# US 9,437,646 B2 · Detecting device, detector, and imaging apparatus using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,437,646 B2 - Document ID: US9437646B2 - Status: Granted - Kind: B2 - Application number: 13/742,195 - Filed: 2013-01-15 - Published: 2013-07-25 - Granted: 2016-09-06 - Earliest claimed: 2012-01-19 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Ryota Sekiguchi; Masahiro Okuda - Web page: https://patentgrep.com/patent/US9437646B2 ## CPC - H10F 39/193: {Infrared image sensors} - G01N 21/3581: using far infrared light; using Terahertz radiation - G01S 7/032: {Constructional details for solid-state radar subsystems} - G01S 7/024: {using polarisation effects (in waveguides H01P1/165; for aerials H01Q, e.g. H01Q15/22, H01Q15/24, H01Q19/195)} - G01S 13/003: {Bistatic radar systems; Multistatic radar systems} - G01S 13/0209: {Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband} - H01Q 1/36: Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) - H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - 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 detecting device which detects electromagnetic waves includes an antennal configured to receive electromagnetic waves, and a plurality of semiconductor rectifying devices serially connected to the antenna, and connected in parallel to each other such that the polarity is aligned, so as to receive electromagnetic waves propagated from the antenna, wherein the plurality of semiconductor rectifying devices are each disposed at positions where the phase of electromagnetic waves propagated from the antenna is substantially the same phase. ## Claims ### Claim 1 A detecting device which detects electromagnetic waves, the detecting device comprising: an antenna configured to receive electromagnetic waves; and a plurality of semiconductor rectifying devices serially connected to the antenna, and connected in parallel to each other such that the polarity is aligned, wherein the plurality of semiconductor rectifying devices are in contact with the antenna or connected to the antenna via a transmission line to rectify electromagnetic waves received by the antenna and transmitted, directly or via the transmission line, to the plurality of semiconductor rectifying devices, and wherein the plurality of semiconductor rectifying devices are each disposed at positions where the phase of electromagnetic waves propagated from the antenna is substantially the same phase. ### Claim 2 (depends on 1) The detecting device according to claim 1, wherein the plurality of semiconductor rectifying devices are disposed in parallel to the same wave front of the electromagnetic waves propagated from the antenna. ### Claim 3 (depends on 1) The detecting device according to claim 1, wherein at least one conductor making up the antenna and the semiconductor rectifying devices are electrically serially connected via a semiconductor layer. ### Claim 4 (depends on 1) The detecting device according to claim 1, wherein the antenna is configured of a pair of conductors, with the plurality of semiconductor rectifying devices being juxtaposed in contact with one of the pair. ### Claim 5 (depends on 4) The detecting device according to claim 4, wherein the pair of antennas is made up of two conductors which are disposed on a substrate in a non-contacting state. ### Claim 6 (depends on 1) The detecting device according to claim 1, wherein the antenna has formed thereto a salient portion, with the salient portion being situated between the plurality of semiconductor rectifying devices. ### Claim 7 (depends on 1) The detecting device according to claim 1, wherein the transmission line is connected to the antenna and the plurality of semiconductor rectifying devices. ### Claim 8 (depends on 1) The detecting device according to claim 1, wherein the plurality of semiconductor rectifying devices are disposed at a position where the absolute value of phase difference of the electromagnetic waves propagated from the antenna is 0 or greater and π/16 or smaller. ### Claim 9 (depends on 8) The detecting device according to claim 8, wherein the plurality of semiconductor rectifying devices are disposed at a position where the absolute value of phase difference of the electromagnetic waves propagated from the antenna is 0 or greater and π/32 or smaller. ### Claim 10 (depends on 1) The detecting device according to claim 1, wherein, the plurality of semiconductor rectifying devices are equal in the area of a cross-section perpendicular to the direction in which current flows at a junction making up the semiconductor rectifying devices. ### Claim 11 (depends on 10) The detecting device according to claim 10, wherein the area of the junction is 10 μm2 or smaller. ### Claim 12 (depends on 10) The detecting device according to claim 10, wherein the junction of the each of the plurality of semiconductor rectifying devices is a cylindrical shape surrounded by a dielectric. ### Claim 13 (depends on 1) The detecting device according to claim 1, wherein the plurality of semiconductor rectifying devices are formed using silicon. ### Claim 14 (depends on 13) The detecting device according to claim 13, wherein the plurality of semiconductor rectifying devices are Schottky barrier diodes or planar doped barrier diodes. ### Claim 15 (depends on 1) The detecting device according to claim 1, wherein the plurality of semiconductor rectifying devices are formed using a compound semiconductor material. ### Claim 16 (depends on 15) The detecting device according to claim 15, wherein the plurality of semiconductor rectifying devices are formed using a Group III-V semiconductor material. ### Claim 17 (depends on 1) The detecting device according to claim 1, the detecting device detecting electromagnetic waves of a frequency band including a part of 30 GHz to 30 THz. ### Claim 18 (depends on 1) The detecting device according to claim 1, wherein at least two of the plurality of semiconductor rectifying devices are each disposed at positions where the phase of electromagnetic waves propagated from the antenna is substantially the same phase. ### Claim 19 A detector to detect electromagnetic waves, the detector comprising: a detecting device which detects electromagnetic waves, the detecting device comprising: an antenna configured to receive electromagnetic waves; and a plurality of semiconductor rectifying devices serially connected to the antenna, and connected in parallel to each other such that the polarity is aligned, wherein the plurality of semiconductor rectifying devices are in contact with the antenna or connected to the antenna via a transmission line to rectify electromagnetic waves received by the antenna and transmitted, directly or via the transmission line, to the plurality of semiconductor rectifying devices, and wherein the plurality of semiconductor rectifying devices are each disposed at positions where the phase of electromagnetic waves propagated from the antenna is substantially the same phase; and a measuring unit configured to measure an electric field at the antenna. ### Claim 20 An imaging apparatus to perform image pickup of an object of measurement using electromagnetic waves, the imaging apparatus comprising: an oscillator configured to oscillate electromagnetic waves of a frequency band including a part of 30 GHz to 30 THz; a detector to detect electromagnetic waves, the detector comprising: a detecting device which detects electromagnetic waves, the detecting device comprising: an antenna configured to receive electromagnetic waves; and a plurality of semiconductor rectifying devices serially connected to the antenna, and connected in parallel to each other such that the polarity is aligned, wherein the plurality of semiconductor rectifying devices are in contact with the antenna or connected to the antenna via a transmission line to rectify electromagnetic waves received by the antenna and transmitted, directly or via the transmission line, to the plurality of semiconductor rectifying devices, and wherein the plurality of semiconductor rectifying devices are each disposed at positions where the phase of electromagnetic waves propagated from the antenna is substantially the same phase; and a measuring unit configured to measure an electric field at the antenna; and an image constructing unit configured to construct an image relating to the object of measurement, based on electromagnetic waves detected by the detector.