Herzlich Willkommen beim beam-Verlag in Marburg, dem Fachverlag für anspruchsvolle Elektronik-Literatur.


Wir freuen uns, Sie auf unserem ePaper-Kiosk begrüßen zu können.

Aufrufe
vor 5 Jahren

3-2019

  • Text
  • Komponenten
  • Technik
  • Radio
  • Filter
  • Oszillatoren
  • Quarze
  • Emv
  • Messtechnik
  • Bauelemente
  • Antenna
  • Software
  • Amplifier
  • Wireless
  • Array
  • Frequency
Fachzeitschrift für Hochfrequenz- und Mikrowellentechnik

RF & Wireless LPWAN FEM

RF & Wireless LPWAN FEM Supports Unlicensed Band Technologies only 1.5 W. The QPB9010 is offered in an 11 x 11 mm package. ■ RFMW, Ltd. info@rfmw.com, www.rfmw.com GaAs LNA Die Supports Satellite Communications Space-qualified Ka-Band Microwave Rotary Joint Link Microtek has designed and produced a spaceflight-qualified microwave rotary joint and associated waveguide components as part of a Ka-band antenna pointing mechanism (APM) being developed by Surrey Satellite Technology Ltd. Destined for use on low-Earth-orbit satellites, the Ka-band APM will enable the maximum amount of high-data-rate information, such as high-resolution images or video, to be transmitted to a ground station as the satellite completes its rapid traverse of the sky. Within the APM, the rotary joint performs the critical function of feeding the RF carrier signal from the static side of the antenna to the rotating side. SSTL’s APM design includes two Link Microtek rotary joints – one for azimuth and one for elevation – as well as interconnecting waveguides, which are made from aluminium to minimise weight and are crucial to the overall RF performance of the system. Each rotary joint is of single-channel, non-contacting design covering the frequency band 25.5 to 27 GHz. Also made from aluminium, the rotary joints feature a WR34 waveguide interface on both ends and a bespoke flange design. The development of the new Ka-band APM will significantly enhance SSTL’s data downlink capability, enabling it to support a data throughput of up to 1Gbps for a variety of high-resolution imaging applications. The picture shows one of the Link Microtek rotary joints being inserted into SSTL’s Ka-band antenna pointing mechanism. ■ Link Microtek, Ltd. www.linkmicrotek.com www.sstl.co.uk RFMW, Ltd. announced design and sales support for a highly integrated T/R FEM designed for high power ISM applications. Operating in the 860 to 930 MHz range, the Skyworks SKY66423-11 is ideal for LP-WAN applications, LoRa, SigFox and other unlicensed band technologies including sensors, beacons, smartwatches, thermostats, wireless cameras, smoke/CO detectors and medical pendants. Delivering 27 dBm transmit power, the SKY66423-11 effectively quadruples the communication range of a standalone SoC. It also provides boosted receiver sensitivity, offering as much as 11 dB improvement over of a standalone SoC. This FEM integrates PA, LNA, switches and logic controls to save PCB space while reducing system current requirements by up to 30%. Capable of battery powered operation, it’s offered in a 3 x 3 mm MCM package. ■ RFMW, Ltd. info@rfmw.com www.rfmw.com xPON Video Receiver with Constant Gain RFMW, Ltd. announced design and sales support for a xPON Video Receiver with Integrated VCA. With a frequency span of 45 to 1218 MHz, Qorvo’s QPB9010 serves applications in xPON RF overlay video receivers for FTTX triplexer-equipped optical network terminations (ONT) and RFoG network interface units (NIU). The integrated voltage controlled attenuator (25 dB range), along with external control circuitry, provides AGC to maintain a constant 19 to 23 dBmV/channel output to ensure consistent video quality. Operating from a 12 V supply, power consumption is RFMW, Ltd. announces design and sales support for a high performance LNA covering 7 to 14 GHz. The Qorvo QPA2609D provides 27 dB of small signal gain with a noise figure of 1.1 dB for point-to-point and satellite communication systems. Available in DIE format measuring 2.4 x 1 mm, the QPA2609D is matched to 50 ohms with integrated DC blocking caps on both I/O ports for easy handling and simple system integration. OIP3 is 25 dBm. P1dB is 18 dBm. Biased with 3.5 V, this GaAs device draws 120 mA. ■ RFMW, Ltd. info@rfmw.com, www.rfmw.com 3.3 V Optimized WiFi FEM Maintains High Linear Output RFMW, Ltd. announced design and sales support for an energy efficient, 802.11a/n/ ac/ax, WiFi FEM. Qorvo’s QPF4578 frontend module integrates a 5 GHz PA, SP2T switch and bypassable low noise amplifier (LNA) into a single device. MCSO power output is 24.5 dBm with a transmit gain of 31 dB. Operating in the 5150 to 5925 MHz frequency range, the QPF4578 offers 35 dB rejection of 2.4 GHz Rx signals. Rx noise figure is 1.9 dB while Rx gain is 15 dB. Integrated matching minimizes layout area when using this 5 x 3 mm, QFN device that conserves power consumption while maintaining the highest linear output power and leading edge throughput. ■ RFMW, Ltd. info@rfmw.com, www.rfmw.com 70 hf-praxis 3/2019

RF & Wireless Ku-Band Power Amplifier offers 40+ Watts RFMW, Ltd. announced design and sales support for a Ku-band solid state power amplifier. The Aethercomm SSPA 16.75- 20.25-40 operates from 16.75-20.25 GHz and delivers a minimum output power of 40 Watts. Using GaN technology, it’s optimized for high shock and vibration requirements supporting operation from -40 to +70 °C base plate temperature. Typical SSPA 16.75-20.25-40 power gain is 46 dB minimum. Input and output SWR is 2 maximum. This SSPA can be blanked on and off in less than 10 µsec. OIP3 is 51 dBm minimum. Operating from a 28 V power supply, standard features include reverse polarity protection and output short and open circuit protection along with an over-temperature shut down feature to protect the amplifier. The housing volume is approximately 4“ (W) x 5“ (l) x 2“ (H). ■ RFMW, Ltd. info@rfmw.com, www.rfmw.com Low-PIM Coaxial Cable Assemblies Pasternack has launched a new line of low- PIM coaxial cable assemblies that are ideal for distributed antenna systems (DAS) and are available in standard and custom lengths with same-day delivery. Pasternack’s new series of low-PIM coaxial cable assemblies consists of 18 standard configuration that boast PIM levels of

hf-praxis

PC & Industrie

© beam-Verlag Dipl.-Ing. Reinhard Birchel