# US 10,374,726 B2 · Rack level pre-installed interconnect for enabling cableless server/storage/networking deployment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,726 B2 - Document ID: US10374726B2 - Status: Granted - Kind: B2 - Application number: 15/874,499 - Filed: 2018-01-18 - Published: 2018-07-26 - Granted: 2019-08-06 - Earliest claimed: 2014-03-27 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Matthew J. Adiletta; Aaron Gorius; Myles Wilde; Hugh Wilkinson; Amit Y. Kumar - Web page: https://patentgrep.com/patent/US10374726B2 ## CPC - H04B 10/803: {Free space interconnects, e.g. between circuit boards or chips} - H01P 3/10: Wire waveguides, i.e. with a single solid longitudinal conductor - H01P 5/00: Coupling devices of the waveguide type - H01P 5/02: with invariable factor of coupling (H01P5/12 takes precedence {choke joints H01P1/04, H01P1/06}) - H04B 1/40: Circuits - H04B 3/52: Systems for transmission between fixed stations via waveguides - H04B 10/40: Transceivers - H04B 10/90: Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation - H04L 49/40: Constructional details, e.g. power supply, mechanical construction or backplane - H04Q 11/0066: {Provisions for optical burst or packet networks} - H01P 5/028: {between strip lines} - H04B 5/20: characterised by the transmission technique; characterised by the transmission medium - H04Q 2011/0052: {Interconnection of switches} - H04B: TRANSMISSION - H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04Q: SELECTING (switches, relays, selectors H01H; wireless communication networks H04W) ## Abstract Apparatus and methods for rack level pre-installed interconnect for enabling cableless server, storage, and networking deployment. Plastic cable waveguides are configured to couple millimeter-wave radio frequency (RF) signals between two or more Extremely High Frequency (EHF) transceiver chips, thus supporting millimeter-wave wireless communication links enabling components in the separate chassis to communicate without requiring wire or optical cables between the chassis. Various configurations are disclosed, including multiple configurations for server chassis, storage chassis and arrays, and network/switch chassis. A plurality of plastic cable waveguide may be coupled to applicable support/mounting members, which in turn are mounted to a rack and/or top-of-rack switches. This enables the plastic cable waveguides to be pre-installed at the rack level, and further enables racks to be installed and replaced without requiring further cabling for the supported communication links. The communication links support link bandwidths of up to 6 gigabits per second, and may be aggregated to facilitate multi-lane links. ## Claims ### Claim 1 A method, comprising: installing a first removable chassis in a first slot in a first rack, the first removable chassis having a first component disposed therein to which a first extremely high frequency (EHF) transceiver chip is electrically coupled; installing a second removable chassis in a second slot in one of the first rack and a second rack, the second removable chassis having a second component disposed therein to which a second EHF transceiver chip is electrically coupled; coupling a plastic cable waveguide to the first rack if the first and second removable chassis are installed in the first rack or to at least one of the first rack and the second rack if the first and second removable chassis are respectively installed in the first rack and the second rack, the plastic cable waveguide configured to couple millimeter-wave radio frequency (RF) signals outputted from the first EHF transceiver chip into the plastic cable waveguide and to communicatively couple the millimeter-wave RF signals to the second EHF transceiver chip; and facilitating communication between the first and second components by transmitting the millimeter-wave RF signals from the first EHF transceiver chip to the second EHF transceiver chip via the plastic cable waveguide, wherein when the first removable chassis is installed in the first slot, the plastic cable waveguide is not mechanically coupled to either the first chassis or any component within the first chassis. ### Claim 2 (depends on 1) The method of claim 1, wherein the first and second chassis are installed in the first rack. ### Claim 3 (depends on 1) The method of claim 1, wherein the first and second chassis are respectively installed in the first rack and the second rack. ### Claim 4 (depends on 1) The method of claim 1, wherein the first and second EHF transceiver chips use a 60 GHz carrier frequency. ### Claim 5 (depends on 1) The method of claim 1, wherein the communication between the first and second components has a bandwidth of 6 gigabits per second. ### Claim 6 (depends on 1) The method of claim 1, wherein the millimeter-wave RF signals are transmitted via the plastic cable waveguide by transmitting millimeter-wave RF signals from an antenna of the first EHF transceiver chip toward a first end of the plastic cable waveguide, wherein the first end is configured to couple the millimeter-wave RF signals into the plastic cable waveguide. ### Claim 7 (depends on 1) The method of claim 1, wherein the plastic cable waveguide includes a dielectric manifold that is configured to couple the millimeter-wave RF signals between the plastic cable waveguide and one of the first and second EHF transceiver chips. ### Claim 8 (depends on 1) The method of claim 1, further comprising facilitating a bi-directional communication link between the first and second EHF transceiver chips via the plastic cable waveguide. ### Claim 9 (depends on 1) The method of claim 1, wherein the second component includes a third EHF transceiver chip electrically coupled thereto, and wherein the plastic cable waveguide includes at least a first, second, and third leg along a portion of a length thereof, the first, second and third legs respectively disposed proximate to the first, second, and third EHF transceiver chips, the method further comprising: coupling the millimeter-wave RF signals outputted from the first EHF transceiver