Английская Википедия:Choke ring antenna

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Файл:Patent6040805 numbers.svg
Patent diagram of a choke ring antenna[1]

Шаблон:Stack A choke ring antenna is a directional antenna designed for reception of GNSS signals from satellites. It consists of a number of concentric conductive cylinders around a central antenna.

The first choke ring antennas were invented at JPL;[2] since 1989 they have been improved and extended by many companies.Шаблон:Fact

Due to its intricate construction, it is often enclosed in a protective cover or radome when placed outside and exposed to the elements.Шаблон:Fact

Benefits

Choke ring antennas have excellent phase center stability, polarization purity, suppression of radiation below the horizon and multipath rejection.[3] This makes them highly suited for satellite navigation. In a GNSS ground-based receiver, a choke ring antenna can provide millimeter precision measurements for use in surveying and geological measurements.[4]

See also

Notes

Шаблон:Reflist

Шаблон:Antenna Types


Шаблон:Engineering-stub Шаблон:Radio-comm-stub

  1. Шаблон:Cite web – Patent for a Low Profile Ceramic Choke, one specific type of choke ring antenna.
  2. Шаблон:Cite journal
  3. Шаблон:Cite journal
  4. Шаблон:Cite web