CN118092562A - Ultra-wideband active bias controller circuit - Google Patents
Ultra-wideband active bias controller circuit Download PDFInfo
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- CN118092562A CN118092562A CN202410248626.8A CN202410248626A CN118092562A CN 118092562 A CN118092562 A CN 118092562A CN 202410248626 A CN202410248626 A CN 202410248626A CN 118092562 A CN118092562 A CN 118092562A
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- 238000003780 insertion Methods 0.000 description 3
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- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses an ultra-wideband active bias controller circuit, which comprises: the first capacitor is respectively connected with the RF_DC port and the RFOUT port, and the RF_DC port is electrically connected with the first capacitor, the active bias controller and the second resistor through the first inductor, the second inductor and the third inductor in sequence; a second capacitor is connected between the second inductor and the third inductor, and the other end of the second capacitor is connected to the ground through a first resistor; the active bias controller is connected with a third capacitor through a second resistor, the third capacitor is connected to the ground, and the active bias controller is connected with the ground through the third resistor; the invention can solve the problem that the power supply voltage and the signal output share the output pin to influence the radio frequency main channel signal when the active bias controller provides the voltage time sequence for the broadband amplifier device.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to an ultra-wideband active bias controller circuit.
Background
The ultra-wideband active bias controller circuit is an electronic circuit for an ultra-wideband communication system, and can provide stable bias voltage and voltage control time sequence for an ultra-wideband amplifier so as to ensure that the amplifier can maintain optimal performance under various working conditions. Ultra wideband technology is a wireless communication technology that is characterized by the ability to transmit data over a very wide frequency range, typically from hundreds of megahertz to gigahertz. Because the frequency range of the ultra wideband signal is very wide, the amplifier is required to have ultra wide bandwidth, low noise, high linearity, and the like. To achieve these characteristics, a special bias control circuit is required to manage the bias conditions of the amplifier.
The active bias controller is an electronic device, and can automatically adjust the grid voltage of an external amplifier so as to realize constant bias current, and mainly provides a voltage time sequence (the power-on time sequence of a grid electrode and a drain electrode) for the amplifier device and positive and negative voltages, thereby providing stable and reliable bias for the amplifier and ensuring the normal operation of the amplifier.
There are more and more broadband amplifier devices that need to provide voltage control timing, and the supply voltage and the signal output share an output pin, but when the supply voltage and the signal output share the same output pin, because the fluctuation or ripple of the supply voltage may be coupled into the radio frequency signal, the signal is distorted or noise is increased, or the switching operation or transient current in the supply circuit may interfere with the signal of the radio frequency main circuit, which affects the performance of the whole radio frequency system.
In view of this, the present application provides an ultra wideband active bias controller circuit that implements the functions of voltage timing control and power supply to the signal output pins of the wideband amplifier device.
Disclosure of Invention
To overcome the above-mentioned drawbacks, an object of the present invention is to provide an ultra-wideband active bias controller circuit.
In order to achieve the above purpose, the technical scheme adopted by the invention comprises the following steps: an rf_dc port, an RFOUT port, a first inductor, a second inductor, a third inductor, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, and an active bias controller;
The first capacitor is respectively connected with the RF_DC port and the RFOUT port, and the RF_DC port is electrically connected with the first capacitor, the active bias controller and the second resistor through the first inductor, the second inductor and the third inductor in sequence; a second capacitor is connected between the second inductor and the third inductor, and the other end of the second capacitor is connected to the ground through a first resistor; the active bias controller is connected to a third capacitor through a second resistor, the third capacitor is connected to ground, and the active bias controller is connected to ground through the third resistor.
The source bias controller is configured on the ultra-wideband circuit, so that the active bias controller can provide stable and accurate bias voltage for the amplifier when being independently used as the bias controller, can accurately control the voltage time sequence, ensures the stable and reliable performance of the amplifier, and does not directly influence the radio frequency main circuit signal; meanwhile, the active bias controller is independently used as a bias device to supply power to the radio frequency circuit of the amplifier, so that interference or influence on the radio frequency main path signal can not be generated, and the stability of the radio frequency main path signal is improved.
In a preferred embodiment of the above ultra-wideband active bias controller circuit, the first capacitance is 0.1 μf.
In the preferred technical solution of the ultra-wideband active bias controller circuit, the second capacitor is 100pF.
In the preferred technical scheme of the ultra-wideband active bias controller circuit, the third capacitor is 10nF.
In the preferred technical scheme of the ultra-wideband active bias controller circuit, the first inductor is 270nH.
In the preferred technical scheme of the ultra-wideband active bias controller circuit, the second inductor is 270nH.
In the preferred technical scheme of the ultra-wideband active bias controller circuit, the third inductance is 1.5 mu H.
It should be noted that, the values given by the first capacitor, the second capacitor, the third capacitor, the first inductor, the second inductor and the third inductor are only examples of an embodiment, and the specific range of values can still be adjusted according to the actual working requirement.
In the preferred technical solution of the ultra-wideband active bias controller circuit, the first resistor is 320 Ω. The value of the first resistor can be adjusted according to the working condition.
