Hittite has introduced the HMC703LP4E, a DC to 8 GHz, low-noise fractional synthesiser for driving voltage controlled oscillators (VCOs) used in microwave point-to-point radios.
As quadrature amplitude modulation (QAM) in microwave radios moves to higher constellations and signal bandwidths are tightening, excellent phase noise and spurious product performance is mandatory. The HMC703LP4E provides a solution for the tough error vector magnitude (EVM) and integrated phase noise specifications that these high data-rate, frequency-efficient telecommunications systems require.
The device features frequency shift keying (FSK) modulation as well as bi-phase modulation with data rates limited by the loop filter bandwidth (typically 100 kHz). It also features a built-in sweeper mode that supports external or automatic triggered sweeps. The phase coherent frequency sweep mode can be used in test instrumentation, frequency modulated continuous wave (FMCW) sensors and automotive radars. Depending on the chosen phase locked loop bandwidth, the one- or two-way frequency ramp may be continuous or in steps.
The HMC703LP4E offers phase noise performance of -112 dBc/Hz at an offset of 50 kHz and a VCO frequency of 8 GHz in fractional mode. Its floor figure of merit is -230 dBc/Hz in fractional mode. When tested with the HMC508LP5E VCO, the jitter corresponding to double sideband phase noise integration from 100 Hz to 100 MHz offsets is 70,7 fs. This jitter would correspond to an EVM of 0,35% at 8 GHz and a signal-to-noise ratio of 49 dB.
Fractional synthesisers that set the channel step size with the fractional modulus often suffer from channel spurs. The HMC703LP4E’s exact frequency mode achieves exact channel frequencies with zero channel spurs, while double buffering enables strobed frequency hopping. The IC’s maximum PFD frequency is 115 MHz (in integer mode), which permits wider loop bandwidth, improved phase noise performance and faster locking/switching time. Typical in-band integer boundary spur is -60 dBc.
Smart farming with LoRaWAN Otto Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
Real-time visibility is transforming modern agriculture, and Otto Wireless Solutions, together with Dragino, deliver this capability through a comprehensive suite of long-range IoT sensors and gateways designed for smart farming.
Read more...RTK-enhanced GNSS and INS solution Dizzy Enterprises
Telecoms, Datacoms, Wireless, IoT
This latest XSENS MTi-8 Click provides high-accuracy positioning (RTK-supported) and orientation tracking in demanding outdoor embedded applications.
Read more...High-performance double balanced RF mixer RFiber Solutions
Telecoms, Datacoms, Wireless, IoT
The AM5008 from Mercury Systems is a high-performance, double-balanced MMIC mixer designed for wideband applications spanning 2 GHz to 24 GHz.
Read more...Compact NFC antennas enable easy integration
Telecoms, Datacoms, Wireless, IoT
Leankon has expanded its 13,56 MHz NFC antenna portfolio with a comprehensive suite of nine off the shelf products designed for next generation IoT applications.
Read more...Ultra-low jitter clocks Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Skyworks has introduced a new family of ultra-low jitter programmable clocks designed to meet the increasing demands of next-gen connectivity.
Read more...Efficient Bluetooth SoC Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The EFR32BG29 wireless SoC from Silicon Labs is a highly efficient, high memory, low-power, and ultra compact SoC designed for secure and high-performance wireless networking for IoT devices.
Read more...Minimal size, maximum flexibility Würth Elektronik eiSos
Telecoms, Datacoms, Wireless, IoT
Würth Elektronik has introduced two highly compact radio modules that give developers maximum freedom in designing proprietary wireless solutions that go beyond standard protocols.
Read more...HackRF Pro advances Open SDR performance IOT Electronics
Telecoms, Datacoms, Wireless, IoT
Designed for engineers, researchers, and radio enthusiasts alike, the HackRF Pro can transmit and receive signals across a wide frequency range of 100 kHz to 6 GHz, making it a versatile tool for testing and developing modern and emerging radio technologies.
Read more...Deterministic high-speed Ethernet
Telecoms, Datacoms, Wireless, IoT
The Fraunhofer Institute for Photonic Microsystems IPMS has developed a new 10G TSN endpoint IP Core, enabling deterministic real-time communication at data rates of up to 10 Gbit/s.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version