# US 2020/0403318 A1 · Antenna structure and intelligent household appliance 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 2020/0403318 A1 - Document ID: US20200403318A1 - Status: Published application - Kind: A1 - Application number: 16/445,346 - Filed: 2019-06-19 - Published: 2020-12-24 - Earliest claimed: 2019-06-19 - Assignees: Ambit Microsystems (Shanghai) Ltd. - Applicants: Ambit Microsystems (Shanghai) Ltd. - Inventors: YEN-YU LIU - Web page: https://patentgrep.com/patent/US20200403318A1 ## CPC - H01Q 9/0421: {with a shorting wall or a shorting pin at one end of the element (H01Q9/0414 takes precedence)} - H01Q 9/065: {Microstrip dipole antennas (patch antenna H01Q9/0407)} - H01Q 1/007: {specially adapted for indoor communication} - H01Q 1/2208: {associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems (methods or arrangements for sensing record carriers, e.g. for reading patterns G06K7/00; record carrier for use with machines and with at least a part designed to carry digital markings G06K19/00)} - H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)} - H01Q 13/106: {Microstrip slot antennas (patch antenna elements H01Q9/0407)} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract An antenna structure capable of operating in several modes includes first and second metal patches and a substrate (which can be an air-filled void) positioned between them. The second patch is substantially an isosceles trapezoidal patch. The second patch includes a first bottom edge, a second bottom edge parallel to and spaced from the first bottom edge, a first side edge, a second side edge, a first shorting wall, and a second short circuit patch. The first side edge and the second side edge are connected to the first bottom edge and the second bottom edge. The first shorting wall and the second shorting wall are formed between the first patch and the second patch. The second patch further defines a V-shaped slot. ## Claims ### Claim at position 1 1: An antenna structure comprising: a first patch; a second patch, wherein the second patch is substantially an isosceles trapezoidal patch, the second patch comprises: a first bottom edge; a second bottom edge parallel to and space apart from the first bottom edge; a first side edge; a second side edge, each of the first side edge and the second side edge being connected to each of the first bottom edge and the second bottom edge; a first shorting wall; and a second shorting wall, the first shorting wall and the second shorting wall formed between the first patch and the second patch, wherein the second patch further defines a V-shaped slot, the V-shaped slot comprises a first section parallel to and spaced apart from the first side edge, and a second section parallel to and spaced apart from the second side edge, the first section and the second section are symmetrically positioned relative to a central line of the second patch; and a substrate positioned between the first patch and the second patch. ### Claim at position 2 (depends on 1) 2: The antenna structure of claim 1, wherein the first patch is grounded. ### Claim at position 3 (depends on 1) 3: The antenna structure of claim 1, further comprising a connecting device, wherein the connecting device comprises a first connecting end and a second connecting end, the first connecting end is grounded, the second connecting end is connected to the second patch. ### Claim at position 4 (depends on 3) 4: The antenna structure of claim 3, wherein the first connecting end passes through the first patch and the substrate and is electrically connected to the second patch. ### Claim at position 5 (depends on 3) 5: The antenna structure of claim 3, wherein the second connecting end is connected to the center line of the second patch. ### Claim at position 6 (depends on 1) 6: The antenna structure of claim 1, wherein the second patch is formed by placing the second shorting wall into an equilateral triangle metal patch. ### Claim at position 7 (depends on 6) 7: The antenna structure of claim 6, wherein the second connecting end is connected to a center of the equilateral triangle. ### Claim at position 8 (depends on 1) 8: The antenna structure of claim 1, wherein a length of each of the first section and the second section is approximately 36 mm. ### Claim at position 9 (depends on 1) 9: The antenna structure of claim 1, wherein the antenna structure excites a first resonant mode and a second resonant mode, the first resonant mode has a conical radiation pattern similar to that of a dipole antenna, and the second resonant mode has a broadside radiation pattern. ### Claim at position 10 (depends on 9) 10: The antenna structure of claim 9, wherein a width of the second shorting wall is adjustable, wherein as the width of the second shorting wall is increased, the antenna structure excites a third resonant mode, a resonant frequency of the third resonant mode approximately equals to a resonant frequency of the first resonant mode. ### Claim at position 11 11: A intelligent household appliance comprising: an antenna structure comprising: a first patch; a second patch, wherein the second patch is substantially an isosceles trapezoidal patch, the second patch comprises: a first bottom edge; a second bottom edge parallel to and space apart from the first bottom edge; a first side edge; a second side edge, each of the first side edge and the second side edge being connected to each of the first bottom edge and the second bottom edge; a first shorting wall; and a second shorting wall, the first shorting wall and the second shorting wall formed between the first patch and the second patch, wherein the second patch further defines a V-shaped slot, the V-shaped slot comprises a first section parallel to and spaced apart from the first side edge, and a second section parallel to and spaced apart from the second side edge, the first section and the second section are symmetrically positioned relative to a central line of the second patch; and a substrate positioned between the first patch and the second patch. ### Claim at position 12 (depends on 11) 12: The intelligent household appliance of claim 11, wherein the first patch is grounded. ### Claim at position 13 (depends on 11) 13: The intelligent household appliance of claim 11, wherein the antenna structure comprises a connecting device, the connecting device comprises a first connecting end and a second connecting end, the first connecting end is grounded, the second connecting end is connected to the second patch. ### Claim at position 14 (depends on 13) 14: The intelligent household appliance of claim 13, wherein the first connecting end passes through the first patch and the substrate and is electrically connected to the second patch. ### Claim at position 15 (depends on 13) 15: The intelligent household appliance of claim 13, wherein the second connecting end is connected to the center line of the second patch. ### Claim at position 16 (depends on 11) 16: The intelligent household appliance of claim 11, wherein the second patch is formed by placing the second shorting wall into an equilateral triangle metal patch. ### Claim at position 17 (depends on 16) 17: The intelligent household appliance of claim 16, wherein the second connecting end is connected to a center of the equilateral triangle. ### Claim at position 18 (depends on 11) 18: The intelligent household appliance of claim 11, wherein a length of each of the first section and the second section is approximately 36 mm. ### Claim at position 19 (depends on 11) 19: The intelligent household appliance of claim 11, wherein the antenna structure excites a first resonant mode and a second resonant mode, the first resonant mode has a conical radiation pattern similar to that of a dipole antenna, and the second resonant mode has a broadside radiation pattern. ### Claim at position 20 (depends on 19) 20: The intelligent household appliance of claim 19, wherein a width of the second shorting wall is adjustable, wherein as the width of the second shorting wall is increased, the antenna structure excites a third resonant mode, a resonant frequency of the third resonant mode approximately equals to a resonant frequency of the first resonant mode.