CN211063605U - Ultra-wideband temperature compensation amplifier circuit and wideband receiver thereof - Google Patents
Ultra-wideband temperature compensation amplifier circuit and wideband receiver thereof Download PDFInfo
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- CN211063605U CN211063605U CN202020040342.7U CN202020040342U CN211063605U CN 211063605 U CN211063605 U CN 211063605U CN 202020040342 U CN202020040342 U CN 202020040342U CN 211063605 U CN211063605 U CN 211063605U
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Abstract
The utility model discloses an ultra wide band temperature compensated amplifier circuit and broadband receiver thereof belongs to the communication field. The ultra-wideband temperature compensation amplifier circuit comprises an ultra-wideband low-noise amplifier, wherein a positive power supply input end of the ultra-wideband low-noise amplifier is connected with a positive power supply unit, and a negative power supply input end of the ultra-wideband low-noise amplifier is connected with a positive power supply unit through a voltage-dividing current-limiting resistor R2Connected with a negative power supply Vee, and a voltage-dividing current-limiting resistor R2The nodes between the negative power supply input end and the grounding filter capacitor C4And a grounded negative temperature coefficient thermistor R3Connecting; input end of ultra-wideband low-noise amplifier and filter capacitor C7Connecting, filtering capacitor C7The other end of the ultra-wideband temperature compensation amplifier circuit is an input end of the ultra-wideband temperature compensation amplifier circuit; output end of ultra-wideband low-noise amplifier and filter capacitor C8Connecting, filtering capacitor C8The other end of the ultra-wideband temperature compensation amplifier circuit is the output end of the ultra-wideband temperature compensation amplifier circuit.
Description
Technical Field
The utility model relates to the field of communication, concretely relates to ultra wide band temperature compensated amplifier circuit and broadband receiver thereof.
Background
People's demand for communication is higher and higher, and in order to improve communication efficiency, reduce communication cost, ultra wide band technique has come to bear, and ultra wide band low noise amplifier is as the important module of broadband receiver, and its performance directly influences the whole performance of broadband receiver. At present, the gain temperature compensation of the common ultra-wideband low-noise amplifier needs to be additionally increased, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough among the prior art, the utility model aims at providing an ultra wide band temperature compensated amplifier circuit and broadband receiver thereof, its self can realize temperature compensation, and the cost is lower.
In order to achieve the purpose of the invention, the utility model adopts the technical scheme that:
the ultra-wideband temperature compensation amplifier circuit comprises an ultra-wideband low-noise amplifier, wherein a positive power supply input end of the ultra-wideband low-noise amplifier is connected with a positive power supply unit, and a negative power supply input end of the ultra-wideband low-noise amplifier is connected with a negative power supply unit through a voltage-dividing current-limiting resistor R2Connected with a negative power supply Vee, and a voltage-dividing current-limiting resistor R2The nodes between the negative power supply input end and the grounding filter capacitor C4And a grounded negative temperature coefficient thermistor R3Connecting; input end of ultra-wideband low-noise amplifier and filter capacitor C7Connecting, filtering capacitor C7The other end of the ultra-wideband temperature compensation amplifier circuit is an input end of the ultra-wideband temperature compensation amplifier circuit; output end of ultra-wideband low-noise amplifier and filter capacitor C8Connecting, filtering capacitor C8The other end of the ultra-wideband temperature compensation amplifier circuit is the output end of the ultra-wideband temperature compensation amplifier circuit.
Furthermore, the positive power supply unit comprises grounding filter capacitors C respectively connected with the input ends of the positive power supply6And a grounding filter capacitor C5And positive power supply Vcc, grounded filter capacitor C5Filter capacitor C with ground ratio of node to positive power supply Vcc6The node between the positive power supply Vcc is closer to the positive power supply Vcc.
Further, a grounded filter capacitor C6Filter capacitor C7And a filter capacitor C8The parameters of (3) are the same.
Further, the air conditioner is provided with a fan,voltage-dividing current-limiting resistor R2And the second voltage-dividing current-limiting resistor is connected in parallel or in series.
Further, a grounded negative temperature coefficient thermistor R3The second thermistor is connected in parallel or in series.
Further, the model of the ultra-wideband low noise amplifier is CHA-3024-99.
On the other hand, the scheme also provides a broadband receiver which comprises the ultra-wideband temperature compensation amplifier circuit provided by the scheme.
