UMTS/WLAN RF Receiver Studies for Reconfigurable Mobile Terminals

Circa, R.; Pienkowski, D.; Boeck, Georg; Kakerow, R.

doi:10.1515/freq.2005.59.1-2.11

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…The reconfigurable wideband mixers can approach the frequency conversion and gain variation 3–8 . In the past years, the circuits based on CMOS technology demonstrated high bandwidths up to several tens of GHz 9–17 . BJT‐based mixers are used in portable radios, where the discrete components are used and the cost of the system is low.…”

Section: Introductionmentioning

confidence: 99%

A variable gain reconfigurable mixer using gallium nitride high‐electron‐mobility transistor for wireless local area network applications

Vishnoi

Srikant

Mahapatra

et al. 2021

Int J Communication

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Summary In this paper, a design of reconfigurable frequency mixer is adapted with gallium nitride high‐electron‐mobility transistor (GaN HEMT) architecture under variable gain, different intermediate frequency (IF) bandwidth, and active/passive configuration for multidisciplinary applications supported by wireless local area network (WLAN) framework. The low band (LB) and high band (HB) are reconfigured by shunting the power between the switching and transconductance at the IF stage of the transistor. The transistor switching mode (active and passive) and logic levels are fixed at the input stage, and the input radio frequency (RF) signal is steering between the gate and drain terminals of transistors. The transistor gain is controlled by adjusting transconductance at the input RF stage and the current‐steering in transimpedance stage at the output. The simulation results show that the proposed circuit provides variable gain of 23/25 and 30/32 dB and noise figure of 14.5/12.5 at the LB and HB reconfigurable scenarios. Hence, it is suitable for transceiver optimistic functions with converge large bandwidth through shunting stages of reconfigurable frequency mixer and transconductance.

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Section: Introductionmentioning

confidence: 99%

A variable gain reconfigurable mixer using gallium nitride high‐electron‐mobility transistor for wireless local area network applications

Vishnoi

Srikant

Mahapatra

et al. 2021

Int J Communication

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Reconfigurable receiver approach for future wireless terminals

Kakerow¹,

Boeck²

2009

Analog Integr Circ Sig Process

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An overview on RF-front-end architectures and technologies for future reconfigurable mobile communication is given. A favourable solution for fourth mobile generation is an extension of traditional cellular parameters by OFDM-based systems like WLAN. Therefore, an approach for widely reconfigurable receivers considering a variety of different standards, with the example of combining WCDMA and WLAN front-end into one architecture, is presented in this paper. RF-front-end key components like low noise amplifiers, mixers, and frequency synthesizers, as well as baseband variable gain amplifiers and filters are treated, particularly with regard to reconfigurable systems.

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UMTS/WLAN RF Receiver Studies for Reconfigurable Mobile Terminals

Cited by 2 publications

References 9 publications

A variable gain reconfigurable mixer using gallium nitride high‐electron‐mobility transistor for wireless local area network applications

A variable gain reconfigurable mixer using gallium nitride high‐electron‐mobility transistor for wireless local area network applications

Reconfigurable receiver approach for future wireless terminals

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