Dual-frequency coupling low-noise amplification circuit and amplifier
A low-noise amplification, high-frequency amplification technology, applied in amplifiers with semiconductor devices/discharge tubes, amplifiers, improved amplifiers to reduce noise effects, etc., can solve the problem of high circuit noise, reduced practicability, increased circuit cost and complexity To avoid noise, improve practicability, and avoid high loss
Active Publication Date: 2022-07-15
GUANGDONG UNIV OF TECH
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] like figure 1 as shown, figure 1 In order to apply the FET adjustment feedback switch to the schematic diagram of the existing dual-band amplifier, the dual-frequency amplification function is realized by switching the FET adjustment feedback switch, adjusting the input switch matching and the output switch matching, but the disadvantage is the circuit used to adjust the feedback switch A large amount of additional power consumption will be generated, which will cause the overall circuit to be noisy
And each regulator feedback switch requires an additional power supply, which increases circuit cost and complexity
If the adjustment feedback switch is not used, the amplifier circuit will not be able to achieve power amplification in multi-band situations, resulting in reduced practicability
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0047]Existing dual-band amplifiers generally use FET adjustment feedback switches for control. By switching the FET adjustment feedback switches, and adjusting the input switch matching and output switch matching, the dual-frequency amplification function is realized, but the disadvantage is that the circuit used to adjust the feedback switches will generate A lot of extra power dissipation, which will cause the noise of the whole circui...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a dual-frequency coupling low-noise amplification circuit and an amplifier. The dual-frequency coupling low-noise amplification circuit comprises an input frequency dividing circuit, a high-frequency amplification circuit, a low-frequency amplification circuit and an output coupling circuit, the input frequency dividing circuit comprises a first duplexer, a first capacitor and a second capacitor. The output coupling circuit comprises a second duplexer, a third capacitor and a fourth capacitor. Wherein the input frequency dividing circuit is used for separating a received radio frequency signal into a high-frequency signal and a low-frequency signal, inputting the high-frequency signal into the high-frequency amplifying circuit for power amplification, inputting the low-frequency signal into the low-frequency amplifying circuit for power amplification, coupling the high-frequency signal and the low-frequency signal after power amplification through the output coupling circuit, and outputting the coupled signal. According to the invention, the multi-frequency processing of the signal can be realized without using an adjusting feedback switch, and the circuit loss is reduced at the same time.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a dual-frequency coupling low-noise amplifying circuit and an amplifier. Background technique [0002] With the continuous advancement of the construction of the fifth-generation mobile communication network, the millimeter wave band has the advantages of wider spectrum resources and faster transmission speed, which will make more applications of millimeter wave in the field of communication. As the front-end module of the signal receiver, the performance of the low noise amplifier will have a direct impact on the sensitivity and linearity of the entire receiver, and further affect the performance of the entire communication system. Nowadays, a wireless communication device often faces specific requirements or different communication standards, resulting in more and more amplifier circuits required in communication terminal equipment, and traditional single-frequen...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H03F1/26H03F1/56H03F3/193
CPCH03F1/26H03F1/565H03F3/193H03F2200/294H03F2200/451
Inventor 杨鑫磊刘海亮张志浩章国豪
Owner GUANGDONG UNIV OF TECH