Low noise amplifier and radio frequency terminal

A low-noise amplifier and low-noise amplification technology, applied in the field of RF terminal design, to achieve the effect of high flexibility and good matching requirements

Inactive Publication Date: 2017-11-21
SEMICON MFG INT (SHANGHAI) CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is how to adjust the output impedance of the low noise amplifier to adapt to the input impedance of the test equipment

Method used

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  • Low noise amplifier and radio frequency terminal
  • Low noise amplifier and radio frequency terminal
  • Low noise amplifier and radio frequency terminal

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Embodiment Construction

[0028] As mentioned in the background section, the problem faced in the prior art is that the output impedance of the low noise amplifier does not match the input impedance of the test equipment, resulting in inaccurate testing of radio frequency parameters of the low noise amplifier.

[0029] The embodiment of the present invention provides an on-chip testable low noise amplifier with an output impedance adjustment unit to meet the input impedance requirements of the test equipment, so that the test equipment can test the radio frequency parameters of the low noise amplifier more accurately.

[0030] In order to make the above objects, features and beneficial effects of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] image 3 It is the overall circuit block diagram of the low noise amplifier of the embodiment of the present invention.

[0032] Su...

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Abstract

The invention discloses a low noise amplifier and a radio frequency terminal. The low noise amplifier comprises a low noise amplification unit and an output impedance adjustment unit, wherein the first input end of the output impedance adjustment unit is coupled with the output end of the low noise amplification unit, the second input end of the output impedance adjustment unit receives adjustment voltage, the output end of the output impedance adjustment unit is directly or indirectly coupled with the output end of the low noise amplifier, and the output impedance adjustment unit is applicable to changing output impedance of the low noise amplifier under the control of the adjustment voltage. According to the scheme of the low noise amplifier and the radio frequency terminal provided by the invention, the output impedance of the low noise amplifier can be adjusted, and thus the low noise amplifier can well meet the matching requirement of test equipment for testing the low noise amplifier.

Description

technical field [0001] The invention relates to the field of radio frequency terminal design, in particular to a low noise amplifier and a radio frequency terminal. Background technique [0002] RF transceivers are widely used in vehicle monitoring, remote control, telemetry, small wireless networks, wireless meter reading, access control systems, community paging, industrial data acquisition systems, wireless tags, small wireless data terminals, safety and fire prevention systems, wireless remote control systems, In many fields such as biological signal acquisition, hydrometeorological monitoring, data communication, digital audio and digital image transmission. In the radio frequency terminal taking the radio frequency transceiver as an example, the low noise amplifier is generally the first-level circuit in the terminal equipment, and its function is to amplify the radio frequency signal under the premise of generating as low noise as possible to reduce the noise impact ...

Claims

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Application Information

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IPC IPC(8): H03F1/26H03F1/56H03F3/193H03F3/24
CPCH03F1/26H03F1/56H03F3/193H03F3/24H03F2200/294
Inventor 朱红卫南永龙
Owner SEMICON MFG INT (SHANGHAI) CORP
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