Description

A Whip Antenna RP 9dBi 2.4GHz is a high-gain omnidirectional rubber-duck antenna designed for the 2.4 GHz Wi-Fi / Bluetooth / Zigbee band. It features a Reverse Polarity (RP) connector (typically RP-SMA Male) and provides a significant 9 dBi gain to expand horizontal signal range.Part Designation BreakdownWHIP ANTENNA: Flexible, tall rubber-duck / rod antenna body housing an elevated internal dipole or collinear array.RP (Reverse Polarity): Uses a Reverse Polarity connector (e.g., RP-SMA Male), which features an outer threaded coupling nut with an internal socket receptacle instead of a center pin.9dBi: High omnidirectional gain. Compresses the vertical beamwidth into a flatter, “pancake-like” $360^circ$ horizontal pattern for greater range.2.4GHz: Tuned for the $2.4text{ GHz to } 2.5text{ GHz}$ ISM band (802.11b/g/n Wi-Fi, Bluetooth, Zigbee, drone control).Technical SpecificationsParameterSpecificationFrequency Range$2.4text{ GHz} - 2.5text{ GHz}$ ($2400text{ MHz} - 2500text{ MHz}$)Gain$9text{ dBi}$ (High Gain)Radiation PatternOmnidirectional ($360^circ$ Horizontal)Vertical Beamwidth$sim 15^circ - 25^circ$ (Narrow vertical elevation)Impedance$50 Omega$VSWR$le 1.8 - 2.0$PolarizationLinear VerticalConnector TypeRP-SMA Male (Female pin contact inside threaded nut)Physical LengthApproximately $35text{ cm} - 39text{ cm}$ ($14text{ to } 15.5text{ inches}$)Mounting/Joint$90^circ$ Tilt and $360^circ$ Swivel KnuckleKey Features & ConsiderationsExtended Horizontal Distance: The high 9 dBi gain flattens the RF radiation pattern, extending coverage outwards horizontally.Narrow Elevation Angle: Because energy is compressed horizontally, signal coverage directly above or below the antenna (vertical direction) is reduced compared to lower-gain ($2text{--}5text{ dBi}$) antennas.RP-SMA Interface Standard: Complies with consumer wireless equipment standards (routers, access points, Wi-Fi cards) to prevent standard SMA cross-connection.