Product category:
Plant- and Machine-Wide Communications
News Release from: RF Solutions | Subject: QFMR6 receiver
Edited by the Engineeringtalk Editorial
Team on 03 August 2001
Miniature transmitter/receiver overcomes
noise
The latest miniature FM transmitter and receiver modules from RF Solutions simplify design, save space and reduce component count in applications needing reliable licence-exempt wireless links
The latest miniature FM transmitter and receiver modules from RF Solutions simplify design, save space and reduce component count in applications requiring highly reliable licence-exempt wireless links Ideal for portable, battery-powered designs, the QFMT6 transmitter and QFMR6 receiver are fully shielded, 'off-the-shelf' modules that will suit vehicle alarms, domestic and commercial security systems, process monitoring schemes and computer networking applications
This article was originally published on Engineeringtalk on 28 Sep 2000 at 8.00am (UK)
Related stories
Real-time emulator speeds PIC16F87X development
The latest real-time emulation hardware module from RF Solutions is designed to simplifythe development of embedded systems based on Arizona Microchip's PIC16F87X family of 8-bit microcontrollers
Remote control transmitters need no licence
RF Solutions has launched a series of rugged, licence-exempt hand-held radio transmitter encoders for remote control applications designed to operate in harsh and outdoor environments
Particularly suited to applications operating in areas of high interference or high levels of radio traffic, the new miniature modules allow designers to quickly and easily implement data links with speeds up to 64kbps and operating distances of 200m.
The devices are supplied in shielded SIL packages and operate at the European approved frequency of 868MHz.
Based around a phase lock loop (PLL) and crystal oscillator, the QFMT6 transmitter provides an accurately controlled RF output in the frequency domain.
This allows narrow filtering at the receiver, significantly increasing the immunity to interference.
An on-board voltage regulator enhances performance from improved supply filtering while ensuring a constant RF output level.
The QFMR6 receiver is based on a single conversion superhet design that utilises a crystal-based phase lock loop (PLL) for accurate generation of the local oscillator.
This allows the use of high Q bandpass filters, resulting in good adjacent channel selectivity and high interference immunity.
Dynamic range for the receiver is rated at better than 120dB, while analogue and digital outputs simplify integration with external circuitry and microprocessors.
A built-in Received Signal Strength Indicator (RSSI) provides a DC output voltage that is proportional to the RF input signal.
Both the QFMT6 and QFMR6 are fully pin compatible with existing modules, allowing engineers to improve the performance of their applications without modifying the basic design.
Each device can operate from a 5V supply and will work at temperatures of up to 55C as standard.
The QFMR6 is also available in an extended temperature version that is rated for operation between -40 and 80C.
The QFMT6 has dimensions of 31.5 x 10 x 3.4mm, while the QFMR6 measures 49.05 x 17 x 4.5mm.
• RF Solutions: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
Search the Pro-Talk network of sites