The utility model has the advantages that:
using voltage-dividing current-limiting resistor R2And a grounded negative temperature coefficient thermistor R3The voltage is divided to supply negative pressure to the ultra-wideband low-noise amplifier, and then the negative pressure is supplied to the ultra-wideband low-noise amplifier through a grounding filter capacitor C4The power supply ripple of the negative pressure is reduced, and the negative pressure is more stable, so that the gain of the ultra-wideband low-noise amplifier (namely the gain of the ultra-wideband temperature compensation amplifier circuit) is more stable. Earthed negative temperature coefficient thermistor R3The temperature coefficient is negative, the higher the temperature is, the lower the resistance value is, the lower the voltage division is, and the lower the power supply negative voltage of the ultra-wideband low-noise amplifier is. Therefore, under the condition of high temperature, the gain of the ultra-wideband low-noise amplifier is high (namely the gain of the ultra-wideband temperature compensation amplifier circuit is high); under the condition of low temperature, the gain of the ultra-wideband low-noise amplifier is low (namely the gain of the ultra-wideband temperature compensation amplifier circuit is low), and further the temperature compensation is realized. The temperature compensation mode has low manufacturing cost and is suitable for popularization and application.
Filter capacitor C7And a filter capacitor C8The input end and the output end of the ultra-wideband temperature compensation amplifier circuit are prevented from having direct current, so that the ultra-wideband temperature compensation amplifier circuit and the next stage of the ultra-wideband temperature compensation amplifier circuit are protected.
Drawings
FIG. 1 is a schematic diagram of an ultra-wideband temperature compensated amplifier circuit in an embodiment;
fig. 2 is a graph of gain curves of an ultra-wideband low noise amplifier at different voltages in an embodiment.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art. It should be understood that the embodiments described below are only some embodiments of the invention, and not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step, without departing from the spirit and scope of the present invention as defined and defined by the appended claims, fall within the scope of protection of the invention.
As shown in figure 1, the ultra-wideband temperature compensation amplifier circuit comprises an ultra-wideband low-noise amplifier, wherein a positive power supply input end of the ultra-wideband low-noise amplifier is connected with a positive power supply unit, and a negative power supply input end of the ultra-wideband low-noise amplifier is connected with a negative power supply unit through a voltage-dividing current-limiting resistor R2Connected with a negative power supply Vee, and a voltage-dividing current-limiting resistor R2The nodes between the negative power supply input end and the grounding filter capacitor C4And a grounded negative temperature coefficient thermistor R3Connecting; input end of ultra-wideband low-noise amplifier and filter capacitor C7Connecting, filtering capacitor C7The other end of the ultra-wideband temperature compensation amplifier circuit is an input end of the ultra-wideband temperature compensation amplifier circuit; output end of ultra-wideband low-noise amplifier and filter capacitor C8Connecting, filtering capacitor C8The other end of the ultra-wideband temperature compensation amplifier circuit is the output end of the ultra-wideband temperature compensation amplifier circuit.
In practice, as shown in fig. 1, the positive power supply unit in this embodiment includes grounding filter capacitors C respectively connected to the positive power input terminals6And a grounding filter capacitor C5And positive power supply Vcc, grounded filter capacitor C5Filter capacitor C with ground ratio of node to positive power supply Vcc6The node between the positive power supply Vcc is closer to the positive power supply Vcc. Grounding filter capacitor C5The power supply ripple of the positive voltage input into the ultra-wideband low-noise amplifier is reduced, and the positive voltage is further stable, so that the gain of the ultra-wideband low-noise amplifier (namely the gain of the ultra-wideband temperature compensation amplifier circuit) is more stable. Grounding filter capacitor C6So as to filter out the high-frequency ripple of the power supplyAnd the RF signal of the main circuit of the amplifier, preventing the series connection to other stages through the power supply, and the filter capacitor C is generally grounded6Is much smaller than the grounded filter capacitor C5The parameter (c) of (c).
Wherein, the grounding filter capacitor C6Filter capacitor C7And a filter capacitor C8The parameters of (3) are the same. Specifically, the model of the ultra-wideband low noise amplifier is CHA-3024-99, Vee is-5V, Vcc is plus 5V, R2Is 10k omega, R31k omega at normal temperature, C4And C50.1. mu.F, C6、C7And C8Is 100 pF.
The gain curves of the ultra-wideband low-noise amplifier under different voltages are shown in fig. 2, which shows that the gain is adjustable, and the gain changes slowly along with the voltage change, and the gain is suitable for temperature compensation.
