How does a collinear antenna work?
How does a collinear antenna work?
In telecommunications, when two or more dipole antennas are vertically stacked in such a way that their corresponding elements are parallel and collinear with each other, it is called a collinear antenna array. The antennas are linked in such a way that the radiating dipoles sum up all radiation intensities.
What is an advantage of a collinear antenna?
Collinear array The main purpose of this array is to increase the power radiated and to provide high directional beam by avoiding power loss in other directions. Advantages of collinear array antennas include increasing directivity with a reduction in power losses.
How does a coaxial collinear antenna work?
The coaxial colinear (CoCo) antenna, introduced in 1956 by H. A. The antenna has a single simple feed, but the driving voltage is transmitted to the secondary “ports” of the assembly (ports between adjacent segments of the antenna) via cable segments, which are half of a guided wavelength long.
Can I use GSM antenna for LoRa?
868 MHz LoRa antennas are becoming a hot topic in our markets. By wirelessly enabling devices and terminals to operate using LoRa technology, applications can be developed for control and monitoring without the need to use mobile cellular networks such as GSM, 3G or LTE. …
What is pattern multiplication in antenna?
The pattern multiplication principle states that the radiation patterns of an array of N identical antennas is equal to the product of the element pattern Fe( ) (pattern of one of the antennas) and the array pattern Fa( ), where Fa( ) is the pattern obtained upon replacing all of the actual antennas with isotropic …
What is a recognizable feature of a collinear antenna array?
A collinear antenna array is made up of dipole elements. These dipoles are parallel and collinear with each other. This type of antenna has an enhanced gain and directivity in E-plane. Doubling the number of dipole elements, shall double the gain.
Which is better a 6dbi or a longer collinear antenna?
Some quick comparison testing indicates this longer collinear has approximately 2dB more gain than the 6dBi version, with a gain of about 8dBi. Note that lengthening the collinear antenna in this way will reduce the vertical beamwidth of the radiation pattern.
How big is the gain of a collinear antenna?
This page details the construction of an easy-to-make collinear 360 degrees omni-directional, vertically polarised, antenna for 802.11b/g wireless networking. The antenna is very robust and compact, and has a gain of approximately 5-6dBi.
What kind of connector do I need for my collinear antenna?
A panel-mount female N-type connector is also required, to allow the antenna to be connected to a wireless device. Note that other connectors (ie, TNC, SMA, etc) can also be used, depending on the connectors on your pigtails. I used a panel-mount female N-type connector, as shown in the photos below.
How big is a 802.11b radio antenna?
The 802.11b standard uses 2.412GHz to 2.484GHz frequency range, so at the centre of that frequency range, 1/2 wavelength is 61mm, and 3/4 wavelength is 91.5mm. These dimensions appear to be consistent with similar commercial antennas.
