CN209897032U

CN209897032U - Multi-band radio frequency receiver

Info

Publication number: CN209897032U
Application number: CN201920838797.0U
Authority: CN
Inventors: 折晓峰
Original assignee: Sichuan Falcon Technology Co Ltd
Current assignee: Sichuan Falcon Technology Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-01-03
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a multiband radio frequency receiver, divide the ware, a plurality of four select one switch, SPDT switch, a plurality of band pass filter BPF, a plurality of low pass filter LFCN, a plurality of high pass filter HFCN880, a plurality of amplifier, a plurality of mixer, a plurality of SAW filter and a plurality of coupler etc. including a plurality of low noise amplifier LNA, a plurality of adjustable gain amplifier, four merit. The utility model discloses can receive communication signal such as GSM, TD-SCDM, WCDMA, CDMA2000, LTE simultaneously, and hardware resources stack realizes, has reduced the volume of product, has reduced the consumption, the cost is reduced.

Description

Multi-band radio frequency receiver

Technical Field

The utility model relates to a radio frequency receiver technical field, more specifically relates to a multiband radio frequency receiver.

Background

Under some design requirements, a special device needs to receive communication signals of GSM, TD-SCDM, WCDMA, CDMA2000, LTE and the like at the same time. The common design can be realized by overlapping parallel hardware resources, and the scheme has great influence on the volume, power consumption and cost of the product.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a multiband radio frequency receiver, can receive communication signal such as GSM, TD-SCDM, WCDMA, CDMA2000, LTE simultaneously, and hardware resources stack realizes, has reduced the volume of product, has reduced the consumption, the cost is reduced.

The purpose of the utility model is realized through the following technical scheme:

a multi-band radio frequency receiver comprises a plurality of Low Noise Amplifiers (LNA), a plurality of adjustable gain amplifiers, a four-way power divider, a plurality of four-to-one switches, a SPDT switch, a plurality of Band Pass Filters (BPF), a plurality of low pass filters (LFCN), a plurality of high pass filters (HFCN 880), a plurality of amplifiers, a plurality of mixers, a plurality of SAW filters and a plurality of couplers;

the output end of a first Low Noise Amplifier (LNA) is connected with the input end of an A1 adjustable gain amplifier, the output end of an A1 adjustable gain amplifier is connected with the input end of a four-power divider, the first output end of the four-power divider is connected with the input end of an A2 adjustable gain amplifier, the output end of the A2 adjustable gain amplifier is connected with the input end of a first one-of-four switch, the first output end of the first one-of-four switch is connected with the input end of an A1 band-pass filter (BPF), the second output end of the first one-of-four switch is connected with the input end of an A2 band-pass filter (BPF), and the third output end of the first one-of-four switch is connected with the input end of an A3 band-pass filter (BPF); the output of the A1 th band-pass filter BPF is connected to the input of the A1 th low-pass filter LFCN, and the output of the A2 th band-pass filter BPF is connected to the input of the A2 th low-pass filter LFCN; the output of the a1 th low-pass filter LFCN is connected to the input of a first high-pass filter HFCN880, and the output of the a2 th low-pass filter LFCN is connected to the input of a second high-pass filter HFCN 880; the output end of the first high-pass filter HFCN880 is connected with the input end of the second one-of-four switch, and the output end of the second high-pass filter HFCN880 is connected with the input end of the second one-of-four switch; the output end of the second four-out-of-one switch is connected with the input end of an A1 amplifier, the output end of an A1 amplifier is connected with the input end of an A1 mixer, the output end of an A1 mixer is connected with the input end of a low-pass filter LFCN225, the output end of the low-pass filter LFCN225 is connected with the input end of an A2 amplifier, the output end of an A2 amplifier is connected with the input end of a first SAW filter, the output end of the first SAW filter is connected with the input end of an A3 amplifier, the output end of an A2 amplifier is connected with the input end of an A3 adjustable gain amplifier, the output end of an A3 adjustable gain amplifier is connected with the input end of a second SAW filter, the output end of the second SAW filter is connected with the input end of an A4 adjustable gain amplifier, the output end of an A4 adjustable gain amplifier is connected with the input end of an A4 adjustable gain amplifier, and the output end of an A4 adjustable gain amplifier is connected with;

