CN203482335U - Outdoor unit for receiving Ku band satellite television signal - Google Patents
Outdoor unit for receiving Ku band satellite television signal Download PDFInfo
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- CN203482335U CN203482335U CN201320605146.XU CN201320605146U CN203482335U CN 203482335 U CN203482335 U CN 203482335U CN 201320605146 U CN201320605146 U CN 201320605146U CN 203482335 U CN203482335 U CN 203482335U
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- circuit
- outdoor unit
- circuit board
- signal
- receiving
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- Expired - Fee Related
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Abstract
The utility model discloses an outdoor unit for receiving a Ku band satellite television signal. The outdoor unit comprises a feed source integrated cavity, a circuit board, a circuit installation cover plate, a probe, an F head female connector, a waterproof plug and a medium phase shifter; the feed source integrated cavity comprises a corrugated horn feed source, a round waveguide, a circuit board installation bit, a connector installation bit and a medium phase shifter installation bit; and the circuit board comprises a low noise amplifier circuit, a filter circuit, a crystal oscillation circuit, an integration lower frequency amplification circuit and a stabilized voltage power supply circuit. After the corrugated horn feed source receives satellite signals, the signals enter the low noise amplifier circuit to be amplified through the phase shift of the medium phase shifter, the transmission of the round waveguide, and the coupling of the probe, the signals are sent to the integration lower frequency amplification circuit to be processed after the filtering of interference signals via the filter circuit, and intermediate frequency signals are finally outputted to the F head female connector. The outdoor unit is advantaged by low power loss, energy saving, environmental protection, high stability of frequency, and great waterproof performance, and the outdoor unit is less affected by structures, materials, assembling and external environment.
Description
Technical field
The utility model relates to a kind of satellite outdoor unit receiving system, is specifically related to a kind of for receiving the outdoor unit of Ku band satellite TV signal.
Background technology
Satellite television outdoor unit, its major function in whole satellite receiving system is the satellite-signal frequency conversion of satellite antenna reception to be enlarged into the intermediate-freuqncy signal of L-band, by coaxial cable, be sent to satellite receiver again, carry out signal demodulation, the decoding of rear end and process.The implementation procedure of frequency changer circuit needs a local reference frequency source, conventionally in satellite outdoor unit medium frequency source, adopts the circuit arrangement of dielectric oscillator DRO.By medium, as resonating device, in wire chamber, produce electromagnetic viscosimeter, thereby produce the required local oscillating frequency of outdoor unit, then carry out the fine setting of frequency by the tuning screw being positioned on medium upper metal chamber.DRO scenario-frame is simple comparatively speaking, and phase noise is low, larger but local oscillator wire chamber takes up room, and the stability of local frequency is subject to the impact that dielectric material, cavity body structure are installed, tuning screw is installed fixation case.The temperature coefficient of dielectric material needs the temperature coefficient of complete match circuit, and the consistency of large batch of production process medium material is difficult to guarantee completely, can causes the skew of local frequency when temperature changes.Simultaneously local frequency is directly affected by cavity body structure, if but in the structural member installation process of product, install not in placely, will make local frequency produce significantly skew.In addition, Ku audio range frequency is high, and the height and position of tuning screw produces minor variations all can cause the skew of local frequency, when external temperature environment changes, can not guarantee that the position of tuning screw is completely fixed completely, must cause the skew of frequency.Outdoor unit for receiving Ku band satellite TV signal, must adapt to various environment and work under wide temperature range, guarantees the stable of local frequency, the reliability of improving product.
Utility model content
The utility model object is exactly in order to make up the defect of prior art, and a kind of direct broadcasting satellite outdoor unit applicable to various complex environments is provided.
