A highly integrated single chip 5&amp;#x2013;6 GHz front-end IC based on SiGe BiCMOS that enhances 802.11ac WLAN radio front-end designs

Huang, Chun-Wen Paul; Christainsen, Kenny; Nabokin, S.; Mirzayantz, Rafik; Allum, Justin; Chen, Andrew; Lam, Lui; McPartlin, Mike; Doherty, Mark; Vaillancourt, Bill

doi:10.1109/rfic.2015.7337746

Cited by 14 publications

(7 citation statements)

References 3 publications

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“…We performed them with a Keysight PNA-X in the bandwidth from 4 to 7 GHz, and reported the results in Figure 10. From [23,24], the paths between P3-P1 and P6-P1 and between P5-P1 and P4-P1 have to be equal, and these requirements are approximately satisfied over the whole bandwidth, notably in the targeted frequency range (5)(6). In Figure 10, we also report the insertion loss of the six-port junction, which is approximately constant and equal to 1 dB over the band of interest.…”

Section: Validation Of the Fabricated Boardsmentioning

confidence: 91%

“…For instance, home devices include smart TVs, speakers, wearables, and smart appliances, whereas technologies dedicated to security systems and to sensor and monitor traffic or weather are dedicated to the industry [3]. The communication between devices can be delegated to common standards, such as multiband WLAN [4,5], although ultra-wideband (UWB) transmissions are nowadays spreading out as an effective solution, especially for short-range communications [6][7][8][9]. Their use is defined by strict regulations, since they exploit bandwidths already used by other services and applications and, therefore, the transmitted power must be limited to avoid any interference.…”

Section: Introductionmentioning

confidence: 99%

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An Ultra-Wideband Sensing Board for Radio Frequency Front-End in IoT Transmitters

et al. 2019

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The upcoming technologies related to Internet of Things will be characterized by challenging requirements oriented toward the most efficient exploitation of the energy in electronic systems. The use of wireless communications in these devices makes this aspect particularly important, since the performance of radio transceivers is strongly dependent on the environmental conditions affecting the antenna electrical characteristics. The use of circuits capable of adapting themselves to the actual state of the environment can be a valuable solution, provided that the implemented sensing features have negligible impact on the overall performance and cost of the system. In this work, we present the design and verification of an innovative ultra-wideband sensing board to detect real-time variations of the antenna impedance in transmitters oriented to Internet of Things applications. The proposed sensing board was widely validated by means of small- and large-signal measurements carried out at microwave frequencies.

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Section: Validation Of the Fabricated Boardsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

An Ultra-Wideband Sensing Board for Radio Frequency Front-End in IoT Transmitters

et al. 2019

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“…The gain for both the Tx path and the Rx path are >31 dB and >15 dB, respectively from 4.9 to 5.9 GHz. The linearity of the transmit path is validated using an 80 MHz 256 QAM 802.11ac VHT80 signal at 433 Mbps and under dynamic mode [3]. As shown in Figure 6, with a 5.0 V supply, the transmit path can deliver Pout >19 dBm with <-40 dB dynamic EVM and 220 mA current consumption, and Pout >20 dBm at -35 dB dynamic EVM with 250 mA current consumption.…”

Section: Performancementioning

confidence: 99%

“…The switch design is based on CMOS technology with a single-pole, double-throw topology. The design is illustrated in depth in [3]. The SPDT switch schematic shown in Figure 2 is architected to support high linearity and low loss RF paths.…”

Section: Designmentioning

confidence: 99%

A Multimode SiGe BiCMOS 5–6 GHz Front-End IC that Enables 802.11ac Wave 2 and 802.11ax Wireless LAN Front-End Designs

et al. 2016

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A multimode 4.9–5.9 GHz front-end IC (FEIC) is presented, which is based on SiGe BiCMOS and realized in an 2 x 2 x 0.5 mm3 package. With a 5 V supply, the Tx chain features 31 dB gain and meets -40 dB DEVM for 1024 QAM 802.11ax tests up to 19 dBm Pout and -35 dB DEVM for 256 QAM 802.11ac tests up to 20 dBm Pout. The linearity is perfectly linearly scaled with the supply voltage and insensitive to modulation bandwidths and duty cycle. The low linearity mode with DPD can achieve the similar linear power with 40 mA current reduction. The Rx chain features <2.5 dB NF and 15 dB gain with 7 dBm IIP3 and 8 dB bypass attenuation with 25 dBm IIP3. All the unique features simplify the front-end circuit designs of complex 802.11ac and emerging future complex radios standards.

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“…The work in [4] introduced a handset PA for a wireless local area network (WLAN) application implemented with a broadband output matching network (OMN). The SiGe single-ended and differential PAs for 802.11ac/ax systems were separately reported in [5,6]. However, disadvantages of these studies lie in the deficiency of linear output power (P OUT ) and limited bandwidth for application in FeLAA DL access.…”

mentioning

confidence: 99%

Dual‐mode linearity enhanced power amplifier with wideband AM‐PM compensation for 5–6‐GHz FeLAA applications

Zhang

2021

Electronics Letters

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This letter presents a 5-6-GHz dual-mode power amplifier (PA) realized for further enhanced licensed assisted access application of downlink transmission. The output matching network with multiple harmonic traps and the wideband AM-PM compensation technique are used in the design. To achieve high linear output power with less variation in the wide frequency range, different bias voltages of the first stage PA are set for dual-mode operation. In the range 5-6 GHz, the PA delivers > 30 dBm saturated output power and reaches 24.4-24.8 dBm linear power at −35 dBc adjacent channel leakage ratio.

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A highly integrated single chip 5–6 GHz front-end IC based on SiGe BiCMOS that enhances 802.11ac WLAN radio front-end designs

Cited by 14 publications

References 3 publications

An Ultra-Wideband Sensing Board for Radio Frequency Front-End in IoT Transmitters

An Ultra-Wideband Sensing Board for Radio Frequency Front-End in IoT Transmitters

A Multimode SiGe BiCMOS 5–6 GHz Front-End IC that Enables 802.11ac Wave 2 and 802.11ax Wireless LAN Front-End Designs

Dual‐mode linearity enhanced power amplifier with wideband AM‐PM compensation for 5–6‐GHz FeLAA applications

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