In the preferred technical solution of the ultra-wideband active bias controller circuit, the second resistor is 0Ω. The value of the second resistor can be adjusted according to the working condition. The second capacitor, the first resistor, the third capacitor and the second resistor are auxiliary functions in the ultra-wideband active bias controller circuit, and are used for reducing the influence of the third inductance high-frequency parasitic parameter on the main transmission line, reducing the reactance of the whole frequency band and improving the performance and the stability of the ultra-wideband active bias controller circuit.
In the preferred technical solution of the ultra-wideband active bias controller circuit, the third resistor is 940 Ω.
The invention has the beneficial effects that the active bias controller is configured on the ultra-wideband circuit, so that the active bias controller can provide stable and accurate bias voltage for the amplifier when being independently used as the bias controller, can accurately control the voltage time sequence, ensures the stable and reliable performance of the amplifier, and does not directly influence the radio frequency main circuit signal; meanwhile, the active bias controller is independently used as a bias device to supply power to the radio frequency circuit of the amplifier, so that interference or influence on the radio frequency main path signal can not be generated, and the stability of the radio frequency main path signal is improved.
Drawings
FIG. 1 is a schematic diagram of an ultra wideband active bias controller circuit;
FIG. 2 is an embodiment of an ultra wideband active bias controller circuit powering an amplifier;
FIG. 3 is a schematic diagram of the simulation results of the circuit insertion loss of the ultra wideband active bias controller;
FIG. 4 is a schematic diagram of the standing wave simulation results of an ultra-wideband active bias controller circuit;
In the figure: the first inductor 101, the second inductor 102, the third inductor 103, the first capacitor 201, the second capacitor 202, the third capacitor 203, the first resistor 301, the second resistor 302, the third resistor 303 and the active bias controller 401.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
As shown in fig. 1 to 4, the ultra-wideband active bias controller circuit of the present invention includes: an rf_dc port, an RFOUT port, a first inductor 101, a second inductor 102, a third inductor 103, a first capacitor 201, a second capacitor 202, a third capacitor 203, a first resistor 301, a second resistor 302, a third resistor 303, and an active bias controller 401;
The first capacitor 201 is connected to an rf_dc port and an RFOUT port, and the rf_dc port is electrically connected to the first capacitor 201 and the active bias controller 401 is electrically connected to the second resistor 302 through the first inductor 101, the second inductor 102 and the third inductor 103 in sequence; a second capacitor 202 is connected between the second inductor 102 and the third inductor 103, and the other end of the second capacitor 202 is connected to the ground through a first resistor 301; the active bias controller 401 is connected to the third capacitor 203 through the second resistor 302, the third capacitor 203 is connected to ground, and the active bias controller 401 is connected to ground through the third resistor 303.
Referring to fig. 1, an active bias controller 401 is an electronic device, and the active bias controller 401 may automatically adjust the gate voltage of an external amplifier to achieve a constant bias current, and the active bias controller 401 is typically used to provide an appropriate bias for the amplifier to ensure its normal operation and stable performance. The model of the active bias controller 401 in the application is HMC980, and in other possible implementation manners, other models of active bias controllers 401 can be selected for replacement; the active bias controller 401 of the present application has an Rset port, a Vdrain port, a VG2 port, a VGATE port, and a Vin port, where the Vdrain port is electrically connected to the port of the third inductor 103 through a line, the Vdrain port is converted to VDD by the ultra wideband active bias controller circuit to supply power to the amplifier, the Rset port is connected to ground by the third resistor 303, the third resistor 303 performs calculation configuration according to the I dd current of the amplifier, the Vin port is the input of the voltage of the ultra wideband active bias controller 401, and the VG2 port and the VGATE port provide voltage output for the amplifier.
The RFOUT port is used to output a Radio Frequency (RF) signal. In the ultra-wideband active bias controller circuit, the RFOUT port is an output channel of a radio frequency signal, and is used for transmitting the radio frequency signal processed by the amplifier to a next-stage circuit or an antenna.
The rf_dc port can fulfill the requirements of ultra-wideband amplifiers in terms of Radio Frequency (RF) and Direct Current (DC); the RF_DC port has the function of transmitting a radio frequency signal and a direct current bias signal. In ultra-wideband active bias controller circuits, the rf_dc port is used to provide both direct current bias and radio frequency signals to achieve more complex circuit control and signal processing.
The first inductor 101 and the second inductor 102 are mainly used for improving high-frequency performance. By reasonably selecting the inductance of the first inductor 101 and the second inductor 102, the filtering or suppression of signals in a specific frequency range can be realized, and the stability of high-frequency performance is further enhanced.
It should be noted that at high frequencies, the performance of the inductor is affected to some extent by the influence of parasitic parameters, including parasitic capacitance and parasitic inductance, which affect the inductance and quality factor of the inductor, and in addition, in terms of expanding low frequencies, the influence of the parasitic parameters on the performance of the inductor can be reduced by reasonably selecting the inductance value and the packaging form. Therefore, the third inductor 103 is a DC bias inductor, and generally uses 0805 packages with large inductance value, and has large parasitic parameters at high frequency, and is mainly used for expanding low frequency.
