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193 条记录 (耗时 0.02 秒)

    HIGH FREQUENCY SIGNAL GENERATION APPARATUS
    38.
    发明申请
    HIGH FREQUENCY SIGNAL GENERATION APPARATUS 审中-公开

    公开(公告)号：US20170257062A1

    公开(公告)日：2017-09-07

    申请号：US15506749

    申请日：2014-12-31

    申请人： KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

    发明人： Jae Sung RIEH ,  Jong Won YUN

    IPC分类号： H03B5/12

    CPC分类号： H03B5/1212 ,  H01P5/12 ,  H03B5/1218 ,  H03B5/1231 ,  H03B2200/0076 ,  H03B2200/0084 ,  H03D2200/0003 ,  H03D2200/0005

    摘要： The apparatus comprises a first coupler configured to receive two output signals, having 180° phase difference, outputted from a first differential generator as two input signals, and output a first voltage signal generated by adding the two input signals and a second voltage signal corresponding to subtraction of the two input signals, a second coupler configured to receive two output signals, having 180° phase difference, outputted from a second differential generator as two input signals, and output a third voltage signal generated by adding the two input signals and a fourth voltage signal corresponding to subtraction of the two input signals, a coupling network connected to the first differential generator and the second differential generator and a third coupler configured to output a signal generated by adding the voltage signal outputted from the first coupler and corresponding voltage signal outputted from the second coupler.

    VARIABLE FREQUENCY OSCILLATOR HAVING WIDE TUNING RANGE AND LOW PHASE NOISE
    39.
    发明申请
    VARIABLE FREQUENCY OSCILLATOR HAVING WIDE TUNING RANGE AND LOW PHASE NOISE 审中-公开

    公开(公告)号：US20170201213A1

    公开(公告)日：2017-07-13

    申请号：US15399059

    申请日：2017-01-05

    申请人： SDRF EURL

    发明人： BIAGIO BISANTI ,  ERIC DUVIVIER ,  LORENZO CARPINETO ,  STEFANO CIPRIANI ,  FRANCESCO COPPOLA ,  GIANNI PUCCIO ,  RÉMI ARTINIAN ,  FRANCOIS MAROT ,  VANESSA BEDERO ,  LYSIANE KOECHLIN

    IPC分类号： H03B5/04 ,  H03B5/12

    CPC分类号： H03B5/04 ,  H03B5/1218 ,  H03B5/1231 ,  H03B5/124 ,  H03B5/1243 ,  H03B2200/0006 ,  H03B2200/0008 ,  H03B2200/004 ,  H03B2201/0208 ,  H03L7/099

    摘要： A variable frequency oscillator comprising a first transistor (10) and a second transistor (20); wherein the first transistor (10) has a first terminal—collector—which is connected to a reference voltage, and a second terminal—emitter—which is connected to a first terminal of a first current source (13), which second terminal is connected to ground, and a third terminal—base—connected to a first terminal of a first inductor (14) and to a top terminal of a first capacitor (11), wherein the first capacitor (11) has a bottom terminal which is connected to the second terminal—emitter—of the first transistor (10) but also to a top terminal of a second capacitor (12) having a bottom terminal being connected to ground; wherein the second transistor (20) has a first terminal—collector—which is connected to a reference voltage, and a second terminal—emitter—which is connected to a first terminal of a second current source (23), which second terminal is connected to ground, and a third terminal—base—connected to a first terminal of a second inductor (14) and to a top terminal of a third capacitor (21), wherein the third capacitor (21) has a bottom terminal which is connected to the second terminal—emitter—of the second transistor (20) and also to a top terminal of a fourth capacitor (22) having a bottom terminal connected to ground; wherein the first and second inductors (14, 24) have a second terminal which are connected via a circuit (100) achieving variable capacitance, so as to form a circuit connecting in series all passive components composing the LC tank, so as to achieve a variable capacitance which can be used for performing a tuning of the oscillator, and wherein the second capacitor (12) and the fourth capacitor (22) are both connected to the physical ground thereby avoiding a 2nd harmonic common mode oscillation that might dominate over the differential fundamental one and might destroy the first and the second transistors (10, 20).