A microwave power module (MPM) is a microwave device used to amplify radio frequency signals to high power levels. It is a hybrid combination of solid-state and vacuum tube electronics, which encloses a solid-state driver amplifier (SSPA), traveling wave tube amplifier (TWTA) and electronic power conditioning (EPC) modules into a single unit.[1] Their average output power capability falls between that of solid-state power amplifiers (SSPAs) and dedicated Traveling Wave Tube (TWT) amplifiers. They may be applied wherever high power microwave amplification is required, and space is at a premium. They are available in various frequency ranges, from S band up to W band. Typical output power at Ku band ranges from 20W to 1 kW.
The microwave power module concept was designed for use in active phased array antennas, where their compact size permits packing a large number of modules into the radiating face of the antenna. The concept was explored in detail by the 1989 Microwave Power Module Panel, supported by the US Naval Research Laboratory. While the eventual goal was to design a power module with a cross section as small as a half square inch, most MPMs today are larger, and suitable only for line arrays, partially distributed arrays and single-module applications.
Typical specifications
Microwave power modules are available at various frequencies, from S band up to W band.[2] Both CW and pulsed MPMs are available, the pulsed MPMs having a wide duty cycle range. Power levels range from less than 20W to over 1 kW. MPMs are light-weight compared to traditional TWTAs, and the power supply requirements are typically low-voltage DC (28–270 volts DC).
Construction
Block diagram of an MPM
A microwave power module consists of a solid state power amplifier, which drives a vacuum power booster, typically a traveling wave tube. The high voltage power supply required by the TWT is provided by an electronic power conditioner. In pulsed-mode MPMs, the power conditioner provides a pulsed high voltage that is triggered by a trigger input. MPMs also include a microcontroller, which is responsible for controlling the operation of the module, such as making sure the various power supply voltages come up in the appropriate sequence to prevent damage to the TWT. It also reports the module status, including the various voltages, currents and temperatures.
Applications
Microwave power modules are used in
Active phased array antennas
Radar transmitters where relatively low power, but long pulse widths are needed (such as Synthetic Aperture Radars)
Klystron – A device for amplifying or generating microwaves (with greater precision and control than is available from a magnetron)
References
^Abrams Jr, R.H.; Parker, R.K. (1993). "Introduction to the MPM: What it is and where it might fit". 1993 IEEE MTT-S International Microwave Symposium Digest. pp. 107–110. doi:10.1109/MWSYM.1993.276932. ISBN978-0-7803-1209-8. S2CID 109251361.
^Smith, C.R.; Armstrong, C.M.; Duthie, J. (1999). "The microwave power module: a versatile RF building block for high-power transmitters". Proceedings of the IEEE. 87 (5): 717–737. doi:10.1109/5.757252. ISSN 0018-9219.
External links
Microwave Power Modules - Product information
August 24, 2023
microwave, power, module, microwave, power, module, microwave, device, used, amplify, radio, frequency, signals, high, power, levels, hybrid, combination, solid, state, vacuum, tube, electronics, which, encloses, solid, state, driver, amplifier, sspa, travelin. A microwave power module MPM is a microwave device used to amplify radio frequency signals to high power levels It is a hybrid combination of solid state and vacuum tube electronics which encloses a solid state driver amplifier SSPA traveling wave tube amplifier TWTA and electronic power conditioning EPC modules into a single unit 1 Their average output power capability falls between that of solid state power amplifiers SSPAs and dedicated Traveling Wave Tube TWT amplifiers They may be applied wherever high power microwave amplification is required and space is at a premium They are available in various frequency ranges from S band up to W band Typical output power at Ku band ranges from 20W to 1 kW Contents 1 History 2 Typical specifications 3 Construction 4 Applications 5 See also 6 References 7 External linksHistory EditThe microwave power module concept was designed for use in active phased array antennas where their compact size permits packing a large number of modules into the radiating face of the antenna The concept was explored in detail by the 1989 Microwave Power Module Panel supported by the US Naval Research Laboratory While the eventual goal was to design a power module with a cross section as small as a half square inch most MPMs today are larger and suitable only for line arrays partially distributed arrays and single module applications Typical specifications EditMicrowave power modules are available at various frequencies from S band up to W band 2 Both CW and pulsed MPMs are available the pulsed MPMs having a wide duty cycle range Power levels range from less than 20W to over 1 kW MPMs are light weight compared to traditional TWTAs and the power supply requirements are typically low voltage DC 28 270 volts DC Construction Edit Block diagram of an MPMA microwave power module consists of a solid state power amplifier which drives a vacuum power booster typically a traveling wave tube The high voltage power supply required by the TWT is provided by an electronic power conditioner In pulsed mode MPMs the power conditioner provides a pulsed high voltage that is triggered by a trigger input MPMs also include a microcontroller which is responsible for controlling the operation of the module such as making sure the various power supply voltages come up in the appropriate sequence to prevent damage to the TWT It also reports the module status including the various voltages currents and temperatures Applications EditMicrowave power modules are used in Active phased array antennas Radar transmitters where relatively low power but long pulse widths are needed such as Synthetic Aperture Radars Commercial and military satellite communicationsSee also EditTraveling wave tube Microwaves Klystron A device for amplifying or generating microwaves with greater precision and control than is available from a magnetron References Edit Abrams Jr R H Parker R K 1993 Introduction to the MPM What it is and where it might fit 1993 IEEE MTT S International Microwave Symposium Digest pp 107 110 doi 10 1109 MWSYM 1993 276932 ISBN 978 0 7803 1209 8 S2CID 109251361 Smith C R Armstrong C M Duthie J 1999 The microwave power module a versatile RF building block for high power transmitters Proceedings of the IEEE 87 5 717 737 doi 10 1109 5 757252 ISSN 0018 9219 External links EditFlash animation showing the operation of a microwave power module MPM and its internal construction Microwave Power Modules Product information Retrieved from https en wikipedia org w index php title Microwave power module amp oldid 1166525290, wikipedia, wiki, book, books, library,
