Full formTechnology
EHFstands forExtremely High Frequency
Full Form of EHF
What is EHF?
Extremely High Frequency (EHF) refers to the band of radio frequencies ranging from 30 to 300 GHz, with wavelengths between 1 and 10 millimeters. It is also known as the millimeter wave band. In India, EHF is crucial for advanced communication systems, including satellite communication used by ISRO for high-data-rate links, military radar and secure communications by the Indian defence forces, and emerging 5G and 6G wireless networks. The band allows for wide bandwidth, enabling faster data transfer and higher resolution imaging. However, it has limited range and is susceptible to atmospheric absorption, making it suitable for short-range, point-to-point applications. EHF technology is deployed in Indian space missions, weather monitoring radars, and radio astronomy research at institutions like the Raman Research Institute. Students of electronics and telecommunications engineering often study EHF in courses on microwave engineering and antenna design. Understanding EHF is also relevant for competitive exams like GATE, IES, and ISRO Scientist recruitment, where questions on frequency bands and their applications appear regularly.
EHF का फुल फॉर्म
अत्यधिक उच्च आवृत्ति
Example
The Indian Space Research Organisation utilizes EHF bands for inter-satellite links and deep space communication in its Chandrayaan and Mangalyaan missions.
EHF — frequently asked questions
What is the full form of EHF?
EHF stands for Extremely High Frequency, which is the radio frequency band from 30 to 300 GHz.
How is EHF used in Indian defence?
EHF is used in Indian military for secure, high-bandwidth communication links and millimeter-wave radars for target detection and tracking.
What is the difference between EHF and SHF?
SHF (Super High Frequency) covers 3–30 GHz (centimeter waves), while EHF covers 30–300 GHz (millimeter waves). EHF offers higher bandwidth but shorter range due to atmospheric absorption.