A transmitarray antenna (or just transmitarray) is a phase-shifting surface (PSS), a structure capable of focusing electromagnetic radiation from a source antenna to produce a high-gain beam.
Transmitarrays consist of an array of unit cells placed above a source (feeding) antenna. Phase shifts are applied to the unit cells, between elements on the receive and transmit surfaces, to focus the incident wavefronts from the feeding antenna. These thin surfaces can be used instead of a dielectric lens. Unlike phased arrays, transmitarrays do not require a feed network, so losses can be greatly reduced. Similarly, they have an advantage over reflectarrays in that feed blockage is avoided.It is worth clarifying that transmitarrays can be used in both transmit and receive modes: the waves are transmitted through the structure in either direction. An important parameter in transmitarray design is the
F
/
D
{\displaystyle F/D}
ratio, which determines the aperture efficiency.
F
{\displaystyle F}
is the focal length and
D
{\displaystyle D}
is the diameter of the transmitarray. The projected area of the feeding antenna determines the illumination efficiency of a transmitarray panel. Provided that the insertion loss of each unit cell is minimised, an aperture area appropriate to the feed radiation pattern can efficiently focus the wavefronts from the feed.
guys okay naba ganyan mabilis naman siya nakakapag play ng 1080p at 4k videos.
ask ko lang if kailangan ko pa taasan antenna ko. isang tubo lang kasi nilagay ko.
okay na po ba yung 11 dbi antenna para sa 936?
2G 3G 4G LTE MIMO
Antenna Model : Arrona
Antenna Cable Wire : 15-20m Long
Frequency : 1710-2690 MHz
Gain : 11 dBi
V.S.W.R : < 1.5
mga paps. patulong naman. nalilito kasi ako. yung modem 936 ko kasi kung e set ko sa external antenna ang modem 3-4 bars. pero kapag ilagay ko ang antenna ko sa "built-in", nagfufull bar sya at ang RSSI ko ay bumaba kaysa external antenna. alin po ba ang mas effective mga paps, ang built-in o...
Paano poba malalaman kung ilang DBI itong plano kong bilin na Antenna sabi kasi ng seller 18dbi then may nag sabi sakin 9dbi lang daw ito? Wala pa kasi ako masyadong info about dyan e.
Hello Guys,
Using a 936 ol/fa 936 modem. Would like to increase/improve signal for 3G/4G by using an indoor whip antenna (2pcs). Has anyone used this kind of antenna before? Claim of 5db gain from seller - is that enough to improve the signal?
Apologies kung may same thread na, i did try...
mga paps san po ba dapat nakatapat ang antenna? or may tool po ba para malaman kung magbilis siya sa angle na yon or hindi? thanks po sa mga sasagot :)
Hello guys gusto ko lang humingi ng tulong sa inyo , hindi kse mabilis ung 936 ko so planning ako bumili ng 18dbi do u think it will boost my surfing experience or ano po mgandang antenna na affordable
Also may antenna kame na disconnected na seems na compatible naman sya sa likod ng 936 ko...