helical antenna

In most cases, helical antennas are mounted over a ground plane.

The prominent helical antenna was for telecommands from a ground station.

His inventions included the helical antenna, the corner reflector, and several other types of antennas.

The basic idea is that the tag has a helical antenna etched from thin aluminum bonded to a piece of paper.

For comparison, a traditional approach to meet the mission requirements might involve a helical antenna design, or specifically, a quadrifilar helix.

Helical antennas can operate in one of two principal modes: normal mode or axial mode.

A helical antenna is an antenna consisting of a conducting wire wound in the form of a helix.

Certain types of monopole antennas, e.g. some helical antennas, can radiate circularly polarized waves.

Electra UHF-Band transceivers with a single helical antenna; for communication with surface assets (e.g. rovers, landers).

In order to receive HRPT transmissions a high gain antenna is required, such as a small satellite dish, a helical antenna, or a crossed yagi.

Antennas, 1950, 1st edition, published by McGraw-Hill was a monumental work, in which the helical antenna Kraus invented is described in detail (Chapter 7).

Helical waveguides and linear arrays of short conductors are used as part of "end-fire" antennas such as the helical antenna and Yagi antenna.

One application that has used this product in large quantities since the early 1970s is the covering of fibreglass helical antennas, used extensively for 27 MHz CB Radio.

Lunokhod was equipped with a cone-shaped antenna, a highly directional helical antenna, four television cameras, and special extendable devices to test the lunar soil for soil density and mechanical property tests.

There are many ways to make a high-gain antenna - the most common are parabolic antennas, helical antennas, yagi antennas, and phased arrays of smaller antennas of any kind.

Dipole antennas, short antennas, parabolic and other reflector antennas, horn antennas, periscope antennas, helical antennas, spiral antennas, surface-wave and leaky wave antennas.

The product consisted of an array of eight helical antennas which could be mounted on top of a vehicle, and a control box with a circle of LED direction indicators which was typically mounted inside for viewing by the driver or a passenger.

In radio transmission, circular polarisation is often used where the relative orientation of the transmitting and receiving antennas cannot be easily controlled, such as in animal tracking and spacecraft communications, or where the polarisation of the signal may change, so end-fire helical antennas are frequently used for these applications.