Requirements for reconfigurable 4G front-ends

We report on GeTe-based, phase-change RF switches in a series configuration with an embedded micro heater for thermal switching. With heater parasitics reduced, these GeTe RF switches show on-state resistance of 0.12 ohm*mm and off-state capacitance of 0.12 pF/mm. The RF switch figure-of-merit is estimated to be 11 THz, which is about 15 times better than state-of-the-art silicon-on insulator switches. With 50-J.lm-wide GeTe switches, RF insertion loss was 0.25 dB and isolation was 24 dB at 20 GHz.Harmonic powers were suppressed >90 dBc at 35 dBm, meeting wireless requirements. The GeTe switches were characterized under W-CDMA signals without spectral regrowth up to 25 dBm.

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“…For instance, a 4G cellular RF front-end needs to support> 16 bands, 60 RF ports and 30 RF switches per RF port [1].…”

Section: Introductionmentioning

confidence: 99%

11 THz figure-of-merit phase-change RF switches for reconfigurable wireless front-ends

Moon

Seo

et al. 2015

2015 IEEE MTT-S International Microwave Symposium

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“…While this leads to a reduced component count, it does not result in a reduction of parallel receive paths or a real change in architecture, and therefore does not decrease the complexity. As wireless standards evolved from 2G to 4G, the number of filters external to the receiver module increased from about 6 (2G) to 45 (4G), the number of RF ports of the transceiver increased from 10 to 60, and that the number of switch ports required for signal routing increased from 6 to 30 [58], altogether increasing the transceiver's complexity and cost drastically. Electronics remain affordable due to the integration on a single chip, thanks to scaling of VSLI processes (in particular, CMOS) and innovations in RF circuits and devices [12].…”

Section: B Integrationmentioning

confidence: 99%

Wireless Receiver Architectures Towards 5G: Where Are We?

Bronckers

Roc'h²,

Smolders³

2017

IEEE Circuits Syst. Mag.

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“…WiFi, WiMAX, LTE, WiBro, HiperLAN and etc.) [15][16][17][18][19][20]. The main reason is researchers and engineers have to design a RF front-end with less expensive and smaller size than simply putting multiple RF/microwave components next to each other.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Open Stub Resonator and its Application in Dual Isolation Band of SPDT Switch Design

Algumaei

Shairi

Zakaria

et al. 2016

IJECE

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In this paper, an analysis of open stub resonator is presented and its application in dual isolation band of Single Pole Double Throw (SPDT) switch is proposed. A mathematical model and the characteristic of the bandstop of the resonator were analyzed and discussed. The open stub resonator was implemented using the microstrip transmission line and able to switch between bandstop and allpass responses. Frequency bands of 2.3 and 3.5 GHz were chosen to demonstrate the dual isolation band in the switch design. The performance results of the SPDT switch showed that the isolation was greater than 30 dB, return loss was greater than 10 dB and insertion loss less than 2 dB at the center resonant frequency of 2.3 and 3.5 GHz. The potential application of the proposed dual isolation band of SPDT switch is for multi band RF front-end system such as WiMAX, LTE, WiFi and HyperLAN. Keyword:Bandstop to allpass Open stub resonator RF/Microwave switch SPDT switch Transmission line stub

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Requirements for reconfigurable 4G front-ends

Cited by 39 publications

References 8 publications

11 THz figure-of-merit phase-change RF switches for reconfigurable wireless front-ends

11 THz figure-of-merit phase-change RF switches for reconfigurable wireless front-ends

Wireless Receiver Architectures Towards 5G: Where Are We?

Analysis of Open Stub Resonator and its Application in Dual Isolation Band of SPDT Switch Design

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