# US 12,015,190 B2 · Multiplexing structure for wireless antenna and touch pad of touch sensor, and wireless wearable device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,190 B2 - Document ID: US12015190B2 - Status: Granted - Kind: B2 - Application number: 17/361,364 - Filed: 2021-06-29 - Published: 2021-10-21 - Granted: 2024-06-18 - Earliest claimed: 2019-01-10 - Assignees: Tiinlab Corporation - Applicants: Tiinlab Corporation - Inventors: Kuan-Hong Hsieh; Jian Huang; Lingdong Xia - Web page: https://patentgrep.com/patent/US12015190B2 ## CPC - H01Q 1/22: by structural association with other equipment or articles - G06F 3/03547: {Touch pads, in which fingers can move on a surface} - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/044: by capacitive means - H01Q 1/528: {reducing the re-radiation of a support structure (in a parabolic reflector antenna H01Q19/023)} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract Disclosed are a multiplexing structure for a wireless antenna and a touch pad of a touch sensor, and a wireless wearable device. The multiplexing structure includes a radiating touch pad, a first conductor, a first circuit, a second circuit, and a frequency dividing circuit. The radiating touch pad is configured to receive and transmit an RF signal and receive a touch signal. The first conductor is electrically connected to the radiating touch pad. The first circuit is electrically connected to the radiating touch pad through the first conductor. The frequency dividing circuit is electrically connected to the second circuit and the first conductor, and is located between the second circuit and the first conductor. The multiplexing structure can separate the touch signal and the RF signal, and can solve the problem of mutual signal interference in the wireless wearable device caused by space limitation. ## Claims ### Claim 1 A multiplexing structure (100) comprising: a radiating touch pad (110) configured to receive and transmit an RF signal and receive a touch action and generate a touch signal in response to the touch action; a first conductor (120) electrically connected to the radiating touch pad (110); a first circuit (130) electrically connected to the radiating touch pad (110) through the first conductor (120) and configured to control the radiating touch pad (110) to receive and transmit the RF signal; a second circuit (140) configured to process the touch signal received by the radiating touch pad (110); and a frequency dividing circuit (150) configured to allow the touch signal to enter the second circuit (140) while preventing the RF signal from entering the second circuit (140); wherein the frequency dividing circuit (150) is electrically connected to the second circuit (140) and the first conductor (120) located between the second circuit (140) and the first conductor (120), and configured to isolate the signal. ### Claim 2 (depends on 1) The multiplexing structure (100) according to claim 1, further comprising: a second conductor (160) electrically connected to the radiating touch pad (110), an end of the second conductor (160) away from the radiating touch pad (110) being grounded. ### Claim 3 (depends on 2) The multiplexing structure (100) according to claim 2, further comprising a ground board (170), wherein the end of the second conductor (160) away from the radiating touch pad (110) is grounded through the ground board (170). ### Claim 4 (depends on 3) The multiplexing structure (100) according to claim 3, wherein the ground board (170) is a circuit board. ### Claim 5 (depends on 1) The multiplexing structure (100) according to claim 1, wherein the frequency dividing circuit (150) comprises an RF choke coil (151). ### Claim 6 A multiplexing structure (100) comprising: a radiating touch pad (110) configured to receive and transmit an RF signal and receive a touch action and generate a touch signal in response to the touch action; a first conductor (120) electrically connected to the radiating touch pad (110); a first circuit (130) electrically connected to the radiating touch Dad (110) through the first conductor (120) and configured to control the radiating touch pad (110) to receive and transmit the RF signal; a second circuit (140) configured to process the touch signal received by the radiating touch pad (110); a frequency dividing circuit (150) configured to allow the touch signal to enter the second circuit (140) while preventing the RF signal from entering the second circuit (140); and a second conductor (160) electrically connected to the radiating touch pad (110); wherein the second circuit (140) is electrically connected to the radiating touch pad (110) through the second conductor (160) and configured to process the touch signal received by the radiating touch pad (110); the frequency dividing circuit (150) is electrically connected to the radiating touch pad (110) through the second conductor (160), an end of the frequency dividing circuit (150) away from the second conductor (160) is grounded, and the frequency dividing circuit (150) is configured to filter out the RF signal. ### Claim 7 (depends on 6) The multiplexing structure (100) according to claim 6, further comprising: a ground board (170), wherein the end of the frequency dividing circuit (150) away, from the second conductor (160) is grounded through the ground board (170), the ground board (170) being a circuit board. ### Claim 8 (depends on 6) The multiplexing structure (100) according to claim 6, wherein frequency dividing circuit (150) includes a bypass capacitor (152).