388-470 MHz patch antennas

20 November 2002 Telecoms, Datacoms, Wireless, IoT

Poynting Antennas recently added a low profile patch antenna to its range of specialised antennas. This antenna covers the 388-470 MHz band and can be used in many applications, for example: UHF-licensed voice and data communications; trunking including TETRA bands; active RFID systems; license-free 403 MHz and 433 MHz bands; 433 MHz radio amateur band.

The antenna has a gain of 7-9,5 dBi with a VSWR of less than 1,5 over the band. The 400 x 400 mm antenna is linearly polarised and is supplied with a N-Type female connector as standard, but other options are available.

The antenna has been tested in a tunnel in Switzerland for vehicle active RFID systems by Michael Bruno of Becker Electronics, who commented, "with a normal stubby we get a 30 m read range and with the patch antenna we could not get far away enough to lose the signal."

The antenna has also found successful underground application in an RFID system implemented by Ken Morrell of Mine Radio Systems. Here the antenna directivity and the 13 dB F/B ratio is used to detect the direction of movement of people along a tunnel.

Brian Fowler of Rotrax has also tested the antenna for its telemetry units and has indicated strong interest in the product for use with the units. Many of them operate in the licence-free 403 and 433 MHz bands.

The antenna is unique in that Poynting is not aware of any other commercial patch antennas in this frequency band. The patch is waterproof and is supplied with mounting hardware for pole and wall mounting.

For more information contact Poynting Antennas, 011 265 5155.

Further reading:

Simplifying system design
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
The FGMC63N tri-band MCU Wi-Fi 6E module from Quectel addresses offers integrated connectivity across 2,4 GHz, 5 GHz, and 6 GHz bands in a compact, highly optimised design.

Read more...

---

Dragino’s connectivity catalogue
Otto Wireless Solutions Telecoms, Datacoms, Wireless, IoT
Where Wi-Fi demands frequent charging and covers tens of meters, and traditional cellular consumes too much power for battery-operated nodes, LoRaWAN threads the needle.

Read more...

---

RF filters explained
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
As RF environments become increasingly crowded, RF filters play a critical role in maintaining signal quality, improving system performance, and ensuring reliable operation.

Read more...

---

Practical design strategies for 5G
RF Design Telecoms, Datacoms, Wireless, IoT
The Cavli CQM211 aims to provide a platform that combines strong 5G connectivity with onboard compute capability, as well as interface flexibility that suits both new designs and rapid migrations from earlier products.

Read more...

---

GigaDevice expands optical communication portfolio
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
GigaDevice has introduced the new GD32E512 and GD32E252 series MCUs specifically designed for optical module applications.

Read more...

---

An industry-first Android 16 smart module solution
RF Design Computer/Embedded Technology Telecoms, Datacoms, Wireless, IoT
The MeiG Smart SLM580 4G Smart Module features native support for Android 16 and covers core frequency bands in major countries and regions worldwide.

Read more...

---

High performance RF signal conditioning
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
The AM3269 from Mercury Systems is a high-performance RF preselector module designed to improve receiver sensitivity and signal integrity in demanding electronic warfare, signals intelligence, test, and communications applications.

Read more...

---

RF filters explained
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
As RF environments become increasingly crowded, RF filters play a critical role in maintaining signal quality, improving system performance, and ensuring reliable operation.

Read more...

---

GigaDevice expands optical communication portfolio
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
GigaDevice has introduced the new GD32E512 and GD32E252 series MCUs specifically designed for optical module applications.

Read more...

---

Industrial connectivity without compromise
Telecoms, Datacoms, Wireless, IoT
The IR315 combines 4G LTE, Wi-Fi, Ethernet, and VPN technologies into a rugged, industrial-grade platform that enables seamless connectivity across a wide range of applications.

Read more...

---