the second output end of the fourth power divider is connected with the input end of a B1-th adjustable amplifier, the output end of a B1-th adjustable amplifier is connected with the input end of a B1-th one-out-of-four switch, the first output end of a B1-th one-out-of-four switch is connected with the input end of a B1-th band-pass filter BPF, the second output end of a B1-th one-out-of-four switch is connected with the input end of a B2-th band-pass filter BPF, and the third output end of a B1-th one-out-of-four switch is connected with the input end of a B3-; the output end of the B1 band-pass filter BPF is connected with the first input end of the B2 four-in-one switch, the output end of the B2 band-pass filter BPF is connected with the second input end of the B2 four-in-one switch, and the output end of the B3 band-pass filter BPF is connected with the third input end of the B2 four-in-one switch; the output end of the B2 quaternary switch is connected with the input end of the B1 amplifier, the output end of the B1 amplifier is connected with the input end of the B1 mixer, the output end of the B1 mixer is connected with the input end of the low-pass filter LFCN225, the output end of the low-pass filter LFCN225 is connected with the input end of the B2 amplifier, the output end of the B2 amplifier is connected with the input end of the B1SAW filter, the output end of the B1SAW filter is connected with the input end of the B2 adjustable gain amplifier, the output end of the B2 adjustable gain amplifier is connected with the input end of the B2SAW filter, the output end of the B2SAW filter is connected with the input end of the B3 amplifier, the output end of the B3 amplifier is connected with the input end of the B3 adjustable gain amplifier, and the output end of the B3 adjustable gain amplifier is connected with the input end of the B1 coupler;

a third output end of the four power dividers is connected with a first input end of the SPDT switch, a second input end of the SPDT switch is connected with an output end of the C1 adjustable gain amplifier, and an input end of the C1 adjustable gain amplifier is connected with an output end of the second low noise amplifier LNA; the output end of the SPDT switch is connected with the input end of a C2 adjustable gain amplifier, the first output end of a C2 adjustable gain amplifier is connected with the input end of a first SP6T, the first output end of the first SP6T is connected with the input end of a C1 band-pass filter BPF, the output end of the C1 band-pass filter BPF is connected with the input end of a first LFC2000, and the output end of the first LFC2000 is connected with the input end of a second SP 6T; a second output terminal of the first SP6T is connected to an input terminal of a C2 band pass filter BPF, an output terminal of the C2 band pass filter BPF is connected to an input terminal of a second LFC2000, and an output terminal of the second LFC2000 is connected to a second input terminal of the second SP 6T; a third output terminal of the first SP6T is connected to an input terminal of a C3 band pass filter BPF, an output terminal of the C3 band pass filter BPF is connected to an input terminal of the first LFC1000, and an output terminal of the first LFC1000 is connected to a third input terminal of the second SP 6T; a fourth output terminal of the first SP6T is connected to an input terminal of a C4 band pass filter BPF, an output terminal of the C4 band pass filter BPF is connected to an input terminal of the second LFC1000, and an output terminal of the second LFC1000 is connected to a fourth input terminal of the second SP 6T; a fifth output terminal of the first SP6T is connected to an input terminal of a C5 band pass filter BPF, an output terminal of the C5 band pass filter BPF is connected to an input terminal of the LFC1800, and an output terminal of the LFC1800 is connected to a fifth input terminal of the second SP 6T; a sixth output terminal of the first SP6T is connected to an input terminal of a C6 band pass filter BPF, an output terminal of the C6 band pass filter BPF is connected to an input terminal of a third LFC2000, and an output terminal of the third LFC2000 is connected to a sixth input terminal of the second SP 6T; the output of the second SP6T is connected to the input of the C1 amplifier, the output of the C1 amplifier is connected to the input of the C1 mixer, the output of the C1 mixer is connected to the input of the low-pass filter LFCN225, the output of the low-pass filter LFCN225 is connected to the input of the C2 amplifier, the output of the C2 amplifier is connected to the input of the first SAW filter, the output of the first SAW filter is connected to the input of the C3 adjustable amplifier, the output of the C3 adjustable amplifier is connected to the input of the second SCW filter, the output of the second SCW filter is connected to the input of the C3 amplifier, the output of the C3 amplifier is connected to the input of the C4 adjustable gain amplifier, and the output of the C4 adjustable gain amplifier is connected to the input of the C1 coupler.

