to create a shoulder on which the isolation component can rest, the stem having a threaded mounting hole extending partially or entirely through its length and adapted to receive a mounting screw for securing the isolation component and the assembly;
• a cover;
• and
• an echo damping pad adhered to an underside of the cover.