Yunqiu Wu
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View article: Magnetic field vector detection at the millitesla level using a YIG microcavity optical sensor
Magnetic field vector detection at the millitesla level using a YIG microcavity optical sensor Open
Millitesla-level magnetic field vector detection based on a yttrium iron garnet (YIG) microcavity optical sensor with a quality factor of ∼10 5 is proposed and demonstrated. The sensor leverages external magnetic field variations to change…
An event‐driven model of fractional‐<span>N CPPLL</span>based<span>FMCW</span>synthesizers Open
This paper proposes an improved event‐driven (ED) model to improve the simulation efficiency of a mixed‐signal charge‐pump phase locked loop (CP‐PLL) design for a frequency‐modulated continuous‐wave (FMCW) chirp generation. The improvement…
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Issue information Open
A multiband quasi-Yagi antenna using stepped driver
A CMOS 4‐Element Ku‐Band Phased‐Array Transceiver Open
This paper presents a Ku-Band fully differential 4-element phased-array transceiver using a standard 180-nm CMOS process. Each transceiver is integrated with a 5-bit phase shifter and 4-bit attenuator for high-resolution radiation manipula…
View article: A 39 GHz Dual-Channel Transceiver Chipset with an Advanced LTCC Package for 5G Multi-Beam MIMO Systems
A 39 GHz Dual-Channel Transceiver Chipset with an Advanced LTCC Package for 5G Multi-Beam MIMO Systems Open
This article presents a 39 GHz transceiver front-end chipset for 5G multi-input multi-output (MIMO) applications. Each chip includes two variable-gain frequency-conversion channels and can support two simultaneous independent beams, and th…
Design of 18–40 GHz GaN reactive matching power amplifiers using one‐order and two‐order synthesised transformer networks Open
A reactive matching (RM) power amplifier (PA) can achieve higher efficiency than a distributed amplifier (DA). In this paper, RM PAs that cover 18–40 GHz are proposed by using one‐order and two‐order synthesised transformer networks (STNs)…
A Ku-Band 6-Bit Vector-Sum Phase Shifter With Half-Quadrant Control Technique Open
This paper presents a 6-bit vector-sum phase shifter with half-quadrant control technique for Ku-band phased arrays. In this paper, the gain and phase symmetry in each quadrant is studied. Based on the gain and phase symmetry in vector-sum…
Multimode orbital angular momentum antenna based on four‐arm planar spiral Open
An orbital angular momentum (OAM) antenna based on four‐arm planar spiral for multiple OAM modes generation is proposed in this Letter. There are four OAM modes generated by employing different phase feeding arrangements for the four ports…
Differential low‐loss T/R switch for phase array application in 0.18‐μm CMOS technology Open
Here, a Ku‐band transmit/receive (T/R) differential switch using the 180‐nm CMOS process is presented. The differential structure method is chosen to realise easy integration with other RF components. From 15–18 GHz, the measured insertion…
An Improved Large Signal Model for 0.1 μm AlGaN/GaN High Electron Mobility Transistors (HEMTs) Process and Its Applications in Practical Monolithic Microwave Integrated Circuit (MMIC) Design in W band Open
An improved empirical large signal model for 0.1 µm AlGaN/GaN high electron mobility transistor (HEMT) process is proposed in this paper. The short channel effect including the drain induced barrier lowering (DIBL) effect and channel lengt…
A package-level wideband driver amplifier with 134% fractional bandwidth Open
A wideband package-level driver amplifier in 65 nm CMOS technology is presented in this paper.The inductor-less design is adopted for the inter-stage connection to achieve wide working bandwidth.Bonding wires for the package are modelled a…
A 24 GHz enhanced neutralized cascode LNA with 4.7 dB NF and 19.8 dB gain Open
This paper presents a two-stage low noise amplifier (LNA) for 24 GHz automotive radar applications. Compared with traditional common source (CS) stage, the neutralized topology is used to improve the gain and reverse isolation in the first…
A 39 GHz broadband high-isolation CMOS mixer using magnetic-coupling CG Gm stage for 5G applications Open
This paper presents a 39 GHz broadband high-isolation mixer for 5G applications in 65 nm CMOS process. By adopting a common-gate (CG) gm stage with magnetic coupling, the mixer obtains a wide RF bandwidth without extra input matching compo…
A 62-90 GHz High Linearity and Low Noise CMOS Mixer Using Transformer-Coupling Cascode Topology Open
This paper presents a high linearity and low noise mixer for millimeter-wave applications in 65-nm CMOS process. A noise-reduction transformer with harmonic suppression is utilized and inserted between transconductance stage and switch sta…
A 5-Gb/s 66 dB CMOS Variable-Gain Amplifier With Reconfigurable DC-Offset Cancellation for Multi-Standard Applications Open
This paper proposes a variable gain amplifier (VGA) with reconfigurable DC-offset cancellation (DCOC) for multi-standard applications. In this design, a cell-based design method and some bandwidth extension technologies are adopted to achi…
An asynchronous dual switch envelope tracking supply modulator with 86% efficiency Open
An asynchronous dual-switch hybrid envelope tracking (ET) supply modulator is proposed in this paper. Two high-efficiency switching amplifiers (SA) working at different speed are adopted to reduce the current supplied by the linear amplifi…
A CMOS Ku-band receiver chain for phased array system Open
A Ku-band receiver chain for phased array system is presented in this paper. It is composed of three LNAs, a 4-bit attenuator and a 5-bit phase shifter. This design is fabricated in 180-nm standard CMOS with a chip area of 3 mm × 0.8 mm. T…
A CMOS K-Band 6-bit Attenuator With Low Phase Imbalance for Phased Array Applications Open
A 6-bit digital-controlled attenuator with low phase imbalance for a K-band phased array system is presented in this paper. To decrease the insertion phase difference, the proposed design adopts a phase correction capacitor in the shunt br…
An on-chip antenna integrated with a transceiver in 0.18-µm CMOS technology Open
This paper presents an on-chip antenna integrated with a Ku-band transceiver using a standard 0.18-µm CMOS process. An off-chip guard ring is used to improve the gain of the antenna. As the guard ring is implemented on the test carrier boa…
A Compact Ka-Band Active Integrated Antenna With a GaAs Amplifier in a Ceramic Package Open
This letter presents the design of a Ka-band active integrated antenna in package (AIAiP). A monolithic microwave integrated circuit amplifier based on the GaAs process and a compact patch antenna based on the printed circuit board process…
Analysis and Design of Inductorless Wideband Low-Noise Amplifier With Noise Cancellation Technique Open
This paper deals with the fabrication of an inductorless wideband low-noise amplifier (LNA). The LNA includes two branches in parallel: a common-source (CS) path and a common-gate (CG) path. The CS path is responsible for providing enough …
High-Isolation CMOS T/R Switch Design Using a Two-Stage Equivalent Transmission Line Structure Open
A fully integrated Ku-band transmit/receive (T/R) switch based on a two-stage equivalent transmission line structure has been designed using a 180-nm complementary metal-oxide-semiconductor (CMOS) process. An analysis shows a relation betw…
Analysis and Design of CMOS Doherty Power Amplifier Based on Voltage Combining Method Open
The impedance at the each input terminal of paper presents a voltage combining Doherty power amplifier in a standard 180-nm CMOS process. This Doherty PA uses a series combining transformer (SCT) to combine the output power and realize the…