Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
which steps to be cared on designing the inside antenna of mobile phone? How to measure the peformance for inside antenna , is it the same way as the outside antenna?
Re: which steps to be cared on designing the inside antenna
Today there are four leading antenna architectures that are commonly used in embedded applications (internal to the mobile): microstrip, patch, Planar Inverted 'F' Antenna (PIFA) and Meander Line Antenna (MLA).
For a while I am using PIFA for multi-band mobile system.
PIFAs make good embedded antennas in that they exhibit a somewhat omnidirectional pattern and can be made to radiate in more than one frequency band. The omnidirectional pattern is not as good as a top-placed Helix for example, but is a good compromise.
Is no difference in measuring radiated performances, between internal or external antennas.
These are some Antenna-Designer issues.
From a System-Engineer point of view, internal (embedded) antennas can give more troubles.
Definitely you will get more receiver desens using embedded antenna compare to external.
Radiated harmonics could be higher and also some parameters like phase-error could be affected (VCO interaction). To minimize all of this you have to have a good ground shield between antenna and main board, but this will affect somehow the omnidirectionality
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
