1600–1800 MHz 2 dBi External Rubber Antenna, Omni Rubber Whip, SMA-Male, EX20215

A terminal that works in the 1.6–1.8 GHz range has to put an antenna outside its case, and a 140 mm rubber antenna is about all the housing allows. That band carries 1800 MHz LTE, 1.7 GHz data radios and 1.6 GHz satellite terminals, and the demand for a small external rubber antenna that holds a flat match across the whole span has never been higher. Designers are constantly challenged to keep the link alive when the antenna sits at the back of a plastic box, next to a battery and a metal frame. The solution lies in a rubber antenna with a copper tube element inside. We are proud to introduce the 1600–1800 MHz 2 dBi External Rubber Antenna, model EX20215, a φ13×140 mm black rubber antenna with an SMA-male plug.

This part answers a compact 1.7 GHz requirement. The band is 1600–1800 MHz, the same range in the specification table and in the drawing. Gain is 2 dBi with a 360° horizontal pattern and ±2 dB ovality, so the link holds as the terminal is turned. Polarization is vertical, impedance is 50 Ohm, VSWR is ≤1.92, and maximum power is 50 W. Inside the rubber housing sits a copper tube element, which keeps the match stable in a slim body. The antenna is φ13×140 mm and weighs 0.02 kg, the connector is an SMA-male plug on an RG178 cable, the element is DC grounded, and the range is −40 °C to 55 °C.

Technical Excellence: The Core Advantage

The antenna works on three points: 2 dBi across a 200 MHz band, a copper tube element inside the rubber housing, and a 140 mm body that fits a terminal shell.

2 dBi Across 1600–1800 MHz

The band is 200 MHz wide, and the rubber antenna holds 2 dBi across all of it. Measured peak gain runs 1.33 to 2.22 dBi from 1600 to 1800 MHz, and the measured VSWR is 1.16 at 1.6 GHz and 1.08 at 1.8 GHz, so the match does not wander at either end of the band. The horizontal pattern is 360°, so the terminal does not have to be aimed, and ovality is ±2 dB, so the pattern stays round as the device is set down or hung on a wall.

A Copper Tube Element Inside the Rubber Housing

The radiating element is a copper tube under the rubber cover. Copper carries current with low loss, and the rubber housing protects it from weather and handling, which is why an external rubber antenna survives on a terminal that gets dropped. The measured total efficiency runs 71.2% to 84.7% across 1600–1800 MHz. The pattern also shows how clean the polarization is: the horizontally polarized share of the efficiency is about 1% to 4%, so almost all the radiated power leaves in vertical polarization. That matters at the far end, because a vertical sector antenna or a vertical rubber antenna expects the same sense.

A φ13 mm Rubber Body with an SMA-Male Plug

The body is φ13×140 mm and weighs 0.02 kg, so this rubber antenna adds nothing to a terminal in space or mass. The feed is RG178 cable with an SMA-male plug, the standard small interface on LTE modules, data radios and test boxes. Maximum power is 50 W, the element is DC grounded, and the range is −40 °C to 55 °C. The datasheet drawing shows both a straight body at 140 mm and a right-angle body at 117 mm, so the same rubber antenna can stand up from a panel or turn along a case edge.

Versatile Application Scenarios

Two dBi, a 360° pattern and a 140 mm rubber body make this external rubber antenna useful wherever a terminal needs a small antenna on 1.6–1.8 GHz.

LTE 1800 and 1.7 GHz Data Radios

LTE 1800 terminals and CPE: the 2 dBi rubber antenna covers the 1800 MHz band on a small box, and the vertical polarization matches the sector antenna at the site.

1.7 GHz data radios: the 200 MHz span covers the whole band in one part, so one rubber antenna serves several channel plans.

Satellite and L-Band Terminals

Satellite L-band terminals: the 1600 MHz part of the band sits inside the satellite L-band, and a small rubber antenna is what a handheld terminal can carry.

Telemetry and control units: the copper element keeps efficiency high on a small box, and the SMA plug suits a module that was designed for an external rubber antenna.

Test, Measurement and Bench Setups

Bench instruments: an SMA plug and a 140 mm rubber body suit a test box that needs a quick antenna swap.

Portable terminals and handhelds: the straight and right-angle bodies let the rubber antenna stand up or lie along the case.

Conclusion: A Small Rubber Antenna for 1.6–1.8 GHz

The 1600–1800 MHz 2 dBi External Rubber Antenna, EX20215, does one job: it gives a small terminal a real antenna across a 200 MHz band. The φ13×140 mm black rubber body carries a copper tube element with 2 dBi, a 360° pattern and ±2 dB ovality, VSWR ≤1.92 at 50 Ohm and 50 W, an SMA-male plug on RG178 cable, and DC grounding. Measured efficiency runs 71.2% to 84.7% across 1600–1800 MHz, measured gain runs 1.33 to 2.22 dBi, and measured VSWR is 1.16 at 1.6 GHz and 1.08 at 1.8 GHz. The 0.02 kg weight and −40 °C to 55 °C range state its limits up front. For a compact 1.7 GHz terminal that needs a slim external rubber antenna, this part is the practical choice.