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    Affect performance of circuit design Coupled Microstrip on coplanar strip lines

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    Date
    2016-09
    Author
    Jetwara Tangjit
    Suphanan Phobtrakul
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    Abstract
    This research studies the effect on performances of power divider designed for a transmission line technology by using a coplanar microstrip. The proposed circuit design has good response with compact size. The presented technique can improve a directivity and an isolation of the transmission line by using a novel lange coupler with inductances in series at connected port. The proposed circuit can be applied for single-balanced diode mixer. The diode is used in order to decrease the frequency by connecting with a dual-compensation inductance and without compensation inductance. Considering at the center frequency of 70 MHz, the signal power is -30 dBm. At 2.38 GHz of the oscillator signal, the achieved signal power is 7 dBm. From the measured result, the dual-compensation inductance can increase the insolation of the RF mixer from 28 dB to 34 dB. It is obvious that the proposed circuit and technique are appropriated for the proposed application.
    URI
    http://repository.rmutr.ac.th/123456789/278
    http://localhost:8080/xmlui/handle/123456789/278
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