WO2007018037A1 - 高周波スイッチ回路 - Google Patents
高周波スイッチ回路 Download PDFInfo
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- WO2007018037A1 WO2007018037A1 PCT/JP2006/314799 JP2006314799W WO2007018037A1 WO 2007018037 A1 WO2007018037 A1 WO 2007018037A1 JP 2006314799 W JP2006314799 W JP 2006314799W WO 2007018037 A1 WO2007018037 A1 WO 2007018037A1
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- Prior art keywords
- switch circuit
- terminal
- frequency
- effect transistor
- field effect
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/693—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K2017/0806—Modifications for protecting switching circuit against overcurrent or overvoltage against excessive temperature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K2017/6875—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors using self-conductive, depletion FETs
Definitions
- the present invention relates to a high-frequency switch circuit configured to use a field effect transistor such as a high-electron mobility transistor in a switch circuit that switches connection paths of high-frequency signals.
- a wireless communication device that switches transmission and reception in a time-sharing manner, it is necessary to switch connection between an antenna and a transmission / reception circuit.
- a terminal using a plurality of frequency bands generally incorporates a plurality of transmission / reception circuits for each frequency band, so that switching of signal paths between the antenna and the transmission / reception circuits is required.
- wireless communication equipment that employs diversity reception or MIMO (Multi-Input Multi-Output) systems must switch the signal paths of multiple antennas and transmission / reception circuits.
- MIMO Multi-Input Multi-Output
- the high-frequency switch circuit using a high-electron-mobility transistor (HEMT) as a switch has excellent characteristics. Therefore, it is widely used.
- HEMT high-electron-mobility transistor
- this depletion type high electron mobility transistor (HEMT) is normally in the ON state where the drain and source are connected with low resistance when the gate potential is equal to the drain Z source potential, and the gate voltage is the drain Z source. It shows the characteristics of the delay type that is in the off state connected with high impedance when the threshold voltage is lower than the voltage (about IV).
- Patent Document 1 Japanese Patent Laid-Open No. 9-98078
- Patent Document 2 discloses a circuit that generates a control voltage by using a field effect transistor. Proposed.
- the power that can be cut off by the HEMT transistor is generally proportional to the square of the difference between the gate potential and the drain Z source potential. Therefore, if the control voltage decreases, these potential differences also decrease, and the high-speed switch circuit becomes The power that can be handled is also reduced.
- the high-frequency signal is rectified and added to the control signal, and the internal control is performed. A method to increase the signal has been proposed.
- FIG. 1 shows a high-frequency switch circuit described in Patent Document 1.
- reference numerals 6 and 7 are depletion type field effect transistors
- reference numerals 1 la and 1 lb are external control signal input terminals
- reference numerals 14 and 15 are high frequency signal input terminals 14 and output terminals 15, respectively.
- Reference numerals 21a and 21b are resistors
- reference numerals 24a24b and 24c are capacities (capacitors).
- the field effect transistor 7 to which a high frequency that varies the source-drain voltage of the field effect transistor 7 by about 0.2 V is input is turned on, and the high frequency switch circuit has sufficient isolation. As a result, there arises a problem that the power durability is reduced.
- the pinch-off voltage should be close to OV.
- the on-resistance of the field-effect transistor is increased, so that the high-frequency switch The insertion loss of the circuit increases.
- the high-frequency switch circuit proposed in Patent Document 1 there is a high possibility that a problem will occur when the output of the logic circuit whose voltage is lowered is used as it is for the control of the high-frequency switch circuit.
- Patent Document 4 in any of the proposed boost circuits (FIGS. 11, 12, 13, and 14 of Patent Document 4), the external control voltage is set to a low potential.
- the potential due to rectification is added.
- the output voltage becomes high and sufficient signal blocking ability cannot be obtained.
- An object of the present invention is to solve the above-described problem and easily form a high-frequency switch circuit capable of controlling a large power signal even with a low control voltage by an integrated circuit process for a field effect transistor. It is to propose a circuit that can be integrated.
- the high-frequency switch circuit of the present invention has the following configuration.
- a high-frequency switch circuit includes a switch circuit unit that switches between a connected state and a non-connected state of a high-frequency signal path, and an internal control for controlling the switch circuit unit based on an external control signal.
- a high-frequency switch circuit having a control voltage generation circuit section for generating a voltage, the control voltage generation circuit including a power take-in terminal of the control voltage generation circuit, a field effect transistor of a delay type, and an external control signal input terminal And the internal control voltage output terminal.
- the field effect transistor has a gate grounded, a source connected to the external control signal input terminal, a drain connected to the power capture terminal, and an internal control voltage output terminal. The element is connected to the electrical connection path between the drain of the field effect transistor and the power intake terminal.
- the gate of the preferred field effect transistor is grounded via a resistor, and the drain is connected to the power capture terminal via a first resistor.
- a high-frequency switch circuit includes a switch circuit unit that switches between a connected state and a disconnected state of a high-frequency signal path, and an internal control for controlling the switch circuit unit based on an external control signal.
- a high-frequency switch circuit having a control voltage generation circuit section for generating a voltage, the control voltage generation circuit including a power supply terminal of the control voltage generation circuit, a depletion type field effect transistor, a first resistor, The field effect transistor has an external control signal input terminal and an internal control voltage output terminal.
- the field effect transistor has a gate grounded, a source connected to the external signal input terminal, and a drain connected to one terminal of the first resistor.
- the other terminal of the first resistor is connected to the power supply terminal, and the internal control voltage output terminal It is connected to the electrical connection path between the drain of the transistor and one terminal of the first resistor.
- the gate of the field effect transistor is grounded via the second resistor.
- a plurality of high-frequency switch circuits according to the first and second inventions are used, and one end of a high-frequency signal path of each high-frequency switch circuit is connected to a common high-frequency port to provide a single-pole multi-throw high-frequency switch circuit You can also
- a high-frequency switch circuit includes a switch circuit unit that switches between a connected state and a non-connected state of a high-frequency signal path, and an internal control for controlling the switch circuit unit based on an external control signal.
- a high-frequency switch circuit having a control voltage generation circuit section for generating a voltage, the control voltage generation circuit section including a high-frequency circuit connection terminal, an external control signal input terminal, a depletion type field effect transistor,
- the field effect transistor includes a first resistor and a second resistor, an internal control voltage output terminal, a capacitor, and a diode.
- the field effect transistor has a gate connected to the ground, a source connected to the external control signal input terminal, and a drain connected to the node 1.
- the first resistor has one terminal connected to node 1 and the other terminal connected to node 2, and the second resistor is connected to the internal control voltage output terminal via One terminal is connected to the node 2 and the other terminal is connected to the external control signal input terminal, and the capacitance is connected to the high frequency signal path via the high frequency circuit connection terminal.
