CN108809262B - Reconfigurable receiver front end with low power consumption and low cost for supporting multiple frequencies and multiple modes - Google Patents
Reconfigurable receiver front end with low power consumption and low cost for supporting multiple frequencies and multiple modes Download PDFInfo
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Abstract
The invention discloses a reconfigurable receiver front end with low power consumption and low cost for supporting multi-frequency and multi-mode, which comprises a multi-frequency band low-noise amplifying circuit; the input end of the multi-band low-noise amplifying circuit comprises a primary coil and at least two secondary coils, different secondary coils and resonant capacitors are selected for matching radio-frequency signals of different frequency bands, so that the radio-frequency signals of different frequency bands are subjected to resonant amplification, single-ended radio-frequency signals of at least three frequency bands are correspondingly converted into differential signals, common-mode noise is suppressed, and the matching and low-noise performance of the multi-band input end can be well realized due to the transformer structure of the primary coil and the two secondary coils.
Description
Technical Field
The invention relates to a wireless communication technology, in particular to a reconfigurable receiver front end which has low power consumption and low cost and supports multiple frequencies and multiple modes.
Background
With the development of mobile communication technology, single chip design with low power consumption, low cost and supporting multiple modes and multiple frequencies becomes mainstream. Receiver chips for implementing multi-standard, multi-frequency and multi-mode on a single chip can be divided into two categories: one type is a broadband Receiver, as shown in fig. 1, the JSSC in 2013 of references j.kim and j.silver-Martinez, "Low-Power, Low-Cost CMOS Direct-Conversion Receiver Front-End for Multistandard Applications," in IEEE journal of Solid-State Circuits, vol.48, No.9, pp.2090-2103, sept.2013 introduces a broadband Receiver Front-End architecture with a frequency band range of 1.4G-5.2G. The radio frequency input signal is amplified by a broadband low noise amplifier and then mixed with a local oscillator signal, the radio frequency signal is converted into a baseband signal, and then the baseband signal is converted into a voltage signal and a high frequency interference signal is filtered by an amplifier (TIA) which has a filtering function and converts current into voltage. The circuit can process signals with very wide frequency bands, but has the defects that the circuit cannot be reconstructed and cannot simultaneously meet various applications; meanwhile, in order to ensure the performance of the whole frequency band, a receiver which consumes more power and has the overall performance index inferior to that of a single frequency is often needed.
Another type is a multilink receiver, as shown in fig. 2, references h.s.hsu, q.y.duan and y.t.liao, "a low power 2.4/5.2GHz current receiver using current-reused receiver," 2016IEEE International Symposium on Circuits and Systems (ISCAS), Montreal, QC,2016, pp.1398-1401, in the 2016 ISCAS, a low power receiver capable of processing 2.4GHz and 5.2GHz signals simultaneously is proposed, and from its structural diagram we can see that a radio frequency signal is fed into a Low Noise Amplifier (LNA) through an antenna, and then the signals are processed separately in two paths. The Low Noise Amplifier (LNA) can amplify 2.4G and 5.2G signals simultaneously, the LNA schematic diagram comprises 6 inductors, occupies a large area, and meanwhile, the inductors are easy to interfere and couple with each other, so that the complexity of system design is increased. The circuit can simultaneously process signals of two frequency bands; however, a large amount of inductors are used in the LNA design, which wastes chip area; not reconfigurable, resulting in some modules being reconfigured repeatedly.
