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The LC oscillating circuit is a type of electronic circuit that generates high-frequency sine wave signals using a frequency-selective network made up of an inductor (L) and a capacitor (C). Common types of LC oscillators include the transformer feedback LC oscillator, the inductor three-point LC oscillator, and the capacitor three-point LC oscillator. These circuits are widely used in radio and communication systems due to their ability to produce stable, high-frequency signals.
One key characteristic of LC oscillators is that the radiated power is proportional to the fourth power of the oscillation frequency. To achieve sufficient electromagnetic radiation, the circuit must operate at a high frequency and be open, allowing energy to propagate outward as electromagnetic waves.
In an ideal LC circuit, energy is exchanged between the electric field stored in the capacitor and the magnetic field stored in the inductor. This creates a continuous oscillation between the two forms of energy. However, in real-world scenarios, energy losses occur due to resistance in the components, leading to damping of the oscillations. To compensate for these losses, an active component such as a transistor or operational amplifier is typically added to the circuit. This amplifying element provides the necessary gain to sustain the oscillations through feedback mechanisms, resulting in a stable output signal with consistent amplitude and frequency.
The resonant frequency of an LC circuit can be calculated using the formula:
$$ f = \frac{1}{2\pi\sqrt{LC}} $$
Where:
- $ f $ is the frequency in Hertz (Hz),
- $ L $ is the inductance in Henrys (H),
- $ C $ is the capacitance in Farads (F).
Understanding the working principle of an LC oscillating circuit involves analyzing the interplay between electric and magnetic fields. As the capacitor charges and discharges, the current through the inductor changes, causing the magnetic field to vary. This dynamic interaction leads to electromagnetic oscillations within the circuit.
During the charging phase, the capacitor stores maximum electric energy, while the inductor has no magnetic energy. As the capacitor discharges, the magnetic field in the inductor builds up, converting electric energy into magnetic energy. This cycle continues, creating a periodic exchange of energy between the two components.
To analyze the behavior of an LC circuit, it's important to consider the conservation of energy and the relationships between voltage, current, and the fields involved. The circuit’s state at any given time can be determined by observing how these quantities change over time.
In practical applications, LC circuits are often designed with certain assumptions, such as negligible resistance, perfect inductors and capacitors, and no external electromagnetic radiation. While these conditions simplify analysis, real-world circuits require additional components to maintain stability and efficiency.
Overall, LC oscillators play a crucial role in many electronic systems, from radio transmitters to signal generators. Their ability to produce precise and stable high-frequency signals makes them essential in modern communication and control technologies.
Introduction of BTD Image Transmission Module Series
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The BTD image transmission module is the main product line built by Yanuoxun Technology based on the LTE wireless communication standard. Relying on domestic SOC chips and key technologies of DFDM, it has formed the core competitiveness of "high adaptability, strong stability and wide coverage". As an important component of the Wireless Video Transmission Modules family, it is complementary to the BTF Series in technology and covers the communication needs of many industries together.
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The BTD Series supports multi-band transmission such as 800M and 1.4G, with the maximum transmission power reaching 46dBm, ensuring stable signals even in complex environments. Four models in the series accurately match different scenarios:
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BTD4212-DX-25 adapts to fixed monitoring scenes like border patrol with 4W ultra-low power consumption.
BTD4212-N-40, featuring IP65 waterproofing and 150KM star network, is the preferred choice for marine monitoring.
BTD1222-40 supports a high bitrate of 90Mbps, meeting HD transmission demands for power inspection.
BTD2212-PH20-46 suits shelter applications such as forest monitoring with strong signal penetration.
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The hardware design is practical, with a lightweight body and flexible interface for quick installation. Technical advantages include:
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Support for multiple encryption methods (ZUC, AES128) to ensure data security.
A wide operating temperature range (-40℃~+70℃) for extreme climates.
MIMO and carrier aggregation technology to enhance anti-jamming capabilities.
Flexible networking via star and Mesh ad hoc networks, ideal for remote areas without base station coverage.
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At present, BTD series has been applied on a large scale in frontier inspection, maritime monitoring, emergency command and other fields, and has served more than 6,000 industrial terminal devices. With the three technical advantages of "intelligent power management, long battery life and customized scenes", this series of products not only overcome the technical bottleneck of continuous power supply for fixed monitoring equipment, but also provide stable and reliable communication guarantee for mobile operation scenes, and become the core communication component of industrial digital transformation.
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