A Horizontal Azimuth Pattern-Reconfigurable Antenna Using Omnidirectional Microstrip Arrays for WLAN Application

Table 1

Different configuration states of the proposed antenna.

State	p-i-n1	p-i-n2	p-i-n3	p-i-n4	Gain (dBi)	HPBW (°)
OA					3.91
I	On	On	On	On	-1.64	88.200
II	Off	Off	Off	Off	5.09	243.50
III	On	Off	Off	Off	6.01	299.90
	Off	On	Off	Off	5.99	275.70
	Off	Off	On	Off	5.71	277.90
	Off	Off	Off	On	5.93	283.70
IV	Off	On	On	On	5.96	108.70
	On	Off	On	On	5.53	111.80
	On	On	Off	On	5.56	115.70
	On	On	On	Off	5.94	106.90
V	On	On	Off	Off	8.52	57.00
	Off	On	On	Off	7.62	80.10
	Off	Off	On	On	8.10	70.00
	On	Off	Off	On	7.35	81.20
VI	Off	On	Off	On	5.43	81.30
	On	Off	On	Off	4.56	79.30

OA: the original antenna without parasitic elements.