Radio frequency front-end module and wireless device
A radio frequency front-end and radio frequency switch technology, applied in the field of radio frequency, can solve the problems of large loss of radio frequency signal and complex circuit structure, and achieve the effect of reliable transmission, optimal performance, and avoidance of large attenuation
Active Publication Date: 2020-11-17
RADROCK (SHENZHEN) TECH CO LTD
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Problems solved by technology
[0004] The embodiment of the present invention provides a radio frequency front-end module and a wireless device to solve the problems of complex circuit structure and large loss during radio frequency signal transmission in the existing radio frequency front-end circuit
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0028] It should be understood that the invention can be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity, and like reference numer...
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The invention discloses a radio frequency front-end module and a wireless device. A radio frequency front-end circuit comprises a radio frequency switch circuit, a power amplifier, a low noise amplifier and at least two frequency band selection inductors; the first signal end of the radio frequency switch circuit is used for being connected to an antenna, and the second signal end of the radio frequency switch circuit is used for being connected to the output signal end of the low-noise amplifier, the power amplifier is connected to the frequency band selection inductor; and the first end of each frequency band selection inductor is connected to the radio frequency switch circuit, and the second end is connected to the input signal end of the low-noise amplifier. According to the radio frequency front-end circuit, radio frequency signals without signal attenuation can be received by adopting one change-over switch, the number of passing dip switches is reduced, the cost is reduced, theloss of the radio frequency signals passing through the switches can be effectively reduced, and the radio frequency signals output by the low-noise amplifier are prevented from being greatly attenuated, so that the performance of the radio frequency front-end circuit is ensured.
Description
technical field [0001] The invention relates to the field of radio frequency technology, in particular to a radio frequency front-end module and a wireless device. Background technique [0002] An existing radio frequency front-end circuit includes a transmitting path and a receiving path. A power amplifier PA is usually provided on the transmission path to amplify the radio frequency signal transmitted from the baseband module and send it out through the antenna. An attenuation component is usually provided on the receiving path to attenuate the radio frequency signal received from the antenna, and a low noise amplifier is used to amplify the radio frequency signal received from the antenna. In order to ensure that the radio frequency signal in the receiving path can be selectively attenuated or amplified, the receiving path in the existing radio frequency front-end circuit is often equipped with multiple switches to switch between different signal transmission paths. Mor...
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IPC IPC(8): H04B1/40H04B1/401
CPCH04B1/40H04B1/401
Inventor 宋楠倪建兴胡自洁倪楠曹原奉靖皓
Owner RADROCK (SHENZHEN) TECH CO LTD