The invention relates to a
design technology of a horizontal polarization
omnidirectional antenna with an adjustable lobe
elevation angle, which solves the problems of the traditional horizontal polarization
omnidirectional antenna, such as fixed
pitch face wave beam directing, low
antenna gain and
high impedance matching difficulty. The antenna comprises a top-end reflection plate, a micro-strip antenna, a bottom-end reflection plate and supporting medium columns, wherein the micro-strip antenna consists of four arc-shaped micro-strip dipoles which are arranged along the circumstance;
metal plates on the top end and the bottom end are arranged on the upper side and the lower side of the micro-strip antenna; the sizes of the upper
metal plate and the lower
metal plate can change the directing of the
pitch face wave beam; the micro-strip antenna is clamped between flanges of the medium columns on two sides and is fixed by bolts; and a hole is punched at the middle part of the lower metal plate and a feed cable can pass through the hole. The
standing wave of the antenna is less than 1.5 within 10% of relative
frequency band,
gain in an
azimuth plane is higher than 2.3dB,
gain fluctuation is less than 1dB, a
cross polarization level is lower than -30dB, and wave beam directing is adjustable. According to the
design technology, the
antenna gain, the
impedance matching, the
cross polarization performance and the anti-interference performance of the top end and the bottom end of the antenna are improved. The
design technology is suitable for the fields, such as
broadcasting communication and
electronic countermeasure.