FAQs relating to our gigaNOVA, lamiiANT, ceriiANT and flexiiANT antennas:
Yes, like most embedded surface mount (SMT) antennas, Antenova’s antennas use PI matching circuits between the antenna terminal and the radio 50 Ohm input port. The reason for this is to allow for the antenna resonance to be tuned and optimized to suit the customer’s end application environment. Changes with respect to differences between the real-world customer application and our standard free-space-tuned evaluation printed circuit boards can, and very often do, translate into a need for completely different values in the matching circuit components order to achieve the optimum performance in the customer application. The exception to this is our range of new FPC antennas which do not require matching.
Yes, Antenova can offer a no-charge Gerber file review to make recommendations on RF layout, check that impedance lines are correctly laid out, and that the antenna placement is consistent with the design guidelines in the datasheets. In addition, we offer a paid-for antenna tuning service that includes VSWR, 3D gain pattern and efficiency measurements of the antenna, for your specific device, contact email@example.com for more information.
The answer will depend on your application and range requirements. Antenova offers antennas of various sizes to suit many IoT and M2M applications as well as various topologies – monopole (ground plane free), to PiFA (above ground plane) and dipoles, IFA and magnetic dipole structures. As an example, if your device is for wearable applications, we would recommend the Weii (SRCW004) antenna because its small size and magnetic dipole structure make it very suitable for wearable applications and its tuning is minimally affected by the human body. If in doubt contact our expert technical sales and applications engineering folks at firstname.lastname@example.org for further advice on device selection.
The answer here may require a detailed review by our applications engineering staff to determine if Lucida is a good fit for your application or not. If your ground plane space on your PCB is insufficient then we may recommend that you consider an off-board mount antenna from our flexiiANT family of FPC antennas which are ground plane independent and offer extremely high efficiency even in the low bands (eg: 70% at 700MHz LTE band). Contact email@example.com for further advice and information on our detailed engineering integration services including OTA go/no-go testing services for devices that require PTCRB certification.
Sinica is a multi-satellite broad band antenna and will work for GPS as well as Glonass, Beidou and Galileo constellations. For optimal performance the antenna should be placed as shown in the antenna integration guide in the datasheet – midway along the longest edge of your application PCB. Since it is a magnetic dipole structure this will give the best performance/efficiency. Avoid placing the antenna on a corner.
No, just because your device is smaller than the Weii evaluation board does not necessarily mean it will not work. In general, while Antenova’s datasheet performance is based on the published evaluation board size in a free space environment, the antenna is capable of performing on smaller PCB ground plane sizes, however there will be trade off in the performance achieved. Our Weii datasheet contains a chart showing ground plane size versus efficiency – this will help you to determine how small you would be able to go and still achieve acceptable performance. Also, you should consider the end application and the range you need to achieve. While we publish a peak efficiency of 70% you may only wish to achieve a very short range such as from a table top to the floor, or between a mouse and a keyboard, so some applications can live with an efficiency as low as 15-20% and hence even with a tiny ground plane, you can still have acceptable performance from the system.
You can download a 3D .stp mechanical outline file for Solidworks™ or 3D CAD modeling and CAD Gerber files of the solder pad footprint at www.antenova-M2M.com/products/. These files are listed under the individual products along with the technical datasheets.
The easiest and fastest solution is to obtain a coaxial between-series RF adapter to go from SMA to IPEX MHF. There are many online suppliers of such adapters. Contact firstname.lastname@example.org for recommendations. Alternatively, you may place a special order for the flexiiANT antenna you wish to use, with another compatible connector.
Antenova’s RADIONOVA M10478 A3 series is the perfect solution. It includes an onboard miniature antenna which when placed as recommended in our datasheet, leverages magnetic dipole topology to create RHCP performance comparable and benchmarked close to a traditional 17mm x17mm x4mm RHCP patch – but its footprint is much smaller.
Contact email@example.com for a free of charge reference design and BOM for this configuration.
Make sure that the matching circuit for the module has been tuned/optimized for your device and environment. If that has been done, then make sure you are testing out of doors with a clear view of the sky. If you are still unable to get acceptable performance then contact firstname.lastname@example.org for technical support and one of our customer support specialists will be happy to help you.