Antenna - Theory .com: The Antenna Site

antenna-theory.com :: View topic - Antenna Array
antenna-theory.com
Antenna Theory

Author Message
Antenna-Theory.com Newbie

Joined: 10 Apr 2014
Posts: 1

 Posted: Thu Apr 10, 2014 9:35 am    Post subject: Antenna Array Do radiation beam using antenna array could make a 360 degree scan?? And can antenna array be used in BS of cellular network to track the mobile user?
Schubert
Antenna Wizard

Joined: 08 Apr 2009
Posts: 161

 Posted: Fri Apr 11, 2014 9:35 pm    Post subject: Yes it is possible to do 360 scan. You can adjust the weights of the antenna array for maximum reception towards any specific angle. This will require a 2-dimensional array though. It is also possible for a base station to track a mobile user. However, base stations tend to have broad beam widths for maximum coverage, so there would need to be a major overhaul to the infrastructure (more antennas, tighter beam width antennas, and a lot more processing).
waleed123
Antenna-Theory.com Newbie

Joined: 11 Oct 2014
Posts: 1

 Posted: Sat Oct 11, 2014 9:28 am    Post subject: here are a few ways depending on what type of antenna it is. If you have a simple half-wavelength dipole antenna, you can assume a resistor of 70 Ohms and some inductance (impedance is about 73 + j43 ohms) depending on the frequency. If you have a complicated antenna, you can measure it on a Vector Network Analyzer (VNA) to get the impedance and then make a simple circuit. Generally you will have some resistance (for radiation resistance + loss resistance) and either some capacitance or inductance in series.
EA1DDO
Antenna-Theory.com Newbie

Joined: 06 Nov 2014
Posts: 6

 Posted: Thu Nov 06, 2014 10:59 am    Post subject: Hi Chandan, Yes, that is called "Smart Antenna" system. There are several ways to implement that. Please have a look at next link: http://robotification.com/2007/06/15/smart-antennas/ http://www.ijser.org/paper/An-Intelligent-Approach-for-Dense-Urban-Area-in-existing-2G-2-5G.html I am not sure if this system is already in use. May be some where, not everywhere. Regards, Maximo
 Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First
 All times are GMT Page 1 of 1

 Jump to: Select a forum The Antenna Forum----------------Questions Related to Antenna TheoryNews
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum