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A 240-GHz 4-TX 4-RX 2-D-MIMO FMCW Radar Transceiver in 130-nm SiGe BiCMOS
A 240-GHz 4-transmitter (TX) 4-receiver (RX) 2-D multiple-input–multiple-output (MIMO) frequency-modulated continuous-wave (FMCW) radar transceiver was designed in a 130-nm SiGe bipolar CMOS (BiCMOS) technology with fT/fmax of 250/370 GHz using patch antennas on a single 4.032×4.032 mm2 chip. The differential RF inputs, located at the emitters of the direct conversion mixer quad transistors of each…
Tunable Wideband High-Order Active Analog Delays With High Delay-Bandwidth Product
This letter describes analog delays based on wideband, high-order, tunable active all-pass filters (APFs) with poles and zeros prescribed by the Padé approximation. The number of inductors in the n th-order APF does not exceed ⌊n/2⌋ for a compact area, low insertion loss, and wide bandwidth. Delay tuning is accomplished via two control lines. The…
A K-/Ka-Band Diplexer-Integrated Simplified Rotary Joint Using Gap Waveguide Technology
This letter introduces a new K-/Ka -band diplexer-integrated simplified rotary joint. The stator and rotor are arranged to construct a guided-wave structure based on gap waveguide (GW) technology, which supports a stable rotation without leakage. A bandpass filter (lower band channel) and a two-path high-pass filter (upper band channel) are designed on the stator to…
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The IEEE Microwave and Wireless Technology Letters (MWTL) (formerly IEEE Microwave and Wireless Components Letters (MWCL)) is published monthly with the purpose of providing short papers (up to 4 pages; 3 pages of text plus up to 1 page of references) of original and significant contributions relevant to all aspects of microwave/millimeter-wave technology, with emphasis on devices, components, circuits, guided wave structures, systems and applications covering the frequency spectrum from microwave and beyond, including submillimeter-waves and infrared.

The MWTL is the preeminent publication of short papers concerning RF and microwave technology, with an acceptance rate of 25%. The median publishing time from submission to publication is 16 weeks.

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IEEE Microwave and Wireless Technology Letters
August 2023 Issue