The utility model is achieved through the following technical solutions:
A kind of for receiving the outdoor unit of Ku band satellite TV signal, include the integrated cavity of feed (1), it is characterized in that: the integrated cavity of described feed (1) comprises corrugation loudspeaker feed source (8), circular waveguide (9), the end outer face of circular waveguide (9) is provided with circuit board installation position (10), connector installation position (11), and the inside of circular waveguide (9) is provided with dielectric phase shifter installation position (12); In circuit board installation position (10), connector installation position (11), dielectric phase shifter installation position (12), be separately installed with circuit board (2), a F Female Connector (5), dielectric phase shifter (7), the upper probe (4) that inserts of circular waveguide (9), one end vertical transition mode connecting circuit board (2) of probe (4), on circuit board (2), be covered with circuit cover plate (3) is installed, the rear end of F Female Connector (5) is provided with waterproof end plug (6); On described circuit board (2), include the amplifier circuit in low noise (13), filter circuit (14), the integrated frequency reducing amplifying circuit (16) that connect successively, integrated frequency reducing amplifying circuit (16) is connected with crystal oscillating circuit (15), voltage-stabilized power supply circuit (17), and F Female Connector (5) is connected with integrated frequency reducing amplifying circuit (16), voltage-stabilized power supply circuit (17); Described crystal oscillating circuit (15) is connected with integrated frequency reducing amplifying circuit (16), produces local oscillating frequency; Described voltage-stabilized power supply circuit (17) is by F Female Connector (5) input power supply, and output supplies power to integrated frequency reducing amplifying circuit (16); After described corrugation loudspeaker feed source (8) receiving satellite signal, by dielectric phase shifter (7) phase shift, circular waveguide (9) transmission, probe (4), be coupled into amplifier circuit in low noise (13) and amplify, by filter circuit (14) filtering interference signals, send into integrated frequency reducing amplifying circuit (16) again and process, finally export intermediate-freuqncy signal to F Female Connector (5).
Described is a kind of for receiving the outdoor unit of Ku band satellite TV signal, it is characterized in that: described amplifier circuit in low noise adopts two-staged transistor amplifying circuit, use field effect transistor NE3503 or MGF4935, and being on the scene effect tube grid and drain bias place add 1/4 high resistant microstrip line and 1/4 open circuit microstrip line filter out power clutter, at source electrode, by circuit board perforate ground connection, reduce stray inductance.
Described is a kind of for receiving the outdoor unit of Ku band satellite TV signal, it is characterized in that: described crystal oscillating circuit is used 25MHz quartz-crystal resonator, produces the reference signal of fundamental frequency; Described integrated frequency reducing amplifying circuit adopts the QM1L1C0056 chip of SHARP company, and chip internal, with functions such as phase discriminator, loop filters, is realized the function of phase-locked local vibration source, pre-amplification, mixing, intermediate frequency Hyblid Buffer Amplifier, biasing power supply; Described voltage-stabilized power supply circuit adopts the three-terminal regulator block of 3.3V, external filter capacitor filter out power clutter.
The utility model has the advantages that:
The utility model, by the design of circuit, has promoted the stability of amplifying circuit; Local frequency source circuit of the present utility model is used 25MHz quartz crystal as with reference to signal, by integrated frequency reducing amplifying circuit, produce the local oscillating frequency of 10.75GHz, its frequency stability is high, be subject to the impact of structure, material, assembling and external environment condition of product all minimum, promoted the stability of product; The design of waterproof end plug has guaranteed the water resistance of product.The scheme of while three-terminal regulator block and QM1L1C0056, circuit overall power is low, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is structure vertical view of the present utility model.
Fig. 3 is circuit theory diagrams of the present utility model.
Fig. 4 is theory diagram of the present utility model.
Embodiment
As shown in Fig. 1,2,4, a kind of for receiving the outdoor unit of Ku band satellite TV signal, include the integrated cavity 1 of feed, the integrated cavity 1 of feed comprises corrugation loudspeaker feed source 8, circular waveguide 9, the end outer face of circular waveguide 9 is provided with circuit board installation position 10, connector installation position 11, and the inside of circular waveguide 9 is provided with dielectric phase shifter installation position 12; In circuit board installation position 10, connector installation position 11, dielectric phase shifter installation position 12, be separately installed with circuit board 2, a F Female Connector 5, dielectric phase shifter 7, on circular waveguide 9, insert a probe 4, one end vertical transition mode connecting circuit board 2 of probe 4, on circuit board 2, be covered with circuit cover plate 3 is installed, the rear end of F Female Connector 5 is provided with waterproof end plug 6; On described circuit board 2, include the amplifier circuit in low noise 13, filter circuit 14, the integrated frequency reducing amplifying circuit 16 that connect successively, integrated frequency reducing amplifying circuit 16 is connected with crystal oscillating circuit 15, voltage-stabilized power supply circuit 17, and F Female Connector 5 is connected with integrated frequency reducing amplifying circuit 16, voltage-stabilized power supply circuit 17; Described crystal oscillating circuit 15 is connected with integrated frequency reducing amplifying circuit 16, produces local oscillating frequency; Described voltage-stabilized power supply circuit 17 is by the 5 input power supplies of F Female Connector, and output supplies power to integrated frequency reducing amplifying circuit 16; After described corrugation loudspeaker feed source 8 receiving satellite signals, by dielectric phase shifter 7 phase shifts, circular waveguide 9 transmission, probe 4, be coupled into amplifier circuit in low noise 13 and amplify, by filter circuit 14 filtering interference signals, send into integrated frequency reducing amplifying circuit 16 again and process, finally export intermediate-freuqncy signal to F Female Connector 5.