- the other terminal is connected to node 2, and the diode has a power sword connected to node 2 and an anode connected to the external control signal input terminal, and the internal control voltage output terminal is connected to the switch circuit section. It is connected.
- the gate of the field effect transistor is grounded via the third resistor.
- a high-frequency switch circuit includes a switch circuit unit that switches between a connected state and a non-connected state of a high-frequency signal path, and an internal control for controlling the switch circuit unit based on an external control signal.
- a high-frequency switch circuit having a control voltage generation circuit section for generating a voltage, the control voltage generation circuit section including a high-frequency circuit connection terminal, an external control signal input terminal, a depletion type field effect transistor, 1st resistor and internal control voltage output
- a field effect transistor having a gate grounded, a source connected to an external control signal input terminal, a drain connected to node 2, and a diode connected to a power sword. Is connected to node 2 and connected to anode force mode 1.
- the first resistor has one terminal connected to the electrical connection path between node 1 and the internal control voltage output terminal, and the other terminal
- the capacitor is connected to the external control signal input terminal, and the capacitor has one terminal connected to the high-frequency signal path via the high-frequency circuit connection terminal and the other terminal connected to the node 1, and the internal control voltage output terminal is connected to the switch. It is connected to the circuit section.
- the gate of the field effect transistor is grounded via the second resistor.
- a plurality of high-frequency switch circuits according to the third and fourth inventions are used, one end of the high-frequency signal path of each high-frequency switch circuit is connected to the common high-frequency port, and a capacitor provided in the control voltage generation circuit One terminal can be connected to a common high-frequency port via a high-frequency circuit connection terminal to form a single-pole multi-throw high-frequency switch circuit.
- any active element used in the high-frequency switch circuit is a depletion type field effect transistor having a pinch-off voltage substantially equal to the field effect transistor.
- the first resistor provided in the high-frequency switch circuit of the present invention can be an active load, and the internal control voltage output terminal is connected to the switch circuit unit via a low-pass filter. You can also.
- a low-pass filter is composed of, for example, a resistor and a capacitor.
- any of the combined high-frequency switch circuits can function as a single "high-frequency switch circuit". It is not always necessary. It is also possible to use a single-pole multi-throw high-frequency switch circuit by using a plurality of control voltage generation circuits having the above-described configuration and connecting these control voltage generation circuits to a common high-frequency port.
- this circuit can be integrated by a depletion type pHEMT (Pseudom orphic High Electron-Mobility Transistor) semiconductor process that has already been put into practical use, it can be made an inexpensive circuit. .
- pHEMT Pulseudom orphic High Electron-Mobility Transistor
- the circuit can be formed without adding a new process during integration. Since it can be realized, it is inexpensive. Alternatively, by replacing the resistance in the control voltage generation circuit with an active load, the chip area for integration can be saved and the cost can be reduced.
- the internal control voltage output terminal is connected to the switch circuit unit via a low-pass filter that also has a resistance and a capacitive force, so that the instability due to the generation of harmonics or the return of the signal is reduced. Means for avoiding the problem can be easily realized without hindering the integration.
- Such a high-frequency switch circuit of the present invention can be used for a high-frequency wireless communication device that requires switching of a high-frequency signal path, such as a cellular phone or a wireless LAN terminal that supports transmission / reception time division or multiband. .
- FIG. 1 is a diagram for explaining a configuration example of a conventional high-frequency switch circuit.
- FIG. 2 is a circuit diagram of a high-frequency switch circuit according to the first embodiment of the present invention.
- FIG. 3 is a diagram for explaining the gate voltage dependence of the drain current of the field effect transistor used in the circuit shown in FIG.
- FIG. 4 is a circuit diagram of a high-frequency switch circuit according to a second embodiment of the present invention.
- FIG. 5 is a circuit diagram of a high-frequency switch circuit according to a third embodiment of the present invention.
- FIG. 6 is a circuit diagram of a high-frequency switch circuit according to a fourth embodiment of the present invention.
- FIG. 7 is a circuit diagram of a high-frequency switch circuit according to a fifth embodiment of the present invention.
- FIG. 8 is a circuit diagram of a high-frequency switch circuit according to a sixth embodiment of the present invention.
- FIG. 9 is a circuit diagram of a high-frequency switch circuit according to a seventh embodiment of the present invention.
- FIG. 10 is a circuit diagram of a high-frequency switch circuit according to an eighth embodiment of the present invention.
- FIG. 11 is a circuit diagram of a high-frequency switch circuit according to a ninth embodiment of the present invention.
- FIG. 12 is a circuit diagram of a high-frequency switch circuit according to a tenth embodiment of the present invention.
- FIG. 2 is a circuit diagram of the high frequency switch circuit according to the first embodiment of the present invention.
- reference numerals 114 and 115 are an input terminal 114 and an output terminal 115 for the high-frequency signal of the high-frequency switch circuit
- 101 and 102 are depletion type field effect transistors
- 121a to d are resistors.
- the high-frequency signal input terminal 114 and the output terminal 115 are provided via a switch circuit unit including a depletion-type field effect transistor 102 that switches between a connected state and a disconnected state of the high-frequency signal path.
- the resistor 121a used in the control voltage generation circuit 100 is a resistor formed of a tantalum nitride thin film.
- Reference numerals 124a and 124b are capacitors having sufficiently small impedance in the high frequency band to be used, and reference numeral 122 is a power source.
- the resistance values of the resistors 121a to 121d are 30 kQ, and the capacitance values of the capacitors 124a and 124b are 10pF.
- the operating voltage of the logic circuit that controls the high-frequency switch circuit is 1.6 V, the power source 122 is a lithium ion battery, and the voltage is 3 V.
- the part indicated by reference numeral 100 in the figure is a control voltage generation circuit (booster circuit) provided in the high-frequency switch circuit.
- the control voltage generation circuit 100 includes a depletion-type field effect transistor 101.
- the gate of the depletion type field effect transistor 101 is grounded and the source is externally controlled.
- the drain is electrically connected to the signal input terminal 111, and the internal control voltage output terminal 112 is electrically connected to the drain of the depletion-type field effect transistor 101 and the power capture terminal 113. Connected to the connection path.
- This control voltage generation circuit 100 is an internal control voltage that controls the switch circuit unit based on an external control signal from the external control signal input terminal 111.
- the gate of a depletion type field effect transistor 101 provided in the circuit is grounded, and the source of the field effect transistor 101 is connected to the electric field from an external control signal input terminal 111.
