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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [ Implementation feasibility of SSA-UWB pulse wavelets ] Date Submitted: [ January 13, 2004 ]

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Presentation Transcript
slide1

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Submission Title: [Implementation feasibility of SSA-UWB pulse wavelets]

Date Submitted: [January 13, 2004]

Source: [Honggang Zhang, Kamya Y. Yazdandoost, Kenichi Takizawa, Iwao Nishiyama, Keren Li, Yuko Rikuta, Tetsuya Yasui, Ryuji Kohno ] Company [ (1) Communications Research Laboratory (CRL), (2) CRL-UWB Consortium ]

Connector’s Address [3-4, Hikarino-oka, Yokosuka, 239-0847, Japan]

Voice:[+81-468-47-5101], FAX: [+81-468-47-5431],

E-Mail: [honggang@crl.go.jp, yazdandoost@crl.go.jp, takizawa@crl.go.jp,nisiyama@crl.go.jp, keren@crl.go.jp, rikuta@crl.go.jp, t-yasui@crl.go.jp, kohno@crl.go.jp]

Re: [IEEE P802.15 Alternative PHY Call For Proposals, IEEE P802.15-02/327r7]

Abstract: [The implementation feasibility issues of optimized SSA-UWB pulse wavelets are investigated, considering the effects of Ultra Wideband antenna, quantization bits and sampling scheme. ]

Purpose: [For analyzing the implementation feasibility of SSA-UWB pulse waveform shapes.]

Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.

Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

CRL & CRL-UWB Consortium

slide2

Implementation Feasibility of SSA-UWB Pulse Wavelets

Honggang ZHANG, K. Y. YAZDANDOOST,

Kenichi TAKIZAWA, Iwao NISHIYAMA

Keren LI,Yuko RIKUTA,

Tetsuya YASUI, Ryuji KOHNO

Communications Research Laboratory (CRL)

& CRL-UWB Consortium

CRL & CRL-UWB Consortium

slide3

Major Contributors For This Proposal Update

Honggang ZHANG

Kamya Y. YAZDANDOOST

Kenichi TAKIZAWA

Iwao NISHIYAMA

Keren LI

Yuko RIKUTA

Tetsuya YASUI

Ryuji KOHNO

CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

slide4

Outline of presentation

Summary of previously proposed SSA-UWB pulse wavelets

Effects of quantization and sampling scheme on implementation issues of SSA-UWB pulse wavelets

 Using CRL’s SSA-UWB test-bed

3. Effects of two specific Ultra Wideband antennas on implementation issues of SSA-UWB pulse wavelets

 T-type antenna designed in CRL-UWB Consortium

 K-type antenna designed in CRL-UWB Consortium

Conclusion remarks

Backup materials

CRL & CRL-UWB Consortium

slide5

GPS Band

3.1

10.6

1.99

1.61

0.96

1. Summary of previously proposed SSA-UWB pulse wavelets

  • Design a proper pulse wavelet with high frequency efficiency corresponding to any regulatory frequency mask.
  • Adjust transmitted signal’s spectra adaptively, so as to minimize interference with co-existing systems.

SSA-UWB (Soft-Spectrum Adaptation) philosophy

CRL & CRL-UWB Consortium

slide6

SSA-UWB for interference avoidance, global harmonization and compliance

  • Global harmonization and compliance is the everlasting aim and basic philosophy of CRL & CRL-UWB Consortium.
  • SSA-UWBscheme has a wide capability to be harmonized with all the present or future UWB systems and co-exist with various existing narrowband radio systems.
  • Just changing the kernel functions and shapes of SSA-UWB pulse wavelets to achieve smooth version-up.

CRL & CRL-UWB Consortium

slide7

Features ofSSA-UWB

  • SSA-UWB with flexible pulse waveform and frequency band can be applied tosingle and multi-band/multi-carrier UWB by

 Free-verse typepulse waveform shapingand

 Geometrical typepulse waveform shaping, respectively.

  • Interference avoidanceforco-existence, harmonizationfor various systems,andglobal implementation can be realized.

 SSA-UWBcan flexibly adjust UWB signal spectrum so as to match with spectral restriction in transmission power, i.e. spectral masks in both cases ofsingleandmultiplebands.

