US 2026/0291481 A1 · SWITCH MATRIX WITH HIGH RADIO FREQUENCY ISOLATION UTILIZING DUAL MECHANICAL MICRO-MEMBRANE ACTUATORS

Abstract

The technology described herein is directed towards a (e.g., 2×2) mechanical micro-actuator-based RF switch matrix including six switches, that allows non-blocking signal routing between any two available RF ports. In one implementation, there are four single-membrane actuators and two dual-membrane actuators. A crossover design with a tuned permittivity patch provides isolation between intersecting RF lines, allowing simultaneous signal transmission without significant interference. The switch matrix device based on mechanical micro-actuator switches is designed for high isolation between RF transmission paths, including using the crossover and the combination of single and dual-membrane actuators. As a result, the switch matrix achieves effective isolation between RF lines, enabling non-blocking, dynamic routing of signals across any available input and output ports. Through-substrate interconnects help reduce RF and DC interference, providing a scalable solution to address challenges in insertion loss consistency and isolation performance in RF switch matrices.

Claims20

Dependent claims

A device, comprising:

a radio frequency (RF) switch matrix, comprising:
RF ports;
and
a group of mechanical micro-actuator-based switches coupled to the RF ports, wherein application of first respective voltages selectively controlled by a controller determines an operational state of the RF switch matrix, corresponding to a first subgroup of respective mechanical micro-actuator-based switches controlled to be in actuated states, and a second subgroup of respective mechanical micro-actuator-based switches controlled to be in de-actuated states, and
wherein the operational state electrically couples a first RF port of the RF ports to a fourth RF port of the RF ports.

2 more elements

A method, comprising:

electrically coupling, by a system comprising at least one processor, a first radio frequency (RF) port of an RF switch matrix to one or more selectable RF ports other than the first RF port, wherein the first RF port is electrically coupled to the one or more selectable RF ports via mechanical micro-actuator-based switch sets between the first RF port and the one or more selectable RF ports, the electrically coupling comprising:
determining which of the one or more selectable RF ports to electrically couple to the first RF port;
for each selectable RF port determined to be one to electrically couple to the first RF port,
controlling the mechanical micro-actuator-based switch set corresponding to the selectable RF port to be in an actuated state that electrically couples the selectable RF port to the first port;
and
for each selectable RF port determined not to be one to electrically couple to the first RF port,
controlling the mechanical micro-actuator-based switch set corresponding to the selectable RF port to be in a de-actuated state that electrically decouples the selectable RF port from the first RF port.

4 more elements

A switch matrix, comprising:

a group of RF ports comprising a first port, a second port, a third port, and a fourth port;
respective mechanical micro-actuator-based switch sets comprising a respective first switch, a respective second switch, a respective third switch, a respective fourth switch, a respective fifth switch, and a respective sixth switch;
wherein the respective mechanical micro-actuator-based switch sets are controlled by respective applied voltage sets to at least one of:
set the respective sixth switch to a respective sixth actuated state to electrically couple the first RF port to the fourth RF port to obtain a first signal path;
set the respective third switch to a respective third actuated state to electrically couple the second RF port to the third RF port to obtain a second signal path;
set the respective first switch to a respective first actuated state and set the respective fourth switch to a respective fourth actuated state to electrically couple the first RF port to the third RF port to obtain a third signal path;
or
set the respective second switch to a respective second actuated state and set the respective fifth switch to a respective fifth actuated state to electrically couple the second RF port to the fourth RF port to obtain a fourth signal path.

5 more elements

Dependencies are inferred from the claim text.

Switch matrix with high radio frequency isolation utilizing dual mechanical micro-membrane actuators

Life of this patent

Switch matrix with high radio frequency isolation utilizing dual mechanical micro-membrane actuators

Life of this patent

Abstract

Claims20