# US 12,224,496 B2 · Signal transmission apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,496 B2 - Document ID: US12224496B2 - Status: Granted - Kind: B2 - Application number: 17/998,495 - Filed: 2020-12-29 - Published: 2023-07-06 - Granted: 2025-02-11 - Earliest claimed: 2020-05-11 - Assignees: Shenzhen Tcl Digital Technology Ltd. - Applicants: Shenzhen Tcl Digital Technology Ltd. - Inventors: Liuzhong Yin; Zitong Wang; Bin Zhang - Web page: https://patentgrep.com/patent/US12224496B2 ## CPC - H01Q 21/28: Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} - H01Q 1/2291: {used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W)} - H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)} - H01Q 1/521: {reducing the coupling between adjacent antennas} - H01Q 5/371: Branching current paths - H01Q 5/378: Combination of fed elements with parasitic elements - H01Q 9/0421: {with a shorting wall or a shorting pin at one end of the element (H01Q9/0414 takes precedence)} - H01Q 9/045: {with particular feeding means (for circular polarisation H01Q9/0428)} - H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A signal transmission apparatus is provided in the present disclosure, including: a substrate, and a BLUETOOTH antenna and WI-FI antennas which are provided on a same side edge of the substrate. At least two branches of the WI-FI antennas are provided, and the BLUETOOTH antenna and the WI-FI antennas are provided at intervals. According to the present disclosure, the BLUETOOTH antenna and the WI-FI antennas are provided on the same side edge of the substrate, and the BLUETOOTH antenna and the WI-FI antennas are provided at intervals, so that all the antennas of the signal transmission apparatus are provided at an edge of a terminal board, thereby facilitating signal transmission and solving a problem in the prior art that the BLUETOOTH antenna and the WI-FI antennas are respectively provided on two side edges of the substrate, affecting data transmission. ## Claims ### Claim 1 A signal transmission apparatus, comprising: a substrate; and a wireless personal area network (WPAN) antenna and wireless local area network (WLAN) antennas which are provided on a same side edge of the substrate; at least two branches of the WLAN antennas are provided, and the WPAN antenna and the WLAN antennas are provided at intervals; wherein the WPAN antenna is a magnetic current source WPAN antenna, and the WLAN antennas are current source WLAN antennas; wherein the WLAN antennas are configured to two branches, which are a first WLAN antenna and a second WLAN antenna, and the WPAN antenna is arranged between the first WLAN antenna and the second WLAN antenna; wherein the substrate is provided with a circuit ground, a first WLAN antenna RF ground, and a second WLAN antenna RF ground, the WPAN antenna is a microstrip magnetic current source WPAN antenna formed as a radiation slit arranged on the circuit ground, the first WLAN antenna is arranged on the first WLAN antenna RF ground, and the second WLAN antenna is arranged on the second WLAN antenna RF ground. ### Claim 2 (depends on 1) The signal transmission apparatus as claimed in claim 1, wherein a first dividing slit is defined between the circuit ground and the first WLAN antenna RF ground, and a second dividing slit is defined between the circuit ground and the second WLAN antenna RF ground. ### Claim 3 (depends on 1) The signal transmission apparatus as claimed in claim 1, wherein, widths of the first dividing slit and the second dividing slit are greater than or equal to 0.1 mm. ### Claim 4 (depends on 3) The signal transmission apparatus as claimed in claim 3, wherein microstrip transmission lines are arranged in the substrate, a circuit module is arranged on the circuit ground, both the first WLAN antenna and the second WLAN antenna are connected to the circuit module through the microstrip transmission lines. ### Claim 5 (depends on 4) The signal transmission apparatus as claimed in claim 4, wherein a routing mode of the microstrip transmission line is vertical routing or parallel routing. ### Claim 6 (depends on 1) The signal transmission apparatus as claimed in claim 1, wherein the WLAN antenna is configured as a vertical polarization antenna. ### Claim 7 (depends on 1) The signal transmission apparatus as claimed in claim 1, wherein the substrate is an FR4 substrate. ### Claim 8 (depends on 1) The signal transmission apparatus as claimed in claim 1, wherein the substrate is a hollow cuboid, and the WPAN antenna and the WLAN antennas are arranged in the substrate and are close to a same long side edge. ### Claim 9 (depends on 3) The signal transmission apparatus as claimed in claim 3, wherein the widths of the first dividing slit and the second dividing slit are both configured to be 1 mm. ### Claim 10 (depends on 4) The signal transmission apparatus as claimed in claim 4, wherein the microstrip transmission line is a CPW transmission line. ### Claim 11 (depends on 2) The signal transmission apparatus as claimed in claim 2, wherein the first dividing slit and the second dividing slit are formed by etching slits. ### Claim 12 (depends on 1) The signal transmission apparatus as claimed in claim 1, wherein a length of the radiation slit is greater than half of a wavelength of a medium.