  • Scalable, adaptive performance improvement.
  • Smooth system version-up similar to Software Defined Radio(SDR).

CRL & CRL-UWB Consortium

slide8

SSA-UWB optimized pulse wavelet generation

Spectrum characteristics of optimalSSA-UWB pulse wavelet

2

0

-10

1.5

-20

1

-30

0.5

-40

Relative amplitude

Relative amplitude (dB)

-50

0

-60

-0.5

-70

-1

-80

(3.12GHz)

(5.8GHz)

-1.5

-90

0

20

40

60

80

100

120

140

0

50

100

150

200

250

300

0.0ns

0.56ns

1.125ns

1.6875ns

2.25ns

2.8125ns

3.375ns

0.0GHz

3.47GHz

6.94GHz

10.41GHz

13.88GHz

17.35GHz

Frequency (1 sample=69.4MHz)

SSA-UWB pulse wavelet with adaptive spectral notches achieving coexistence, flexibility and efficient power transmission

Time (128 samples=3.6 ns)

CRL & CRL-UWB Consortium

slide9

Interference avoidance, global harmonization and compliance utilizing optimized SSA-UWB pulse wavelets

Fixed Satellite Service

200MHz

200MHz

Broadcast Auxiliary Service

dBm/MHz

1GHz

3.1GHz

5.8GHz

10GHz

CRL & CRL-UWB Consortium

slide10

2. Effects of quantization and sampling scheme on implementation issues of SSA-UWB pulse wavelets

Based on CRL’s SSA-UWB test-bed

CRL & CRL-UWB Consortium

slide11

2

1.5

1

0.5

Relative amplitude

0

-0.5

-1

-1.5

0

20

40

60

80

100

120

140

0.0ns

0.56ns

1.125ns

1.6875ns

2.25ns

2.8125ns

3.375ns

Time (samples)

MATLAB simulation of SSA-UWB pulse wavelet with various samples per pulse

2

1.5

1

0.5

Relative amplitude

0

-0.5

-1

-1.5

0

200

400

600

800

1000

1200

0.0ns

0.56ns

1.125ns

1.6875ns

2.25ns

2.8125ns

3.375ns

Time (samples)

SSA-UWB optimized pulse waveform generation

(128 samples=3.6ns)

SSA-UWB optimized pulse waveform generation

(1024 samples=3.6ns)

CRL & CRL-UWB Consortium

slide12

MATLAB simulation of SSA-UWB pulse wavelet with various quantization bits (2 and 3 bits)

SSA-UWB optimized pulse waveform generation

(1024 samples, 2bit)

SSA-UWB optimized pulse waveform generation

(1024 samples, 3bit)

CRL & CRL-UWB Consortium

slide13

MATLAB simulation of SSA-UWB pulse wavelet with various quantization bits (2 and 3 bits)

SSA-UWB optimized pulse waveform generation

(1024 samples, 2bit)

SSA-UWB optimized pulse waveform generation

(1024 samples, 3bit)

CRL & CRL-UWB Consortium

slide14

1

1

0.8

0.8

0.6

0.6

0.4

0.4

0.2

0.2

Relative amplitude

Relative amplitude

0

0

-0.2

-0.2

-0.4

-0.4

-0.6

-0.6

-0.8

-0.8

-1

-1

0

200

400

600

800

1000

1200

0

200

400

600

800

1000

1200

0.0ns

0.56ns

1.125ns

1.6875ns

2.25ns

2.8125ns

3.375ns

0.0ns

0.56ns

1.125ns

1.6875ns

2.25ns

2.8125ns

3.375ns

Time (samples)

Time (samples)

MATLAB simulation of SSA-UWB pulse wavelet with various quantization bits (4 and 6 bits)

SSA-UWB optimized pulse waveform generation

(1024 samples, 4bit)

SSA-UWB optimized pulse waveform generation

(1024 samples, 6bit)

CRL & CRL-UWB Consortium

slide15

10

10

0

0

-10

-10

-20

-20

Relative amplitude (dB)

Relative amplitude (dB)

