CN106450736B - Integrated antenna module and LNB module - Google Patents
Integrated antenna module and LNB module Download PDFInfo
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- CN106450736B CN106450736B CN201611039497.3A CN201611039497A CN106450736B CN 106450736 B CN106450736 B CN 106450736B CN 201611039497 A CN201611039497 A CN 201611039497A CN 106450736 B CN106450736 B CN 106450736B
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- 239000000945 filler Substances 0.000 claims description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
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- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention provides an integrated antenna module, comprising: the antenna comprises a satellite positioning antenna, an antenna feed pin, a patch Printed Circuit Board (PCBA) and a metal shielding cover, wherein the metal shielding cover is positioned between the satellite positioning antenna and the PCBA and is used for covering a circuit on the PCBA, and a through hole or a slot hole for the antenna feed pin to pass through is formed in the metal shielding cover; the antenna feed pin is used for penetrating through a through hole or a slotted hole on the metal shielding cover to complete electric connection between the satellite positioning antenna and the PCBA. The integrated antenna module reduces the size of the PCBA, thereby reducing the sizes of a metal body, a waterproof sealing plastic cover and an outer packing plastic cover in the LNB, and finally reducing the cost of the LNB.
Description
Technical Field
The invention relates to the technical field of satellite televisions, in particular to an integrated antenna module and an LNB module.
Background
There are currently four global positioning satellite systems (GNSS) worldwide: GPS (GlobalPositioningSystem) in the united states, GLONASS (GlobalNavigationSatelliteSystem) in russia, galileo in europe and COMPASS in china. In the aspect of civil navigation, the working frequency of the four large navigation systems is as follows: l1 (1575.42+ -1.023 MHz) of the United states GPS, G1 (1602+ -0.5625 MHz) of Russian GLONASS, E1 (1561.098 + -2.046 MHz) of European Galileo, and B1 (1561.098 + -2.046 MHz) of the second generation of Chinese Beidou. Because the satellites of the systems are distributed on different orbital planes, the satellite of a single navigation system is limited in space distribution for each user, and the accuracy, safety, reliability and usability of the positioning service cannot be guaranteed; the main control party of the satellite system can also pause service or provide error information due to political and military requirements; the future satellite positioning navigation is compatible in multiple modes and multi-system combined positioning, and the satellites of a plurality of navigation systems are complementary and mutually verified, so that the number of visible satellites can be increased, and the positioning precision, reliability and safety are improved. The satellite positioning receiver has obvious advantages particularly under the condition that signals such as urban canyons, deep Mellin and the like are seriously blocked, and the satellite positioning receiver is developed towards multimode compatibility.
With the development of information technology, a direct broadcast satellite television tuner, namely a satellite direct broadcast down converter (LNB) is greatly popularized in rural areas, but as the markets are more and more, black boxes are more and more, even more national bidding boxes are taken to cities for use, impact the markets of local wired digital set-top boxes, and cause confusion to markets and management. Therefore, the broadcast and television headquarter provides the products of the big dipper direct broadcast satellite television tuner, and the final purpose is to provide stable and high-quality products meeting the technical requirements for the broadcast and television household subscribers, and provide satisfactory products and services for the clients.
The antenna is located at the front end of the satellite positioning system, and the main function of the antenna is to receive satellite positioning signals, and the performance of the antenna determines the performance of the satellite positioning system to a certain extent. The current positioning antenna not only meets the requirement of users on the quality of received satellite positioning signals, but also meets the requirement of miniaturization of the positioning terminal. Therefore, the antenna occupies a smaller space volume as much as possible, and simultaneously ensures better antenna performance. At present, under the unified deployment of science and technology companies of the broadcasting and television headquarter (short for broadcasting and television headquarter) of the national news publishing company, the household is ready to adopt a Beidou positioning mode to comprehensively replace GPRS positioning. The frequency band combined by the second generation Beidou and the GPS is combined with the LNB and transmitted through a coaxial cable, and the frequency band is connected into a digital satellite receiver for a user to use. The Beidou frequency point is a main signal, and the GPS frequency point plays a role in detecting and calibrating Beidou in a live broadcast satellite television tuner product.
As shown in fig. 1, a direct broadcast satellite television tuner (LNB) mainly includes: a metal body 1, a sealing waterproof plastic cover 2, a patch printed circuit board (Printed Circuit Board +assembly, PCBA) 3, a metal shielding cover 4, a satellite positioning signal receiving antenna 5, an outer packaging plastic housing 6 and the like. The main functions are as follows: metal body 1: a horn feed source, a wave guide pipe and a metal body for placing PCBA (Printed Circuit Board +assembly); sealing waterproof plastic cover 2: the PCBA (Printed Circuit Board +Assemble) and an antenna for receiving satellite positioning signals are protected from water so as to ensure that the LNB circuit works normally. PCBA3: a circuit for processing direct broadcast satellite television signals and satellite positioning signals; metal shield cover 4: shielding direct broadcast satellite television signals at intervals to enable an LNA (low noise amplifier) circuit to work normally; receiving satellite positioning signal antenna 5: receiving satellite positioning signals from the space, converting the satellite positioning signals into electric signals, and processing the electric signals by an active circuit on the PCBA; outer packing plastic housing 6: the direct broadcast satellite television tuner (LNB) is attractive in appearance and convenient to install on a horn antenna.
