Band Width

Bandwidth. Indicates the range of frequencies (in Hertz) you need a signal for transmission.This term describes data-carrying capacity--in other words, how much (and how fast) data flows on a given transmission path. It can apply to network connections, system buses, or any "pipe" through which data pours.

A projector's bandwidth must be high enough to display a signal without smearing or softening the image.  The higher the resolution you want to display, the higher the bandwidth you require in order to properly resolve the information displayed. Wireless projector normally require 802.11g(54M) and above band-width with good wireless signal, otherwise, the video of screen would not be smooth.

For example for a projector to line double standard NTSC signals (480i at 15.75khz horizontal) from DVD, VCR or cable/Satellite to 480p, requires 31.5 Khz of horizontal scan rate and enough bandwidth to handle twice the picture information. HDTV at 1080i requires a horizontal rate of 33.75 Khz and 50 Mhz bandwidth.  720p requires a horizontal rate of 45 Khz with 50 Mhz bandwidth.