A Highly Linear 28GHz 16-Element Phased-Array Receiver with Wide Gain Control for 5G NR Application

A 39-GHz CMOS Bidirectional Doherty Phased- Array Beamformer Using Shared-LUT DPD With Inter-Element Mismatch Compensation Technique for 5G Base Station

“…Limited by the drastically increased free-space path loss (FSPL), the beamforming technique based on large-scale phased arrays is mandatory to reach a better signal-to-noise ratio (SNR) over long-distance communication. Widespread studies have been focused on the 5G mm-wave phased arrays in the past few years [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23]. The high-performance phased-array system should feature high effective isotropic radiated power (EIRP) for maintaining the link budget and compact system design to adapt to the narrowed antenna pitch.…”

A 23–40-GHz Phased-Array Receiver Using 14-Bit Phase-Gain Manager and Wideband Noise-Canceling LNA

“…T HE ever-increasing demands on the high data rate and high signal-to-noise ratio accelerate the development of high-performance millimeter-wave (mm-wave) phased-array systems [1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28]. Recently, phased-array receivers (RXs) operated at 24/28 GHz [1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14] and 37/39 GHz [15], [16], [17], [18], [19], [20] bands are reported for 5G NR application. Meanwhile, the wideband phased-array RXs…”

“…In some applications, large-scale array with high beam-scanning accuracy is used to build a long-range communication link (e.g., backhaul, drone, and satellite), which requires the RX to provide high phase resolution [2], [8]. Meanwhile, the receiving power is changed rapidly in some short-range applications [e.g., picocell, handheld devices, and in-door virtual reality/augmented reality (VR/AR)], while the RX should provide high gaintuning capability to improve the dynamic range in these cases [4], [15]. The conventional phased-array RX achieves the phase-shifting and gain-tuning function by the separated phase shifter and variable gain amplifier (VGA)/attenuator.…”

A Reflectionless Receiver With Absorptive IF Amplifier and Dual-Path Noise-Canceling LNA

“…As the key sub-system in the wideband wireless systems, the receiver (RX) should be developed with high dynamic range and high signal quality within a wide operating frequency range. Therefore, multiple technologies, such as linearity improvement [1], [2] and noise canceling [3], [4], are developed and introduced to the wideband RX with sub-circuit designs. However, the ever-developing of modern and coming wireless applications (e.g., 5G, vehicles, and intelligent manufacturing) occupies the spectrum and makes the wideband RX operate in a complicated electromagnetic (EM) environment, where multiple in-band RF signals (i.e., desired signal, imaging signals, and blockers) are received by the RX in practical applications.…”