As shown in fig. 2, the antenna design and antenna mounting for receiving satellite positioning signals in the prior art design results in the PCBA requiring additional antenna area 8 to house the antenna for receiving satellite positioning signals. The antenna for receiving satellite positioning signals is typically mounted in an integrated design with PCBA 3. When the antenna 5 for receiving the satellite positioning signals is designed, the PCBA3 is taken as a reference plane, the antenna 5 for receiving the satellite positioning signals and the PCBA3 are integrally designed, and the feed connection point of the antenna is welded on the PCBA 3. The metal shielding cover 4 shields the circuitry 7 for processing direct broadcast satellite television signals from the space. Finally, as shown in fig. 1, the whole PCBA is placed on a metal body, the metal shielding cover tightly covers the circuit 7 for processing direct broadcast satellite television signals and is locked on the metal body, and the antenna for receiving satellite positioning signals is exposed outside the metal shielding cover. At this time, it is obvious that the disadvantage of the live broadcast satellite television tuner (LNB) in the prior art is that an additional antenna area 8 is required to be added to place an antenna for receiving satellite positioning signals, so that PCBA is increased, accordingly, both the metal body and the plastic housing are increased according to the increase in size of PCBA, and finally, the size of the live broadcast satellite television tuner (LNB) is increased, thereby increasing the cost.
Disclosure of Invention
Aiming at the problems of oversized product size and high manufacturing cost caused by the existing antenna design, the invention provides an integrated antenna design, which can reduce the size of PCBA, the size of a metal body of LNB and the size of a plastic shell, and realize the underlayment and miniaturization of the LNB.
The invention provides an integrated antenna module, comprising: the antenna comprises a satellite positioning antenna, an antenna feed pin, a patch Printed Circuit Board (PCBA) and a metal shielding cover, wherein the metal shielding cover is positioned between the satellite positioning antenna and the PCBA and is used for covering a circuit on the PCBA, and a through hole or a slot hole for the antenna feed pin to pass through is formed in the metal shielding cover; the antenna feed pin is used for penetrating through a through hole or a slotted hole on the metal shielding cover to complete electric connection between the satellite positioning antenna and the PCBA.
Preferably, an antenna feed point is arranged on the surface of the satellite positioning antenna, a bonding pad is arranged on the PCBA panel opposite to the antenna feed point, one end of the antenna feed pin is electrically connected with the antenna feed point, and the other end of the antenna feed pin is electrically connected with the bonding pad.
Preferably, the antenna feed point is welded with the antenna feed pin into a whole, the head of the antenna feed pin is provided with a telescopic thimble, and the antenna feed pin passes through a through hole or a slotted hole on the metal shielding cover and is propped against the bonding pad; or the antenna feed pin and the bonding pad are welded into a whole, the head of the antenna feed pin is provided with a telescopic thimble, and the antenna feed pin penetrates through a through hole or a slotted hole on the metal shielding cover and is propped against the antenna feed point.
Preferably, the antenna feed pin and the antenna feed point are welded into a whole, a pin holder is welded on the welding pad, and the antenna feed pin passes through a through hole or a slot hole on the metal shielding cover and is inserted on the pin holder; or the antenna feed pin and the bonding pad are welded into a whole, a pin seat is welded on the antenna feed point, and the antenna feed pin passes through a through hole or a slot hole on the metal shielding cover and is inserted on the pin seat.
Preferably, the antenna feed pin is integrally welded with the antenna feed point, the bonding pad is a through hole, the antenna feed pin passes through the through hole on the metal shielding cover and the bonding pad, and the antenna feed pin is welded on the bonding pad.
Preferably, the antenna feed pin is fixed on the through hole on the metal shielding cover, telescopic thimble is arranged at two ends of the antenna feed pin, one end of the telescopic thimble at two ends of the antenna feed pin is propped against the antenna feed point, and the other end is propped against the bonding pad.
Preferably, the antenna feed pin is fixed on the through hole of the metal shielding cover, the pin holder is welded on the bonding pad, the pin holder is welded on the antenna feed point, one end of the antenna feed pin is inserted on the pin holder of the bonding pad, and the other end of the antenna feed pin is inserted on the pin holder on the antenna feed point.
Preferably, the antenna feed pin is integrally welded with the antenna feed point, the antenna feed pin is provided with a spring piece structure, and the spring piece structure penetrates through a through hole or a slot hole on the metal shielding cover and is propped against a bonding pad of the PCBA; or the antenna feed pin and the bonding pad are welded into a whole, the antenna feed pin is provided with a spring piece structure, and the spring piece structure penetrates through a through hole or a slot hole on the metal shielding cover and is propped against the antenna feed point.
Preferably, the satellite positioning antenna comprises: ceramic antennas, PIFA antennas, spiral antennas.
Preferably, when the satellite positioning antenna is a PIFA antenna, a plastic filler is disposed between the antenna radiation sheet of the PIFA antenna and the metal shielding cover.
Preferably, the antenna feed leg of the PIFA antenna includes a shorting loop path and an antenna support leg.
Correspondingly, the invention further provides an LNB module comprising the integrated antenna module.
