The start of terrestrial digital TV broadcasting may
considerably reduce the need for on-roof directional receiving
antennas and increase the use of indoor antennas. Most
terrestrial digital TV broadcasting channels are in the UHF
band. The most common UHF indoor digital TV receiving
antennas are loop antennas and triangular dipoles [1].
However, they have large sizes and they are not rigid on top
of TV sets. Also, they are balanced antennas and, hence, they
need baluns. Furthermore, they are sensitive to only one
polarization and, therefore, they have a poor indoor
performance. Moreover, they are pure electric field antennas
and, hence, their performance is significantly deteriorated in
vicinity of conductive objects such as concrete walls. On the
other hand, conventional indoor TV receiving antennas cannot
be used in multi-input (MI) configurations and techniques for
space and/or polarization diversity. In order to overcome some
of the above problems, other indoor TV receiving antennas
have been developed and published as in references [2]-[4].