Spinner has designed a bandpass filter with a larger resonator cross-section of 200 x 200 mm2, where the shape of the resonator inner conductors is adapted to the requirements and an improved convection cooling system. Using this filter it is possible to build combiners with a broadband input for analog TV transmitters suitable for 30/3 kW, standard L.
In contrast to standard G, in standard L, the vestigial sideband does extend to the lower channel boundary, and the sound carrier is only 250 kHz away from the upper channel boundary. If a digital and an adjacent analog channel have to be combined, with the digital channel passing the filters, problems may occur. In the neighbourhood of the channel boundaries the filters in use feature a reflection attenuation which must not be neglected because it weakens the analog signal.
The filters transform the resulting power loss into heat, ie, the filters are not only heated up by the transmitted digital signal, but also by the analog signal which is not completely reflected. This heating by the analog signal mainly affects the first three resonators, which may therefore soon suffer from thermal overload. There are two approaches to solving the problem. The resonator quality can be improved so as to achieve higher edge steepness, or the arising heat can be discharged as effectively as possible. Both measures cause the filter dimensions to grow.
Full sensor to cloud solution CST Electronics
Telecoms, Datacoms, Wireless, IoT
NeoCortec has demonstrated the seamless and rapid development of full sensor-to-cloud solutions using NeoMesh Click boards from MikroE and the IoTConnect cloud solution from Avnet.
Read more...Long-range Wi-Fi HaLow module TRX Electronics
Telecoms, Datacoms, Wireless, IoT
One of Mouser’s newest products is the Morse Micro MM6108-MF08651-US Wi-Fi HaLow Module, which adheres to the IEEE 802.11ah standard.
Read more...Quectel launches 3GPP NTN comms module Quectel Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
Quectel Wireless Solutions has announced the Quectel BG95-S5 3GPP non-terrestrial network (NTN) satellite communication module.
Read more...SIMCom’s A7673x series Otto Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
SIMCom recently released the A7673X series, a Cat.1 bis module based on the ASR1606 chipset, that supports wireless communication modes of LTE-FDD, with a maximum downlink rate of 10 Mbps and a maximum uplink rate of 5 Mbps.
Read more...Long-range connectivity module Avnet Silica
Telecoms, Datacoms, Wireless, IoT
Digi XBee XR 868 RF Modules support the deployment of long-range connectivity applications, and support point-to-point and mesh networking protocols.
Read more...4G LTE-M/NB-IoT connectivity reference design iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Developed around the industry-leading Nordic nRF9160 module, the platform comes complete with a newly-developed LTE antenna, ATRIA, which is pre-certified to operate over the full LTE-M and NB-IoT bands.
Read more...Antennas to meet all connectivity requirements Electrocomp
Telecoms, Datacoms, Wireless, IoT
Kyocera AVX RF antennas meet today’s connectivity demands in the LTE, Wi-Fi, Bluetooth, GNSS, and ISM wireless bands, available in surface mount, patch or external configurations.
Read more...Introducing SIMCom’s new A7673X series Otto Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
SIMCom recently released the A7673X series, a Cat 1 bis module that supports LTE-FDD, with a maximum downlink rate of 10 Mbps and an uplink rate of 5 Mbps.
Read more...18 W monolithic microwave amplifier RFiber Solutions
Telecoms, Datacoms, Wireless, IoT
The CHA8612-QDB is a two stage, high-power amplifier operating between 7,9 and 11 GHz. The monolithic microwave amplifier can typically provide 18 W of saturated output power and 40% of power-added efficiency.
printer friendly version