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IEEE Microwave and Wireless Components Letters
IF
2.37
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5008
Papers 5061
1 page of 507 pages (5,061 results)
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#1Qun Li (University of Electronic Science and Technology of China)H-Index: 5
#2Xiong Chen (University of Electronic Science and Technology of China)
Last.Tao Yang (University of Electronic Science and Technology of China)H-Index: 13
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This letter presents a varactor-based tunable bandstop filter (BSF) using distributed coupling microstrip resonators with the capacitive terminal. Each distributed coupling microstrip resonator consists of a coupling microstrip line, a varactor, and a capacitive terminal which is a floating pad connected to the cathode of the varactor. The capacitive terminal serves not only as a bias pad for the control voltage but also as an intrinsic capacitive path to ground. Compared to the conventional ind...
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#1Jelena Radic (University of Novi Sad)H-Index: 3
#2Miodrag Brkic (University of Novi Sad)H-Index: 2
Last.Horst Zimmermann (TU Wien: Vienna University of Technology)H-Index: 22
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An ultralow-power and low-complexity impulse radio ultrawideband (IR-UWB) transmitter (TX) is fabricated in the low-cost 180-nm United Microelectronics Corporation (UMC) CMOS technology. The TX offers control of the power spectral density (PSD) by using a tunable pulse generator and a controllable switched oscillator. It supports on-off keying (OOK) coding and occupies a total die area of 0.35 mm2. The measured results show the transmitter output amplitude of 130 mVp-p with the pulse width of 1....
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A 915-MHz binary frequency-shift keying (BFSK) transmitter is proposed in this letter. The proposed transmitter architecture allows relaxing the frequency-tuning requirement of the conventional Internet of Things transceiver by the frequency-tripling signal-path topology. The tuning-range requirement is significantly improved down to 4% with the proposed signaling scheme, and this results in the ultralow-power synthesizer implementation. The proposed frequency tripler provides good spur rejectio...
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#1Naira Jguirim (CNRS: Centre national de la recherche scientifique)
#2D. Passerieux (CNRS: Centre national de la recherche scientifique)H-Index: 1
Last.Pierre Blondy (CNRS: Centre national de la recherche scientifique)H-Index: 24
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This letter presents the design and fabrication of a 287-GHz resonator and a bandpass filter. The fabrication is conducted using an additive microfabrication process, based on successive photolithography and metal electroplating steps. This process has allowed the fabrication of a single-cavity resonator and a 3.5% relative bandwidth two-pole bandpass filter. The cavity has a measured unloaded Qof 137, and the filter has a measured loss of 4.6 dB and matching better than 20 dB in very good ag...
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#1Xiaoming Chen (Xi'an Jiaotong University)H-Index: 17
#2Wei Xue (Xi'an Jiaotong University)H-Index: 1
Last.Wei E. I. Sha (ZJU: Zhejiang University)H-Index: 25
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Previous studies on orbital angular momentum (OAM) communication mainly considered line-of-sight (LOS) environments. In this letter, however, it is found that OAM communication with high-order modulation can be achieved in highly reverberant environments by combining the OAM multiplexing with a spatial equalizer. The OAM multiplexing exhibits comparable performance of the conventional multiple-input-multiple-output (MIMO) system.
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#1Cuiping Yu (Beijing University of Posts and Telecommunications)H-Index: 12
#2Ke Tang (Beijing University of Posts and Telecommunications)
Last.Yuanan Liu (Beijing University of Posts and Telecommunications)H-Index: 29
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In this letter, an adaptive basis direct learning (DL) method was proposed for the linearization of power amplifiers (PAs). The proposed method can reduce the complexity and improve the stability performance of DL digital predistortion (DPD) structure. The experimental results show that the proposed method is more stable and can achieve improvement in normalized mean square error (NMSE) and adjacent channel power ratios (ACPRs) compared with the DL. In addition, the proposed method reduces the n...
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#1A. V. Zakharov (National Technical University)H-Index: 5
#2Sergii A. Rozenko (National Technical University)H-Index: 1
Last.Michael Ilchenko (National Technical University)H-Index: 2
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In this letter, new patterns of symmetric trisection bandpass filter (BPF) with reflection-type half-wave resonators, mixed cross-coupling, and different paths for signal propagation are discussed. The various coordinates of the conductive connection of loads to the end half-wave resonators are used in the filter. This leads to different signal paths from input to output of the filter. Due to the various connections of loads and mixed cross-coupling, satisfying condition K_{13} = 0, the same ...
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#1U. Alakusu (U of T: University of Toronto)H-Index: 1
#2M. Sadegh Dadash (U of T: University of Toronto)H-Index: 3
Last.Sorin P. Voinigescu (U of T: University of Toronto)H-Index: 40
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A 240-GHz direct conversion I–Q receiver with 74-GHz RF bandwidth is reported. It features a mixer-first architecture with fundamental local oscillator (LO)-frequency Gilbert-cell downconversion mixers, variable-gain baseband amplifiers, and a 240-GHz LO source, making it the first fully integrated 240-GHz I–Q receiver. With a phase noise of −82 dBc/Hz at 1-MHz offset, the LO source has a 27-GHz tuning range and consists of a 120-GHz voltage-controlled oscillator (VCO), a frequency doubler, and ...
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Top fields of study
Electrical engineering
Optics
Microstrip
Band-pass filter
Electronic engineering
Mathematics
Bandwidth (signal processing)