One of the schematic structural diagrams of a prior art Low Noise Amplifier (LNA) is shown in fig. 3, and includes a primary winding S11 and a secondary winding S12, a resonant circuit is formed by connecting a resonant capacitor C1 in parallel at two ends of the secondary winding S12, the values of the secondary winding S12 and the resonant capacitor C1 determine a first resonant frequency, so as to determine that the low noise amplifier circuit (LNA) can receive radio frequency signals of that frequency band, one end of the resonant circuit is connected to a gate of a first common source transistor M1 of the first cascode amplifying circuit, the other end is connected to a gate of a second common source transistor M3 of the second cascode amplifying circuit, a source of the first common source transistor M1 is connected to one end of a source degeneration inductor L1, a drain of the first common source transistor M1 is connected to a source of a first common gate transistor M2, a drain of the first common gate transistor M2 is connected to one end of a drain load inductor L2, a gate of the first common gate transistor M2 is connected to a power supply VDD, the source of the second common source tube M3 is connected with the other end of the source negative feedback inductor L1, the drain of the second common source tube M3 is connected with the source of the second common gate tube M4, the drain of the second common gate tube M4 is connected with the other end of the drain load inductor L2, the gate of the second common gate tube M4 is connected with the power supply VDD, the center tap grounding end in the middle of the source negative feedback inductor L1, the center tap in the middle of the drain load inductor L2 is connected with the power supply VDD, the two ends of the drain load inductor L2 are connected with the resonant capacitor C2 in parallel, the values of the drain load inductor L2 and the resonant capacitor C2 determine a second resonant frequency, and the second resonant frequency is matched with the first resonant frequency. The inductance negative feedback common source structure low noise amplifier has lower noise coefficient lower limit than a common gate amplifier, the circuit can work at higher frequency by using inductance and capacitance parallel resonance as the load of the amplifier, and simultaneously, the topological structure can still work when the power supply voltage is very low because the direct current voltage drop on the inductance is smaller than the resistance. Good matching at a certain specific frequency can be realized by adjusting the inductance and the capacitance of the input end. The disadvantage of this circuit is that only one band of radio frequency signals can be amplified.
A second structure diagram of a Low Noise Amplifier (LNA) of the prior art is shown in fig. 4, and is different from fig. 3 in that a plurality of resonant capacitors C1, C2 and C3 are connected in parallel to two ends of a secondary coil S12, each resonant capacitor is connected in series with a gate switch, and a plurality of resonant circuits are formed by selecting different resonant capacitors to be combined with the secondary coil S12, so that the Low Noise Amplifier (LNA) is matched with radio frequency signals of a plurality of frequency bands, and thus the circuit structure is suitable for radio frequency signals of a plurality of frequency bands in principle, but actually, for different frequency bands, for example, for processing signals of three frequency bands of 900MHz, 1800MHz and 2400MHz, the capacitance value of the resonant circuit at 900MHz is 7 times of the capacitance value at 2400MHz by using the same secondary coil, and because of parasitic effect of the capacitor, a small-sized switch is required to make the large capacitor have as small influence on the circuit as possible, this means that the switch on-resistance is relatively large, which directly results in a degradation of the noise performance of the circuit. The switch size becomes large if the circuit resonates at 900MHz resulting in the circuit not being able to resonate at 2.4 GHz. In summary, the performance indexes of 3 frequency bands cannot be satisfied simultaneously by using the circuit structure shown in fig. 4.
Disclosure of Invention
The invention aims to solve the problems that the front end of a receiver in the prior art cannot be reconstructed and multi-frequency and multi-mode cannot be realized, and provides a reconfigurable low-power-consumption low-cost front end of the receiver which supports multi-frequency and multi-mode.
In order to solve the technical problem, the following technical scheme is adopted in the application:
a reconfigurable receiver front end with low power consumption and low cost for supporting multi-frequency and multi-mode comprises a multi-frequency band low-noise amplifying circuit; the input end of the multi-band low-noise amplification circuit comprises a primary coil and at least two secondary coils, and the multi-band low-noise amplification circuit is used for correspondingly converting single-ended radio-frequency signals of at least three frequency bands into double-ended differential voltage signals.
Preferably, the multi-band low-noise amplification circuit comprises a control unit, a selection unit, a resonance unit and an amplification unit, wherein the control unit is used for sending a control signal, the selection unit comprises multiple paths of selection channels and is used for conducting different selection channels according to the control signal, the resonance unit comprises at least two secondary coils, each secondary coil and a resonance capacitor form a resonance circuit, and the resonance circuit is used for generating resonance on a radio frequency signal in a specific frequency band; the amplifying unit is used for amplifying and outputting the resonance signal output by the resonance circuit.
Preferably, the resonance unit further comprises a primary coil for receiving a single-ended radio frequency signal of multiple frequency bands, the secondary coil has a control end, and the control unit is connected to the control end of the secondary coil and is used for controlling the secondary coil.