Preferably, the LNB module includes: the antenna comprises a metal body and a sealing waterproof plastic cover, wherein the integrated antenna module is fixed on the metal body, and the sealing waterproof plastic cover is covered on the integrated antenna module.
Preferably, when the satellite positioning antenna is a PIFA antenna, an antenna radiating fin of the PIFA antenna is fixed on an inner top plane of the sealed waterproof plastic cover.
Compared with the prior art, the integrated antenna module reduces the size of the PCBA, so that the sizes of a metal body, a waterproof sealing plastic cover and an outer packaging plastic cover in the LNB are reduced correspondingly, and the cost of the LNB is reduced finally.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the structure of an LNB module of a tuner of a conventional direct broadcast satellite television;
fig. 2 is a schematic diagram of a prior art LNB module antenna mounting structure;
fig. 3 is a schematic structural diagram of a first embodiment of an integrated ceramic antenna module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second embodiment of an integrated ceramic antenna module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a third embodiment of an integrated ceramic antenna module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a fourth embodiment of an integrated ceramic antenna module in an embodiment of the invention;
fig. 7 is a schematic structural diagram of a fifth embodiment of an integrated ceramic antenna module in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a first embodiment of an integrated PIFA antenna module in an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a second embodiment of an integrated PIFA antenna module in an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a third embodiment of an integrated PIFA antenna module in an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a fourth embodiment of an integrated PIFA antenna module in an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a fifth embodiment of an integrated PIFA antenna module in an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a sixth embodiment of an integrated PIFA antenna module in an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a seventh embodiment of an integrated PIFA antenna module in an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a seventh embodiment of an integrated PIFA antenna module in an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention relates to an LNB module, comprising: the antenna comprises a satellite positioning antenna, an antenna feed pin and a patch printed circuit board PCBA, wherein the satellite positioning antenna is provided with an antenna feed point, and a bonding pad is arranged on the PCBA panel opposite to the antenna feed point; the antenna feed pin is connected with the antenna feed point in a detachable connection mode, or the antenna feed pin is connected with the antenna feed point and the bonding pad in a detachable connection mode; and after the antenna feed point, the antenna feed pin and the bonding pad are connected, a signal path is formed. The antenna feed pin, the antenna feed point, and the bond pad do not form a signal path before the antenna feed point, the antenna feed pin, and the bond pad are connected. In practice, the antenna feed pin, antenna feed point and bond pad may be devoid of signal paths or may be provided with signal paths before the LNB module is securely mounted. The satellite positioning antenna according to the embodiment of the invention comprises: ceramic antennas, PIFA antennas, helical antennas, etc. The LNB module adopts a movable connection mode (namely a detachable connection mode) to connect the satellite positioning antenna on the panel of the PCBA, thereby facilitating the installation of the whole LNB module and realizing the maintenance and replacement of the subsequent satellite positioning antenna.
An integrated antenna module according to an embodiment of the present invention includes: the antenna comprises a satellite positioning antenna, an antenna feed pin, a patch Printed Circuit Board (PCBA) and a metal shielding cover, wherein the metal shielding cover is positioned between the satellite positioning antenna and the PCBA and is used for covering a circuit on the PCBA, and a through hole or a slot hole for the antenna feed pin to pass through is formed in the metal shielding cover; the antenna feed pin is used for penetrating through the through hole or the slotted hole on the metal shielding cover to complete the electric connection between the satellite positioning antenna and the PCBA. The satellite positioning antenna according to the embodiment of the invention comprises: ceramic antennas, PIFA antennas, helical antennas, etc. The integrated antenna module is applied to the LNB module, and can effectively reduce the volume of the LNB module. The antenna feed pin, antenna feed point and bond pad may or may not have signal paths formed prior to fastening of the integrated antenna module.
The integrated antenna module according to the present invention includes: the antenna comprises a satellite positioning antenna, antenna feed pins, a patch Printed Circuit Board (PCBA) and a metal shielding cover, wherein the surface of the satellite positioning antenna is provided with an antenna feed point, a bonding pad is arranged on the PCBA panel opposite to the antenna feed point, the metal shielding cover is positioned between the satellite positioning antenna and the PCBA and is used for covering a circuit on the PCBA, and a through hole or a slotted hole for the antenna feed pins to pass through is formed in the metal shielding cover; in the fastening process of the integrated antenna module, the antenna feed pin passes through the through hole or the slotted hole on the metal shielding cover, one end of the antenna feed pin contacts the antenna feed point, the other end contacts the bonding pad, and a signal passage can be formed through fastening installation. The satellite positioning antenna according to the embodiment of the invention comprises: ceramic antennas, PIFA antennas, helical antennas, etc. The integrated antenna module is applied to the LNB module, can effectively reduce the volume of the LNB module, and is convenient to install.
The present invention will be further described with reference to fig. 3 to 15 with reference to the accompanying drawings, based on the movable connection relationship between the satellite positioning antenna and the PCBA, and the integrated antenna module structure.
