Three-purpose radio frequency front-end assembly

Abstract

The utility model discloses a three-purpose radio frequency front-end assembly, which comprises an input channel, a frequency measurement output channel and an intermediate frequency output channel, the frequency measurement output channel comprises a frequency measurement detection output channel and a frequency measurement signal output; the input channel is composed of a connector adapter, an amplitude limiter, an amplifier and a single-pole double-throw radio frequency switch. The tail end of the input channel is connected with the first power divider and then is divided into a frequency measurement output channel and an intermediate frequency output channel. And the frequency measurement output channel is a frequency measurement detection output channel and a frequency measurement signal output channel which are formed by sequentially connecting an amplifier, an attenuator and a second power divider in series and then dividing power into two paths. According to the utility model, the output of each channel is stable, a plurality of radio frequency signals can be processed simultaneously, and the communication efficiency is significantly improved; and meanwhile, the transmission stability and accuracy of the signals in the distribution and redirection processes are ensured, and the problems of signal interference and cross interference are effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of microwave communication, in particular to a three-purpose radio frequency front-end component. Background Art

[0002] RF front-end components have diverse functions, and their working types are very different when facing different working types of receivers. Often during use, superheterodyne receivers, single-bit receivers and amplitude measurement receivers need to be used together, which requires a good balance in the design of RF front-end components.

[0003] Traditional RF front-end components have problems such as complex design and unstable multi-channel signal transmission. Therefore, how to design a high-integration, stable signal transmission, and multi-channel output three-purpose RF front-end component is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The utility model aims to provide a three-purpose radio frequency front-end component with multi-channel output.

[0005] The purpose of the utility model is achieved as follows: a three-purpose radio frequency front-end component, including an input channel, a frequency measurement output channel and an intermediate frequency output channel; the frequency measurement output channel includes a frequency measurement detection output channel and a frequency measurement signal output;

[0006] The input channel is composed of a connector adapter, a limiter, a first amplifier, and a single-pole double-throw radio frequency switch; the input channel end is connected to the first power divider and the power is divided into a frequency measurement output channel and an intermediate frequency output channel;

[0007] The frequency measurement output channel is a second amplifier, a first attenuator, and a second power divider connected in series in sequence, and then the power is divided into two paths to form a frequency measurement detection output channel and a frequency measurement signal output channel; the frequency measurement detection output channel is a second attenuator and a DLVA connected in series; the frequency measurement signal output channel is a third amplifier, a third attenuator, a fourth amplifier, a fourth attenuator, a fifth amplifier, a fifth attenuator, and a filter connected in series;

[0008] The intermediate frequency output channel is composed of a first digitally controlled attenuator, a sixth amplifier, a switching filter, a sixth attenuator, a first mixer, a seventh attenuator, a first intermediate frequency filter, a seventh amplifier, an intermediate frequency filter, an eighth attenuator, a second mixer, a ninth attenuator, a second intermediate frequency filter, an eighth amplifier, a second digitally controlled attenuator, a ninth amplifier, and a third intermediate frequency filter connected in series.

[0009] Preferably, the models of the first mixer and the second mixer are both MM1-1044L, the first mixer is connected to the first local oscillator signal, and the second mixer is connected to the second local oscillator signal.

[0010] Preferably, the models of the first amplifier, the second amplifier, the third amplifier, the fourth amplifier, the fifth amplifier, the sixth amplifier, the seventh amplifier, the eighth amplifier and the ninth amplifier are all ILA-0118C, and the models of the first attenuator, the second attenuator, the third attenuator, the fourth attenuator, the fifth attenuator, the sixth attenuator, the seventh attenuator, the eighth attenuator and the ninth attenuator are all 3590-2.

[0011] Preferably, the single-pole double-throw radio frequency switch is internally connected to two bandpass filters, whose models are IFL-0218 and HGC170-7 respectively.

[0012] Preferably, the first intermediate frequency filter model is HPF-2440, the second intermediate frequency filter model is HPF-2122, and the third intermediate frequency filter model is B-1800M.

[0013] Preferably, the model of the first digitally controlled attenuator and the second digitally controlled attenuator is CNW400200A; the model of the switch filter is HGC667.

[0014] Compared with the prior art, the utility model is beneficial in that:

[0015] 1. Detection branch: Instantaneous detection power range: ≥50dB (including non-linear area under the condition of power error ≤±4dB); Detection power error: ≤±4dB;

[0016] 2. Frequency measurement branch: small signal gain: ≥65dB; in the case of no signal input, within the DC~40GHz frequency band, spurious ≤-50dBm;

[0017] 3. Intermediate frequency channel: instantaneous bandwidth reaches 1GHz; spurious suppression (including harmonics / image frequencies, etc.): ≥40dB; (tested when the output power is 0dBm).

[0018] 4. The three-channel RF front-end component can process multiple RF signals at the same time, significantly improving communication efficiency; at the same time, it ensures the transmission stability and accuracy of the signal during the distribution and redirection process, effectively avoiding signal interference and cross-interference problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the process of the utility model. DETAILED DESCRIPTION

[0020] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0021] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 As shown, a three-purpose radio frequency front-end component includes an input channel, a frequency measurement output channel and an intermediate frequency output channel; the frequency measurement output channel includes a frequency measurement detection output channel and a frequency measurement signal output;

[0024] The input channel is composed of a connector adapter, a limiter, a first amplifier, and a single-pole double-throw RF switch; the input channel end is connected to the first power divider and then the power is divided into a frequency measurement output channel and an intermediate frequency output channel;