Preferably, the resonant capacitor and the selection channel are connected in series to form a capacitor selection channel, which is used for gating different resonant capacitors at different frequency bands, and two ends of the secondary coil are connected in parallel with at least one of the capacitor selection channels.
Preferably, the amplifying unit includes an amplifying circuit with a cascode structure, two ends of the secondary coil are respectively connected to different common source tubes, and at least two cascode tubes at the same side end of the secondary coil are connected to the same common gate tube.
Preferably, the amplifying unit comprises an amplifying circuit with a cascode structure, and the first common source tube and the first common gate tube, and the second common source tube and the second common gate tube respectively form a first cascode amplifying circuit and a second cascode amplifying circuit; two ends of the first resonant circuit are respectively connected with the grids of the first and second common source tubes of the first and second common source-common gate amplifying circuits, and the source electrodes of the first and second common source tubes are connected with two ends of the source electrode negative feedback inductor; the drains of a first common-gate tube and a second common-gate tube of the first cascode amplifying circuit and the second cascode amplifying circuit are connected with two ends of a drain load inductor and two ends of a capacitor selection channel formed by connecting an output resonance capacitor and the selection channel in series; the source electrode negative feedback inductor and the drain electrode load inductor are provided with center taps, the center taps of the source electrode negative feedback inductor are grounded, and the center taps of the drain electrode load are connected with a power supply end.
Preferably, the amplifying unit further comprises a third common-source tube and a fourth common-gate tube, and the third common-source tube and the first common-gate tube, and the fourth common-source tube and the second common-gate tube respectively form a third cascode amplifying circuit and a fourth cascode amplifying circuit; two ends of the second resonant circuit are respectively connected with the grid electrodes of the third and fourth common-source tubes of the third and fourth common-source amplification circuits, and the source electrodes of the third and fourth common-source tubes are connected with two ends of the source electrode negative feedback inductor; the drains of the first and second common-gate tubes of the third and fourth cascode amplifying circuits are connected with two ends of a capacitor selection channel formed by connecting a drain load inductor, an output resonance capacitor and the selection channel in series; the source electrode negative feedback inductor and the drain electrode load inductor are provided with center taps, the center taps of the source electrode negative feedback inductor are grounded, and the center taps of the drain electrode load inductor are connected with a power supply end.
Preferably, two ends of the drain load inductor are connected in parallel with at least one path of capacitance selection channel.
Preferably, a plurality of resonant frequencies formed by the drain load inductance and the parallel capacitance are matched with the resonant frequencies of the first resonant circuit and the second resonant circuit respectively.
Preferably, the second said resonant circuit has at least two resonant frequencies.
Compared with the prior art, the invention has the beneficial effects that:
the reconfigurable multi-frequency and multi-mode supporting receiver front end adopts a primary coil and a plurality of secondary coils, each secondary coil is controlled by different control signals, a plurality of resonance capacitors are connected in parallel at two ends of each secondary coil, each resonance capacitor is controlled by the control signal, and when different coils work, the resonance capacitors with different sizes are selected to enable the receiver front end to resonate in different frequency bands, so that multi-frequency and multi-mode reconfiguration is realized.
Furthermore, the reconfigurable multi-frequency and multi-mode supporting receiver front end of the invention realizes multi-frequency by a plurality of coils and capacitors, thereby reducing the cost.
Furthermore, the multi-frequency low-noise amplifier adopts a cascode structure, so that the gain of the front end of the receiver is improved.
Furthermore, the transformer structure with multiple secondary coils can eliminate the adverse effect of the capacitance parasitic effect in the resonant circuit on the circuit. Meanwhile, the problem that the same inductor cannot keep a high Q value in a wide frequency band range is solved, and the circuit has good performance on a plurality of frequency bands.