Fig. 3 shows a schematic structural diagram of an integrated ceramic antenna according to an embodiment of the present invention, where the integrated ceramic antenna includes: ceramic antenna, metal shield cover 36, PCBA38 and antenna feed pin 34, wherein: the ceramic antenna includes: the ceramic chip 33, the surface silver layer 32 of the ceramic antenna, the antenna feed point 31, the metal shield cover 36 is provided with a through hole 35, and the PCBA38 is provided with a bonding pad 37. The ceramic antenna is closely attached to the upper surface of the metal shield cover 35, and an integrated ceramic antenna using the metal shield cover 35 as a reference ground is formed. The metal shield cover below the antenna feed point 31 of the ceramic antenna is provided with a through hole 35 so that the antenna feed pin 34 of the antenna passes through the through hole 35 to be finally connected with the PCBA. The ceramic antenna is ensured to convert the satellite positioning electromagnetic wave signals in space into current and be connected to the PCBA. In the antenna design, the antenna frequency is adjusted by adjusting the shape and thickness of the surface silver layer 32 of the ceramic antenna and the position of the antenna feed point 31. In order to ensure that the resonance is basically consistent in the XY direction, thereby achieving the effect of uniformly collecting the star, the ceramic plate is of square design, the side length of the ceramic plate is (8-40) mm, the larger the area of the ceramic plate is, the larger the dielectric constant is, the higher the resonance frequency is, and the better the receiving effect is. The side length of the ceramic sheet 33 in the present invention is preferably (12 to 30) mm.
As shown in fig. 4, the left side is a cross-sectional structure diagram of an integrated ceramic antenna, the right side is a structure diagram of a relationship between an antenna feed pin and each point contact, and the integrated ceramic antenna structure includes: ceramic chip 43, ceramic antenna's surface silver level 42, antenna feed point 41, through-hole 45, metal shield cover 46, PCBA47, antenna feed pin 44 and pad 48. The ceramic antenna is connected to the PCBA in this embodiment by means of a lower thimble. The bonding pad 48 for connecting the antenna is reserved on the PCBA48, when the metal shielding cover 4 is tightly pressed against the PCBA47 and is locked on the LNB metal body by screws, the antenna feeding point 41 and the antenna feeding pin 44 of the ceramic antenna are welded together, the antenna feeding pin 44 passes through the through hole 45 of the metal shielding cover and tightly abuts against the bonding pad 48 reserved on the PCBA47, so that the received satellite positioning signal is connected to the PCBA47 through the antenna feeding point 41 and the antenna feeding pin 44 and enters the active circuit processing. To ensure good connectivity and ease of manufacturing and installation, the antenna feed leg 44 of the present invention is preferably formed as a spring-loaded retractable thimble. The antenna feed pin 44 is longer than the distance from the surface of the PCBA47 to the antenna in the natural state, and when the metal shielding cover 46 is tightly locked by compression, the antenna feed pin 44 tightly abuts against the bonding pad 48 of the PCBA48, so that good connectivity between the antenna and the PCBA is ensured. This reduces the difficulty of antenna installation and will reduce the cost of the LNB even further.
As shown in fig. 5, the integral ceramic antenna is connected to the PCBA by means of an upper thimble. The feed point 51 of the ceramic antenna is made as a facet. When the metal shielding cover is tightly pressed against the PCBA and is locked on the LNB metal body by screws, the thimble on the antenna feeding pin 54 passes through the metal shielding cover and tightly pushes against the feeding point 51 of the ceramic antenna, so that the received satellite positioning signal is connected to the PCBA through the thimble and enters an active circuit for processing. In order to ensure good connectivity and ease of production and installation, the thimble involved in the antenna feed leg 54 of the present invention is a retractable thimble with a spring. The antenna feed pin 54 is longer than the distance from the PCBA surface to the antenna in the natural state, and when the metal shielding cover is tightly locked by compression, the antenna feed pin 54 tightly pushes against the antenna feed point 51, so that good connectivity between the antenna and the PCBA is ensured. This approach also reduces the difficulty of antenna installation and reduces the cost of the LNB.
As shown in fig. 6, the left is a cross-sectional structure diagram of an integrated ceramic antenna, the right is a structure diagram of a relationship between an antenna feed pin and each point, the integrated ceramic antenna connects the ceramic antenna to a PCBA by a pin method, and the integrated ceramic antenna structure includes: ceramic chip 63, surface silver layer 62 of ceramic antenna, antenna feed point 61, through hole 65, metal shield cover 66, PCBA68, antenna feed pin 64 and bonding pad 67. The socket stand 69 is welded on the PCBA68, when the metal shielding cover 66 is tightly pressed against the PCBA68 and is locked on the LNB metal body by screws, the antenna feed pin 64 of the ceramic antenna passes through the through hole 65 of the metal shielding cover 66 and is tightly inserted into the slot of the socket stand 69, so that the received satellite positioning signal is connected to the PCBA through the antenna feed pin and enters the active circuit processing. The method reduces the production difficulty of the antenna, also reduces the difficulty of antenna installation and reduces the cost of the LNB.
It should be noted that, the manner of the pin holder may be also fixed at the antenna feeding point, and the antenna feeding pin is soldered on the soldering pad of the PCBA, and the implementation process is similar to that in fig. 6, and will not be repeated here.