Amplifier circuit in low noise adopts two-staged transistor amplifying circuit, use field effect transistor NE3503 or MGF4935, and being on the scene effect tube grid and drain bias place add 1/4 high resistant microstrip line and 1/4 open circuit microstrip line filter out power clutter, at source electrode, by circuit board perforate ground connection, reduce stray inductance.
Crystal oscillating circuit is used 25MHz quartz-crystal resonator, produces the reference signal of fundamental frequency; Described integrated frequency reducing amplifying circuit adopts the QM1L1C0056 chip of SHARP company, and chip internal, with functions such as phase discriminator, loop filters, is realized the function of phase-locked local vibration source, pre-amplification, mixing, intermediate frequency Hyblid Buffer Amplifier, biasing power supply; Described voltage-stabilized power supply circuit adopts the three-terminal regulator block of 3.3V, external filter capacitor filter out power clutter.
The realization of direct broadcasting satellite outdoor unit circuit as shown in Figure 3, first order low noise amplifier circuit amp1 and amp2 are by capacitor C 1, C2 is connected with second level low noise amplifier circuit amp3, after the low noise amplifier circuit amp3 of the second level, connect filter, through capacitor C 3, be coupled to integrated frequency reducing amplifier T1 again, 1 pin of T1, 7 pin, 12 pin, 18 pin, 19 pin, 21 pin ground connection, 2 pin are connected biasing are provided with amp1 output with 1/4 open circuit microstrip line W2 by 1/4 high resistant microstrip line W1, 3 pin are by resistance R 1, 1/4 high resistant microstrip line W3 is connected biasing is provided with amp1 input with 1/4 open circuit microstrip line W4, 4 pin articulate resistance R 2, 5 pin articulate capacitor C 4, 6 pin are unloaded, 8 pin, 9 pin cross-over connection 25MHz crystal, and respectively articulate capacitor C 5, C6, 10 pin are connected with the output of three-terminal regulator block, 11 pin are connected with capacitor C 7 and export intermediate-freuqncy signal, 13 pin are by resistance R 3, inductance L 1 is connected with circuit output, between resistance R 3 and inductance L 1, be connected into capacitor C 8 ground connection, realize the control function of polarization, 14 pin articulate capacitor C 9 ground connection, 15 pin articulate resistance R 4 ground connection, 16 pin are by resistance R 5, 1/4 high resistant microstrip line W5 is connected biasing is provided with amp3 input with 1/4 open circuit microstrip line W6, 17 pin are connected biasing are provided with amp3 output with 1/4 open circuit microstrip line W8 by 1/4 high resistant microstrip line W7, 20 pin are connected with filter by capacitor C 3, 22 pin articulate resistance R 6, 23 pin are connected biasing are provided with amp2 output with 1/4 open circuit microstrip line W10 by 1/4 high resistant microstrip line W9, 17 pin are by resistance R 7, 1/4 high resistant microstrip line W11 is connected biasing is provided with amp2 input with 1/4 open circuit microstrip line W12, the filtering of C10 to C18 capacity earth, improving stability.
