# US 11,442,158 B2 · Multiple input multiple output imaging array and corresponding imaging method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,158 B2 - Document ID: US11442158B2 - Status: Granted - Kind: B2 - Application number: 16/529,367 - Filed: 2019-08-01 - Published: 2021-02-04 - Granted: 2022-09-13 - Earliest claimed: 2019-08-01 - Assignees: Rohde & Schwarz GmbH & Co. KG - Applicants: Rohde & Schwarz GmbH & Co. KG - Inventors: Tobias Koeppel; Frank Gumbmann; Benedikt Simper; Andreas Schiessl - Web page: https://patentgrep.com/patent/US11442158B2 ## CPC - G01S 13/42: Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S13/46) - G01S 13/4418: {with means for eliminating radar-dependent errors in angle measurements, e.g. multipath effects} - G01S 7/282: Transmitters - G01S 7/285: Receivers - G01S 13/003: {Bistatic radar systems; Multistatic radar systems} - G01S 13/878: {Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector (G01S13/874 takes precedence)} - G01S 13/89: for mapping or imaging - H01Q 3/02: using mechanical movement of antenna or antenna system as a whole - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A multiple input multiple output imaging array for incident angle resolved images with respect to a device under test is provided. The multiple input multiple output imaging array comprises a redundant array of transmit and receive antennas and a controller. In this context, the controller is configured to implement a selection scheme, wherein the selection scheme selects the respective transmit and receive antenna pairs used to create the corresponding image. ## Claims ### Claim 1 A multiple input multiple output millimeter wave imaging array for incident angle dependent millimeter wave images with respect to a device, the multiple input multiple output millimeter wave imaging array comprising: a redundant array of transmit and receive millimeter wave antennas, and a controller, wherein the controller is configured to implement a selection scheme, wherein the selection scheme selects respective transmit and receive millimeter wave antenna pairs for creating a corresponding millimeter wave image, wherein the redundant array is redundant with respect to one dimension, and wherein the device and/or the redundant array is mechanically moved to create a synthetic two-dimensional redundant array over time. ### Claim 2 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein the selection scheme is based on the desired incident angle which will be used to create the corresponding image. ### Claim 3 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein the transmit and receive millimeter wave antennas are disposed such that the transmit and receive millimeter wave antennas are approximately at the incident angle from one another from a respective specular point. ### Claim 4 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein a collection of the respective transmit and receive millimeter wave antenna pairs forms an array creating a distortion and/or alias minimized image. ### Claim 5 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein the controller is configured to reconstruct the corresponding image based on a densely sampled array. ### Claim 6 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein on the basis of a collection of the respective transmit and receive millimeter wave antenna pairs forming an array creating a distortion and/or alias minimized image, the controller is configured to reconstruct the corresponding image based on a corresponding sampled array. ### Claim 7 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein the redundant array is redundant with respect to at least one dimension. ### Claim 8 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein the device comprises a radome. ### Claim 9 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein the redundant array comprises at least one gap. ### Claim 10 (depends on 9) The multiple input multiple output millimeter wave imaging array according to claim 9, wherein the controller is configured to resolve the at least one gap. ### Claim 11 (depends on 9) The multiple input multiple output millimeter wave imaging array according to claim 9, wherein the controller is configured to resolve the at least one gap by averaging between nearby incident angles. ### Claim 12 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein the controller is configured to create exact incident angles through interpolations between nearby incident angles. ### Claim 13 (depends on 1) The multiple input multiple output millimeter wave imaging array according to claim 1, wherein the controller is configured to average between nearby incident angles. ### Claim 14 A multiple input multiple output millimeter wave imaging method for incident angle dependent millimeter wave images with respect to a device, the multiple input multiple output millimeter wave imaging method comprising the steps of: providing a redundant array of transmit and receive millimeter wave antennas, and implementing a selection scheme, wherein the selection scheme selects respective transmit and receive millimeter wave antenna pairs for creating a corresponding millimeter wave image, and wherein the method further comprises the step of forming an array creating a distortion and/or alias minimized image with the aid of a collection of the respective transmit and receive millimeter wave antenna pairs. ### Claim 15 (depends on 14) The multiple input multiple output millimeter wave imaging method according to claim 14, wherein the selection scheme is based on the desired incident angle which will be used to create the corresponding image. ### Claim 16 (depends on 14) The multiple input multiple output millimeter wave imaging method according to claim 14, wherein the method further comprises the step of disposing the transmit and receive millimeter wave antennas such that the transmit and receive millimeter wave antennas are approximately at the incident angle from one another from a respective specular point. ### Claim 17 (depends on 14) The multiple input multiple output millimeter wave imaging method according to claim 14, wherein the method further comprises the step of reconstructing the corresponding image based on a sampled array. ### Claim 18 A multiple input multiple output millimeter wave imaging array for incident angle dependent millimeter wave images with respect to a device, the multiple input multiple output millimeter wave imaging array comprising: a redundant array of transmit and receive millimeter wave antennas, and a controller, wherein the controller is configured to implement a selection scheme, wherein the selection scheme selects respective transmit and receive millimeter wave antenna pairs for creating a corresponding millimeter wave image, and wherein the controller is configured to create exact incident angles through interpolations between nearby incident angles.