- a bias (Vb) greater than the absolute value of the pinch-off voltage of the effect transistor 101 is applied.
- the drain of the field effect transistor 101 is connected to the power capture terminal 113, and the power capture terminal 113 has a sufficiently large bias (Va) compared to the absolute value of the pinch-off voltage of the field effect transistor 101. Va> Vb) is applied to the drain.
- the frequency of the high-frequency signal is 2.5 GHz.
- Field effect transistors 101 and 102 are FETs fabricated on the same chip by a pseudomorphic high electron mobility transistor (pHEMT) process and have almost the same pinch-off voltage. .
- the field effect transistor 101 has a gate length of 100 m
- the field effect transistor 102 has a gate length of 1 mm
- the gate width of each field effect transistor is 1 m.
- FIG. 3 is a diagram showing the drain current of the field-effect transistor 101 when the gate voltage is changed under the condition that the drain-source voltage (Vds) is 3V.
- the operation of the high-frequency switch circuit will be described.
- a high voltage of 1.6 V in the logic circuit is applied to the external control signal input terminal 111. Since the gate of the field effect transistor 101 is grounded, the gate-source voltage is 1.6 V and the drain current is 0.1 A or less. Then, the current flowing through the resistor 121a is also 0 .: A or less, so the voltage drop is also 3mV (0.1 AX 30k ⁇ ) or less. As a result, the voltage of the internal control voltage output terminal 112 is 3V, which is almost equal to the power supply voltage. Become.
- the internal system In order to output a voltage substantially equal to the power supply voltage from the control voltage output terminal 112, it is understood that the operating voltage of the logic circuit only needs to be equal to or greater than the absolute value of the pinch-off voltage. In addition, the current consumption of the control voltage generation circuit 100 at this time is 0.:A or less as apparent from the above.
- the internal control voltage output terminal 112 of the control voltage generation circuit 100 is connected to the gate of the field effect transistor 102. For this reason, about 3 V is applied to the gate of the field effect transistor 102 under the above-described conditions where the voltage of the internal control voltage output terminal 112 is substantially equal to the power supply voltage.
- a resistor 121d is provided between the source and drain terminals of the field effect transistor 102 to equalize the potentials of both terminals. Since the resistor 121d has a resistance value of about 30 k ⁇ , a high frequency signal current does not flow between the source and drain terminals of the field effect transistor 102. Since the drain of the field effect transistor 102 is connected to the power supply 122 via the resistor 121b, the drain voltage and the source voltage of the field effect transistor 102 are both about 3V.
- the gate-source voltage of the field effect transistor 102 is OV, and the field effect transistor 102 is turned on.
- the high-frequency signal terminals 114 and 115 are connected, and the high-frequency switch circuit is in a state of passing a high-frequency signal (ON state).
- the logic circuit power low voltage OV is applied to the external control signal input terminal 111.
- the voltage between the gate and the source of the field effect transistor 101 becomes 0V, and a voltage of 3V is applied between the drain and the source, so that a drain current of 27 mA flows.
- the resistance value of the resistor 121a is 30 k ⁇
- the drain current of 27 mA is a current value more than 100 times the current flowing through the resistor 121a. Therefore, the field effect transistor 102 is approximately short-circuited. Can be considered. Therefore, the voltage of the internal control voltage output terminal 112 is approximately 0V.
- the gate potential of the field effect transistor 102 is 0V, so the gate-source voltage is 13V. Accordingly, the field effect transistor 102 is turned off, and the high frequency signal terminals 114 and 115 are cut off as a high frequency switch circuit to be turned off. In addition, the reverse voltage is sufficiently large compared to the pinch-off voltage (1.16 V) of the field effect transistor 102. Therefore, even if the source potential fluctuates due to the high-frequency signal, it is not easily turned on. A large power durability can be obtained.
- FIG. 4 is a circuit diagram of a high-frequency switch circuit according to a second embodiment of the present invention.
- the same elements as those shown in FIG. 2 are denoted by the same reference numerals.
- the gate of the field effect transistor 101 used in the control voltage generation circuit 100 is grounded via a resistor 121e.
- the field effect transistor 101 is protected to some extent against an input of an excessive voltage, so that an improvement in reliability as a high-frequency switch circuit is expected.
- the operation of the high frequency switch circuit of this embodiment will be described.
- a high voltage of 1.6 V is applied to the logic circuit at the external control signal input terminal 111. Since the reverse current of the Schottky connection of the field effect transistor 101 is 0.1 A or less at a gate-source voltage of 1.6 V, the voltage across the resistor 121e is 3 mV or less. Therefore, the gate of the field effect transistor 101 is substantially equal to the ground potential. From this, as in the control voltage generation circuit of Example 1, the internal control voltage output terminal 112 becomes 3V, the capacitor 124a is charged through the resistor 12 lb, and the source-drain voltage of the field effect transistor 102 is charged. Becomes 3V.
- the current flowing through the gate of the field effect transistor 102 can be ignored because the Schottky connection is in the opposite direction. Accordingly, the gate-source voltage of the field effect transistor 102 is ⁇ 3 V, and the high-frequency switch circuit is turned off.
- the logic circuit applies OV to the external control signal input terminal 111.
- the internal control voltage output terminal 112 outputs OV.
- the source-drain voltage of the field effect transistor 102 is OV, and the gate-source voltage of the field effect transistor 2 is OV. Therefore, the source and drain of the field effect transistor 102 are connected, and the high-frequency switch circuit is turned on.
- FIG. 5 is a circuit diagram of a high-frequency switch circuit according to a third embodiment of the present invention.
- a single pole double throw (SPDT) circuit was realized.
- the same elements as those shown in FIG. 2 are used with the same reference numerals, but this high frequency switch circuit generates two control voltages.
- the components of each control voltage generation circuit include subscripts a for each component, for example, external control signal input terminals 11 la and 1 1 lb. And b.
- the high-frequency switch circuit according to this embodiment includes two control voltage generation circuits 100a and 100b, and external control signal voltages having complementary logic circuit power are applied to the external control signal input terminals 111a and 111b, respectively. Is done.
- power take-in terminals 113a and 113b of these two control voltage generation circuits are both connected to a single power supply 122, and are provided in the respective control voltage generation circuits via resistors 121a and 121b.
- the field effect transistors 101a and 101b are electrically connected to the drain side terminals.
