CN215581156U

CN215581156U - Frequency hopping source with strong anti-interference capability

Info

Publication number: CN215581156U
Application number: CN202121781897.8U
Authority: CN
Inventors: 张国强
Original assignee: Chengdu Tianbo Micro Electric Technology Co ltd
Current assignee: Chengdu Tianbo Micro Electric Technology Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-01-18
Anticipated expiration: 2031-08-02

Abstract

The utility model relates to the technical field of communication equipment, and provides a frequency hopping source with strong anti-jamming capability, which comprises a mounting plate, a PLL (phase locked loop), an LDO (low dropout regulator), an MCU (microprogrammed control unit) and a shielding cover, wherein the bottom of the mounting plate is provided with a plurality of interfaces capable of being connected with external components, the PLL, the LDO and the MCU are all mounted at the top of the mounting plate, and the shielding cover is arranged at the top of the mounting plate and fixedly connected with the mounting plate. The frequency hopping source with strong anti-interference capability provided by the utility model has the advantages of small volume and strong anti-interference capability.

Description

Frequency hopping source with strong anti-interference capability

Technical Field

The utility model relates to the technical field of communication equipment, in particular to a frequency hopping source with strong anti-interference capability.

Background

The frequency hopping source provides broadband, fast frequency conversion and high-stability local oscillation signals for baseband signals or radio frequency signals in various receiving and transmitting links, and is widely applied to the field of wireless communication. With the continuous development of wireless communication technology, increasingly stringent requirements are put forward on the volume, power consumption and anti-interference capability of a frequency hopping source.

The traditional design method is that the frequency hopping source is designed into an independent module and is connected with other modules through a low-frequency connector, a radio-frequency connector and the like, so that the volume of the frequency hopping source is difficult to control; if the frequency hopping source is directly combined with other modules, the interference between the frequency hopping source and other modules is difficult to solve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a frequency hopping source with strong anti-interference capability, so that the frequency hopping source is small in size and strong in anti-interference capability.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a frequency hopping source that interference killing feature is strong, includes mounting panel, PLL, LDO, MCU and shield cover, the bottom of mounting panel has a plurality of interfaces that can be connected with outside components and parts, the PLL the LDO with MCU all installs the top of mounting panel, the PLL with the LDO electricity is connected, MCU with the PLL with the equal electricity of LDO is connected, the shield cover sets up the top of mounting panel, and with mounting panel fixed connection.

Further, the mounting plate is a PCB.

Further, the shield case is made of a metal material.

Further, the overall dimensions are: the length is 17mm, the width is 25mm and the height is 3 mm.

Further, the shield case is welded to the top of the mounting plate.

The utility model has the beneficial effects that: according to the frequency hopping source with strong anti-interference capability, the PLL, the LDO and the MCU are all arranged on the mounting plate and are covered by the shielding cover, so that the frequency hopping source becomes an independent device, the interference of other external components on the frequency hopping source is reduced, and the anti-interference capability is strong. The size of the mounting plate is as follows: the length is 17mm, the width is 25mm, the height is 3mm, and the volume is smaller.

Drawings

FIG. 1 is a functional block diagram of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a bottom structure diagram of the mounting plate.

Reference numerals: 10-mounting plate, 11-interface, 20-PLL, 30-LDO, 40-MCU, 50-shield cover.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In this application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "horizontal," "top," "bottom," "upper," "lower," "inner" and "outer" and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or components must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1-3, the frequency hopping source with high interference rejection capability provided by the present invention includes a mounting board 10, a PLL20 (phase locked loop), an LDO30 (low dropout linear regulator), an MCU40 (micro control unit), and a shielding can 50. The bottom of the mounting board 10 has a plurality of ports 11 to which external components can be connected. The PLL20, LDO30, and MCU40 are all mounted on top of the mounting plate 10. The PLL20 is electrically connected to the LDO30, and the MCU40 is electrically connected to both the PLL20 and the LDO 30. The shielding cover 50 is disposed on top of the mounting plate 10 and is fixedly connected to the mounting plate 10.

According to the utility model, the PLL20, the LDO30 and the MCU40 which are easy to be interfered are all arranged on the mounting plate 10 and are covered by the shielding cover 50, and the design and the use of the frequency hopping source are simplified from a module level to a device level, so that the frequency hopping source becomes an independent device, the interaction of the frequency hopping source and other external components is reduced to reduce the interference of other components on the frequency hopping source, and the anti-interference capability is strong. The dimensions of the mounting plate 10 are: the length is 17mm, the width is 25mm, the height is 3mm, and the volume is smaller. The power consumption of the frequency hopping source is also as low as 0.3W.

The specific manufacturing process comprises the following steps:

1. manufacturing a core board: the PLL20, LDO30, MCU40, etc., which are susceptible to interference, are made on a small mounting board 10, leaving a suitable number of pads on the bottom of the mounting board 10 as interfaces 11 for external communications.

2. Debugging: and debugging all the functional units on the mounting plate 10.

3. Packaging: all components on the carrier board are enclosed by the shielding 50 and the shielding 50 is then fixed to the mounting board 10.

4. And (4) retesting: and ensuring the normal performance and stability of the frequency hopping source after the encapsulation is finished.

In one embodiment, mounting board 10 is a PCB board, thereby facilitating the mounting of PLL20, LDO30, and PLL 20.

In one embodiment, the shield can 50 is made of a metallic material. The metal body contains a large amount of free electrons, and the conductivity is relatively high. Thus, the refracted wave is partially lost and the reflection is increased. It is difficult for the electromagnetic wave to penetrate the metal body, thus achieving the shielding effect. Most of the metal materials are easy to obtain, the cost is low, and the anti-interference capability of the utility model is further enhanced.

In one embodiment, the overall dimensions are: the length is 17mm, the width is 25mm and the height is 3 mm.

In one embodiment, the shielding case 50 is welded to the top of the mounting plate 10, and the fixing connection is simple and effective.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A frequency hopping source with strong anti-interference capability is characterized in that: including mounting panel (10), PLL (20), LDO (30), MCU (40) and shield cover (50), the bottom of mounting panel (10) has a plurality of interfaces (11) that can be connected with external components and parts, PLL (20) LDO (30) with MCU (40) is all installed the top of mounting panel (10), PLL (20) with LDO (30) electricity is connected, MCU (40) with PLL (20) with the equal electricity of LDO (30) is connected, shield cover (50) set up the top of mounting panel (10) and with mounting panel (10) fixed connection.

2. The frequency hopping source of claim 1, wherein: the mounting plate (10) is a PCB.

3. The frequency hopping source of claim 1, wherein: the shield case (50) is made of a metal material.

4. The frequency hopping source of claim 1, wherein: the overall size is as follows: the length is 17mm, the width is 25mm and the height is 3 mm.

5. The frequency hopping source of claim 1, wherein: the shielding case (50) is welded to the top of the mounting plate (10).