Mobile signal relay amplifier
An amplifying device and mobile signal technology, applied in the field of mobile communication, can solve the problems of self-excitation phenomenon, low link isolation, complex structure of discrete devices, etc., and achieve the effect of improving link isolation and not easy to self-excite phenomenon.
Active Publication Date: 2021-01-26
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology
[0006] In the existing mobile signal relay amplifier device, the structure of discrete components is complex and does not undergo frequency conversion, the link isolation is not high, self-excitation phenomenon is easy to occur, and the radio frequency performance is not easy to control
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[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0024] The invention provides a mobile signal relay amplifier, such as figure 1 shown, including:
[0025] Connect the first duplexer 101, the first low noise amplifier 102, the first radio frequency transceiver chip 103, the second radio frequency transceiver chip 104, the first power amplifier 105, the second duplexer 201, the second low n...
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The invention provides a mobile signal relay amplifier. The mobile signal relay amplification device includes: in the downlink, the downlink signal of the external base station is initially amplified by the external antenna, the first duplexer, and the first low-noise amplifier, and then sent to the first radio frequency transceiver chip, the second radio frequency transceiver chip, etc. chip, and then perform power amplification through the first power amplifier, and transmit signals through the internal antenna for use by the mobile terminal; in the uplink, the uplink signal of the mobile terminal passes through the internal antenna, the second duplexer, the second low noise amplifier, After being amplified by the third low-noise amplifier, it is sent to the attenuator, the driving amplifier, and further amplified by the second power amplifier, and transmits the signal to the base station through the external antenna; the baseband chip controls the gain mode of the entire working frequency band; the present invention can detect the environment in real time The strength of the signal in the network can dynamically adjust the amplification gain of the link, and at the same time improve the link isolation, so that self-excitation is not easy to occur.
Description
technical field [0001] The invention relates to the technical field of mobile communication, in particular to a mobile signal relay amplifier. Background technique [0002] With the rapid development of mobile communication technology today, how to effectively implement network coverage and reasonably resolve the contradiction between network capacity and network coverage, so as to minimize network investment and maximize benefits, has become a must for mobile communication operators. right question. In economically developed areas, due to the shielding effect of mountains, ground or buildings, places such as subways, tunnels, underground shopping malls, parking lots and closed large buildings become blind areas of network coverage and weak signal areas. Coverage will cause a waste of spectrum resources and network capacity, and base station construction costs are high and infrastructure is complex; in addition, it is not suitable to use base stations for network coverage i...
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IPC IPC(8): H04B7/155
CPCH04B7/15535
Inventor 黄文韬张桥
Owner SPREADTRUM COMM (SHANGHAI) CO LTD