-30

-30

-40

-40

-50

-50

-60

-60

-70

-70

0

50

100

150

200

250

300

0

50

100

150

200

250

300

0.0GHz

3.47GHz

6.94GHz

10.41GHz

13.88GHz

17.35GHz

0.0GHz

3.47GHz

6.94GHz

10.41GHz

13.88GHz

17.35GHz

Frequency (samples)

Frequency (samples)

MATLAB simulation of SSA-UWB pulse wavelet with various quantization bits (4 and 6 bits)

Spectrum characteristics of SSA-UWB optimal pulse

(1024 samples, 4bit)

Spectrum characteristics of SSA-UWB optimal pulse

(1024 samples, 6bit)

CRL & CRL-UWB Consortium

slide16

1

1

Q

4

S

A

M

P

L

E

1

2

8

Q

4

S

A

M

P

L

E

2

5

6

0

.

7

5

0

.

7

5

0

.

5

0

.

5

0

.

2

5

0

.

2

5

e

e

d

d

u

u

t

t

i

0

l

i

0

l

p

p

m

m

A

A

-

0

.

2

5

-

0

.

2

5

-

0

.

5

-

0

.

5

-

0

.

7

5

-

0

.

7

5

-

1

-

1

-

2

.

7

-

1.8

-

0

.

9

0

0

.

9

1.8

2

.

7

-

2

.

7

-

1.8

-

0

.

9

0

0

.

9

1.8

2

.

7

-

9

-

9

´

´

T

i

m

e

[

s

e

c

]

(

1

0

)

(

1

0

)

T

i

m

e

[

s

e

c

]

SSA-UWB pulse wavelet realization using UWB Soft-Spectrum Adaptation test-bed with 4-bit quantization

(128 and 256 samples per pulse)

SSA-UWB pulse generation

(Test-bed,128 samples, 4bit)

SSA-UWB pulse generation

(Test-bed,256 samples, 4bit)

CRL & CRL-UWB Consortium

slide17

1

1

Q

4

S

A

M

P

L

E

5

1

2

Q

4

S

A

M

P

L

E

1

0

2

4

0

.

7

5

0

.

7

5

0

.

5

0

.

5

e

e

0

.

2

5

0

.

2

5

d

d

u

u

t

t

i

i

l

l

0

0

p

p

m

m

A

A

-

0

.

2

5

-

0

.

2

5

-

0

.

5

-

0

.

5

-

0

.

7

5

-

0

.

7

5

-

1

-

1

-

2

.

7

-

1.8

-

0

.

9

0

0

.

9

1.8

2

.

7

-

2

.

7

-

1.8

-

0

.

9

0

0

.

9

1.8

2

.

7

-

9

-

9

´

´

T

i

m

e

[

s

e

c

]

T

i

m

e

[

s

e

c

]

(

1

0

)

(

1

0

)

SSA-UWB pulse wavelet realization using UWB Soft-Spectrum Adaptation test-bed with 4-bit quantization

(512 and 1024 samples per pulse)

SSA-UWB pulse generation

(Test-bed, 512 samples, 4bit)

SSA-UWB pulse generation

(Test-bed, 1024 samples, 4bit)

CRL & CRL-UWB Consortium

slide18

SSA-UWB pulse wavelet realization using UWB Soft-Spectrum Adaptation test-bed with 4-bit quantization

(128 samples per pulse)

128 samples

Spectrum characteristics of SSA-UWB optimal pulse

(Matlab simulation, 128 samples, no quantization)

Spectrum characteristics of SSA-UWB optimal pulse

(Test-bed, 128 samples, 4bit)

CRL & CRL-UWB Consortium

slide19

256 samples

SSA-UWB pulse wavelet realization using UWB Soft-Spectrum Adaptation test-bed with 4-bit quantization

(256 samples per pulse)

Spectrum characteristics of SSA-UWB optimal pulse

(Matlab simulation, 256 samples, no quantization)

Spectrum characteristics of SSA-UWB optimal pulse

(Test-bed, 256 samples, 4bit)

CRL & CRL-UWB Consortium

slide20

512 samples

SSA-UWB pulse wavelet realization using UWB Soft-Spectrum Adaptation test-bed with 4-bit quantization

(512 samples per pulse)