Claims (5)
1. one kind for receiving the outdoor unit of Ku band satellite TV signal, include the integrated cavity of feed (1), it is characterized in that: the integrated cavity of described feed (1) comprises corrugation loudspeaker feed source (8), circular waveguide (9), the end outer face of circular waveguide (9) is provided with circuit board installation position (10), connector installation position (11), and the inside of circular waveguide (9) is provided with dielectric phase shifter installation position (12); In circuit board installation position (10), connector installation position (11), dielectric phase shifter installation position (12), be separately installed with circuit board (2), a F Female Connector (5), dielectric phase shifter (7), the upper probe (4) that inserts of circular waveguide (9), one end vertical transition mode connecting circuit board (2) of probe (4), on circuit board (2), be covered with circuit cover plate (3) is installed, the rear end of F Female Connector (5) is provided with waterproof end plug (6); On described circuit board (2), include the amplifier circuit in low noise (13), filter circuit (14), the integrated frequency reducing amplifying circuit (16) that connect successively, integrated frequency reducing amplifying circuit (16) is connected with crystal oscillating circuit (15), voltage-stabilized power supply circuit (17), and F Female Connector (5) is connected with integrated frequency reducing amplifying circuit (16), voltage-stabilized power supply circuit (17); Described crystal oscillating circuit (15) is connected with integrated frequency reducing amplifying circuit (16), produces local oscillating frequency; Described voltage-stabilized power supply circuit (17) is by F Female Connector (5) input power supply, and output supplies power to integrated frequency reducing amplifying circuit (16); After described corrugation loudspeaker feed source (8) receiving satellite signal, by dielectric phase shifter (7) phase shift, circular waveguide (9) transmission, probe (4), be coupled into amplifier circuit in low noise (13) and amplify, by filter circuit (14) filtering interference signals, send into integrated frequency reducing amplifying circuit (16) again and process, finally export intermediate-freuqncy signal to F Female Connector (5).
2. according to claim 1 a kind of for receiving the outdoor unit of Ku band satellite TV signal, it is characterized in that: described amplifier circuit in low noise adopts two-staged transistor amplifying circuit, use field effect transistor NE3503 or MGF4935, and being on the scene effect tube grid and drain bias place add 1/4 high resistant microstrip line and 1/4 open circuit microstrip line filter out power clutter, at source electrode, pass through circuit board perforate ground connection.
3. according to claim 1 a kind of for receiving the outdoor unit of Ku band satellite TV signal, it is characterized in that: described crystal oscillating circuit is used 25MHz quartz-crystal resonator, produce the reference signal of fundamental frequency.
4. according to claim 1 a kind of for receiving the outdoor unit of Ku band satellite TV signal, it is characterized in that: described integrated frequency reducing amplifying circuit adopts the QM1L1C0056 chip of SHARP company.
5. according to claim 1 a kind of for receiving the outdoor unit of Ku band satellite TV signal, it is characterized in that: described voltage-stabilized power supply circuit adopts the external filter capacitor of three-terminal regulator block of 3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605146.XU CN203482335U (en) | 2013-09-27 | 2013-09-27 | Outdoor unit for receiving Ku band satellite television signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605146.XU CN203482335U (en) | 2013-09-27 | 2013-09-27 | Outdoor unit for receiving Ku band satellite television signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203482335U true CN203482335U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320605146.XU Expired - Fee Related CN203482335U (en) | 2013-09-27 | 2013-09-27 | Outdoor unit for receiving Ku band satellite television signal |
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| Country | Link |
|---|---|
| CN (1) | CN203482335U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393880A (en) * | 2014-12-11 | 2015-03-04 | 安徽波维电子科技有限公司 | K-waveband satellite receiving outdoor unit |
| CN113169433A (en) * | 2018-11-22 | 2021-07-23 | 空中客车一网卫星公司 | Active waveguide transition device and RF signal communication system |
-
2013
- 2013-09-27 CN CN201320605146.XU patent/CN203482335U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393880A (en) * | 2014-12-11 | 2015-03-04 | 安徽波维电子科技有限公司 | K-waveband satellite receiving outdoor unit |
| CN104393880B (en) * | 2014-12-11 | 2017-02-01 | 安徽波维电子科技有限公司 | K-waveband satellite receiving outdoor unit |
| CN113169433A (en) * | 2018-11-22 | 2021-07-23 | 空中客车一网卫星公司 | Active waveguide transition device and RF signal communication system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 |
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| CF01 | Termination of patent right due to non-payment of annual fee |