First to an antenna there is no such thing as television, only radio and the old TV antennas were designed to pick up Radio signals in the VHF Low, VHF HIGH and UHF bands. I can look up the frequency range if you like but it starts at 56 MHZ and goes up to the 1.x GHZ range.
When the world went all digital (Well the country) that frequency range DID NOT CHANGE. thus to the antenna, nothing at all changed (Ok, VHF low is not much used any more,, but where I'm parked I use VHF-HIGH (Old channel 7) and UHF (old channels 4x for the most part)
The antenna can not tell the difference between Digital and Analog, to it they are the same.
HOWEVER;;; There are "omindirectional" antennas. and "Bi-Directional" and "Mono-Directional" I will attempt to describe all 3
To picture this you need a pencil or better yet a spool of thread or a bottle cap, and a two toothpicks. and a necklace chain, just the chain.
Now put the pencil, bottle cap or spool on the table, arrainge the chain around it so as to form a circle centered on the item.
This is an omni antenna.. Draw a circle where the chain is.
Now replace the spool with a toothpick, Draw the ends out (Techincall it you should form it into a figure 8 but drawing it out in an oval centered on the toothpick, with the toothpick lying on the SHORT axis.. Draw another line around the chain.. NOTICE how much farther it runs out rom the toothpic along the major axis.
now break the 2nd toothipick in half and lay the half against the center of the first like the upright in the letter "T". pull the chain into an egg shape pulling it farther out in the direction the half tooth pick points.. This is a MONO directional antenna
The Omni is the Winegard "Flying Saucer"
The BI-Directional is the Winegard Sensar "Batwing"
The mono direcitonal is the Sensare with the Wingman add on.
Does this help.
The more directional the antenna. the farther it "Sees"