X-Band Omnidirectional High Gain Biconical Array Antenna

In this communication, we present a new omnidirectional antenna based on biconical antenna element to achieve high gain and wideband with center-fed. The feed of antenna is realized by the coupling slot of the middle of the main feeder excite the secondary feeder, that ensuring the maximum gain of the antenna is stable in the horizontal direction. The bandwidth of S11 (-10dB) is enhanced to 11.2% (10.2~11.4GHz) by the capacitive short circuit branch and impedance matching section. The measure results show that the realized gain of array is greater than 8dBi in work bandwidth, and peak realized gain is 9.56dBi. The ripple of the omnidirectional radiation pattern in the H-plane is less than 0.5dB. The proposed biconical arrays are promising for future wireless communication applications.