Mostrando todo 9 resultados

Convertidor ascendente y descendente de frecuencia

What is RF Downconverters exactly?
RF downconverters are integrated assemblies that convert a high-frequency RF signal to a lower-frequency IF signal. In wireless video transmission transmitter and receiver systems, point-to-point radio communication, y otras aplicaciones, RF downconverters are widely used. A frequency down converter receives an RF signal, which is then mixed with a LO (Oscilador local) signal to produce an output IF (Intermediate Frequency) señal. For example, 2.4G frequency input and conversion to 600Mhz, 1.3G-1.4G RF frequency input conversion to 300Mhz-400Mhz frequency, and lower 1000Mhz.
Convertidor descendente de frecuencia, also named frequency mixer.
Convertidor descendente

Convertidor de bloqueo BDC

Transmisión de vídeo inalámbrica Frecuencia RF Convertidor digital COFDM Frecuencia de transferencia 2,4G a 600 Mhz baja BDC

$199.00
3200-3800Convertidor reductor BDC de MHz a 200-800 MHz COFDM - Cambiador de frecuencia RF

Convertidor de bloqueo BDC

3200-3800Convertidor reductor BDC de MHz a 200-800 MHz COFDM – Cambiador de frecuencia RF

$495.00
COFDM Dual-Channel Frequency Down Converter - Cambiador de frecuencia RF

Convertidor de bloqueo BDC

COFDM Dual-Channel Frequency Down Converter BDC FDC

$350.00
1600-2200 Convertidor reductor de frecuencia de MHz a 200-800 mezclador de megaciclos

Convertidor de bloqueo BDC

1600-2200 Convertidor reductor de frecuencia de MHz a 200-800 Mezclador MHz BDC

$450.00
3200-3800Convertidor reductor BDC de MHz a 200-800 MHz COFDM - Cambiador de frecuencia RF

Convertidor de bloqueo BDC

2.4 a 3-3.5 Convertidor ascendente y descendente de frecuencia RF de GHz

El precio original era: $1,500.00.El precio actual es: $450.00.
Convertidor reductor de frecuencia RF COFDM BDC

Convertidor de bloqueo BDC

COFDM RF Convertidor reductor de frecuencia BDC FDC

El precio original era: $999.00.El precio actual es: $790.00.
Convertidor reductor de frecuencia RF COFDM BDC

Convertidor de bloqueo BDC

Frecuencia 2100-2500Mhz hasta 350-750Mhz COFDM RF Convertidor reductor BDC

El precio original era: $999.00.El precio actual es: $790.00.
200Convertidor de bloque de banda W Ku BUC 1-2G a 10,7-12,7 GHz para enlace ascendente por satélite

Convertidor ascendente y descendente de frecuencia

200Convertidor de bloque de banda W Ku BUC 1-2G a 10,7-12,7 GHz para enlace ascendente por satélite

Convertidor ascendente y descendente de frecuencia COFDM

Convertidor de bloqueo BDC

Convertidor de frecuencia 2,4G a 250Mhz DVB-T COFDM Digital HDTV RF Placa de módulo de microondas

$690.00
An RF (Frecuencia de radio) downconverter is a device or circuit used to convert a high-frequency RF signal to a lower intermediate frequency (IF) or baseband for easier processing. This is a critical component in many communication systems, Radar, and signal processing applications.

Key Components of an RF Downconverter:

  1. RF Input Stage:
    • Receives the incoming high-frequency RF signal.
    • May include filters to select the desired frequency band and reject unwanted signals.
  2. Oscilador local (LO):
    • Generates a stable signal at a specific frequency to mix with the RF signal.
    • The LO frequency is chosen to produce the desired IF signal after mixing.
  3. Mixer:
    • Combines the RF signal with the LO signal.
    • Outputs two frequencies: the sum and difference of the RF and LO frequencies.
    • Típicamente, a filter selects the desired IF frequency (usually the difference frequency).
  4. IF Amplifier:
    • Amplifies the downconverted IF signal for further processing.
    • May also include additional filtering to improve signal quality.
  5. Output Filter:
    • Removes any unwanted harmonics or spurious signals from the mixer output.
    • Ensures a clean IF signal.

aplicaciones:

  • Communications: Used in receivers for mobile phones, satellite communication, and Wi-Fi systems to process signals for demodulation.
  • Radar Systems: Converts high-frequency radar echoes to lower frequencies for easier analysis.
  • Test Equipment: Part of spectrum analyzers or oscilloscopes for RF signal measurement.
  • Radiodifusión: Used in TV and radio receivers for demodulating broadcast signals.

Types of RF Downconverters:

  1. Direct Downconversion:
    • Converts RF directly to baseband without an intermediate frequency.
    • Simpler architecture but may have issues like DC offset and IQ imbalance.
  2. Heterodyne Downconversion:
    • Uses one or more intermediate frequencies.
    • Provides better selectivity and image rejection but is more complex.
  3. Wideband Downconversion:
    • Supports a wide range of RF frequencies.
    • Often used in spectrum monitoring applications.

Design Considerations:

  • Rango de frecuencia: The operational RF and IF frequency ranges.
  • Figura de ruido: Low noise is crucial for high sensitivity in receivers.
  • Linealidad: Essential to minimize distortion and intermodulation products.
  • Rechazo de imagen: Ensures that unwanted mirrored frequencies are suppressed.
  • El consumo de energía: Important for battery-operated devices.
If you're looking to design or use an RF downconverter, details about the specific frequency range and application will help refine the choice of components and topology.