2 GHz to 18 GHz Cavity Backed Spiral Antenna OBS-20180

HOT

2 GHz to 18 GHz Cavity Backed Spiral Antenna OBS-20180

0 out of 5

$1235

The OBS-20180 is a compact, cavity-backed spiral antenna designed for high-performance transmission and reception across the 2.0 GHz to18.0 GHz frequency range. With moderate gain and VSWR, this circularly polarized antenna provides an excellent impedance match and radiation pattern.

Key features of this antenna include the ability to receive both linearly and circularly polarized signals, with linear gain approximately 3 dB lower than circular gain. Its low-profile design, planar aperture, no phase center offset, flexibility for carrying, and lightweight and symmetrical radiation beam width ensure consistent performance across the entire frequency band. The antenna’s outermost dimensions are a diameter of 68mm and a height of 50mm.

With all these benefits, it is ideal for a variety of demanding applications. Firstly, this antenna is particularly effective in short-range, high-bandwidth communication systems, where higher frequencies allow for faster data transmission. This makes it an excellent choice for high-speed wireless data links and microwave communication systems. In addition, it is also well-suited for precision radar and imaging applications, providing high resolution for ground surveillance radars, avionics, and synthetic aperture radar systems. In electronic warfare (EW), this antenna excels in jamming enemy communication systems and gathering signals intelligence (SIGINT). Its higher frequency range enables enhanced performance in defense and security operations, making it a critical component in modern electronic warfare strategies.https://www.rfecho.com/product-category/rf-antenna/cavity-backed-spiral-antenna/

SKU: OBS-20180 Categories: Cavity Backed Spiral Antenna, RF Antenna

Description

SPEC

Cavity Backed Spiral Antenna

2GHz to 18GHz

OBS20180

The OBS20180 is a compact, moderate gain, moderate VSWR, circularly-polarized cavity-backed spiral antenna designed to transmit and receive in the frequency band of 2.0 GHz to 18.0 GHz. The antenna exhibits excellent impedance matching and a well-defined radiation pattern.

It is capable of receiving both linearly polarized and circularly polarized signals. The linear gain (dBil) is about 3 dB lower than the circular gain (dBic).

The antenna offers advantages such as a low profile, planar aperture, no phase center offset, near-constant beam width across the frequency band, symmetrical radiation beam-width, high flexibility for portability, and lightweight design.

These features make it ideal for applications in electronic warfare, direction finding, telemetry, surveillance systems, and flush-mounted airborne installations. The antenna can also function as a broadband feed for reflector antennas.

The antenna’s dimensions are a diameter of 68mm and a height of 50mm.

Applications

  • Satellite communications
  • Personal mobile communications
  • Electronic warfare, direction finding, telemetry, and surveillance systems
  • Embedded airborne applications

Features

  • Highly portable
  • Wide frequency band
  • Lightweight
  • Compact design
  • Easy to package
  • Wide beam width
  • Circular polarization with consistent beam width
Cavity Backed Spiral Antenna Specifications
Part No. OBS20180
Frequency 2GHz – 18GHz
Nominal Gain -3 dB Typ ~ 1 dB Typ
VSWR Maximum 2.5:1, Typical 2.0:1
Pattern Directional Beam
3 dB Beam Width 65° Minimum, Typical
10 dB Beam Width 120° Typical
Input Impedance 50 Ohms Nominal
Input Connector SMA Female

PDF


Outline


OBS-20180 Outline

Plot


OBS-20180 Plot 1
OBS-20180 Plot 2
OBS-20180 Plot 3

Additional information

Min. Frequency (GHz)

2

Max. Frequency (GHz)

18

Gain (dBi)

-3 Typ~1 Typ16°

VSWR

2.5:1

Impedance (Ω)

50

Connection Type

SMA-Female

Polarization

LHCP/RHCP

You've just added this product to the cart: