To close out 2023, Antenova is releasing four surface-mount wireless antennas designed and developed for different applications.

The Curta SR4L096 is for wireless deployments on 4G and 3G LTE bands. It can be integrated as single antenna or in a MIMO system. The surface-mount antenna measures 40 by 10 by 1.7mm with placement on the short end of the host PCB.

Curta supports LTE, GSM, CDMA, DCS, PCS, WCDMA, UMTS, HSPDA, GPRS, Edge and IMT covering multiple bands and different efficiency ratings – 698-960MHz (56%), 1710-2170MHz (66%), 2300-2400MHz (52%), and 2500-2700MHz (53%). Average peak gain ranges from -2.5dB, -1.7dB, -2.8dB and -2.7dB, respectively. Temperature range is -40 to +140˚C to support automotive, full-range industrial and power supply level requirements.

Applications include 4G routers, OBD2 vehicle tracking systems, medical equipment, tablets, industrial and MIMO systems, femtocell and picocell networks, and IoT sensor networks. An evaluation board (SRL096-EVB-1) is available for Curta to conduct internal analysis.

The Abdita SCRW090 is a micro-miniature antenna developed for 2.4GHz applications. It offers longer range connectivity than most ceramic antennas due to its efficiency of 60.5%, and it fits on PCBs as small as 50 by 30mm and requires 7 by 7mm clearance area. Overall size is 1 by 0.5 by 0.5mm.

The antenna is simple to integrate into a design and operates on various GND plane sizes. It uses a ground plane to radiate efficiently in 2.4GHz applications such as Bluetooth, BLE, wifi (802.11a/b/g/n) and Zigbee. Operating temperature is -40 to +125˚C. Peak gain is 2.8dBi with an average gain of -1.9dB. Maximum return loss is -13.0dB and maximum VSWR 1.6:1.

Resistance to de-tuning effects means devices can work well in different environments. Abdita has good coexistence in that it operates with other antenna types nearby. Common applications include small wearable devices, medical devices with Bluetooth, wifi and satellite, personal navigation devices, and wireless sensor networks. Tape and reel packaging makes it suitable for high-volume manufacturing.

“The Abdita ceramic antenna has many advantages over a trace antenna such as smaller area, and is less affected by nearby metal objects, which would detune a trace antenna,” said Michael Castle, product manager for UK-based Antenova. “Abdita can be quickly added into a design by following the recommended design.”

The Admotus SRCG091 surface-mount ceramic antenna boasts an efficiency of 53% across the L1 band in a miniature footprint. It provides connectivity on L1 GNSS signals on all constellations including GPS-L1 at 1575.42MHz, Glonass L1 at 1602MHz, Galileo L1 at 1575.42MHz, Beidou B1, and QZSS.

The Admotus measures 1.0 by 0.5 by 0.5mm, requires 7.0 by 15mm clearance area and performs well on small PCB sizes. Peak gain is 0.9dBi with average gain of -2.6dB, maximum return loss of -11.5dB, and maximum VSWR 1.8:1. A companion evaluation PCB (SRCW091-EVB-1) is available for internal analysis.

It suits all GNSS positioning applications in the L1 band (1559-1609MHz) such as wearable devices for fitness and medical monitoring, small portable tracking devices used to track keys, pets, bikes, scooters, jewellery and other valuable assets, UAVs or drones, agricultural robotics, and telematics devices.

The Dolo SR4W089 surface-mount antenna is for all 2.4GHz applications. Efficiency is 76% in 2.45GHz band applications. This enables data connectivity over longer ranges than a simple trace design on the host PCB.

Three placement options are available – centre right and left. Optimal performance is in centre or left-hand side placement.

Dolo uses a ground plane to radiate efficiently in 2.4GHz applications such as Bluetooth, BLE, wifi (802.11a/b/g/n) and Zigbee. It measures 7.5 by 4.0 by 0.9mm and requires a clearance area of 7.5 by 6mm. Operating temperature is -40 to +125˚C. Peak gain is 3.8dBi with an average gain of -1.2dB. Maximum return loss is -10.6dB, with maximum VSWR at 1.8:1.

The required minimum clearance area around the antenna is critical to the performance and must be applied through all four layers of PCB. A companion evaluation PCB (SR4W089-EVB-1) for internal analysis. The size and clearance area are suitable for wearables such as fitness and wellness trackers, medical devices, wireless sensor networks, IoT and smart cities and smart grid applications.

Antenova (www.antenova.com) provides design advice and technical support, including custom antenna design, engineering, integration and test services.