In this tutorial, we are going to demonstrate a project of the UHF Amplifier (Booster). In electronics, an antenna amplifier is a device that enhances an antenna signal, typically into an output with a similar impedance as the input impedance.
Amplifiers amplify everything, both the ideal sign present at the antenna and the noise. A 75-ohm for the coaxial cable and 300 ohms for the twin-lead cable utilize in this circuit. For best outcomes keep all the leads of the parts as short as possible and fit the circuit in a waterproof case and introduce it close to the radio wire. Shield the transistor from different parts.
Hardware Components
The following components are required to make Antenna Amplifier Circuit
| S.No | Components | Value | Qty |
|---|---|---|---|
| 1 | Transistor | 2SC3358 | 1 |
| 2 | Coil | 2 turns, 10 Turns | 2, 2 |
| 3 | Variable Resistor | 5K | 1 |
| 4 | Resistor | 1K, 470Ω, 2.2K | 1, 1, 1 |
| 5 | Capacitor | 0.01µF, 10pF, 10µF | 4, 4, 1 |
| 6 | Battery | 12V | 1 |
2SC3358 Pinout
For a detailed description of pinout, dimension features, and specifications download the datasheet of 2SC3358
Antenna Amplifier Circuit
Circuit Operation
This UHF radio wire amplifier circuit or UHF antenna booster circuit utilize to enhance or lift the signals of the UHF band from 400 MHz to 850 MHz. This circuit is utilizing just a single transistor and gives 15dB amplification. L1 and L2 are equivalent to 2 turns of 0.5mm enameled copper wire wound on 3mm previous, both the loops are air core. L3 and L4 are equivalent to 10uH HF choke or 0.2mm 10 turns on the ferrite core. The current utilization of the circuit is between 5 to 15mA. To control the circuit utilize a choke loop so it will keep the DC voltage from entering the TV.
Applications and Uses
An antenna amplifier supports a radio signal extensively for gadgets that get radio waves. Numerous devices have an RF amplifier stage in their circuitry, that enhances the antenna signal, these incorporate, yet are not restricted to; radios, TVs, cell phones, and Wi-Fi and Bluetooth devices. It amplifies everything.