Drawings
Fig. 1 is a schematic diagram of the overall architecture of a wideband receiver;
fig. 2 is a schematic diagram of the overall architecture of a multilink receiver;
FIG. 3 is a schematic diagram of a prior art low noise amplifier circuit configuration;
FIG. 4 is a schematic diagram of a circuit structure of a multi-band low noise amplifier of the prior art;
fig. 5 is a schematic diagram of the overall structure of the receiver of the present invention;
FIG. 6 is a schematic diagram of a transformer structure of the front end of the receiver of the present invention;
FIG. 7 is a schematic diagram of the structure of a multi-band low noise amplifier of the front end of the receiver of the present invention;
FIG. 8 is a schematic diagram of the circuit structure of the multi-band low noise amplifier of the front end of the receiver of the present invention;
FIG. 9 is a schematic diagram of a multi-band low noise amplifier circuit state of the front end of the receiver according to the present invention;
FIG. 10 is a schematic diagram of a multi-band low noise amplifier circuit state of the front end of the receiver according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like reference numerals refer to like parts unless otherwise specified. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
The overall structure diagram of the receiver of the invention is shown in fig. 5, and the receiver comprises a multi-band Low Noise Amplifier (LNA), a buffer circuit, a Mixer circuit (Mixer), a TIA circuit and an LPF circuit, wherein the LNA circuit is used for converting a single-ended radio frequency signal into a high-gain low-noise double-ended differential voltage signal, the buffer circuit is used for converting the differential voltage signal into a differential current signal and outputting the differential current signal in two paths, the Mixer circuit is used for mixing a local oscillator signal with a duty ratio of 25% with the double-ended differential current signal to obtain a current signal with high linearity, the TIA circuit is used for converting the current signal into a voltage signal and amplifying and filtering the voltage signal, and the LPF circuit is used for configuring bandwidth, filtering out-of-band signals and outputting an intermediate frequency signal.
The multi-band low noise amplifier circuit of the present invention, as shown in fig. 6, comprises a control unit 10, a selection unit 30, a resonance unit 20, and an amplification unit 40, wherein the control unit 10 is used for sending out a control signal, the selection unit 30 comprises multiple selection channels for conducting different selection channels according to the control signal, the resonance unit 20 comprises at least two secondary coils, each secondary coil and a resonance capacitor form a resonance circuit, and the resonance circuit is used for generating resonance to a radio frequency signal of a specific frequency band; the amplifying unit 40 is configured to amplify and output the resonance signal output by the resonance circuit.
The resonance unit 20 is connected with the control unit 10, the selection unit 30 and the amplification unit 40, the control unit 10 is simultaneously connected with the selection unit 30, the multi-band radio frequency signal is input to the resonance unit 20, the control unit 10 controls the selection unit 30 to select the corresponding resonance capacitor, the resonance unit 20 is controlled to select the corresponding secondary coil, the selected secondary coil and the resonance capacitor generate resonance on the radio frequency signal of the input frequency band, and the signal of the frequency band is amplified by the amplification unit 40 to output a double-end differential voltage signal.
Fig. 7 shows a transformer structure diagram of the resonance unit 20 of the present invention, which includes a primary winding S1, two secondary windings S2, S3, a control terminal Vb1 in the middle of the secondary winding S2, a control terminal Vb2 in the middle of the secondary winding S3, and control terminals Vb1, Vb2 for receiving control signals from the control unit 10, and determining to select the secondary winding S2 or the secondary winding S3 for resonance according to the control signals.
FIG. 8 shows a circuit structure of the multi-band low noise amplifier of the present invention, which includes a primary winding S1, two secondary windings S2, S3, one end of the primary winding S1 receives RF signals, and the other end is grounded.
The resonant capacitor C2 and the selection switch SW1 are connected in series to form a first capacitor selection channel, the resonant capacitor C3 and the selection switch SW2 are connected in series to form a second capacitor selection channel, the resonant capacitor C4 and the selection switch SW3 are connected in series to form a third capacitor selection channel, the resonant capacitor C5 and the selection switch SW4 are connected in series to form a fourth capacitor selection channel, and the resonant capacitor C6 and the selection switch SW5 are connected in series to form a fifth capacitor selection channel.
The selection unit 30 includes a plurality of selection switches SW1, SW2, SW3, SW4, SW 5.
The control unit 10 controls on or off of the selection switches SW1, SW2, SW3, SW4, SW 5.