- the capacitor 124a With the output of 3V from the internal control voltage output terminal 112a, the capacitor 124a is charged by the forward current of the Schottky connection of the field effect transistor 102a, whereby the potential of the node nl becomes 3V. Similarly, the potential of the node n2 connected to the internal control voltage output terminal 112a is also + 3V. On the other hand, the potential of the node n3 becomes OV by the output of OV from the internal control voltage output terminal 112b. [0066] Accordingly, the gate-source voltages of the field effect transistor 102a, the field effect transistor 102b, the field effect transistor 103a, and the field effect transistor 103b are OV, ⁇ 3V, ⁇ 3V, and OV, respectively. The switch states are on (field effect transistor 102a), off (field effect transistor 102b), off (field effect transistor 103a), and on (field effect transistor 103b).
- the high frequency signal terminals 114 and 116 are connected at a high frequency, and the high frequency signal terminal 115 is insulated. Further, since the field effect transistor 103b is in an on state, the high frequency signal terminal 115 is grounded at a high frequency. Due to the grounding of the high-frequency signal terminal 115, leakage of the high-frequency signal current from the field effect transistor 102b in the off state is released to the ground, and a better insulating state can be maintained.
- the logic circuit applies the low voltage OV to the external control signal input terminal 11 la and 1.6 V to 111b, the high-frequency signal terminals 115 and 116 are now connected for the same reason as described above. On the other hand, the high frequency signal terminal 114 is insulated.
- FIG. 6 is a circuit diagram for explaining a fourth embodiment of the control voltage generating circuit provided in the high-frequency switch circuit of the present invention.
- the resistance used in the control voltage generation circuit is a force formed by a tantalum nitride thin film. Its minimum line width is 5 m, and the sheet resistance is 50 ⁇ . The mouth. Therefore, in order to obtain a resistor with a resistance value of 30 k ⁇ , a length of 3 mm is required.
- a depletion-type field effect transistor 104 having a gate (terminal) connected to a source (terminal) is used as an active load (active load).
- the resistor 121a shown in FIG. 2 is substituted.
- Other configurations are the same as those of the control voltage generation circuit 100 shown in FIG. Note that the gate width of the field effect transistor 104 used for the active load is 5 m.
- the gate width of the field effect transistor 101 is 100 m as in the first embodiment.
- the field effect transistor 101 When a high voltage of 1.6 V is applied to the external control signal input terminal 111, the field effect transistor 101 is in an off state and the field effect transistor 104 as an active load is in an on state.
- the voltage output terminal 112 outputs 3V of the same potential as the power supply 122. It is powered.
- the field effect transistor 101 and the field effect transistor 104 are both in the on state.
- the field effect transistor 104 as an active load has a small gate width (5 Therefore, the operation is performed in the saturation region, and the current flowing through the source terminal of the field effect transistor 104 is about 2 mA.
- the gate width of the field effect transistor 101 is wide (100 m), it operates in a non-saturated region, and a large drain current flows compared to the current flowing through the source terminal of the field effect transistor 104 described above.
- a voltage drop of 0.05 V occurs between the drain and source of the field effect transistor 101, and as a result, 0.05 V is output from the internal control voltage output terminal 112.
- FIG. 7 is a circuit diagram of a high-frequency switch circuit according to a fifth embodiment of the present invention.
- reference numeral 202 denotes a delay type field effect transistor that constitutes a switch circuit unit for switching between passing and blocking high-frequency signals between the high-frequency ports RF1 (input side) and RF2 (output side).
- the source terminal and drain terminal of the depletion-type field effect transistor 202 are connected to a high frequency signal path, and the source and drain are connected by a resistor 214 to keep the DC potential equal.
- the gate terminal of the field effect transistor 202 is grounded via a resistor 215.
- the field effect transistor 202 is a depletion type, when the potential of the gate terminal is higher than the threshold voltage between the source and drain terminals, the field effect transistor 202 is connected between the source and drain terminals. Is turned on, but when it is lower than the threshold voltage, it is turned off. In this embodiment, the threshold voltage of the field effect transistor 202 is ⁇ 1.IV.
- reference numeral 200 denotes a control voltage generation circuit
- L1 is an external control signal input terminal
- T2 is an internal control voltage output terminal
- T1 is a high frequency circuit connection terminal
- 221 is a capacitor
- 231 is a Schottky.
- the diodes 211 and 212 are resistors and both have a resistance value of 10 kQ.
- Reference numeral 201 denotes a depletion-type field effect transistor, which is an FET manufactured by the same process as the field-effect transistor 202 which is also a depletion type, and has a threshold voltage of -1. IV. Nl indicates the position of node 1 and n2 indicates the position of node 2.
- a depletion-type field effect transistor 201 provided in the control voltage suppression circuit 200 has a gate grounded, a source terminal connected to the external control signal input terminal L1, and a drain. The terminal is connected to node 1 (nl).
- One terminal of the first resistor 211 is connected to the node 1 (nl), and the other terminal is connected to the node 2 (n2).
- the internal control voltage output terminal T2 is connected to the node l (nl), and the capacitor 221 has one terminal connected to the high-frequency signal path via the high-frequency circuit connection terminal T1, and the other terminal Connected to node 2 (n2).
- the force sword of the diode 231 is connected to the node 2 (n2), and the anode is connected to the external control signal input terminal L1.
- One terminal of the second resistor 212 is connected to the node 2 (n2), and the other terminal is connected to the external control signal input terminal L1.
- the internal control voltage output terminal T2 of the control voltage generation circuit 200 is connected to the drain terminal of the dispersion type field effect transistor 202 constituting the switch circuit section via the resistor 216.
- the resistor 216 is a load provided to suppress the influence of the control voltage suppression circuit 200 on the high frequency signal, and has a resistance value sufficiently larger than the characteristic impedance of the high frequency signal path.
- the characteristic impedance of the high-frequency signal path is 50 ⁇ or 75 ⁇ , and therefore the resistance value of the resistor 216 is set to 10 k ⁇ in this embodiment.
- the internal control voltage output terminal T2 and the switch circuit unit are connected to the source terminal or the gate terminal in addition to connecting the resistor 216 to the drain terminal of the diffusion field effect transistor 202. May be.
- the switch circuit section is not limited to the configuration shown in FIG. 7 which is configured by the depression type field effect transistor 202.
- the capacitance of the capacitor 221 needs to be sufficiently small in order to suppress the influence of the control voltage suppression circuit 200 on the high-frequency signal to a negligible level. However, if the capacity is too small, rectification does not occur and sufficient voltage is not generated. Therefore, it is desirable that the capacitance of the capacitor 221 be larger than the capacitance value of the Schottky diode 231. In this embodiment, the capacitance of the capacitor 221 is set to 0. It is lpF.
