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US 2006/0049892 A1Published application
Equivalent circuits and simulation method for an rf switch
AssigneeUnited Microelectronics Corp.
InventorsYue-Shiun Lee, Cheng-Hsiung Chen
Life of this patent
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Abstract
Equivalent circuits and a simulation method for simulating an RF switch are disclosed. The equivalent circuits are a first equivalent circuit and a second equivalent circuit, and are formed by resistors, capacitors, and inductors. The method includes using the first equivalent circuit to simulate the switch at a turned-off state and using the second equivalent circuit to simulate the switch at a turned-on state.
Claims9
An equivalent circuit for simulating a switch, the switch being used to control operations of outputting a radio signal, the equivalent circuit comprising:
- an input port for inputting the radio signal;
- an output port for outputting the radio signal;
- a first block connected to the input port, the first block having a first intrinsic inductor and a first intrinsic resistor connected to the first intrinsic inductor in series;
- a second block connected to the output port, the second block having a second intrinsic inductor and a second intrinsic resistor connected to the second intrinsic inductor in series;
- a third block connected to the first block and the second block, the third block having a gate capacitor, a gate inductor, and a gate resistor, the gate resistor being connected to the gate inductor in series and connected to the gate capacitor in parallel;
- a first gate-substrate capacitor connected to the first block and the third block;
- a second gate-substrate capacitor connected to the second block and the third block;
- and
- a fourth block connected to the first gate-substrate capacitor and the second gate-substrate capacitor in series, the fourth block having a substrate capacitor, a first substrate resistor, and two second substrate resistors, the substrate capacitor connected to the first substrate resistor in series and connected to the two second substrate resistors.
6 more elements
An equivalent circuit for simulating a switch, the switch being used to control operations of outputting a radio signal, the equivalent circuit comprising:
- an input port for inputting the radio signal;
- an output port for outputting the radio signal;
- a first block connected to the input port, the first block having a first intrinsic inductor and a first intrinsic resistor;
- a second block connected to the output port, the second block having a second intrinsic inductor and a second intrinsic resistor;
- a third block connected to the first block and the second block, the third block having a gate capacitor, a gate inductor, and a gate resistor;
- a first gate-substrate capacitor connected to the first block and the third block;
- a second gate-substrate capacitor connected to the second block and the third block;
- a fourth block connected to the first gate-substrate capacitor and the second gate-substrate capacitor in series, the fourth block having a substrate capacitor, a first substrate resistor, and two second substrate resistors;
- a first channel block connected to the first block, the third block, and the first gate-substrate capacitor, the first channel having a first channel inductor, a first channel capacitor, and a first channel resistor;
- a second channel block connected to the first channel block and having a second channel inductor, a second channel capacitor, and a second channel resistor;
- and
- a third channel block connected to the second channel block, the second block, the third block, and the second gate-substrate capacitor, the third channel having a third channel inductor, a third channel capacitor, and a third channel resistor;
- wherein the first channel block, the second channel block, and the third channel block are connected in series.
10 more elements
A method for simulating a switch used to control operations of outputting a radio signal, the method comprising:
- establishing a first equivalent circuit, the first equivalent circuit comprising:
- an input port for inputting the radio signal;
- an output port for outputting the radio signal;
- a first block connected to the input port, the first block having a first intrinsic inductor and a first intrinsic resistor;
- a second block connected to the output port, the second block having a second intrinsic inductor and a second intrinsic resistor;
- a third block connected to the first block and the second block, the third block having a gate capacitor, a gate inductor, and a gate resistor;
- a first gate-substrate capacitor connected to the first block and the third block;
- a second gate-substrate capacitor connected to the second block and the third block;
- and
- a fourth block connected to the first gate-substrate capacitor and the second gate-substrate capacitor in series, the fourth block having a substrate capacitor, a first substrate resistor, and two second substrate resistors;
- establishing a second equivalent circuit, the second equivalent circuit including the first equivalent circuit and comprising:
- a first channel block connected to the first block, the third block, and the first gate-substrate capacitor, the first channel having a first channel inductor, a first channel capacitor, and a first channel resistor;
- a second channel block connected to the first channel block and having a second channel inductor, a second channel capacitor, and a second channel resistor;
- and
- a third channel block connected to the second channel block, the second block, the third block, and the second gate-substrate capacitor, the second channel block being connected in series with the first channel block and the third channel block, the third channel having a third channel inductor, a third channel capacitor, and a third channel resistor;
- utilizing the first equivalent circuit to simulate the switch at a turned-off state;
- and
- utilizing the second equivalent circuit to simulate the switch at a turned-on state.
15 more elements
Dependencies are inferred from the claim text.