A circuit board for wireless communications includes communication
circuitry for modulating and/or demodulating a radio frequency (RF)
signal and an antenna apparatus for transmitting and receiving the RF
signal, the antenna apparatus having selectable antenna elements located
near one or more peripheries of the circuit board. A first antenna
element produces a first directional radiation pattern; a second antenna
element produces a second directional radiation pattern offset from the
first radiation pattern. The antenna elements may include one or more
reflectors configured to provide gain and broaden the frequency response
of the antenna element. A switching network couples one or more of the
selectable elements to the communication circuitry and provides impedance
matching regardless of which or how many of the antenna elements are
selected. Selecting different combinations of antenna elements results in
a configurable radiation pattern; alternatively, selecting several
elements may result in an omnidirectional radiation pattern.