- the potential of node 1 (nl) is 1.6 V, and this is output from the internal control voltage output terminal T2 to the drain terminal of the depletion-type field effect transistor 202 via the resistor 216. . Since the drain and source of the field effect transistor 202 are connected via the resistor 214, the potentials thereof are kept equal, so the source potential of the field effect transistor 202 is also 1.6V. Therefore, the potential difference between the gate and the source terminal of the field effect transistor 202 is ⁇ 1.6 V, and the field effect transistor 202 is turned off. As a result, the high frequency ports RF1 and RF2 are cut off.
- the depletion-type field effect transistor 201 is in an off state with a potential difference between the gate and source terminals of 1.6 V. Therefore, a potential higher than 1.6V is output from the internal control voltage output terminal T2 by rectification, and the potential difference between the gate and source terminals of the depletion-type field effect transistor 202 is also higher than the external control signal potential 1.6V. .
- the power that can be cut off by the HEMT transistor is proportional to the square of the difference between the gate potential and the drain Z source potential.
- a low voltage OV in the logic circuit is applied to the external control signal input terminal L1, and When the high-frequency signal input to the high-frequency port RF1 is low power, the voltage amplitude of the node 2 (n2) is sufficiently small because the high-frequency signal is low power, so the rectification action by the Schottky diode 231 does not occur. . As a result, the delay type field effect transistor 201 is turned on because the potential difference between the gate and the source terminals becomes OV.
- the potential of the node 1 (nl) becomes OV, and this potential is output from the internal control voltage output terminal T2 to the drain terminal of the depletion-type field effect transistor 202 via the resistor 216.
- the potential difference between the gate and source terminals of the effect transistor 202 is OV.
- the delay type field effect transistor 202 is turned on, and the high frequency ports RF1 and RF2 are connected in a high frequency manner.
- the depletion-type field effect transistor 201 is turned on when the potential difference between the gate and the source terminal is OV, so that the resistance between the source and the drain (on resistance) is sufficiently small. . Therefore, the potential of the node 1 (nl) is substantially equal to the potential 0 V of the external control signal terminal L1.
- This potential is output from the internal control voltage output terminal T2 to the drain terminal of the depletion-type field effect transistor 202 via the resistor 216. As a result, the gate of the depletion-type field effect transistor 202 is output. The potential difference between one source terminal is also OV. The field effect transistor 202 is turned on, and the high frequency ports RF1 and RF2 are connected in a high frequency manner.
- the high-frequency switch circuit of this embodiment operates as a high-frequency switch circuit that can control the interruption and passage of a high-power high-frequency signal even by a low-voltage external control signal.
- FIG. 8 is a circuit diagram of a high-frequency switch circuit according to a sixth embodiment of the present invention.
- the delay type of the fifth embodiment shown in FIG. Field effect transition The gate of the star 201 is grounded via a resistor 213.
- a large current is applied to the gate of the field effect transistor 201.
- FIG. 9 is a circuit diagram of a single-pole double-throw (SPDT) type high-frequency switch circuit according to a seventh embodiment of the present invention.
- Reference numerals 202a and 202b in the figure are Schottky junction field effect transistors that constitute a switch circuit section for turning on and off the high-frequency signal path, and the sources and drains thereof are resistors 214a and 214b, respectively. Connected via
- the drain terminals of these field-effect transistors 202a and 202b are connected to high-frequency ports RF1 and RF2 via capacitors 224a and 224b that have sufficiently small impedance in the high-frequency band.
- control voltage generation circuit sections 200a and 200b are control voltage generation circuits having the same configuration as that of the control voltage generation circuit (200 in Fig. 8) of the sixth embodiment. It was illustrated.
- Lla and Lib are external control signal input terminals of the control voltage generation circuit units 200a and 200b, and are supplied with complementary control signal voltages from an external circuit (not shown). Also, the internal control voltage output terminals T2a and T2b of the control voltage generation circuit units 200a and 200b are connected to the switch circuit unit via a low-pass filter composed of resistors 217a and 217b and capacitors 232a and 232b, and resistors 215a and 215b. Are connected to the respective gate terminals of the field effect transistors 202a and 202b.
- the high frequency circuit connection terminals Tla and Tib of the control voltage generation circuit units 200a and 200b are connected to the high frequency port RF3. Since the high-frequency switch circuit of this embodiment is an SPDT type high-frequency switch circuit having the high-frequency port RF3 as a common terminal, it can be used regardless of whether RF1 and RF3 are connected or RF2 and RF3 are connected. Even in this case, the high-frequency circuit connection terminals Tla and Tib are connected to the high-frequency signal path. In this high frequency switch circuit, since complementary control signals are input to the external control signal input terminals Lla and Lib, the internal control voltage output terminal (T2a , T2b) Force High potential is output.
- the internal control voltage output terminal T2b is at a high potential for the same reason as in the above-described fifth embodiment, and the Schottky junction dispersion is reduced.
- the gate terminal of the p-type field effect transistor 202b is also at a high potential, and the source / drain terminals are also at a high potential via the Schottky junction.
- the field effect transistor 202b since the voltage between the gate and the source terminal of the depletion-type field effect transistor 202b becomes higher than the threshold voltage, the field effect transistor 202b is turned on and the drain and source terminals are connected.
- the internal control voltage output terminal T2a has a low potential, and the output of this low voltage causes the gate terminal of the depletion-type field effect transistor 202a to have a low potential.
- the drain terminal and the source terminal of the field effect transistor 202a are DC-connected to the source terminal of the depletion type field effect transistor 202b, they have the same potential (High potential). As a result, the Schottky junction of the gate terminal of the depletion type field effect transistor 202a becomes a reverse voltage, and no current flows.
- the voltage between the gate and the source terminal of the depletion-type field effect transistor 202a is lower than the threshold value so that the voltage is turned off, and the source terminal and the drain terminal of the field effect transistor 202a are disconnected. .
- the high frequency ports RF2 and RF3 are connected, while RF1 is disconnected.
- the output potential of the control voltage generation circuit unit 200a does not depend on the high-frequency power and is maintained at 0 V, so the potential of the gate terminal of the field effect transistor 202a does not change. Therefore, the potential difference between the gate and source of this field effect transistor 202a becomes large, and even a high-frequency high-frequency signal deteriorates the isolation between the high-frequency ports RF1 and RF3. It is possible to maintain the shut-off state without causing it.
- FIG. 10 is a circuit diagram of the high-frequency switch circuit according to the eighth embodiment of the present invention.
- reference numeral 302 denotes a depletion-type field effect transistor that constitutes a switch circuit unit for switching between passing and blocking of a high-frequency signal between the high-frequency ports RF1 and RF2.
- the source terminal and the drain terminal are connected to a high frequency signal path, and the source and the drain are connected by a resistor 314 so as to keep the DC potential equal.