[0025] The frequency measurement output channel is a second amplifier, a first attenuator, and a second power divider connected in series in sequence, and then the power is divided into two paths to form a frequency measurement detection output channel and a frequency measurement signal output channel; the frequency measurement detection output channel is a second attenuator and a DLVA connected in series; the frequency measurement signal output channel is a third amplifier, a third attenuator, a fourth amplifier, a fourth attenuator, a fifth amplifier, a fifth attenuator, and a filter connected in series; a filter is added in the channel to suppress stray and harmonic signals to ensure the receiving performance of the component;

[0026] The intermediate frequency output channel is composed of a first digitally controlled attenuator, a sixth amplifier, a switching filter, a sixth attenuator, a first mixer, a seventh attenuator, a first intermediate frequency filter, a seventh amplifier, an intermediate frequency filter, an eighth attenuator, a second mixer, a ninth attenuator, a second intermediate frequency filter, an eighth amplifier, a second digitally controlled attenuator, a ninth amplifier, and a third intermediate frequency filter connected in series.

[0027] The first mixer and the second mixer are both MM1-1044L. The first mixer is connected to the first local oscillator signal, and the second mixer is connected to the second local oscillator signal. The main function of the mixer is to mix the RF signal and the local oscillator signal to obtain the intermediate frequency signal that the receiver can receive. The receiver can reverse the RF signal frequency received by the system through the local oscillator frequency.

[0028] The first amplifier, the second amplifier, the third amplifier, the fourth amplifier, the fifth amplifier, the sixth amplifier, the seventh amplifier, the eighth amplifier, and the ninth amplifier are all ILA-0118C, which use low-noise amplifiers to reduce the noise coefficient of the entire link and ensure the sensitivity and receiving performance of the system; the first attenuator, the second attenuator, the third attenuator, the fourth attenuator, the fifth attenuator, the sixth attenuator, the seventh attenuator, the eighth attenuator, and the ninth attenuator are all 3590-2

[0029] , cascade attenuation chips between amplifiers at each level to reduce standing waves between amplifiers. The SPDT RF switch is internally connected to two bandpass filters, models IFL-0218 and HGC170-7 respectively; the SPDT RF switch is connected to two bandpass filters to form a dual-channel switch filter group, which can control and select the output of RF signals corresponding to two frequency bands, namely the 2-18GHz switch filter branch and the 7-18GHz switch filter branch.

[0030] The first intermediate frequency filter model is HPF-2440, the second intermediate frequency filter model is HPF-2122, and the third intermediate frequency filter model is B-1800M. The amplifier can amplify the signal amplitude so that the system can detect within a suitable power range.

[0031] The models of the first digital controlled attenuator and the second digital controlled attenuator are CNW400200A. By controlling the digital controlled attenuators, the amplitude of the output signal can be precisely controlled. The model of the switching filter is HGC667. The main function of the filter group is to divide the frequency band into several sections. The main function is to suppress the harmonics of the main signal to prevent the system from failing to work normally due to excessive harmonics.

[0032] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A three-purpose radio frequency front-end component, characterized in that: It includes an input channel, a frequency measurement output channel and an intermediate frequency output channel; the frequency measurement output channel includes a frequency measurement detection output channel and a frequency measurement signal output; The input channel is composed of a connector adapter, a limiter, a first amplifier, and a single-pole double-throw radio frequency switch; the input channel end is connected to the first power divider and the power is divided into a frequency measurement output channel and an intermediate frequency output channel; The frequency measurement output channel is a second amplifier, a first attenuator, and a second power divider connected in series in sequence, and then the power is divided into two paths to form a frequency measurement detection output channel and a frequency measurement signal output channel; the frequency measurement detection output channel is a second attenuator and a DLVA connected in series; the frequency measurement signal output channel is a third amplifier, a third attenuator, a fourth amplifier, a fourth attenuator, a fifth amplifier, a fifth attenuator, and a filter connected in series; The intermediate frequency output channel is composed of a first digitally controlled attenuator, a sixth amplifier, a switching filter, a sixth attenuator, a first mixer, a seventh attenuator, a first intermediate frequency filter, a seventh amplifier, an intermediate frequency filter, an eighth attenuator, a second mixer, a ninth attenuator, a second intermediate frequency filter, an eighth amplifier, a second digitally controlled attenuator, a ninth amplifier, and a third intermediate frequency filter connected in series.

2. A three-purpose radio frequency front-end component according to claim 1, characterized in that: The models of the first mixer and the second mixer are both MM1-1044L. The first mixer is connected to a first local oscillator signal, and the second mixer is connected to a second local oscillator signal.

3. A three-purpose RF front-end assembly according to claim 1, characterized in that: The models of the first amplifier, the second amplifier, the third amplifier, the fourth amplifier, the fifth amplifier, the sixth amplifier, the seventh amplifier, the eighth amplifier and the ninth amplifier are all ILA-0118C, and the models of the first attenuator, the second attenuator, the third attenuator, the fourth attenuator, the fifth attenuator, the sixth attenuator, the seventh attenuator, the eighth attenuator and the ninth attenuator are all 3590-2.

4. A three-purpose radio frequency front-end component according to claim 1, characterized in that: The single-pole double-throw radio frequency switch is internally connected to two band-pass filters, whose models are IFL-0218 and HGC170-7 respectively.

5. The three-purpose RF front-end assembly according to claim 1, characterized in that: The model of the first intermediate frequency filter is HPF-2440, the model of the second intermediate frequency filter is HPF-2122, and the model of the third intermediate frequency filter is B-1800M.

6. A three-purpose radio frequency front-end assembly according to claim 1, characterized in that: The models of the first digitally controlled attenuator and the second digitally controlled attenuator are CNW400200A; the model of the switch filter is HGC667.

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