# US 2019/0379130 A1 · Antenna device used to perform dynamic control for feeding points and radio frequency chain circuit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0379130 A1 - Document ID: US20190379130A1 - Status: Published application - Kind: A1 - Application number: 16/427,245 - Filed: 2019-05-30 - Published: 2019-12-12 - Earliest claimed: 2018-06-06 - Assignees: Mediatek Inc. - Applicants: Mediatek Inc. - Inventors: Ting-Wei Kang; Jenwei Ko; Yeh-Chun Kao; Chung-Hsin Chiang - Web page: https://patentgrep.com/patent/US20190379130A1 ## CPC - H01Q 3/24: varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching - H01Q 21/0006: {Particular feeding systems} - H01Q 9/045: {with particular feeding means (for circular polarisation H01Q9/0428)} - H01Q 9/065: {Microstrip dipole antennas (patch antenna H01Q9/0407)} - H01Q 21/29: Combinations of different interacting antenna units for giving a desired directional characteristic (H01Q25/00 takes precedence) - H03F 3/195: in integrated circuits - H03F 3/20: Power amplifiers, e.g. Class B amplifiers, Class C amplifiers (H03F3/26 - H03F3/30 take precedence) - H03F 3/245: {with semiconductor devices only} - H03F 3/68: Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics {(power amplifiers using a combination of several semiconductor amplifiers H03F3/211; combinations of amplifiers using coupling networks with distributed constants H03F3/602)} - H04B 1/40: Circuits - H04B 1/525: with means for reducing leakage of transmitter signal into the receiver - H01Q 1/241: {used in mobile communications, e.g. GSM (H01Q1/247, H01Q1/248 take precedence)} - H01Q 25/00: Antennas or antenna systems providing at least two radiating patterns (arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00) - H03F 2200/231: the input of an amplifier can be switched on or off by a switch to amplify or not an input signal - H03F 2200/294: the amplifier being a low noise amplifier [LNA] - H03F 2200/414: A switch being coupled in the output circuit of an amplifier to switch the output on/off - H03F 2200/451: the amplifier being a radio frequency amplifier - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H03F: AMPLIFIERS - H04B: TRANSMISSION ## Abstract An antenna device may include a first antenna, a second antenna, a switch unit and a radio frequency chain circuit. The first antenna may be used to wirelessly transceive a first signal, and include a first feeding point used to transceive the first signal through a conductive path. The second antenna may be used to wirelessly transceive a second signal, and include a second feeding point used to transceive the second signal through a conductive path. The switch unit may be coupled among the first feeding point, the second feeding point and the radio frequency chain circuit and be used to selectively transceive one of the first signal and the second signal. The radio frequency chain circuit may be used to transceive and process the signal transceived by the switch unit. A nearest gap between the first antenna and the second antenna may be less than 30 millimeters. ## Claims ### Claim 1 An antenna device comprising: a first antenna configured to wirelessly transceive a first signal, and comprising a first feeding point configured to transceive the first signal through a conductive path; a second antenna configured to wirelessly transceive a second signal, and comprising a second feeding point configured to transceive the second signal through a conductive path; a switch unit coupled among the first feeding point, the second feeding point and a radio frequency chain circuit and configured to selectively transceive one of the first signal and the second signal; and the radio frequency chain circuit configured to transceive and process the one of the first signal and the second signal transceived by the switch unit; wherein the radio frequency chain circuit comprises a power amplifier and a low noise amplifier, and a nearest gap between the first antenna and the second antenna is less than 30 millimeters (mm). ### Claim 2 (depends on 1) The antenna device of claim 1, wherein: the radio frequency chain unit comprises a transmission path unit configured to send a signal to at least one of the first antenna and the second antenna, and a reception path unit configured to receive another signal from at least one of the first antenna and the second antenna; the switch unit comprises: a first conductive path optionally coupled between the first feeding point and one of the transmission path unit and the reception path unit; and a second conductive path optionally coupled between the second feeding point and one of the transmission path unit and the reception path unit; wherein when the first conductive path is coupled between the first feeding point and one of the transmission path unit and the reception path unit, the second conductive path is not concurrently coupled between the second feeding point and one of the transmission path unit and the reception path unit. ### Claim 3 (depends on 1) The antenna device of claim 1, wherein: the switch unit comprises a first terminal selectively coupled to the first feeding point or the second feeding point for transceiving one of the first signal and the second signal, and a second terminal; and the radio frequency chain circuit comprises a first terminal coupled to the second terminal of the switch unit, and a second terminal. ### Claim 4 (depends on 1) The antenna device of claim 1, wherein the first antenna has a first radiation pattern, the second antenna has a second radiation pattern, and the first radiation pattern is different from the second radiation pattern. ### Claim 5 (depends on 1) The antenna device of claim 1, wherein the first antenna has a first peak gain direction, the second antenna has a second peak gain direction, and the first peak gain direction is different from the second peak gain direction. ### Claim 6 (depends on 1) The antenna device of claim 1, wherein the first antenna is a broadside antenna, and the second antenna is an end-fire antenna. ### Claim 7 (depends on 1) The antenna device of claim 1, wherein the first antenna is a front-side antenna, and the second antenna is a back-side antenna. ### Claim 8 (depends on 1) The antenna device of claim 1, wherein the first antenna is a first end-fire antenna with a first peak gain direction, the second antenna is a second end-fire antenna with a second peak gain direction, and the first peak gain direction is different from the second peak gain direction. ### Claim 9 (depends on 1) The antenna device of claim 1, wherein the first antenna further comprises another feeding point. ### Claim 10 (depends on 9) The antenna device of claim 9, wherein the first feeding point and the another feeding point of the first antenna are configured to excite the first antenna in a same polarization direction. ### Claim 11 (depends on 9) The antenna device of claim 9, wherein the first antenna is a differential antenna. ### Claim 12 (depends on 11) The antenna device of claim 11, wherein the first antenna is a differential broadside antenna. ### Claim 13 (depends on 12) The antenna device of claim 12, wherein the first antenna is a differential patch antenna. ### Claim 14 (depends on 11) The antenna device of claim 11, wherein the first antenna is a differential end-fire antenna. ### Claim 15 (depends on 14) The antenna device of claim 14, wherein the first antenna is a differential dipole antenna. ### Claim 16 (depends on 1) The antenna device of claim 1, wherein the first antenna further comprises n other feeding points wherein n is a positive integer and n>0. ### Claim 17 (depends on 16) The antenna device of claim 16, wherein the first feeding point and the n other feeding points of the first antenna are configured to excite the first antenna in a same polarization direction. ### Claim 18 (depends on 1) The antenna device of claim 1, wherein the first antenna and/or the second antenna is configured to operate at a frequency not lower than 7.125 Gigahertz (GHz). ### Claim 19 (depends on 1) The antenna device of claim 1, wherein the radio frequency chain circuit further comprises a phase shifter. ### Claim 20 An antenna device comprising: X antennas each configured to wirelessly transceive a signal and comprising at least a feeding point configured to optionally transceive the signal through a conductive path; Y switch units each coupled among a corresponding radio frequency chain circuit of W radio frequency chains and a corresponding set of K feeding points of the X antennas and configured to selectively transceive one of Z signals wherein the Z signals are transceived by the X antennas; and the W radio frequency chain circuits each coupled to a corresponding switch unit of the Y switch units and configured to transceive and process one corresponding signal transceived by the corresponding switch unit; wherein X, Y, Z, W and K are positive integers, 1