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This paper describes a fully integrated 65nm CMOS 2×2 MIMO multi-band LTE RF transceiver for small cell (femtocell) base stations with frequency support from 680MHz to 6GHz. The transceiver features highly integrated RF front-ends including single-ended LNAs and drive amplifiers with total 32 individual RF I/O pins. The receiver shows NF of 2.9∼5.2dB, HP3 of >-2dBm, and HP2 of >48dBm over the...
This work presents the design of a multi-standard transceiver for the use in the industrial science medical (ISM) bands up to 10 GHz as well as in the 5.2 GHz wireless local area network (WLAN) band. The transceiver architecture shares the IQ receive path for communication and local positioning and includes also a transmitter for local positioning. The reconfigurable receiver consists of an actively...
A novel high-data-rate low-power spectrum-efficient 60GHz Bi-Phase-On-Off-Keying (BPOOK) transceiver is presented for indoor short-range IoT application targeting the common 60GHz spectrum mask used in IEEE 802.11ad/ WiGig standards. By employing bi-phase encoder and double-balanced mixer, the BPOOK transmitter spectrum is efficient to be compliant with 2-channel bonding spectrum mask. The proposed...
An IEEE 802.11ah-compliant RF transceiver with a direct-conversion receiver and a fully-digital polar transmitter is presented. For the receiver, a current-mode RF front-end covers the mandatory modes worldwide from 755MHz to 928MHz. The digitally-assisted analog baseband achieves variable gains and bandwidths with an automatic gain/DC-offset calibration. Implemented in 40nm CMOS with 1V supply, this...
The 60GHz carrier with 9GHz bandwidth enables ultra-high-speed wireless communication in recent years [1–4]. To meet the demand from rapidly-increasing data traffic, the IEEE802.11ay standard is one of the most promising candidates aiming for 100Gb/s data-rate. Both higher-order digital modulation such as 128QAM and channel bonding at 60GHz are considered to be used in the IEEE802.11ay standard. However,...
The demand of higher data-rates for mobile communication has driven the LTE standard to adopt methods to increase channel bandwidth by Carrier Aggregation (CA), this is known as LTE-Advanced (LTE-A). Due to regional spectrum allocation, these carriers can be inter-band, or intra-band with contiguous (CCA) or non-contiguous (NCCA) channels. The band combinations create a major challenge for an LTE-A...
A low-power and small-area 60-GHz CMOS transmitter with oscillator pulling mitigation is presented. The subharmonic injection locking technique for the suppression of pulling effects is analyzed and demonstrated. The transmitter fabricated in a 65nm CMOS process achieves 7.04-Gb/s data rate with an EVM performance of −25 dB in 16QAM. The whole transmitter consumes 210 mW from a 1.2-V supply and occupies...
Co-time and co-frequency full-duplex (CCFD) is an effective technology with promising application prospect in improving the spectrum efficiency for wireless communication. However, it was viewed as impossible not too long ago for its sever self-interference. In this work, a novel intermediate frequency self-interference suppression solution with a symmetrical reconstruction path is proposed, based...
Modern frequency division duplex radio frequency transceivers experience transmitter-to-receiver leakage due to the limited isolation of the duplexer. In Long Term Evolution-Advanced (LTE-A) carrier aggregation receivers the coupling between the local oscillators creates harmonics on the chip which can lead to the downconversion of this leakage signal to the receive (Rx) baseband. Thereby, this so-called...
In this paper, an active mixing UHF-Band 8 channels digital array module is introduced. Eight independent RF and digital transceiving channels are integrated. three-dimensional layout, standardization and modularization design are adopted. The power supply is only 28 V, signal control and data transmission go through optical fiber. Good measured results are obtained.
This paper presents a 56Gb/s 16-QAM 65nm CMOS transceiver using a W-band carrier. Two wideband IF signals are up- and downconverted simultaneously with 68GHz and 102GHz carriers. The transceiver achieves 56Gb/s data-rate with TX-to-RX EVM of −16.5dB within 0.1m distance. The transceiver consumes 260mW and 300mW from a 1V supply in TX and RX modes, respectively. This results in 10pJ/bit efficiency,...
To support increased device functionality and higher data-rates in LTE-enabled systems, while improving user experience and usage time, there is a need to reduce RFIC size and power consumption without degrading performance, while maintaining backward compatibility with legacy 2G/3G systems [1]. This paper introduces a 13mm2, 40nm CMOS 2G/HSPA+/TDSCDMA/UE cat. 4 transceiver that consumes 36/65mA battery-referenced...
We present a novel low-cost built-in test approach for the Error Vector Magnitude (EVM) performance of RF transceivers. We rely on built-in sensors to extract low-cost measurements that can be used thereafter to predict implicitly the EVM. The key attribute of the sensors is that they are non-intrusive, that is, they are not electrically connected to the RF transceiver. Hence, the proposed built-in...
This paper presents a novel 90 GHz band RF transceiver using polarization-division duplex (PDD) technology. A PDD architecture is used for full-duplex communication in the single band. The RF transceiver can deliver 6 Gbps through six channels with a bandwidth of 3 GHz. The channel bandwidth is 500 MHz. A IF combining structure is used for multi-channel. To implement the system, a fourth-harmonically...
CubeSat is a class of popular pico-satellites that is limited in size to a standard 10×10×10cm unit. In this paper, we present a functioning High Data Rate (HDR) 2.4 GHz radio for use on a CubeSat. Current CubeSats suffer from low data rate radios and this severely limits their functionality. In this design, the operating constraints of a CubeSat have been addressed. Namely, power, wide variations...
This paper introduces flexible radio techniques inside integrated circuits in order to tackle the interconnect issue for many-core chips. We propose to take benefits from OFDMA for a RF-interconnect associated to a carrier allocation policy and adaptive modulation. A 20 GHz bandwidth is shared between 32 tile sets made of 32 tiles of 4 cores each, for a 4096 cores chip. We adopt a cognitive radio...
A wireless continuous transmission and reception of signals from 1GHz up to 6GHz is shown. Core functionality of a universal multiband multistandard wideband reconfigurable transceiver is demonstrated. Extension of the frequency range by means of a mixing stage is combined with a wideband signal processor from the baseband up to the RF and vice versa. This concept exploiting the proposed platform...
Post-silicon validation of RF/mixed-signal circuits is challenging due to the need to excite all possible operational modes of the DUT in order to establish equivalence between its specified and observed behaviors and to ensure that the DUT does not produce any unexpected behaviors that can lead to system failure. In this research, we first develop a methodology for determining if the DUT contains...
In this paper the design of a high-data-rate transceiver in the 60 GHz band using a QPSK modulation scheme is presented. The channel bandwidth is 1 GHz in order to achieve gigabit Ethernet wireless transmission at 1km distance. The receiver has 66 db of linear controlled gain with a noise figure of 8 dB. The transmitter is capable of delivering −12 dBm of power at the external power amplifier. Both...
The future of cellular radio ICs lies in the integration of an ever-increasing number of bands and channel bandwidths. This paper presents a transceiver together with the associated discrete front-end components. The transceiver supports 4 EDGE bands and 9 WCDMA bands (l-VI and Vlll-X), while the radio can be configured to simultaneously support the 4 EDGE bands and up to 5 WCDMA bands: 3 high bands...
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