Further, the A1 band-pass filter BPF comprises any one of 859-894 BPF series; the A2 band-pass filter BPF comprises any one of 925-960 BPF series; the A3 band-pass filter BPF comprises any one of 859-894 BPF series; the A3 band-pass filter BPF comprises any one of 2555-2655 BPF series.

Furthermore, the B1 band-pass filter BPF comprises any one of 1805-1880 BPF; the B2 band-pass filter BPF comprises any one of 2110-2170 BPF; the B3 band-pass filter BPF comprises any one of 2300-2400 BPF.

Further, the C1 band-pass filter BPF comprises any one of 1805-1880 BPF series; the C2 band-pass filter BPF comprises any one of 1880-1920 BPF series; the C3 band-pass filter BPF comprises any one of 814-849 BPF series; the C4 band-pass filter BPF series comprise any one of 880-915 BPFs; the C5 band-pass filter BPF comprises any one of 1710-1785 BPF series; the C6 band-pass filter BPF comprises any one of 1920-1980 BPF series.

The utility model has the advantages that:

(1) the utility model discloses a can receive communication signal such as GSM, TD-SCDM, WCDMA, CDMA2000, LTE simultaneously, and hardware resources stack realizes, has reduced the volume of product, has reduced the consumption, the cost is reduced. In particular, the method of manufacturing a semiconductor device,

the utility model provides a technical problem is through the design to the receiver, can receive communication signal such as GSM, TD-SCDM, WCDMA, CDMA2000, LTE by timesharing to turn into intermediate frequency signal with the radio frequency signal of each communication. The utility model provides a signal receiver has following advantage:

1. by changing the local oscillation frequency through external control, one receiver can receive communication signals such as GSM, TD-SCDM, WCDMA, CDMA2000, LTE and the like;

2. the receiver supports high-isolation 4 channels for receiving and supports simultaneous reception of communication radio frequency signals of 4 different frequency bands;

3. through the design of the selectable filter, the receiver has high interference suppression among frequencies, and can receive weak and small communication radio frequency signals when the radio frequency signals of other communication frequency bands are stronger;

4. through the design of the selectable filter, the receiving of signals with different bandwidths can be realized;

5. the receiver has a high dynamic range, and can receive strong signals and weak signals in a time-sharing manner;

6. the gain control of the receiver has a manual gain control mode and an automatic gain control mode, and is convenient to use in different receiving scenes;

7. the receiver can flexibly configure the output level in an automatic gain control mode, and is convenient to use in different scenes and connect with different external equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a block diagram of the present invention.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description. Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Before describing the embodiments, some necessary terms need to be explained. For example:

if the terms "first," "second," etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a "first" element discussed below could also be termed a "second" element without departing from the teachings of the present invention. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

The various terms appearing in this application are used for the purpose of describing particular embodiments only and are not intended as limitations on the invention, except where the context clearly dictates otherwise, the singular is intended to include the plural as well.

When the terms "comprises" and/or "comprising" are used in this specification, these terms are intended to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence and/or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

As shown in fig. 1, a multiband rf receiver includes a plurality of Low Noise Amplifiers (LNAs), a plurality of adjustable gain amplifiers (agc's), a four-way power divider (dfb), a plurality of one-out-of-four switches (SPDT's), a plurality of Band Pass Filters (BPFs), a plurality of low pass filters (LFCNs), a plurality of high pass filters (HFCN 880), a plurality of amplifiers, a plurality of mixers, a plurality of SAW filters (SAW filters), and a plurality of couplers;

The utility model discloses can receive communication signal such as GSM, TD-SCDM, WCDMA, CDMA2000, LTE simultaneously, and hardware resources stack realizes, has reduced the volume of product, has reduced the consumption, the cost is reduced.

In other technical features in this embodiment, those skilled in the art can flexibly select the technical features according to actual situations to meet different specific actual requirements. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known components, structures or parts are not described in detail in order to avoid obscuring the present invention, and the technical scope of the present invention is defined by the claims.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are used in a generic sense as is understood by those skilled in the art. For example, the components may be fixedly connected, movably connected, integrally connected, or partially connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected inside two elements, and the like, and for those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations, that is, the expression of the language and the implementation of the actual technology can flexibly correspond, and the expression of the language (including the drawings) of the specification of the present invention does not constitute any single restrictive interpretation of the claims.

Modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, which should be limited only by the claims appended hereto. In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known techniques, such as specific construction details, operating conditions, and other technical conditions, have not been described in detail in order to avoid obscuring the present invention.

Claims

1. A multiband radio frequency receiver is characterized by comprising a plurality of Low Noise Amplifiers (LNA), a plurality of adjustable gain amplifiers, a four-way power divider, a plurality of four-to-one switches, an SPDT switch, a plurality of band-pass filters (BPF), a plurality of low-pass filters (LFCN), a plurality of high-pass filters (HFCN 880), a plurality of amplifiers, a plurality of mixers, a plurality of SAW filters and a plurality of couplers;

the output end of a first Low Noise Amplifier (LNA) is connected with the input end of an A1 adjustable gain amplifier, the output end of an A1 adjustable gain amplifier is connected with the input end of a four-power divider, the first output end of the four-power divider is connected with the input end of an A2 adjustable gain amplifier, the output end of the A2 adjustable gain amplifier is connected with the input end of a first one-of-four switch, the first output end of the first one-of-four switch is connected with the input end of an A1 band-pass filter (BPF), the second output end of the first one-of-four switch is connected with the input end of an A2 band-pass filter (BPF), and the third output end of the first one-of-four switch is connected with the input end of an A3 band-pass filter (BPF); the output of the A1 th band-pass filter BPF is connected to the input of the A1 th low-pass filter LFCN, and the output of the A2 th band-pass filter BPF is connected to the input of the A2 th low-pass filter LFCN; the output of the a1 th low-pass filter LFCN is connected to the input of a first high-pass filter HFCN880, and the output of the a2 th low-pass filter LFCN is connected to the input of a second high-pass filter HFCN 880; the output end of the first high-pass filter HFCN880 is connected with the input end of the second one-of-four switch, and the output end of the second high-pass filter HFCN880 is connected with the input end of the second one-of-four switch; the output end of the second four-out-of-one switch is connected with the input end of an A1 amplifier, the output end of an A1 amplifier is connected with the input end of an A1 mixer, the output end of an A1 mixer is connected with the input end of a low-pass filter LFCN225, the output end of the low-pass filter LFCN225 is connected with the input end of an A2 amplifier, the output end of an A2 amplifier is connected with the input end of a first SAW filter, the output end of the first SAW filter is connected with the input end of an A3 amplifier, the output end of an A2 amplifier is connected with the input end of an A3 adjustable gain amplifier, the output end of an A3 adjustable gain amplifier is connected with the input end of a second SAW filter, the output end of the second SAW filter is connected with the input end of an A4 adjustable gain amplifier, the output end of an A4 adjustable gain amplifier is connected with the input end of an A4 adjustable gain amplifier, and the output end of an A4 adjustable gain amplifier is connected;

2. The multiband radio frequency receiver of claim 1, wherein the A1 band pass filter BPF comprises any one of the 859-894 BPF series; the A2 band-pass filter BPF comprises any one of 925-960 BPF series; the A3 band-pass filter BPF comprises any one of 859-894 BPF series; the A3 band-pass filter BPF comprises any one of 2555-2655 BPF series.

3. The multiband radio frequency receiver according to claim 1, wherein the B1 band pass filter BPF comprises any one of 1805-1880 BPF; the B2 band-pass filter BPF comprises any one of 2110-2170 BPF; the B3 band-pass filter BPF comprises any one of 2300-2400 BPF.

4. The multiband radio frequency receiver according to claim 1, wherein the C1 band pass filter BPF comprises any one of the 1805-1880 BPF series; the C2 band-pass filter BPF comprises any one of 1880-1920 BPF series; the C3 band-pass filter BPF comprises any one of 814-849 BPF series; the C4 band-pass filter BPF series comprise any one of 880-915 BPFs; the C5 band-pass filter BPF comprises any one of 1710-1785 BPF series; the C6 band-pass filter BPF comprises any one of 1920-1980 BPF series.