As shown in fig. 7, the cross-sectional structure diagram of an integrated ceramic antenna, which connects the ceramic antenna to a PCBA by a pin method, includes: ceramic plate 73, surface silver layer 72 of ceramic antenna, antenna feed point 71, through hole 75, metal shielding cover 76, PCBA78, antenna feed pin 74, bonding pad 77, wherein bonding pad 77 is a through hole before fastening. The present embodiment uses soldering to connect the ceramic antenna to the PCBA78. When the LNB is assembled, the antenna feed pin 74 of the ceramic antenna is inserted through the through hole 75 in the metal shielding cover 76 and is inserted into the bonding pad 77 of the PCBA78, i.e. one through hole 77, and the PCB is pressed to ensure that the PCBA77 is in good contact with the metal shielding cover 76, and the antenna feed pin 74 of the ceramic antenna is soldered from the back of the PCBA78, so that the feed pin 74 of the ceramic antenna is reliably connected with the through hole 77 of the PCBA78, and the received satellite positioning signal is connected to the PCBA78 through the antenna feed pin 74, and enters active circuit processing. This way a reliable connection of the ceramic antenna to the PCBA is ensured.
It should be noted that, to the integration ceramic antenna module, the antenna feed foot can also be fixed on the through-hole on the metal shielding lid, can be provided with scalable thimble with antenna feed foot both ends, in integration ceramic antenna fastening process, the scalable thimble one end at this antenna feed foot both ends pushes up at ceramic antenna's antenna feed point, and the other end pushes up on PCBA's pad, and this kind of mounting means is also more convenient, has also ensured ceramic antenna and PCBA reliable connection.
It should be noted that, for the integrated ceramic antenna module, the antenna feed pin can be fixed on the through hole of the metal shielding cover, a pin holder is welded on the bonding pad of the PCBA, a pin holder is welded on the antenna feed point, one end of the antenna feed pin is inserted on the pin holder of the bonding pad, and the other end is inserted on the pin holder of the antenna feed point in the fastening process of the integrated antenna module, so that the installation mode is convenient, and the reliable connection of the ceramic antenna and the PCBA is also ensured.
The ceramic antenna is taken as an example, and the PIFA antenna is mounted on the PCBA.
As shown in fig. 8, the integrated PIFA antenna structure is schematically shown, and the integrated PIFA antenna structure includes: PIFA antenna, metallic shield cover 87, PCBA89, wherein: the PIFA antenna comprises: the antenna radiation piece 81, the antenna support leg contact point 82, the antenna feed point 84, the short circuit loop path 84, and the like, the metal shield cover 87 is provided with a through hole 83, and the pcb a89 is provided with pads including the antenna support leg contact point 86, the short circuit loop ground point 85, and the like. The antenna support leg between the antenna support leg contact point 82 and the antenna support leg contact point 86 is for supporting and securing the PIFA antenna to the antenna, making the connection to the PCBA more stable and resistant to deformation. The antenna support leg has no electrical properties when connected to the PCBA. The PIFA antenna of the present invention may also have no supporting leg or a plurality of supporting legs depending on the shape and size of the radiating patch of the antenna. The position of the supporting feet is adjusted according to the frequency point of the PIFA antenna. As shown in fig. 8, a through hole 83 is formed in a metal shielding cover 87, so that an antenna feed pin and a short circuit loop grounding pin 85 of a short circuit loop path on a PIFA antenna and an antenna supporting pin pass through the through hole 83 and are finally welded on a feed pin hole, a short circuit loop grounding pin and a supporting pin hole of a PCBA, and a received satellite positioning signal is connected to the PCBA through the antenna feed pin and enters an active circuit for processing. It should be noted that these bonds are typically through backside bonds, and the bonding pads may be provided as a through hole to facilitate backside bonding.
As shown in the integrated PIFA antenna structure schematic diagram of fig. 9, for the structural design of the PIFA antenna, the design method has the advantage of saving PCBA space more and making PCBA size smaller. As shown in fig. 9, the integrated PIFA antenna includes: antenna radiating patch 91, metallic shield cover 97, PCBA99, antenna feed point 95, shorting ring path 98, etc. The metal shielding cover 97 is designed into an open slot 93, so that the feed leg and the short circuit loop grounding leg 95 of the PIFA antenna and the antenna supporting leg 96 are exposed at the outer edge of the metal shielding cover 97 and are finally connected with the PCBA. The design has the advantage of being more convenient when welding the feed pin and the short-circuit ring grounding pin 19 and the supporting pin 20 of the PIFA antenna, and being more convenient when assembling the metal shielding cover 97. It should be noted that these bonds are typically through backside bonds, and the bonding pads may be provided as a through hole to facilitate backside bonding.