In another embodiment, the voltage dividing and current limiting resistor R2A second voltage-dividing current-limiting resistor is connected in parallel or in series to change the grounding negative temperature coefficient thermistor R according to the requirement3And the second thermistor is used for integral voltage division, so that the negative voltage required by the negative power supply input end of the specific ultra-wideband low-noise amplifier is adapted.
Wherein, the grounding negative temperature coefficient thermistor R3A second thermistor is connected in parallel or in series to change the voltage dividing and current limiting resistor R according to the requirement2And the integral temperature compensation slope of the second voltage-dividing current-limiting resistor, so as to change the temperature compensation value.
In a second aspect, the present scheme further provides a wideband receiver, which includes the ultra-wideband temperature compensation amplifier circuit provided by the present scheme.
Claims (7)
1. The ultra-wideband temperature compensation amplifier circuit is characterized by comprising an ultra-wideband low-noise amplifier, wherein a positive power supply input end of the ultra-wideband low-noise amplifier is connected with a positive power supply unit, and a negative power supply input end of the ultra-wideband low-noise amplifier is connected with a positive power supply unit through a voltage-dividing current-limiting resistor R2Connected with a negative power supply Vee, and the voltage-dividing current-limiting resistor R2The nodes between the negative power supply input end and the grounding filter capacitor C4And a grounded negative temperature coefficient thermistor R3Connecting; input end of ultra-wideband low-noise amplifier and filter capacitor C7Connected, said filter capacitor C7The other end of the ultra-wideband temperature compensation amplifier circuit is an input end of the ultra-wideband temperature compensation amplifier circuit; output end of ultra-wideband low-noise amplifier and filter capacitor C8Connected, said filter capacitor C8The other end of the ultra-wideband temperature compensation amplifier circuit is the output end of the ultra-wideband temperature compensation amplifier circuit.
2. The ultra-wideband temperature compensated amplifier circuit according to claim 1, wherein the positive power supply unit comprises a ground filter capacitor C connected to the positive power supply input terminals, respectively6And a grounding filter capacitor C5And a positive power supply Vcc, the grounded filter capacitor C5Filter capacitor C with ground ratio of node to positive power supply Vcc6The node between the positive power supply Vcc is closer to the positive power supply Vcc.
3. The ultra-wideband temperature compensated amplifier circuit of claim 2, in which the ground filter capacitor C6Filter capacitor C7And a filter capacitor C8The parameters of (3) are the same.
4. The ultra-wideband temperature compensated amplifier circuit of claim 1, in which the voltage dividing current limiting resistor R2And the second voltage-dividing current-limiting resistor is connected in parallel or in series.
5. The ultra-wideband temperature compensated amplifier circuit of claim 1, in which the grounded negative temperature coefficient thermistor R3The second thermistor is connected in parallel or in series.
6. The ultra-wideband temperature compensated amplifier circuit according to any of claims 1-5, wherein the ultra-wideband low noise amplifier has a model number CHA-3024-99.
7. A wideband receiver comprising the ultra-wideband temperature compensated amplifier circuit of any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020040342.7U CN211063605U (en) | 2020-01-09 | 2020-01-09 | Ultra-wideband temperature compensation amplifier circuit and wideband receiver thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020040342.7U CN211063605U (en) | 2020-01-09 | 2020-01-09 | Ultra-wideband temperature compensation amplifier circuit and wideband receiver thereof |
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| CN211063605U true CN211063605U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020040342.7U Active CN211063605U (en) | 2020-01-09 | 2020-01-09 | Ultra-wideband temperature compensation amplifier circuit and wideband receiver thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615592A (en) * | 2020-11-25 | 2021-04-06 | 中国电子科技集团公司第二十九研究所 | Miniaturized self-adaptation temperature compensation circuit of high driving capability |
| CN113872541A (en) * | 2021-08-23 | 2021-12-31 | 中国电子科技集团公司第二十九研究所 | Ultra-wideband microwave temperature compensation circuit |
-
2020
- 2020-01-09 CN CN202020040342.7U patent/CN211063605U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615592A (en) * | 2020-11-25 | 2021-04-06 | 中国电子科技集团公司第二十九研究所 | Miniaturized self-adaptation temperature compensation circuit of high driving capability |
| CN113872541A (en) * | 2021-08-23 | 2021-12-31 | 中国电子科技集团公司第二十九研究所 | Ultra-wideband microwave temperature compensation circuit |
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