The resonance unit 20 comprises a primary winding S1, two secondary windings S2, S3, a first capacitance selection channel connected in parallel with the secondary winding S2, a second and a third capacitance selection channel connected in parallel with the secondary winding S3, a control terminal Vb1 of the secondary winding S2 connected to a control circuit (not shown), a control terminal Vb2 of the secondary winding S3 connected to a control circuit (not shown)
The secondary coil S3, the second capacitance selection channel and the third capacitance selection channel are connected in parallel to form a first resonant circuit, one end of the first resonant circuit is connected with the gate of the first common-source tube M1 of the first cascode amplification circuit, the other end of the first resonant circuit is connected with the gate of the second common-source tube M3 of the second cascode amplification circuit, the source of the first common-source tube M1 and the source of the second common-source tube M3 are connected with two ends of the source degeneration inductor L1, the middle leading-out end of the source degeneration inductor L1 is grounded, the drain of the first common-source tube M1 is connected with the source of the first common-gate tube M2 of the first cascode amplification circuit, the drain of the second common-source tube M3 is connected with the source of the second common-gate tube M4 of the second cascode amplification circuit, the drain of the first common-gate tube M2 and the drain of the second common-gate tube M3 are connected with two ends of the drain of the load inductor L2, the drain is connected with the load inductor L2, the third capacitance selection channel and the, The fifth capacitance selection channels are connected in parallel, and differential voltage signals are led out from two parallel ends of the fifth capacitance selection channels.
The control circuit controls one of the at least two secondary coils to work, and controls the second capacitance selection channel and the third capacitance selection channel to be conducted simultaneously or independently, so that the resonance frequency generated by the secondary coils and the resonance capacitor is matched with the frequency of the input radio frequency signal; and the combination of at least two secondary coils and the resonance capacitor can resonate the radio frequency signals of at least three frequency bands, thereby realizing the matching of the radio frequency signals of multiple frequency bands and multiple modes.
The control circuit controls at least one of the third capacitance selection channel, the fourth capacitance selection channel and the fifth capacitance selection channel to be conducted, so that the resonant frequency generated by the drain load inductor L2 and the resonant capacitor is matched with the frequency generated by the resonant circuit, and further the low-noise amplification of the multi-band radio-frequency signal is realized. Two ends of the secondary coil S2 are connected in parallel with the resonant capacitor C1 to form a second resonant circuit, one end of the second resonant circuit is connected with the grid of a third common-source tube M5 of the third cascode amplifying circuit, the other end of the second resonant circuit is connected with the grid of a fourth common-source tube M6 of the fourth cascode amplifying circuit, the source of the third common-source tube M5 and the source of the fourth common-source tube M6 are connected with two ends of a source negative feedback inductor L1, the middle leading-out end of the source negative feedback inductor L1 is grounded, the drain of the third common-source tube M5 is connected with the source of a first common-gate tube M2 of the first cascode amplifying circuit, the drain of the fourth common-source tube M6 is connected with the source of a second common-gate tube M4 of the second cascode amplifying circuit, the drain of the first common-gate tube M2 and the drain of the second common-gate tube M4 are connected with two ends of a drain load L2, a drain load inductor L2, a third capacitor selection channel, a fifth capacitor selection channel and a fifth capacitor selection channel are connected in parallel, two-end differential voltage signals are led out from two parallel ends of the transformer.
The middle terminals of the grid electrode of the first common-gate tube M2, the grid electrode of the second common-gate tube M4 and the drain load inductor L2 are connected with a power supply end.
The common-source tube at the same side of the at least two secondary coils is connected with the source electrode of the same common-gate tube, so that the number of the common-gate tubes is reduced, and the cost is reduced.
Because the area of the inductor in the integrated circuit is large, the drain load inductor L2 and the source negative feedback inductor L1 in the amplifying circuit are shared by a plurality of resonant circuits, the number of the inductors is reduced, the size of the circuit is reduced, and the cost is reduced.