- the drain terminal of the field effect transistor 302 is pulled up to a potential of 2.OV via a resistor 318.
- this field effect transistor 302 is a depletion type, when the gate terminal potential is higher than the source 'drain terminal potential by more than the threshold voltage, the source-drain terminal of the field effect transistor 302 is turned on. When it becomes low, it is turned off.
- the threshold voltage of the field effect transistor 302 is ⁇ 1. IV.
- Reference numeral 300 denotes a control voltage generation circuit unit included in the high-frequency switch circuit of this embodiment, L1 is an external control signal input terminal, T2 is an internal control voltage output terminal, and T1 is a high-frequency circuit connection terminal.
- Is a capacitor 331 is a Schottky diode, 311 is a resistor having a resistance value of 10 kQ, and 301 is a depletion type field effect transistor.
- Nl indicates the position of node 1 and n2 indicates the position of node 2.
- the gate terminal of the depletion-type field effect transistor 301 is grounded, and the source terminal of the field effect transistor 301 and the external control signal input terminal L1 are connected.
- the drain terminal is connected to node 2 (n2).
- the resistor 311 has one terminal connected to the node 1 (nl) and the other terminal connected to the external control signal input terminal L1.
- the node l (nl) is connected to the internal control voltage output terminal T2, and the internal control voltage output terminal T2 is connected to the gate terminal of the depletion type field effect transistor 302 via the resistor 315.
- the capacitor 321 has one terminal connected to the high-frequency circuit connection terminal T1 to be connected to the high-frequency signal path, and the other terminal connected to the node 1 (nl).
- the force sword is connected to node 2 (n2) and the anode is connected to node 1 (nl).
- the resistor 315 is provided so that the control voltage generation circuit 300 does not affect the high-frequency signal, and its resistance value needs to be sufficiently larger than the characteristic impedance of the high-frequency signal path.
- the characteristic impedance is 50 ⁇ or 75 ⁇ , so in this embodiment, the resistance value of the resistor 315 is set to 10 k ⁇ .
- the capacitance of the capacitor 321 needs to be sufficiently small in order to suppress the influence of the control voltage suppression circuit 300 on the high-frequency signal to a negligible level. However, if the capacity is too small, rectification does not occur and sufficient voltage is not generated. Therefore, it is desirable that the capacitance of the capacitor 321 be larger than the capacitance value of the Schottky diode 331. In this embodiment, the capacitance of the capacitor 321 is set to 0. lpF.
- the delay type field effect transistor 301 is manufactured by the same process as that of the field effect transistor 302, which is also a depletion type, and has a threshold voltage of ⁇ 1.IV.
- Reference numerals 324a and 324b are provided to cut a DC component so that a bias voltage of 2.0 V is applied to the source terminal and the drain terminal of the depletion-type field effect transistor 302. Because it is premised on that it can pass high-frequency signals, a sufficiently large capacitance value is required. In this embodiment, the capacitances of the procedures 324a and 324b are both 10pF!
- the high voltage 2.0V in the logic circuit is applied to the external control signal input terminal L1.
- the voltage amplitude of the node l (nl) is sufficiently small because the high-frequency signal is low power. No rectifying action occurs!
- the potential of the external control signal input terminal L1 is output from the internal control voltage output terminal T2 via the resistor 311 to the gate terminal of the depletion-type field effect transistor 302 via the resistor 315,
- the potential difference between the gate and source terminals of the field effect transistor 302 is 0 V.
- the delay type field effect transistor 302 is turned on, and the high frequency ports RF1 and RF2 are connected.
- the high voltage 2.OV in the logic circuit is applied to the external control signal input terminal L1, and the high-frequency signal input to the high-frequency port RF1 is high power.
- the high-frequency signal is a high power
- the voltage amplitude of the node l (nl) is sufficiently increased through the capacitor 321 and the rectifying action by the Schottky diode 331 is about to occur.
- the potential of the node 2 (n2) needs to be higher than the potential of the source terminal of the depletion type field effect transistor 301.
- the drain terminal since 2. OV is applied to the source terminal of the depletion-type field effect transistor 301, the drain terminal also has a potential of 2. OV or higher. The potential difference of OV becomes 2.OV, and the field effect transistor 301 is in the off state. For this reason, no forward current flows. Further, the reverse current in the Schottky diode 331 does not flow if the diode characteristic force is a voltage equal to or lower than the withstand voltage. In this way, it can be seen that neither forward current nor reverse current flows through the Schottky key diode 331, and no rectification action actually occurs.
- the low voltage OV in the logic circuit is applied to the external control signal input terminal L1, and When the high-frequency signal input to the high-frequency port RF1 is low power, the voltage amplitude of the node l (nl) is sufficiently small because the high-frequency signal is low power, so the rectifying action by the Schottky diode 331 is also achieved. Does not occur.
- Node 1 (nl) is connected to OV of the external control signal input terminal L1 through the resistor 311. This is connected from the internal control voltage output terminal T2 to the gate terminal of the depletion-type field effect transistor 302. And output through resistor 315.
- the potential of the gate of the depletion-type field effect transistor 302 is also OV, and the potential difference between the gate and source terminals is 2.OV.
- the field effect transistor 302 is turned off, and the high frequency ports RF1 and RF2 are disconnected at high frequency.
- the depletion type field effect transistor 301 is in an on state because the potential difference between its gate and source terminals is 0V. For this reason, the current of the Schottky diode 331 cannot be prevented, and the DC potential of the node 1 (n 1) becomes lower than OV due to the rectifying action of the Schottky diode 331, which is deviated from the internal control voltage output terminal T2. Is output to the gate terminal of the field effect transistor 302 of the type via a resistor 315. For this reason, the potential difference between the gate and source terminals of the dispersion type field effect transistor 302 is lower than 2.0 V, the field effect transistor 302 is turned off, and the high frequency ports RF1 and RF2 are cut off at high frequency. It becomes the state.
- the potential difference between the gate and source terminals of the depletion-type field effect transistor 302 is lower than ⁇ 2.0 V, it is possible to cut off larger power.
- the high-frequency switch circuit of this embodiment operates as a high-frequency switch circuit that can control the interruption and passage of a high-power high-frequency signal even by a low-voltage external control signal.
- FIG. 11 is a circuit diagram of the high-frequency switch circuit according to the ninth embodiment of the present invention.
- the gate of the depletion type field effect transistor 301 of the eighth embodiment shown in FIG. 10 is grounded via a resistor 313.
- a large current is applied to the gate of the field effect transistor 301. This prevents the field effect transistor 301 from being broken.
- FIG. 12 is a circuit diagram of a single pole double throw (SPDT) type high frequency switch circuit according to a tenth embodiment of the present invention.