Specifically, the price of the first inductor 101, the second inductor 102 and the third inductor 103 is lower than that of an ultra-wideband bias chip used in a traditional ultra-wideband active bias controller circuit, and meanwhile, the installation simplicity is lower than that of a traditional conical inductor, so that welding is facilitated.
The second capacitor 202, the first resistor 301, the third capacitor 203 and the second resistor 302 are auxiliary functions in the ultra-wideband active bias controller circuit, and are used for reducing the influence of high-frequency parasitic parameters of the third inductor 103 on a main transmission line, reducing the reactance of the whole frequency band and improving the performance and stability of the ultra-wideband active bias controller circuit. The first capacitor 201, the second capacitor 202 and the third capacitor 203 adopt 560L series Ultra Broadband capacitors of AVX.
Referring to fig. 3, in one embodiment of the ultra wideband active bias controller supplying power to the amplifier, the VG2 port and the VGATE port of the active bias controller 401 are both connected to the input terminal of the amplifier, the output terminal of the amplifier is connected to the rf_dc port of the ultra wideband active bias controller circuit, the Vdrain port of the active bias controller 401 is electrically connected to the port of the third inductor 103, the Vdrain port is converted to VDD by the ultra wideband active bias controller circuit to supply power to the amplifier, the Rset port is connected to ground by the third resistor 303, and the Vin port is the voltage input port; by this arrangement, the active bias controller 401, when used alone as a bias controller, has the main purpose of providing stable and accurate bias voltages for the amplifier and being able to accurately control the timing of these voltages, during which it ensures stable and reliable performance of the amplifier, but does not directly affect the rf main signal; likewise, the active bias controller 401 alone acts as a bias to provide power to the amplifier rf circuitry without interfering or affecting the rf main signal.
In a specific embodiment, the active bias controller Vin is set to 8.5V, VGATE is configured to-2V, VGATE is configured to 1.5V, vdrain output is 8V, and VGATE is raised to operate the amplifier in the I dd state; the first capacitor 201 has a size of 0.1 μF; the second capacitor 202 has a size of 100pF; the third capacitor 203 has a size of 10nF; the first inductor 101 has a size of 270nH; the second inductor 102 has a size of 270nH; the third inductance 103 has a size of 1.5 μh; the first resistor 301 has a size of 320 Ω; the second resistor 302 has a size of 0Ω; the third resistor 303 has a size of 940 Ω.
Fig. 3 is an insertion loss curve from the rf_dc end to the RF end, fig. 4 is an rf_dc port standing wave curve and an RFOUT port standing wave curve, and fig. 3 and fig. 4 show that in the range of 10-20000MHz working frequency band, the insertion loss from the rf_dc end to the RF end is less than 0.45dB, and the standing waves of the rf_dc end and the RFOUT port are less than-15 dB, so that the ultra-wideband active bias controller circuit of the present application has high transmission quality and reliability, and has high signal transmission efficiency and stability.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. An ultra-wideband active bias controller circuit, comprising: an rf_dc port, an RFOUT port, a first inductor, a second inductor, a third inductor, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, and an active bias controller;
the first capacitor is respectively connected with the RF_DC port and the RFOUT port, and the RF_DC port is electrically connected with the first capacitor, the active bias controller and the second resistor through the first inductor, the second inductor and the third inductor in sequence;
a second capacitor is connected between the second inductor and the third inductor, and the other end of the second capacitor is connected to the ground through a first resistor;
The active bias controller is connected to a third capacitor through a second resistor, the third capacitor is connected to ground, and the active bias controller is connected to ground through the third resistor.
2. The ultra wideband active bias controller circuit of claim 1, wherein: the first capacitance is 0.1 μF.
3. The ultra wideband active bias controller circuit of claim 1, wherein: the second capacitance is 100pF.
4. The ultra wideband active bias controller circuit of claim 1, wherein: the third capacitance is 10nF.
5. The ultra wideband active bias controller circuit of claim 1, wherein: the first inductance is 270nH.
6. The ultra wideband active bias controller circuit of claim 1, wherein: the second inductance is 270nH.
7. The ultra wideband active bias controller circuit of claim 1, wherein: the third inductance is 1.5 muh.
8. The ultra wideband active bias controller circuit of claim 1, wherein: the first resistor is 320 omega.
9. The ultra wideband active bias controller circuit of claim 1, wherein: the second resistance is 0Ω.
10. The ultra wideband active bias controller circuit of claim 1, wherein: the third resistance is 940 omega.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410248626.8A CN118092562A (en) | 2024-03-05 | 2024-03-05 | Ultra-wideband active bias controller circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410248626.8A CN118092562A (en) | 2024-03-05 | 2024-03-05 | Ultra-wideband active bias controller circuit |
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| Publication Number | Publication Date |
|---|---|
| CN118092562A true CN118092562A (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410248626.8A Pending CN118092562A (en) | 2024-03-05 | 2024-03-05 | Ultra-wideband active bias controller circuit |
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| CN (1) | CN118092562A (en) |
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- 2024-03-05 CN CN202410248626.8A patent/CN118092562A/en active Pending
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