As shown in the schematic structural diagram of an integrated PIFA antenna shown in fig. 10, a generally related PIFA antenna includes an antenna radiating patch, a shorting ring path, and an antenna supporting leg that is a supporting leg of a vibrator on an LNB module and is supported by the antenna radiating patch, where the shorting ring path is connected with a satellite positioning receiving circuit on the LNB module. The short-circuit loop path comprises an antenna feeder feeding point and an antenna short-circuit loop grounding point, wherein the antenna feeder feeding point is electrically connected with a satellite positioning receiving circuit on the LNB module, the antenna short-circuit loop grounding point is electrically connected with a satellite positioning receiving circuit on the LNB module, and an antenna short-circuit loop is further arranged between the antenna feeder feeding point and the antenna short-circuit loop grounding point. The relationship between the PIFA antenna, the metal shield cover, the PCBA, etc. shown in fig. 10 can be seen in fig. 8 and 9, and only the connection of the antenna feed pin by means of a pin socket is disclosed herein, the short circuit loop path 101 and the antenna support pin 102, etc. involved in the antenna feed pin are connected to the PCBA by welding the pin socket, and when the metal shield cover is tightly pressed against the PCBA and screwed onto the LNB metal body, the antenna feed pin of the PIFA antenna will pass through the through hole or slot of the metal shield cover, i.e. the short circuit loop path 101 is tightly inserted into the slot of the pin socket 104 and the antenna support pin 102 is tightly inserted into the pin socket 105, thereby connecting the received satellite positioning signal to the PCBA through the antenna feed pin, into the active circuit processing. The method reduces the production difficulty of the antenna, also reduces the installation difficulty of the antenna and reduces the cost of the LNB
It should be noted that the pin holder may also be disposed on the PIFA antenna panel, so that in the process of fastening components, the antenna feed pin is inserted into the PIFA antenna panel, so that the received satellite positioning signal is connected to the PCBA through the antenna feed pin, and enters into the active circuit for processing. Corresponding pin bases can be arranged for different antenna supporting feet, and if the antenna supporting feet are not needed in practice, the corresponding pin bases are not needed for the antenna supporting feet.
As shown in the schematic structure of the integrated PIFA antenna shown in fig. 11, the relationship between the PIFA antenna, the metal shielding cover, the PCBA and the like shown in fig. 11 can be referred to in fig. 8 and 9, only that the antenna feed pin is connected by means of a telescopic thimble, in this embodiment, the PIFA antenna is connected to the PCBA by means of a lower thimble, the short-circuit loop path 111 and the antenna support pin 112 involved in the antenna feed pin, and the like, when the metal shielding cover is pressed against the PCBA and is locked to the LNB metal body by means of screws, the antenna feed pin of the PIFA antenna passes through the through hole or slot of the metal shielding cover, i.e. the short-circuit loop path 111 is pushed against the bonding pad 113 and the antenna support pin 112 is pushed against the bonding pad 114, so that the PCBA receives satellite positioning signals, which are connected to the PCBA, and enter the active circuit processing. In order to ensure good connectivity and ease of production and installation, the antenna feed leg of the PIFA antenna is preferably made as a retractable thimble with a spring. The antenna feed pin is longer than the distance from the surface of the PCBA to the antenna in the natural state, and when the metal shielding cover 46 is tightly locked by pressing, the antenna feed pin tightly props against the bonding pad of the PCBA, so that good connectivity of the antenna and the PCBA is ensured. This reduces the difficulty of antenna installation and will reduce the cost of the LNB even further.
In the specific implementation process, the PIFA antenna can be connected to the PCBA by adopting an upper thimble mode, the thimble structure is shown in fig. 12, the antenna radiating piece of the PIFA antenna is provided with a contact point 11, the PCBA is welded with a telescopic thimble, and the PCBA is welded with a telescopic thimble mode, so that the antenna feed pin contacts the PIFA antenna panel in the fastening component process, and received satellite positioning signals are connected to the PCBA through the antenna feed pin and enter an active circuit for processing. Corresponding thimble vertexes can be arranged for different antenna supporting legs, and if the antenna supporting legs are not needed in practice, the corresponding thimble vertexes do not need to be arranged for the antenna supporting legs. In the specific implementation process, the thimble is welded on the PCBA, and the thimble is provided with a telescopic thimble with a spring or a shrapnel and is longer than the distance from the PCBA to the antenna radiation piece in a natural state. The feed pin and the short circuit ring grounding pin of the PIFA antenna are good contact points on the antenna radiation sheet, and when the metal shielding cover is locked and the sealing waterproof plastic cover integrated with the antenna radiation sheet is covered, the thimble is tightly propped against the contact points of the feed pin and the short circuit ring grounding pin. The design scheme simplifies the installation process, becomes more convenient and quick, and ensures the reliability.
As shown in fig. 13, an integrated PIFA antenna structure schematic diagram is provided with a plastic filler between an antenna radiation piece and a metal shielding cover of the PIFA antenna, and the integrated PIFA antenna structure schematic diagram specifically includes: PIFA antenna 121, metal shielding cover 122, PCBA124, etc., there is plastic filler 123 between the antenna radiation piece of PIFA antenna 121 and metal shielding cover 122, and plastic filler 21 is added between antenna radiation piece 122 and metal shielding cover 4, which can increase the bandwidth of the antenna, making the antenna performance more excellent. Further optimizing, plastic filler 123 is fixed on metal shielding lid 122 surface, and simultaneously PIFA antenna's antenna radiation piece also hugs closely fixed plastic filler 123 for metal shielding lid 122, plastic filler 123 and antenna radiation piece integration, the benefit of this design mode is convenient when installing, and PIFA antenna has supported and has become more firm.
It should be noted that the plastic filler in fig. 13 may be applied to any mode where the PIFA is combined with the metal shielding cover, and only the PIFA antenna and the metal shielding cover need to have a corresponding space therebetween to accommodate the plastic filler.
