HA.21.A

HA.21.A Description: 2dBi 868MHz Embedded Helical Monopole Antenna Features: Quarter-wave Monopole Type Helical Antenna 868 MHz ISM Band 2dBi peak gain and 70% efficiency Direct mounted on-board design Mechanically sturdy in a compact size Dimensions: 11mm, Ø10.25mm 1mm diameter copper RoHS & Reach Compliant SPE-16-8-016-C 1. Introduction 3 2. Specifications 4 3. Antenna Characteristics 10 4. Radiation Patterns 15 5. Mechanical Drawing 17 6. Packaging 18 7. Application Note 19 Changelog 20 Taoglas makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Taoglas reserves all rights to this document and the information contained herein. Reproduction, use or disclosure to third parties without express permission is strictly prohibited. SPE-16-8-016-C www.taoglas.com 2 1. Introduction 1. Introduction 1. Introduction 1. Introduction 1. Introduction The HA.21.A is an ISM 868MHz quarter-wave monopole helical antenna. Small and compact, yet stable, this helical coil antenna is ideal for typical 868MHz applications such as: 1. - 1. The helical coil antenna offers industry leading 70% efficiency at 868MHz on a 126.8 x 80.1mm ground plane, with matching components (orthogonally mounted to ground plane, see HAD.B.21 performance). Made of copper alloy, the helical coil is mechanically sturdy. It can be easily mounted on the surface by soldering. Since it is a monopole design, it must be connected to the main-board device ground-plane to radiate efficiently. 1. Smart Metering Introduction Smart security systems Remote asset monitoring and other wireless communication devices. Introduction Introduction Taoglas has two models of evaluation boards, HAD.A.21 and HAD.B.21, to show performance when the antenna is parallel mounted, or orthogonally mounted to the ground plane. Small embedded antennas can easily detune or lose efficiency on different board and in different device environments. Taoglas offers a testing and tuning service for custom antennas, subject to NRE and MOQ. For more information or installation instructions please contact your regional Taoglas customer service team. SPE-16-8-016-C www.taoglas.com 3 2. Specifications 3. Antenna Characteristics2. Frequency (MHz) Specifications Electrical 850 868 880 0.77 0.27 1.83 1.64 HAD.A.21 -2.82 Antenna Radiation Patterns3. Antenna-2.87 -3.35 Peak Gain (dBi) 3. Antenna Characteristics HAD.A.21 0.76 HAD.B.21 1.79 Average Gain (dB) 4. HAD.B.21 -1.42 -1.49 -1.74 HAD.A.21 52.21 51.52 46.22 HAD.B.21 72.10 70.95 66.92 Characteristics2. 3. 3. 4. Specifications Efficiency (%) Antenna Return Loss(dB) Characteristics2. Specifications