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公开(公告)号：US20200169345A1
公开(公告)日：2020-05-28
申请号：US16608181
申请日：2017-05-12
发明人： Stefan ANDERSSON
IPC分类号： H04J3/06
摘要： A method for assisting in synchronization of slave clocks in a communication network comprises receiving, in a node of the communication network, a message comprising a value of a synchronization accuracy (σrec) of a first upstream node in the communication network. A value of an accuracy (σlink) of a link latency unbalance between forward and reverse signalling in a link on which the node received the message is obtained. A value of a total synchronization accuracy (σtot) of the node comprises at least the accuracy (σlink) of the link latency unbalance of the link on which the node received the message is calculated. A node for assisting in synchronization of slave clocks in a communication network is also presented.
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公开(公告)号：US20240313396A1
公开(公告)日：2024-09-19
申请号：US18264118
申请日：2021-02-04
CPC分类号： H01Q3/24 , H01Q21/061 , H04B7/0691 , H04B7/0874
摘要： Mechanisms for operating an antenna array. The antenna array includes antenna elements and having a reconfigurable antenna array geometry. A method includes applying, as part of operating the antenna array for performing wireless communication, at least two antenna array geometries at the antenna array. The at least two antenna array geometries are alternatingly applied when the antenna array is operated. Each of the at least two antenna array geometries has a respective radiation pattern having a main lobe and a set of side lobes. The main lobes of all the radiation patterns have same pointing direction. Pointing directions of the side lobes differ between the radiation patterns of the at least two antenna array geometries.
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公开(公告)号：US20230344462A1
公开(公告)日：2023-10-26
申请号：US18245964
申请日：2020-09-30
发明人： Imad ud Din , Christian ELGAARD , Stefan ANDERSSON
IPC分类号： H04B1/44
CPC分类号： H04B1/44
摘要： A transceiver switch circuitry having an antenna port, a receiver port, a first transmitter port and a second transmitter port. The transceiver switch circuitry is configured to be operable in a reception mode to allow reception signals at the antenna port to be forwarded to the receiver port, and in a transmission mode to allow transmission signals, having a center frequency with a wavelength λ, at the first transmitter port and the second transmitter port to be forwarded to the antenna port for transmission. The transceiver switch circuitry has a receive arrangement including a first λ/4 impedance transformer and a first switch circuitry configured to ground the first λ/4 impedance transformer at the receiver port in the transmission mode; and a transmit arrangement having a second λ/4 impedance transformer and a second switch circuitry configured to ground a second side of the second λ/4 impedance transformer in the reception mode.
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公开(公告)号：US20230353187A1
公开(公告)日：2023-11-02
申请号：US18245985
申请日：2020-09-30
发明人： Imad ud Din , Christian ELGAARD , Stefan ANDERSSON
CPC分类号： H04B1/44 , H04B1/0053 , H04B1/54
摘要： Transceiver switch circuitry having an antenna port, a receiver port and two transmitter ports. The transceiver switch circuitry is configured to be operable in a reception mode to allow reception signals at the antenna port to be forwarded to the receiver port, and in a transmission mode to allow transmission signals, having a center frequency with a wavelength λ, at the first transmitter port and the second transmitter port to be forwarded to the antenna port for transmission. The transceiver switch circuitry includes a receive arrangement comprising having a receiver λ/4 impedance transformer and a receiver switch circuitry configured to ground the first λ/4 impedance transformer at the receiver port in the transmission mode; and a transmit arrangement comprising having three transmitter impedance transformers and a first and second transmitter switch circuitry configured to virtually ground a second side of the first λ/4 impedance transformer in the reception mode.
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公开(公告)号：US20230179237A1
公开(公告)日：2023-06-08
申请号：US17919526
申请日：2020-04-17
IPC分类号： H04B1/04
CPC分类号： H04B1/0458 , H04B2001/0408
摘要： The present invention relates inter alia to a transmitter arrangement (1), in particular for radio communication, comprising at least two antenna elements (31, 32), spaced apart by a defined distance and a differential output amplifier (20) with a first output (21) coupled to a first (31) of the at least two antenna elements (31, 32) and with a second inverted output (22) coupled to a second (32) of the at least two antenna elements (31, 32). A first transmission line element (50) is arranged between at least one of the first and second outputs (21, 22) and the respective one of the at least two antenna elements (31, 32) and is configured such that signals applied to respective input taps (310, 320) of the at least two antenna elements (31, 32) are substantially in-phase with each other.
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公开(公告)号：US20230179150A1
公开(公告)日：2023-06-08
申请号：US17923989
申请日：2020-05-14
CPC分类号： H03F1/0288 , H03F1/0227 , H03F3/245 , H04B1/0483 , H03F2200/102 , H04B2001/0408
摘要： 17 ABSTRACT A transmitter and Doherty power amplifier configured for envelope-controlled biasing of an auxiliary transmitter of the Doherty power amplifier are disclosed. According to one aspect, a transmitter having a main amplifier in a main signal path and an auxiliary amplifier in an auxiliary signal path is provided. The auxiliary amplifier is configured to be activated only when an envelope of an input signal of the transmitter exceeds a power threshold. The transmitter also includes at least one component in the auxiliary signal path configured to be deactivated when the auxiliary amplifier is deactivated, the at least one component including at least one of a pre-power amplifier, a mixer and a local oscillator buffer.
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公开(公告)号：US20230155299A1
公开(公告)日：2023-05-18
申请号：US17915824
申请日：2020-09-15
发明人： Fredrik TILLMAN , Stefan ANDERSSON
CPC分类号： H01Q21/08 , H04B1/525 , H01Q1/2283
摘要： A method and array of grouped antenna elements are provided. According to one aspect, a method includes arranging a row of transmit integrated circuits (IC), and a row of receive ICs on an IC chip, and arranging a plurality of IC chips on a panel so that a row of receive circuits on one IC chip is adjacent to a row of receive circuits on an adjacent IC chip.
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公开(公告)号：US20160164486A1
公开(公告)日：2016-06-09
申请号：US15044466
申请日：2016-02-16
发明人： Stefan ANDERSSON , Fenghao MU , Johan WERNEHAG
CPC分类号： H03H7/09 , H01F27/2804 , H01F27/29 , H01F27/42 , H01P1/212 , H03H7/0115 , H03H7/1758 , H03H7/1775 , H03H7/1791 , H03H7/38 , H03H7/42 , H03H7/425 , H03H7/427 , H03H2001/0078
摘要： A transformer filter arrangement including a transformer having a first winding and a second winding is provided. Both of the first and the second windings are located between an outer border and an inner border, which is inside the outer border. The transformer filter arrangement further includes at least one reactive sub circuit, each including at least one inductor. The first winding of the transformer is divided into a plurality of winding segments. At least a first one of the at least one reactive sub circuit being connected in series with the winding segments of the first winding between two such winding segments, and having at least one of the at least one inductor located inside said inner border.
摘要翻译： 提供了包括具有第一绕组和第二绕组的变压器的变压器滤波器装置。 第一和第二绕组都位于外边界和外边界之间的外边界和内边界之间。 变压器滤波器装置还包括至少一个无功辅助电路，每个电路包括至少一个电感器。 变压器的第一绕组被分成多个绕组段。 所述至少一个电抗子电路中的至少一个与所述第一绕组的绕组段串联连接在所述两个所述绕组段之间，并且所述至少一个电感器中的至少一个位于所述内部边界的内部。
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