The LNB module according to the embodiment of the invention comprises an integrated antenna module, a metal body, a sealing waterproof plastic cover, an outer packaging plastic cover and the like, wherein the integrated antenna module is fixed on the metal body, the sealing waterproof plastic cover covers the integrated antenna module, and the metal body, the integrated antenna module and the sealing waterproof plastic cover form parts, and the parts can be covered by the outer packaging plastic cover. As can be seen from a comparison of fig. 1 and fig. 2, the integrated antenna module adopted by the LNB module can reduce the area of the region 8 shown in fig. 2, so that the LNB module is smaller.
An integrated PIFA antenna module as shown in fig. 14, comprising: PIFA antenna 144, sealed waterproof plastic cover 143, metal shield cover 142, and PCBA141. The final PCBA of the LNB module needs to be waterproof and the PIFA antenna needs to be guaranteed to receive satellite positioning signals. It is common to cover a waterproof plastic cover and spot glue is used for a waterproof sealing treatment. The antenna radiating fin 18 of the PIFA antenna according to the present invention is fixed on the inner top plane of the sealing waterproof plastic cover 2, and the antenna radiating fin 18 and the sealing waterproof plastic cover 2 are integrated. The feeding leg and the shorting ring grounding leg 146 of the lead-out antenna will be parallel to the plane of the metal shield cover when the waterproof plastic cover 143 covers the metal shield cover 142 and the PCBA141, i.e. the flat cover is on the LNB metal body, forming a PIFA antenna. And adjusting the distance and the placement position of the short circuit pin and the feed pin to adjust the impedance of the antenna. The feed leg and shorting ring ground leg of the PIFA antenna pass through the through hole 145 in the metal shield cover and are ultimately connected to the PCBA141.
Similarly, as shown in fig. 15, the metal shielding cover may be provided with an open slot, so that the feed leg and the short-circuit loop grounding leg of the PIFA antenna and the supporting leg are exposed at the outer edge of the metal shielding cover and finally connected with the PCBA. The design mode has the advantages that the feed pin, the short circuit ring grounding pin and the supporting pin of the PIFA antenna are welded more conveniently, and the metal shielding cover is assembled more conveniently.
It should be noted that, to the integration PIFA antenna module, the antenna feed foot can also be fixed on the through-hole on the metal shielding lid, can be provided with scalable thimble with antenna feed foot both ends, in integration ceramic antenna fastening process, the scalable thimble one end at this antenna feed foot both ends pushes up at ceramic antenna's antenna feed point, and the other end pushes up on PCBA's pad, and this kind of mounting means is also more convenient, has also ensured ceramic antenna and PCBA reliable connection.
It should be noted that, for the integrated PIFA antenna module, the antenna feed pin can be fixed on the through hole of the metal shielding cover, a pin holder is welded on the bonding pad of the PCBA, a pin holder is welded on the antenna feed point, in the fastening process of the integrated antenna module, one end of the antenna feed pin is inserted on the pin holder of the bonding pad, and the other end is inserted on the pin holder on the antenna feed point, so that the installation mode is also more convenient, and the reliable connection between the ceramic antenna and the PCBA is also ensured.
It should be noted that, for the integrated antenna module, the antenna feed pin and the antenna feed point are welded into a whole, the antenna feed pin has a leaf spring structure, and the leaf spring structure passes through a through hole or a slot hole on the metal shielding cover and is propped against a bonding pad of the PCBA; or the antenna feed pin and the bonding pad are welded into a whole, and the antenna feed pin is provided with a spring piece structure which penetrates through a through hole or a slot hole on the metal shielding cover and is propped against the antenna feed point. The spring piece structure is better suitable for the antenna feed pin of the PIFA antenna.
In summary, the integrated antenna module reduces the size of the PCBA, thereby reducing the sizes of the metal body, the waterproof sealing plastic cover and the outer packaging plastic cover in the LNB, and finally reducing the cost of the LNB.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program to instruct related hardware, the program may be stored in a computer readable storage medium, and the storage medium may include: read Only Memory (ROM), random access Memory (RAM, random Access Memory), magnetic or optical disk, and the like.
The integrated antenna module and the LNB module provided by the embodiments of the present invention are described in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present invention, and the description of the above embodiments is only for helping to understand the method and the core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. An LNB module comprising an integrated antenna module, the integrated antenna module comprising: the antenna is characterized in that the metal shielding cover is positioned between the satellite positioning antenna and the PCBA and is used for covering a circuit on the PCBA, and a through hole or a slotted hole for the antenna feed pin to pass through is formed in the metal shielding cover; the antenna feed pin is used for penetrating through a through hole or a slotted hole on the metal shielding cover to complete the electric connection between the satellite positioning antenna and the PCBA;
the surface of the satellite positioning antenna is provided with an antenna feed point, the PCBA panel is provided with a bonding pad opposite to the antenna feed point, one end of the antenna feed pin is electrically connected with the antenna feed point, and the other end is electrically connected with the bonding pad;
the integrated antenna module is an integrated ceramic antenna, or the integrated antenna module is an integrated PIFA antenna, or the integrated antenna module is an integrated spiral antenna;
the integrated ceramic antenna adjusts the antenna frequency by adjusting the surface silver layer surface shape and thickness of the ceramic antenna and the antenna feed point position;
the LNB module includes: the integrated antenna module is fixed on the metal body, the sealing waterproof plastic cover covers the integrated antenna module, and the metal body, the integrated antenna module and the sealing waterproof plastic cover are covered by the outer packaging plastic shell.
