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Published byAliya Harcrow Modified over 4 years ago

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Microwave Office Basic Using Steps Speaker:

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Design Example Spec. 0.1dB ripple fractional bandwidth ¼ lambda coupled line BPF S11 should smaller than -15dB in the passband FBW=30%

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1.Open New Schematic

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Enter Schematic s name

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2.Choose Unit

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Units Press if MKS unit is needed

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3.Choose elements Press Elem bottom first

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4.Add substrate (Microstrip here ) 1.click substrate 2.Choose MSUB 3.Double click to change the value

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Here Al2O3 substrate is used Dielectric constant=9.8 Substrate Thickness=15mil

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5.Choose coupled line 1.Coupled lines 2.Drag MCLIN

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Hand calculation data for coupled lines Total four ¼ lambda resonators are used here First resonator: line width 8.3125mil,gap 2.4061mil,length 486.6 mil Second resonator: line width 8.9375mil,gap 2.625mil,length 485.3 mil Third resonator: line width 8.9375mil,gap 2.625mil,length 485.3 mil Fourth resonator: line width 8.3125mil,gap 2.4061mil,length 486.6 mil

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6.Connect the coupling lines

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7.Add ports Click here

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8.Set project frequencies

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Set project frequencies cont d Remember to click Apply

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9. See the response

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See the response cont d Enter graph name

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Add measurement

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Add measurement cont d Choose measurement type Choose the circuit use dB scale

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Result

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10. Fine tune the ckt parameters Click here and choose the ckt parameters to tune

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Start to tune 1.click tune 2.drag the value to change

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Fine tune result

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11. Optimize

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Optimize (2) 1.choose one measurement to meet the goal 2.Goal type 3.frequency to satisfy goal

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Optimize (3) Variables to opt

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optimize (4)

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optimize (5)

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optimize(6)

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12. TXL

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TXL cont d

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