RF Front-End Tunability for LTE Handset Applications

Whatley, Richard; Ranta, Tero; Kelly, D.

doi:10.1109/csics.2010.5619696

Cited by 13 publications

(4 citation statements)

References 5 publications

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“…6 after processing the input data the output signals rf_sda_o and rf_clk_o act in accordance with the RFFE Specification,i.e. the high bits in the first and low in the after [6,7].…”

Section: Simulation Resultsmentioning

confidence: 99%

“…When the slave doesn't work it is in IDLE state,that means low power consumption.When device slave receives the start command from master device then it enter the START state.In the START state,the device will separate the highest four bits from the transmitted data,using which to determine which slave devices the master choose.If the device address are correct,that's the desired slave device,then the chosen one will enter ACTIVE state,or the address judgment is wrong then the slave will return to IDLE state waiting for the start command from the master.While in the ACTIVE state,the slave device process the received serial data and get the correct address and data as well as use parity check the received data.After receiving data,the device enter SHUT_DOWN state.Then slave device will return to IDLE state again when it detect end command sent from the master [6].…”

mentioning

confidence: 99%

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ASIC Designing and Implementation of RFFE

Shi

Zheng

2013

AMM

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MIPI RF Frond-End Control Interface (RFFE) is a specification of a bus interface specifically designed for the needs of current and future mobile wireless systems to control the slave devices in an RF front-end.This new technique has so many advantages over I2C and SPI interface.So in this article I give an overview of MIPI RFFE and the stratege to realize the IP for RFFE,finally I describe the results getting from simulating the IP through VCS.It is convenient to implement and control the specified IP,and which can be used wisely in so much fields.

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“…6 after processing the input data the output signals rf_sda_o and rf_clk_o act in accordance with the RFFE Specification,i.e. the high bits in the first and low in the after [6,7].…”

Section: Simulation Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

ASIC Designing and Implementation of RFFE

Shi

Zheng

2013

AMM

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“…Depending on the vendo chosen there may be individual power amplifiers mobile handsets to mental influences, n cycles. Several ket [1][2][3][4][5][6]. As a new impact of tunable f modern radios is ont end of modern equency bands of ny cases, there is a l countries.…”

Section: Handset Rf Front Endsmentioning

confidence: 99%

Integrated tunable systems for scalable 4G radios

Morris¹,

Steel²

2013

2013 IEEE MTT-S International Microwave Symposium Digest (MTT)

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Tunable elements have been de handsets since 2011 to improve radiate compensate for environmental influences on an shrink antenna volumes and shorten design cy challenge facing the RF front end in modern proliferation of frequency bands for LTE syste global roaming but also for local services. This expansion in the quantity of filters and related has an impact on overall performance, parti and cost. We present details on development fully tunable front ends that will enable highly and compact radio implementations in future m Index Terms -tunable circuits and devices RLC circuits, radio-frequency micro-electro-me

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“…Frequency agile antenna is not a new concept. Two different techniques are distinguished: the tunable impedance matching network (TMN) [2] and the Aperture Tuning [3]. The former aims to match the antenna input impedance which has a high Q-factor in the case of electrically small antenna (ESA).…”

Section: Introductionmentioning

confidence: 99%

Frequency Reconfigurable Dual Narrow Band Antenna matched on the Low Band LTE FDD Physical Layer

Bories¹,

Sarrazin²,

Giry³

2018

12th European Conference on Antennas and Propagation (EuCAP 2018)

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The upcoming widening of the LTE frequency Low Band (LB) towards 600 MHz imposes a strong miniaturization effort to the smartphone antenna which can no more maintain its radiation efficiency performance over the full 600-960 MHz range. To overcome this issue, the design strategy consists in matching the antenna only where it is instantaneously used. Thus, based on the FDD spectrum usage, the proposed antenna presents two narrow bands that can be reconfigured independently anywhere in the whole LTE LB. The proposed design takes into account current limitations of the tunable capacitor (low Q factor). The measured total efficiency increases with frequency from 11% at 617 MHz to 60% at 960 MHz.

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RF Front-End Tunability for LTE Handset Applications

Cited by 13 publications

References 5 publications

ASIC Designing and Implementation of RFFE

ASIC Designing and Implementation of RFFE

Integrated tunable systems for scalable 4G radios

Frequency Reconfigurable Dual Narrow Band Antenna matched on the Low Band LTE FDD Physical Layer

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