chip into each of the second and third EHF transceiver chips; and coupling millimeter-wave RF signals outputted by each of the second and third EHF transceiver chips into the first EHF transceiver chip. ### Claim 10 An apparatus comprising: a first chassis, configured to be installed in a first slot in a rack, including a first component contained therein having a first extremely high frequency (EHF) transceiver chip electrically coupled thereto; a second chassis, configured to be installed in a second slot in the rack, including a second component contained therein having a second EHF transceiver chip electrically coupled thereto; and a first plastic waveguide, operatively coupled to at least one of the first chassis, the second chassis, and the rack, having a first end proximate to the first EHF transceiver chip and a second end proximate to the second EHF transceiver chip, wherein the first plastic waveguide is configured to facilitate a bi-directional millimeter-wave communication link between the first and second EFH transceiver chips when the first and second components are operating, and wherein the first plastic waveguide is not mechanically coupled to any of the first component, the second component, the first EHF transceiver chip and the second EHF transceiver chip. ### Claim 11 (depends on 10) The apparatus of claim 10, further wherein the first EHF transceiver chip is located within a chassis frame of the first chassis, and the chassis frame includes a hole proximate to the first EHF transceiver chip that is configured to enable millimeter-wave RF signals transmitted from and received by the first EHF transceiver chip to be passed through the hole. ### Claim 12 (depends on 10) The apparatus of claim 10, wherein the first component comprises a network interface component or network adaptor. ### Claim 13 (depends on 10) The apparatus of claim 10, wherein the first component comprises a server blade or server module to which the first EHF transceiver chip is electrically coupled. ### Claim 14 (depends on 10) The apparatus of claim 10, wherein the first component comprises a backplane to which the first EHF transceiver chip is mounted. ### Claim 15 (depends on 10) The apparatus of claim 10, wherein the first and second EHF transceiver chips use a 60 GHz carrier frequency. ### Claim 16 An apparatus, comprising: a chassis frame including a metal top plate in which a plurality of holes are formed; a backplane, mounted to the chassis frame proximate to the metal top plate, having a plurality of extremely high frequency (EHF) transceiver chips mounted thereto, wherein the plurality of EHF transceiver chips are aligned with the plurality of holes formed in the metal top plate; and at least one plastic waveguide having a plurality of legs, each leg disposed proximate to a respective EHF transceiver chip, wherein upon operation of the apparatus, millimeter-wave radio frequency (RF) signals transmitted from each EHF transceiver chip is coupled into the at least one plastic waveguide via the leg that is disposed proximate to the EHF transceiver chip. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the backplane further comprises switching circuitry that is communicatively coupled to the plurality of EHF transceiver chips and a plurality of network connectors commutatively coupled to the switching circuitry. ### Claim 18 (depends on 16) The apparatus of claim 16, wherein at least one of the plurality of the legs extends through a respective hole in the metal top plate. ### Claim 19 (depends on 16) The apparatus of claim 16, wherein the plurality of EHF transceiver chips are configured in a plurality of rows, and the apparatus further comprises a respective plastic waveguide having a plurality of legs for each row, wherein each leg of the respective plastic waveguide is disposed proximate to a respective EHF transceiver chip in the row. ### Claim 20 An apparatus comprising: a rack, having a plurality of chassis slots configured to have removable chassis installed therein, including first and second chassis slots; a plurality of pre-installed plastic waveguides, coupled to the rack, having a first set of means for coupling millimeter-wave radio frequency (RF) signals arranged in a first pattern, and a second set of means for coupling millimeter-wave RF signals arranged in a second pattern, wherein the first set of means for coupling millimeter-wave RF signals are arranged such that when a first chassis having a first set of extremely high frequency (EHF) transceiver chips arranged in the first pattern is installed in the first chassis slot, a means for coupling millimeter-wave RF signals in the first set of means for coupling millimeter-wave RF signals is disposed proximate to a respective EHF transceiver chip in the first set of EHF transceiver chips; wherein the second set of means for coupling millimeter-wave RF signals are arranged such that when a second chassis having a second set of extremely high frequency (EHF) transceiver chips arranged in the second pattern is installed in the second chassis slot, a means for coupling millimeter-wave RF signals in the second set of means for coupling millimeter-wave RF signals is disposed proximate to a respective EHF transceiver chip in the second set of EHF transceiver chips; and wherein the plurality of pre-installed plastic waveguides are configured to facilitate a bi-directional millimeter-wave communication links between EHF transceiver chips in the first set of EHF transceiver chips and EHF transceiver chips in the second set of EHF transceiver chips when the first and second set of EHF transceiver chips are operating. ### Claim 21 (depends on 20) The apparatus of claim 20, wherein at least a portion of the first set of means for coupling millimeter-wave RF signals of the plurality of pre-installed plastic cable waveguides comprise dielectric manifolds that are configured to couple the millimeter-wave RF signals transmitted from and received by respective EHF transceiver chips in the first set of EHF transceiver chips that are proximate to respective dielectric manifolds.