The operation modes of the multiband low noise amplifier circuit shown in fig. 8 are respectively shown in fig. 9 and 10:
when the circuit needs to work in a first frequency band, such as a 900MHz frequency band, the control circuit controls Vb1 to be a fixed voltage value, Vb2 is grounded, at this time, because the control end of the secondary coil S3 is grounded, the gate of the first common source tube M1 and the gate of the second common source tube M3 connected with the secondary coil S3526 are grounded, the first common source tube M1 and the second common source tube M3 are in an off state, the gate of the third common source tube M5 and the gate of the fourth common source tube M6 connected with two ends of the secondary coil S2 are connected with a fixed voltage value, the third common source tube M5 and the fourth common source tube M6 are in an on state, the second resonant circuit works, correspondingly, the frequency band of the amplifying circuit is matched with the frequency band of the second resonant circuit to increase the output impedance, the fifth capacitive selection channel is connected, and the third capacitive selection channel and the fourth capacitive selection channel are disconnected. The mode of operation is shown in figure 9.
When the circuit needs to work in the second and third frequency bands, such as 1800MHz and 2400MHz, the control circuit controls Vb2 to be a fixed voltage value, Vb1 is grounded, the secondary coil S2 is grounded because the control end is grounded, the gate of the third common source tube M5 and the gate of the fourth common source tube M6 connected to the secondary coil S2 are grounded, the third common source tube M5 and the fourth common source tube M6 are in an off state, the gate of the first common source tube M1 and the gate of the second common source tube M3 connected to the two ends of the secondary coil S3 are connected to a fixed voltage value, and the first common source tube M1 and the second common source tube M3 are in an on state, and at this time, the following two working modes are divided:
in the first mode: the control circuit controls the second capacitor selection channel to be connected, the third capacitor selection channel to be disconnected, the first resonance circuit works in a second frequency band, correspondingly, the frequency band of the amplifying circuit is matched with the second frequency band to increase output impedance, the fourth capacitor selection channel is connected, and the third capacitor selection channel and the fifth capacitor selection channel are disconnected. The mode of operation is shown in figure 10.
In the second mode: the control circuit controls the third capacitor selection channel to be conducted, the second capacitor selection channel to be disconnected, the first resonant circuit works in a third frequency band, correspondingly, the frequency band of the amplifying circuit is matched with the third frequency band so as to increase the output impedance, the third capacitor selection channel is conducted, and the fourth capacitor selection channel and the fifth capacitor selection channel are disconnected.
Furthermore, two or more of the capacitance selection channels can be in a conducting state at the same time.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the invention, and all the properties or uses are considered to be within the scope of the invention.
Claims (7)
1. A reconfigurable receiver front-end supporting multiple frequencies and multiple modes with low power consumption and low cost is characterized in that,
the multi-band low-noise amplifier comprises a multi-band low-noise amplifying circuit; the input end of the multi-band low-noise amplification circuit comprises a primary coil and at least two secondary coils, and the multi-band low-noise amplification circuit is used for correspondingly converting single-ended radio-frequency signals of at least three frequency bands into double-ended differential voltage signals;
the multi-band low-noise amplifying circuit comprises a control unit, a selection unit, a resonance unit and an amplifying unit, wherein the control unit is used for sending a control signal, the selection unit comprises a plurality of selection channels and is used for conducting different selection channels according to the control signal, the resonance unit comprises a primary coil and at least two secondary coils, the primary coil is used for receiving single-ended radio-frequency signals of multiple bands, each secondary coil and a resonance capacitor form a resonance circuit, the resonance circuit is used for generating resonance on the radio-frequency signals of a specific frequency band, the resonance capacitor and the selection channels are connected in series to form a capacitor selection channel and are used for gating different resonance capacitors in different frequency bands, two ends of each secondary coil are connected with at least one capacitor selection channel in parallel, each secondary coil is provided with a control end, and the control unit is connected with the control ends of the secondary coils, for controlling the secondary coil; the amplifying unit is used for amplifying and outputting the resonance signal output by the resonance circuit; the control unit controls one of the at least two secondary coils to work and controls the conduction of the capacitance selection channel, so that the resonant frequency generated by the secondary coils and the resonant capacitor is matched with the frequency of the input radio-frequency signal; and the combination of at least two secondary coils and the resonance capacitor can resonate the radio frequency signals of at least three frequency bands, thereby realizing the matching of the radio frequency signals of multiple frequency bands and multiple modes.
2. The receiver front end according to claim 1, wherein the amplifying unit comprises an amplifying circuit with a cascode structure, two ends of the secondary coils are respectively connected to different common source transistors, and at least two common source transistors at the same side end of the secondary coils are connected to the same common gate transistor.
