mixer design - Example Design a single-ended microwave...

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10 10 ON Zj =− 100 250 OFF = Design a single-ended microwave diode mixer at 10GHz. Given that the ON and OFF states impedances of a diode is and Example 11 10 10 R X j + 22 100 250 R X j + Solution 2 12 1 m XX RR R ⎡⎤ ⎛⎞ ⎢⎥ =+ ⎜⎟ ⎝⎠ ⎣⎦ Let the hyperbolic mean of the two impedances is mmm Z RX = + 2 10 250 10 100 1 90 10 100 m R −+ = ×+ = Ω The real part of hyperbolic mean is given by
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21 11 m XX R R R =+ 250 10 10 10 37 100 10 m X −+ = = Ω The imagery part of hyperbolic mean is given by 90 39 m Zj = 50 0.47 0.20 90 39 m yj j == + The normalized admittance is given by Therefore, Design a matching network to transform Z m to 50 Ω
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θ 1 θ 2 0.47 0.20 m yj = + 50 in Z = Ω A series and shunt stubs are required,
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mixer design - Example Design a single-ended microwave...

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