radio antenna

Thân thiện

A small radio antenna is mounted on the roof of a suburban house.

Definition

Noun: A device, typically a rod, wire, or set of wires, designed to transmit or receive radio waves. It is the component of a radio system that converts electrical signals into radio waves for transmission, or captures radio waves and converts them into electrical signals for reception.

Usage

The term "radio antenna" refers specifically to the physical apparatus used for radio frequency communication. It is a core component in devices like radios, televisions, cell phones, and wireless routers. - It is often used in technical, engineering, and everyday contexts related to broadcasting, communication, and signal reception. - It can be described by its characteristics: directional, omnidirectional, internal, external.

Examples

• Noun:
  • We need to adjust the car's radio antenna to get a clearer signal.
  • The old television had a tall, telescoping radio antenna on its roof.
  • Modern smartphones have internal radio antennas for cellular and Wi-Fi signals.

Advanced Usage

• "to erect a radio antenna": to install or set up an antenna structure.
  • They had to get a permit to erect a large radio antenna for the new station.
• "antenna gain": a technical measure of an antenna's directionality and effectiveness.
  • A high-gain radio antenna can pick up distant stations more clearly.

Variants and Related Words

• Antenna (n): A more general term for the sensory appendage on insects and crustaceans, or a shorter, common form for "radio antenna."
  • The insect's antenna sensed vibrations.
  • The antenna on the router is broken.
• Aerial (n): A synonym for "radio antenna," more common in British English.
  • The TV aerial was damaged in the storm.
• Transmitter (n): A device that generates and sends out radio waves, often using an antenna.
• Receiver (n): A device that processes signals captured by an antenna.

Synonyms

• Aerial (chiefly British English)
• Transceiver (when the device both transmits and receives)

Related Phrases

• Antenna array (n): A group of multiple antennas working together as a single unit to direct signals.
  • The military base uses a sophisticated antenna array for long-range communication.
• Dish antenna (n): A parabolic reflector antenna, often used for satellite communication.
  • The satellite dish antenna on the roof receives hundreds of channels.

Học thuật

Noun

1. omnidirectional antenna comprising the part of a radio receiver by means of which radio signals are received

Từ đồng nghĩa

• radio aerial