- Reference numerals 302a and 302b in the figure are Schottky junction field effect transistors that constitute a switch circuit section for turning on and off the high-frequency signal path, and the sources and drains thereof are resistors 314a and 314b, respectively. Are connected through.
- the drain terminals of these field-effect transistors 302a and 302b are connected to high-frequency ports RF1 and RF2 via capacitors 324a and 324b that have sufficiently small impedance in the high-frequency band.
- control voltage generation circuit units 300a and 300b are control voltage generation circuits having the same configuration as the control voltage generation circuit (300 in Fig. 11) of the ninth embodiment, so the details of the circuit configuration are not detailed. It was illustrated.
- Lla and Lib are external control signal input terminals of the control voltage generation circuit units 300a and 300b, and are supplied with complementary control signal voltages from an external circuit (not shown). Also, the internal control voltage output terminals T2a and T2b of the control voltage generation circuit units 300a and 300b are connected to the switch circuit unit via a low-pass filter composed of resistors 317a and 317b and capacitors 332a and 332b, and resistors 315a and 315b. Are connected to respective gate terminals of the Schottky junction type field effect transistors 302a and 302b.
- the high frequency circuit connection terminals Tla and Tib of the control voltage generating circuit sections 300a and 300b are connected to the high frequency port RF3. Since the high-frequency switch circuit of this embodiment is an SPDT type high-frequency switch circuit having the high-frequency port RF3 as a common terminal, it can be used regardless of whether RF1 and RF3 are connected or RF2 and RF3 are connected. Even in cases The high-frequency circuit connection terminals Tla and Tib are connected to the high-frequency signal path.
- the external control signal input terminal Lib becomes a high potential
- the internal control voltage output terminal T2b becomes a high potential for the same reason as in the above-described eighth embodiment, and the Schottky junction dispersion is reduced.
- the gate terminal of the type field effect transistor 302b is also at a high potential, and the source / drain terminals are also at a high potential via the Schottky junction.
- the field effect transistor 302b since the voltage between the gate and the source terminal of the depletion type field effect transistor 302b is higher than the threshold voltage, the field effect transistor 302b is turned on, and the drain and source terminals are connected.
- the internal control voltage output terminal T2a has a low potential, and the output of this low voltage causes the gate terminal of the depletion-type field effect transistor 302a to have a low potential.
- the drain terminal and the source terminal of the field effect transistor 302a are connected to the source terminal of the depletion type field effect transistor 302b in a direct current manner, they have the same potential (High potential). As a result, the Schottky junction of the gate terminal of the depletion-type field effect transistor 302a becomes a reverse voltage, and no current flows.
- the voltage between the gate and the source terminal of the depletion-type field effect transistor 302a is lower than the threshold value so that it is turned off, and the source terminal and the drain terminal of the field effect transistor 302a are disconnected. .
- the high frequency ports RF2 and RF3 are connected, while RF1 is disconnected.
- the output potential of the control voltage generation circuit unit 300b does not depend on the high frequency power and is maintained at 2.0 V, so that the potential of the gate terminal of the field effect transistor 302b does not change. Therefore, the potential difference between the gate and source of this field effect transistor 302b becomes large, and even when a high-power high-frequency signal is used, the isolation between the high-frequency ports RF1 and RF3 is adversely affected. It is possible to maintain the shut-off state without causing it to occur.
- a single-pass filter composed of resistors (317a, 317b) and capacitors (332a, 332b) is connected to the gate terminals of the dispersion type field effect transistors (302a, 302b).
- the gate of the field effect transistor provided in the control voltage generation circuit is grounded via a resistor, or the drain of the field effect transistor is connected to the power intake terminal (or power supply terminal) via a resistor. This is possible in all high-frequency switch circuit embodiments of the present invention.
- the resistance provided in the high-frequency switch circuit of the present invention can be substituted with an active load, or all active elements used in the high-frequency switch circuit can be made to be a depression type field effect transistor having a substantially equal pinch-off voltage, Alternatively, it is possible to connect the internal control voltage output terminal to the switch circuit unit via a single pass filter in all the high-frequency switch circuit modes of the present invention.
- a single-pole multi-throw high-frequency switch circuit is formed by using two or more high-frequency switch circuits of the present invention, specifically, one end of the high-frequency signal path of each high-frequency switch circuit is shared. It can be connected to a high-frequency port to form a single-pole multi-throw high-frequency switch circuit. This is possible in all high frequency switch circuit embodiments of the invention.
- any of the combined high-frequency switch circuits can function as a single "high-frequency switch circuit". It is not always necessary. It is also possible to use a single-pole multi-throw high-frequency switch circuit by using a plurality of control voltage generation circuits having the above-described configuration and connecting these control voltage generation circuits to a common high-frequency port.
- the high-frequency switch circuit of the present invention can be used for a high-frequency wireless communication apparatus that requires switching of a high-frequency signal path, such as a transmission / reception time division method, a mobile phone that supports multiband, and a wireless LAN terminal.