2. The LNB module of claim 1 wherein the antenna feed point is welded to the antenna feed leg, the antenna feed leg head has a retractable thimble, and the antenna feed leg passes through a through hole or slot in the metal shield cover and abuts the pad; or the antenna feed pin and the bonding pad are welded into a whole, the head of the antenna feed pin is provided with a telescopic thimble, and the antenna feed pin penetrates through a through hole or a slotted hole on the metal shielding cover and is propped against the antenna feed point.
3. The LNB module of claim 1 wherein the antenna feed pin is integrally spot welded with the antenna feed pin, a socket is welded on the pad, and the antenna feed pin passes through a through hole or a slot hole on the metal shield cover and is inserted on the socket; or the antenna feed pin and the bonding pad are welded into a whole, a pin seat is welded on the antenna feed point, and the antenna feed pin passes through a through hole or a slot hole on the metal shielding cover and is inserted on the pin seat.
4. The LNB module of claim 1 wherein the antenna feed leg is integral with the antenna feed point and the bonding pad is a through hole, the antenna feed leg passing through the through hole in the metal shield cover and the bonding pad, the antenna feed leg being bonded to the bonding pad.
5. The LNB module of claim 1 wherein the antenna feed leg is secured to a through hole in the metal shield cover, retractable pins are provided at both ends of the antenna feed leg, one end of the retractable pins at both ends of the antenna feed leg is pushed against the antenna feed point, and the other end is pushed against the bonding pad.
6. The LNB module of claim 1 wherein the antenna feed pin is fixed to the through hole of the metal shield cover, a socket is welded to the pad, a socket is welded to the antenna feed point, one end of the antenna feed pin is inserted into the socket of the pad, and the other end is inserted into the socket of the antenna feed point.
7. The LNB module of claim 1 wherein the antenna feed leg is integrally spot welded with the antenna feed leg, the antenna feed leg having a leaf spring structure that passes through a through hole or slot in the metallic shield cover and bears against a land of the PCBA; or the antenna feed pin and the bonding pad are welded into a whole, the antenna feed pin is provided with a spring piece structure, and the spring piece structure penetrates through a through hole or a slot hole on the metal shielding cover and is propped against the antenna feed point.
8. The LNB module of claim 1 wherein when the satellite positioning antenna is a PIFA antenna, a plastic filler is disposed between an antenna radiating patch of the PIFA antenna and the metal shield cover.
9. The LNB module of claim 8 wherein the antenna feed leg of the PIFA antenna comprises a shorting loop path and an antenna support leg.
10. The LNB module of claim 1 wherein when the satellite positioning antenna is a PIFA antenna, the antenna radiating patch of the PIFA antenna is secured to the inner top plane of the sealed waterproof plastic cover.
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| CN201621259444.8U Active CN206412465U (en) | 2016-09-14 | 2016-11-10 | A kind of integral antenna module and LNB modules |
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| CN107800399B (en) * | 2017-10-23 | 2021-05-25 | 郑州云海信息技术有限公司 | Anti-interference crystal oscillator mounting structure and mounting method |
| TWI666821B (en) * | 2017-11-17 | 2019-07-21 | 緯創資通股份有限公司 | Antenna base for fixing an antenna body on a casing, antenna structure having the antenna base, and electronic device having the antenna structure |
| CN109039356B (en) * | 2018-07-06 | 2019-11-19 | 维沃移动通信有限公司 | A kind of radio-frequency communication module, mobile terminal and preparation method |
| CN109326879B (en) * | 2018-10-30 | 2021-02-05 | 深圳Tcl新技术有限公司 | Signal transmission device and television |
| CN109412681B (en) * | 2018-12-17 | 2023-12-22 | 南京天际易达通信技术有限公司 | Portable station all-in-one of enhancement mode satellite communication |
| CN111864369A (en) * | 2020-08-04 | 2020-10-30 | 上海深迅通信技术有限公司 | Satellite positioning GPS and Beidou ceramic passive antenna |
| US20230307839A1 (en) * | 2020-09-15 | 2023-09-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Base Station |
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| CN200944430Y (en) * | 2006-08-29 | 2007-09-05 | 中兴通讯股份有限公司 | Handset built-in antenna |
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| CN200944430Y (en) * | 2006-08-29 | 2007-09-05 | 中兴通讯股份有限公司 | Handset built-in antenna |
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Effective date of registration: 20180129 Address after: 510000 Guangdong province Guangzhou economic and Technological Development Zone Science City color frequency Road No. 11 A701 Applicant after: TECHTOTOP MICROELECTRONICS Co.,Ltd. Address before: 510633 Guangdong city of Guangzhou province Luogang District New Street No. 1 6A1607 Applicant before: Li Yanru |
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Denomination of invention: An integrated antenna module and LNB module Granted publication date: 20230808 Pledgee: China Co. truction Bank Corp Guangzhou Tianhe subbranch Pledgor: TECHTOTOP MICROELECTRONICS Co.,Ltd. Registration number: Y2024980005780 |
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