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17 July 2019
 
 
Atomic Sensor Directly Detects Weak Microwaves

Atomic Sensor Directly Detects Weak Microwaves

A method developed at the U.S. National Institute of Standards and Technology can directly detect weak signals at microwave frequencies. Coherent atomic superposition in the optically pumped medium causes a parametric modulation of the polarization of a probe light field. An upper limit magnetic field component sensitivity of 1.2 pT/Hz^1/2 was achieved at about 6.835 GHz.

 
 
Power-Adaptive Far-Field Wireless Power Transfer

Power-Adaptive Far-Field Wireless Power Transfer

A new selective, tracking, power-adaptive far-field wireless power transfer system for passive wireless sensor networks incorporates features that allow transmitting and receiving nodes to cooperate. A backscattered pilot signal is used to control and focus the radiated energy. By turning sets of antenna elements on and off, the transmitter may adopt multiple states to optimize power transfer.
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RWW

Radio & Wireless Week Paper Summaries Due 24 July

Authors wishing to present papers at Radio & Wireless Week (RWW, 25-29 Jan., 2020, San Antonio, TX) should submit their paper summaries by 24 July. RWW includes five conferences focusing on the intersection of wireless communication theory, systems, circuits, and device technologies: RWS (RF/microwave), PAWR (power amps), WiSNet (sensors), SiRF (silicon technologies), and SHaRC (space technologies).
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New Frequency Step Generator in Automotive OFDM MIMO Radar

New Frequency Step Generator in Automotive OFDM MIMO Radar

The first highly integrated, fully coherent radar capable of multiple-input multiple-output (MIMO) and stepped-carrier OFDM for automotive applications reduces AD/DA requirements via an analog local oscillator (LO) capable of generating frequency steps with durations of a few microseconds, required for automotive use.
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Enter MTT-S the Student Satellite Challenge Before Sept. 1

Enter MTT-S the Student Satellite Challenge Before 1 Sept.

1 September is the deadline for entries in the MTT-Sat Challenge, a worldwide competition for teams of undergraduate and graduate students to design and build radio frequency and microwave hardware for small satellites. The most promising designs will undergo space environmental qualification testing and could earn a cubesat launch.
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Metasurface's "Extraordinary Transmission" of mmWaves

Metasurface's "Extraordinary Transmission" of mmWaves

Researchers at Japan's National Metrology Institute and Osaka University designed a hyperbolic metasurface to demonstrate "extraordinary transmission" of millimeter waves--that is, signaling with a transmittance higher than 1, so that signals passing through the surface at 34 GHz are 5 dB stronger than transmissions through empty space.
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15 October Deadline for MTT-S Fellowships/Scholarships

15 October Deadline for MTT-S Fellowships/Scholarships

The deadline for Graduate Fellowships and Undergraduate Scholarships is 15 October. Graduate awards include a US$6,000 scholarship and up to US$1,000 to travel to IMS2020. Undergraduate awards include a US$1,500 scholarship, and up US$1,000 for travel to IMS2020 or a regional MTT-S conference. Don’t miss the opportunity.
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On-Wafer and Waveguide S-Parameter Measurements

On-Wafer and Waveguide S-Parameter Measurements

In the first comparison of well-established waveguide calibrations with an equivalent on-wafer calibration, metrology engineers in the U.K. and Germany compared S-parameter measurements of electronic components on planar substrates performed with a waveguide module and conventional on-wafer probes, to investigate reproducibility at frequencies from 110 to 170 GHz.
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Enter MTT-S the Student Satellite Challenge Before Sept. 1

MTT-S's New "Fellows Search Committee" Starts Up

In the spring of 2019, MTT-S established a new Fellow Search Committee, chaired by Charles M. Jackson (c.jackson@ieee.org), to offer support to prospective nominees and nominators for IEEE Fellow, and to MTT-S members generally. (See President Dominique Schreurs's "President's Column" in the August IEEE Microwave Magazine.)
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Contactless Tuning for a 20-26.5-GHz Bandpass Filter

Contactless Tuning for a 20-26.5-GHz Bandpass Filter

Substrate integrated waveguide (SIW) k-band filters exhibit two key advantages: 1) they are based on low-cost printed circuit board technology, and 2) they employ contactless tuners without hard contacts with the evanescent-mode cavities they control. A proof-of-concept two-pole prototype showed ~3.3 dB loss, while the contactless tuner geometry reduces insertion loss by an average of 10 dB.
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Coming Up: 5G and Beyond; mmWaves & THz; RF Integration

Coming Up: 5G and Beyond; mmWaves & THz; RF Integration

Upcoming MTT-S-sponsored meetings include: Hardware and Systems for 5G and Beyond (IMC-5G, Atlanta, GA, 15-16 Aug.); Millimeter Waves and Terahertz Technologies (UCMMT, London, 20-22 Aug.); Radio-Frequency Integration (RFIT, Nanjing, 28-30 Aug.); Infrared, Millimeter, and Terahertz Waves (IRMMW-THz, Paris, 1-6 Sep.); Problems of Electromagnetic and Acoustic Wave Theory (DIPED, Lviv, Ukraine, 12-14 Sep.), and more.
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Have Something to Share With MTT-S Colleagues?

Members of the IEEE Microwave Theory and Techniques Society who want to share information about events, conferences, contests, publications, or other topics of interest to MTT-S colleagues are invited to e-mail Newsletter Working Group chair Roberto Gómez García (roberto.gomezg@uah.es) and newsletter editor Douglas McCormick (douglas.mccormick.us@ieee.org).

 
 
 
 
 


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