Landscapes
- Electronic Switches (AREA)
- Logic Circuits (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/997,258 US8159283B2 (en) | 2005-08-09 | 2006-07-26 | High frequency switch circuit comprising a transistor on the high frequency path |
KR1020087001385A KR101318763B1 (ko) | 2005-08-09 | 2006-07-26 | 고주파 스위치 회로 |
JP2007529477A JP4760832B2 (ja) | 2005-08-09 | 2006-07-26 | 高周波スイッチ回路 |
EP06781711A EP1914890A1 (en) | 2005-08-09 | 2006-07-26 | High-frequency switch circuit |
CN2006800269331A CN101228694B (zh) | 2005-08-09 | 2006-07-26 | 高频开关电路 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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JP2005-230354 | 2005-08-09 | ||
JP2005230354 | 2005-08-09 | ||
JP2006078355 | 2006-03-22 | ||
JP2006-078355 | 2006-03-22 | ||
JP2006-116255 | 2006-04-20 | ||
JP2006116255 | 2006-04-20 |
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WO2007018037A1 true WO2007018037A1 (ja) | 2007-02-15 |
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PCT/JP2006/314799 WO2007018037A1 (ja) | 2005-08-09 | 2006-07-26 | 高周波スイッチ回路 |
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US (1) | US8159283B2 (ja) |
EP (1) | EP1914890A1 (ja) |
JP (1) | JP4760832B2 (ja) |
KR (1) | KR101318763B1 (ja) |
CN (1) | CN101228694B (ja) |
TW (1) | TWI390844B (ja) |
WO (1) | WO2007018037A1 (ja) |
Cited By (3)
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JP2011103537A (ja) * | 2009-11-10 | 2011-05-26 | Mitsubishi Electric Corp | 高周波半導体スイッチ |
JP2015213296A (ja) * | 2014-03-04 | 2015-11-26 | トライクイント・セミコンダクター・インコーポレイテッドTriQuint Semiconductor,Inc. | ハイパワー高周波数スイッチ素子用バイアス回路 |
US11575373B2 (en) | 2018-10-18 | 2023-02-07 | Qorvo Us, Inc. | Switch circuitry |
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JP2018050127A (ja) * | 2016-09-20 | 2018-03-29 | 株式会社東芝 | 半導体スイッチ |
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JP7357562B2 (ja) | 2020-02-04 | 2023-10-06 | 日清紡マイクロデバイス株式会社 | 高周波スイッチ回路 |
TWI714467B (zh) * | 2020-03-02 | 2020-12-21 | 盛群半導體股份有限公司 | 電壓監控裝置以及其電壓偵測電路 |
CN111988022A (zh) * | 2020-07-31 | 2020-11-24 | 重庆智行者信息科技有限公司 | 一种汽车pwm输出电路 |
CN115117025A (zh) * | 2021-03-23 | 2022-09-27 | 华为技术有限公司 | 一种集成电路、芯片及电子设备 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01120123A (ja) * | 1987-11-02 | 1989-05-12 | Toshiba Corp | 半導体集積回路の入力回路 |
JPH08228138A (ja) * | 1994-12-16 | 1996-09-03 | Matsushita Electron Corp | 半導体集積回路 |
JPH09116408A (ja) * | 1995-10-19 | 1997-05-02 | Hitachi Ltd | 半導体集積回路 |
JPH1084267A (ja) * | 1996-09-06 | 1998-03-31 | Hitachi Ltd | Rfスイッチおよび移動体通信装置 |
JP2000307413A (ja) * | 1999-04-19 | 2000-11-02 | Sony Corp | 電圧変換回路及び通信回路網 |
JP2004048692A (ja) * | 2002-05-17 | 2004-02-12 | Nec Corp | 高周波スイッチ回路 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH086653A (ja) | 1994-06-16 | 1996-01-12 | Sony Corp | レファレンス電圧発生回路 |
JPH0851318A (ja) * | 1994-08-08 | 1996-02-20 | Oki Electric Ind Co Ltd | 利得可変回路とその集積回路 |
JP3169775B2 (ja) | 1994-08-29 | 2001-05-28 | 株式会社日立製作所 | 半導体回路、スイッチ及びそれを用いた通信機 |
US5903178A (en) * | 1994-12-16 | 1999-05-11 | Matsushita Electronics Corporation | Semiconductor integrated circuit |
JPH08330996A (ja) * | 1995-05-30 | 1996-12-13 | Sony Corp | アンテナ共用器 |
JP3249393B2 (ja) * | 1995-09-28 | 2002-01-21 | 株式会社東芝 | スイッチ回路 |
JP3238616B2 (ja) | 1995-09-29 | 2001-12-17 | 松下電器産業株式会社 | 半導体スイッチ回路 |
JP3711193B2 (ja) * | 1998-01-16 | 2005-10-26 | 三菱電機株式会社 | 送受信切り換え回路 |
JP2000004149A (ja) | 1998-06-16 | 2000-01-07 | New Japan Radio Co Ltd | Spdtスイッチ半導体集積回路 |
TWI252582B (en) | 2001-02-27 | 2006-04-01 | Sanyo Electric Co | Switch circuit device |
JP2003283258A (ja) | 2002-03-20 | 2003-10-03 | Ricoh Co Ltd | 低電圧動作の基準電圧源回路 |
JP2004096441A (ja) * | 2002-08-30 | 2004-03-25 | Fujitsu Quantum Devices Ltd | スイッチング回路、スイッチングモジュール及びその制御方法 |
JP2005005858A (ja) | 2003-06-10 | 2005-01-06 | Sanyo Electric Co Ltd | スイッチ回路装置 |
-
2006
- 2006-07-26 WO PCT/JP2006/314799 patent/WO2007018037A1/ja active Application Filing
- 2006-07-26 JP JP2007529477A patent/JP4760832B2/ja not_active Expired - Fee Related
- 2006-07-26 US US11/997,258 patent/US8159283B2/en not_active Expired - Fee Related
- 2006-07-26 KR KR1020087001385A patent/KR101318763B1/ko active IP Right Grant
- 2006-07-26 CN CN2006800269331A patent/CN101228694B/zh not_active Expired - Fee Related
- 2006-07-26 EP EP06781711A patent/EP1914890A1/en not_active Withdrawn
- 2006-08-04 TW TW095128571A patent/TWI390844B/zh not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01120123A (ja) * | 1987-11-02 | 1989-05-12 | Toshiba Corp | 半導体集積回路の入力回路 |
JPH08228138A (ja) * | 1994-12-16 | 1996-09-03 | Matsushita Electron Corp | 半導体集積回路 |
JPH09116408A (ja) * | 1995-10-19 | 1997-05-02 | Hitachi Ltd | 半導体集積回路 |
JPH1084267A (ja) * | 1996-09-06 | 1998-03-31 | Hitachi Ltd | Rfスイッチおよび移動体通信装置 |
JP2000307413A (ja) * | 1999-04-19 | 2000-11-02 | Sony Corp | 電圧変換回路及び通信回路網 |
JP2004048692A (ja) * | 2002-05-17 | 2004-02-12 | Nec Corp | 高周波スイッチ回路 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011103537A (ja) * | 2009-11-10 | 2011-05-26 | Mitsubishi Electric Corp | 高周波半導体スイッチ |
JP2015213296A (ja) * | 2014-03-04 | 2015-11-26 | トライクイント・セミコンダクター・インコーポレイテッドTriQuint Semiconductor,Inc. | ハイパワー高周波数スイッチ素子用バイアス回路 |
US11575373B2 (en) | 2018-10-18 | 2023-02-07 | Qorvo Us, Inc. | Switch circuitry |
Also Published As
Publication number | Publication date |
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CN101228694A (zh) | 2008-07-23 |
JPWO2007018037A1 (ja) | 2009-02-19 |
TWI390844B (zh) | 2013-03-21 |
EP1914890A1 (en) | 2008-04-23 |
JP4760832B2 (ja) | 2011-08-31 |
US20100090747A1 (en) | 2010-04-15 |
US8159283B2 (en) | 2012-04-17 |
CN101228694B (zh) | 2010-12-08 |
TW200713817A (en) | 2007-04-01 |
KR101318763B1 (ko) | 2013-10-16 |
KR20080027849A (ko) | 2008-03-28 |
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