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Cellonics Frequency Translation:

The spectrum is easily fitted into the FCC maskNo pulse spreadingNo LO-RF leakage associated with it(make full use of FCC allowed power density)

No oscillator required => low power consumption(Power consumed approx. 1/5 of that of Up-conversion)

CELLONICSELEMENT

OUTPUT

UWBUWB Tx Tx Methods for Methods for Multi Multi --band band

Monocycle => UnattractiveUp-conversionCellonics Frequency Translation

3.1 Freq. (GHz)10.6

P o w e r

500 MHz

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Up-Conversion:

Use a number of oscillators=> high power consumption

OR

Use PLL

=> Fast switching PLL (in order of few ns)

VCO PLL Control

F1F1

F1

F1

+

Cellonics Frequency Translation:

Use a number of Cellonics Elements tuned at differentcentre frequencies=> low power consumption is maintained,

implementation remains simple(One Cellonics Element consists of only a few components)

+

TUNNELDIODE

TUNNELDIODE

TUNNELDIODE

TUNNELDIODE

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Quick Review Quick Review

Monocycle Up-ConversionCellonicsFrequency

Translation

Remarks

Spectrum

No pulse spread Pulse spreadlimits PRF

No LO-RFleakage

LO-RF leakagereduces rangedue to power emission limit

Applicable inSingle Band Applicable inMulti-band ?

(challenging)

(simple)

CellonicsCellonics UWB Receiver UWB Receiver Correlator:

Challenge:Require high precision pulse delay mechanismto achieve good synchronization

T

LPF

Amplifier/Buffer

T

T

'1' '0' ' 1'

T

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