Techniques including controlling coupling and uncoupling of RF ports included in an RF switch matrix including first-side RF ports and second-side RF ports, where each of the first-side RF ports is configured to be selectively coupled to at least one of two or more of the second-side RF ports, identifying one or more of the second-side RF ports as active ports including an active port, causing the RF switch matrix to couple the active port to a signal port included in the first-side RF ports, obtaining at least one of a bit error rate and a signal to noise ratio for a demodulation of an RF stream received via the active port, and causing, in response to at least one of the bit error rate or the signal to noise ratio, the RF switch matrix to couple the signal port to a spare port included in the second-side RF ports.

An electrical switch circuit adapted to switch digital, high-speed signals with low power includes a plurality of input buffers each coupled to an input transmission line of a plurality of input transmission lines, wherein each input buffer utilizes a digital inverter; a plurality of output buffers each coupled to an output transmission line of a plurality of output transmission lines, wherein each output buffer utilizes a digital inverter; and a plurality of switches each coupled to an associated input transmission line and an associated output transmission line, wherein each of the input transmission line, the output transmission line, and the plurality of switches are in a single line configuration. For the low power, each of the input buffers, the output buffers, the input transmission lines, and the output transmission lines can be unterminated.

A semiconductor circuit is provided having a crossbar switch arrangement, which includes at least one multiplexer, an output of which corresponds to an output of the crossbar switch arrangement. The arrangement also includes: a set of input lines connected to data inputs of the multiplexer, the input lines extending along a first direction of the semiconductor circuit; and a set of select lines connected to select inputs of the multiplexer, the select lines extending along a second direction of the semiconductor circuit, where the second direction differs from the first direction. The multiplexer includes at least one multiplexing circuit for generating a multiplexed signal from signals present at the input lines and at least one primary output driver for generating an output signal from the multiplexed signal.

A method of operating an RF system, the method including controlling coupling and uncoupling of RF ports included in an M by N radio frequency (RF) switch matrix including N first-side RF ports and M second-side RF ports, wherein each of the first-side RF ports may be selectively coupled to at least one of two or more of the second-side RF ports, such that RF signals are carried between selectively coupled ports; identifying one or more of the second-side RF ports as active ports, the active ports including a first active port; causing the RF switch matrix to couple the first active port to a first signal port included in the first-side RF ports; obtaining a first indication of reduced performance for a first piece of RF communication equipment coupled to the first active port; and causing, in response to the first indication, the RF switch matrix to couple the first signal port to a first spare port, wherein the first spare port is included in the second-side RF ports and is not included in the active ports.

A crosspoint switch matrix may include a plurality of point cells provided at intersections between a plurality of input pathways and a plurality of output pathways. The input pathways may be partitioned into groups, each group defined by a demultiplexer that forwards an input signal to the point cells within the group and/or to a demultiplexer of a succeeding group. The output pathways may be partitioned into groups, each group defined by a multiplexer that forwards a signal from an active point cell to an output of the matrix. Multiplexers of groups in intermediate positions between the point cell and the matrix output may relay the output signal between the multiplexers along a bypass pass. When both the input pathways and output pathways are so partitioned, each point cell may be a member of one input pathway group and one output pathway group.

Methods and apparatuses for enhancing flatness of frequency response of couplings of radio frequency (RF) ports in an RF switch matrix. Techniques include determining a second RF port has been selected to be coupled to a first RF port via a coupling, obtaining an indication of a frequency or frequencies to be carried via the coupling, determining an amount of attenuation or amplification for the coupling for the frequency or frequencies, and adjusting attenuation or amplification applied to the coupling according to the determined amount attenuation or amplification.

An electrical switch circuit adapted to switch digital, high-speed signals with low power includes a plurality of input buffers each coupled to an input transmission line of a plurality of input transmission lines, wherein each input buffer utilizes a digital inverter; a plurality of output buffers each coupled to an output transmission line of a plurality of output transmission lines, wherein each output buffer utilizes a digital inverter; and a plurality of switches each coupled to an associated input transmission line and an associated output transmission line, wherein each of the input transmission line, the output transmission line, and the plurality of switches are in a single line configuration. For the low power, each of the input buffers, the output buffers, the input transmission lines, and the output transmission lines can be unterminated.

A method including determining that a first radio frequency (RF) port has been selected to be coupled via an M by N RF switch matrix to a second RF port, wherein the M by N radio frequency (RF) switch matrix includes M first-side RF ports and N second-side RF ports, the first RF port is included in the M first-side RF ports, the second RF port is included in the N second-side RF ports, M is at least 2 and N is at least 2, and each of the first-side RF ports may be selectively coupled to and uncoupled from at least one of two or more of the second-side RF ports, such that RF signals are carried between selectively coupled RF ports; obtaining a first indicator indicating a frequency, frequency range, channel, or band for an RF signal to be carried via the second RF port while coupled to the first RF port; obtaining, in response to the determination that the first RF port has been selected to be coupled to the second RF port, a first adjustment value based on the first indicator, the first RF port, and the second RF port; and causing a first amplitude adjustment device configured to attenuate and/or amplify an RF signal as it passes through the first RF port or the second RF port with a selectable amount of attenuation and/or amplification to select a first amount of attenuation and/or amplification determined based on the first adjustment value.

A crosspoint switch matrix may include a plurality of point cells provided at intersections between a plurality of input pathways and a plurality of output pathways. The input pathways may be partitioned into groups, each group defined by a demultiplexer that forwards an input signal to the point cells within the group and/or to a demultiplexer of a succeeding group. The output pathways may be partitioned into groups, each group defined by a multiplexer that forwards a signal from an active point cell to an output of the matrix. Multiplexers of groups in intermediate positions between the point cell and the matrix output may relay the output signal between the multiplexers along a bypass pass. When both the input pathways and output pathways are so partitioned, each point cell may be a member of one input pathway group and one output pathway group.

A method including determining that a first radio frequency (RF) port has been selected to be coupled via an M by N RF switch matrix to a second RF port, wherein the M by N radio frequency (RF) switch matrix includes M first-side RF ports and N second-side RF ports, the first RF port is included in the M first-side RF ports, the second RF port is included in the N second-side RF ports, M is at least 2 and N is at least 2, and each of the first-side RF ports may be selectively coupled to and uncoupled from at least one of two or more of the second-side RF ports, such that RF signals are carried between selectively coupled RF ports; obtaining a first indicator indicating a frequency, frequency range, channel, or band for an RF signal to be carried via the second RF port while coupled to the first RF port; obtaining, in response to the determination that the first RF port has been selected to be coupled to the second RF port, a first adjustment value based on the first indicator, the first RF port, and the second RF port; and causing a first amplitude adjustment device configured to attenuate and/or amplify an RF signal as it passes through the first RF port or the second RF port with a selectable amount of attenuation and/or amplification to select a first amount of attenuation and/or amplification determined based on the first adjustment value.