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    LOW POWER ACTIVE PHASE SHIFTER FOR PHASE-ARRAY SYSTEMS
    1.
    发明申请
    LOW POWER ACTIVE PHASE SHIFTER FOR PHASE-ARRAY SYSTEMS 有权

    公开(公告)号：US20220399864A1

    公开(公告)日：2022-12-15

    申请号：US17746856

    申请日：2022-05-17

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Omar Abdulmonem Mohamed Elsayed ,  Venumadhav Bhagavatula ,  Tienyu Chang ,  Siu-Chuang Ivan Lu ,  Sangwon Son

    IPC: H03G3/30 ,  H03F3/45 ,  H03K5/01

    Abstract: A variable gain amplifier includes a first transconductor circuit coupled to a first input terminal, a first output terminal, and a second output terminal of the variable gain amplifier, the first transconductor circuit including: a plurality of positive coefficient transistors coupled to the first output terminal and configured to selectively conduct current in response to a first binary code, a plurality of negative coefficient transistors coupled to the second output terminal and configured to selectively conduct current in response to a second binary code, and a plurality of amplifying transistors, each having a gate electrode coupled to the first input terminal, a first electrode coupled to a ground reference, and a second electrode coupled to a pair of coefficient transistors including one of the plurality of positive coefficient transistors and one of the plurality of negative coefficient transistors.

    SYSTEMS AND METHODS FOR DETECTING LOCAL OSCILLATOR LEAKAGE AND IMAGE TONE IN I/Q MIXER BASED TRANSCEIVERS
    2.
    发明申请
    SYSTEMS AND METHODS FOR DETECTING LOCAL OSCILLATOR LEAKAGE AND IMAGE TONE IN I/Q MIXER BASED TRANSCEIVERS 有权

    公开(公告)号：US20210175851A1

    公开(公告)日：2021-06-10

    申请号：US17142058

    申请日：2021-01-05

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hariharan Nagarajan ,  Ashutosh Verma ,  Chung Lau ,  Tienyu Chang

    IPC: H03D7/14 ,  H04B1/403 ,  H04B17/10

    Abstract: A detector circuit includes: a squaring circuit configured to receive an output of a power amplifier of a radio transmitter and to produce an output current, the output of the power amplifier including: a desired tone; a local oscillator leakage tone; and an image tone, and the output current of the squaring circuit including: a direct current (DC) component including a function of the desired tone and an alternating current (AC) component; and a DC current absorber electrically connected to an output terminal of the squaring circuit, the DC current absorber being configured to filter out the DC component of the output current of the squaring circuit to produce a filtered output of the squaring circuit, the filtered output including the AC component including functions of the local oscillator leakage tone and the image tone.

    Band switching balun
    3.
    发明授权
    Band switching balun 有权

    公开(公告)号：US11799504B2

    公开(公告)日：2023-10-24

    申请号：US17585480

    申请日：2022-01-26

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Amitoj Singh ,  Ajaypat Jain ,  Xiaohua Yu ,  Tienyu Chang ,  Siu-Chuang Ivan Lu ,  Sang Won Son

    IPC: H04L23/02 ,  H04B1/00 ,  H03D7/14 ,  H04B1/12 ,  H04B1/44

    CPC classification number: H04B1/006 ,  H03D7/1425 ,  H04B1/123 ,  H04B1/44

    Abstract: A band-switching network includes a dual-band balun and a switch network. The dual-band balun includes a first output and a second output. The switch network includes a first switch and a second switch in which an input to the first switch is coupled to the first output and an input to the second switch is coupled to the second balanced output. The dual-band balun further includes a primary coil, a first secondary coil and a second secondary coil in which the first secondary coil is coupled to the first balanced output and the second secondary coil is coupled to the second balanced output. In one embodiment, the primary coil and the first secondary coil are coupled by a first coupling factor k1, and the primary coil and the second secondary coil are coupled by a second coupling factor k2 that is different from the first coupling factor k1.

    Self-biasing shunt switch with bootstrapping
    4.
    发明授权
    Self-biasing shunt switch with bootstrapping 有权

    公开(公告)号：US11641202B2

    公开(公告)日：2023-05-02

    申请号：US16987335

    申请日：2020-08-06

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Amitoj Singh ,  Tienyu Chang ,  Siu-Chuang Ivan Lu

    IPC: H03K17/56 ,  H03F3/24 ,  H04B1/04

    Abstract: A shunt switch. In some embodiments, the shunt switch includes a transistor stack including a first transistor and a capacitor. The transistor stack may have a first end terminal and a second end terminal, the first transistor being connected to the first end terminal, the first end terminal being connected to a switching terminal of the shunt switch. The capacitor may have a first terminal connected to the second end terminal of the transistor stack, and a second terminal connected to a low-impedance node.

    COMPACT HIGH-DIRECTIVITY DIRECTIONAL COUPLER STRUCTURE USING INTERDIGITATED COUPLED LINES
    10.
    发明申请
    COMPACT HIGH-DIRECTIVITY DIRECTIONAL COUPLER STRUCTURE USING INTERDIGITATED COUPLED LINES 有权

    公开(公告)号：US20220247062A1

    公开(公告)日：2022-08-04

    申请号：US17462580

    申请日：2021-08-31

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Anirban Sarkar ,  Tienyu Chang ,  Siuchuang Ivan Lu ,  Sang Won Son

    IPC: H01P5/18 ,  H01Q23/00

    Abstract: Disclosed is a device including a first line, a second line including a first section disposed on a first side of the first line and a second section disposed on a second side of the first line, the second side being opposite to the first side and the second section being separate from the first section by a distance, and at least one bridge electrically connecting an end of the first section with an end of the second section and extending across the first line. The device may be a directional coupler that achieves significantly higher directivity than conventional directional coupler structures, and hence, improves power detection accuracy.

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