3. The receiver front end according to claim 2, wherein the amplifying unit comprises an amplifying circuit with a cascode structure, and the first common source tube and the first common gate tube, and the second common source tube and the second common gate tube respectively form a first cascode amplifying circuit and a second cascode amplifying circuit; two ends of the first resonant circuit are respectively connected with the grids of the first and second common source tubes of the first and second common source-common gate amplifying circuits, and the source electrodes of the first and second common source tubes are connected with two ends of the source electrode negative feedback inductor; the drains of a first common-gate tube and a second common-gate tube of the first cascode amplifying circuit and the second cascode amplifying circuit are connected with two ends of a drain load inductor and two ends of a capacitor selection channel formed by connecting an output resonance capacitor and the selection channel in series; the source electrode negative feedback inductor and the drain electrode load inductor are provided with center taps, the center taps of the source electrode negative feedback inductor are grounded, and the center taps of the drain electrode load inductor are connected with a power supply end.
4. The receiver front end according to claim 3, wherein the amplifying unit further comprises a third common-source tube and a fourth common-gate tube, the third common-source tube and the first common-gate tube, the fourth common-source tube and the second common-gate tube respectively constitute a third cascode amplifying circuit and a fourth cascode amplifying circuit; two ends of the second resonant circuit are respectively connected with the gates of the third and fourth common-source tubes of the third and fourth common-source amplification circuits, and the sources of the third and fourth common-source tubes are connected with two ends of a source negative feedback inductor L1; the drains of the first and second common-gate tubes of the third and fourth cascode amplifying circuits are connected with two ends of a drain load inductor and two ends of a capacitor selection channel formed by connecting an output resonance capacitor and the selection channel in series; the source electrode negative feedback inductor and the drain electrode load inductor are provided with center taps, the center taps of the source electrode negative feedback inductor are grounded, and the center taps of the load inductor are connected with a power supply end.
5. The receiver front-end according to claim 3 or 4, characterized in that both ends of the drain load inductance are connected in parallel with at least one capacitance selection channel.
6. The receiver front-end of claim 5, characterized in that a plurality of resonance frequencies formed by the drain load inductance and the parallel capacitance match the resonance frequencies of the first and second resonance circuits, respectively.
7. The receiver front-end of claim 4, characterized in that the second said resonant circuit has at least two resonant frequencies.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810580698.7A CN108809262B (en) | 2018-06-07 | 2018-06-07 | Reconfigurable receiver front end with low power consumption and low cost for supporting multiple frequencies and multiple modes |
| PCT/CN2019/084659 WO2019233217A1 (en) | 2018-06-07 | 2019-04-26 | Reconfigurable, low-power consumption and low-cost receiver front-end supporting multi-band and multi-mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810580698.7A CN108809262B (en) | 2018-06-07 | 2018-06-07 | Reconfigurable receiver front end with low power consumption and low cost for supporting multiple frequencies and multiple modes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108809262A CN108809262A (en) | 2018-11-13 |
| CN108809262B true CN108809262B (en) | 2020-09-22 |
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| CN108809262B (en) * | 2018-06-07 | 2020-09-22 | 清华大学深圳研究生院 | Reconfigurable receiver front end with low power consumption and low cost for supporting multiple frequencies and multiple modes |
| CN112019228B (en) * | 2019-05-30 | 2021-11-23 | 格兰康希通信科技(上海)有限公司 | Multi-mode multi-frequency transceiver circuit |
| CN112671350B (en) * | 2020-12-28 | 2022-01-04 | 北京力通通信有限公司 | Low-noise large-bandwidth amplifier |
| CN112865713B (en) * | 2021-01-22 | 2022-06-07 | 成都市凌巨通科技有限公司 | Multi-frequency band signal amplifier |
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| CN108809262B (en) * | 2018-06-07 | 2020-09-22 | 清华大学深圳研究生院 | Reconfigurable receiver front end with low power consumption and low cost for supporting multiple frequencies and multiple modes |
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| CN108809262A (en) | 2018-11-13 |
| WO2019233217A1 (en) | 2019-12-12 |
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