Spectrum characteristics of SSA-UWB optimal pulse

(Matlab simulation, 512 samples, no quantization)

Spectrum characteristics of SSA-UWB optimal pulse

(Test-bed, 512 samples, 4bit)

CRL & CRL-UWB Consortium

slide21

1/8 sample

1024 samples

SSA-UWB pulse wavelet realization using UWB Soft-Spectrum Adaptation test-bed with 4-bit quantization

(1024 samples per pulse)

Spectrum characteristics of SSA-UWB optimal pulse

(Matlab simulation, 1024 samples, no quantization)

Spectrum characteristics of SSA-UWB optimal pulse

(Test-bed, 1024 samples, 4bit)

CRL & CRL-UWB Consortium

slide22

64 samples

64 samples

SSA-UWB pulse wavelet realization using UWB Soft-Spectrum Adaptation test-bed with 4-bit quantization

(64 samples per pulse)

SSA-UWB pulse generation

(Test-bed, 64 samples, 4bit)

Spectrum characteristics of SSA-UWB optimal pulse

(Test-bed, 64 samples, 4bit)

CRL & CRL-UWB Consortium

slide23

3. Effects of two specific Ultra Wideband antennas on implementation issues of SSA-UWB pulse wavelets

(3.1) T-type antenna

(3.2) K-type antenna

(3.3) Pre-equalization for SSA-UWB pulse shape calibration

CRL & CRL-UWB Consortium

slide24

Transfer function (S11) characteristics of T-type antenna

0

-5

-10

-15

Return Loss (dB)

-20

-25

-30

-35

-40

-45

0

50

100

150

200

250

300

350

400

450

2.32GHz

3.695GHz

5.070GHz

6.44GHz

7.82GHz

9.195GHz

10.57GHz

11.945GHz

3.1 T-type UWB antenna designed in CRL & CRL-UWB Consortium

Frequency (samples)

CRL & CRL-UWB Consortium

slide25

0.06

0.04

0.02

0

-0.02

Impulse response of T-type antenna transfer function (S11)

Phase feature of T-type antenna transfer function (S11)

0

-0.04

-5

-0.06

-10

-0.08

Relative phase (degree)

Relative amplitude

-15

-0.1

-20

-0.12

-25

-0.14

0

20

40

60

80

100

120

140

-30

0

50

100

150

200

250

300

350

400

450

Time (samples)

Frequency (samples)

T-type UWB antenna designed in CRL & CRL-UWB Consortium (Cont.)

CRL & CRL-UWB Consortium

slide26

SSA-UWB optimized pulse wavelet generation

Spectrum characteristics of optimalSSA-UWB pulse wavelet

2

0

-10

1.5

-20

1

-30

0.5

-40

Relative amplitude

Relative amplitude (dB)

-50

0

-60

-0.5

-70

-1

-80

(3.12GHz)

(5.8GHz)

-1.5

-90

0

20

40

60

80

100

120

140

0

50

100

150

200

250

300

0.0ns

0.56ns

1.125ns

1.6875ns

2.25ns

2.8125ns

3.375ns

0.0GHz

3.47GHz

6.94GHz

10.41GHz

13.88GHz

17.35GHz

Time (128 samples=3.6 ns)

Frequency (1 sample=69.4MHz)

Effects of T-type Ultra Wideband antennas on SSA-UWB pulse shape

CRL & CRL-UWB Consortium

slide27

Reflected SSA-UWB pulse waveform by T-type antenna

Spectrum characteristics of reflected SSA-UWB pulse

(T-type antenna)

2

-10

1.5

Reflected pulse

-20

1

Generated pulse

-30

0.5

-40

Relative amplitude

Relative amplitude (dB)

-50

0

-60

-0.5

-70

-1

-80

-1.5

-90

0

50

100

150

200

250

300

0

50

100

150

200

250

300

Frequency (samples)

Time (samples)

Effects of T-type Ultra Wideband antennas on SSA-UWB pulse shape (Cont.)

CRL & CRL-UWB Consortium

slide28

Transfer function (S11) characteristics of K-type antenna

Phase feature of K-type antenna transfer function (S11)

0

0

-20

-5

-40

-60

-10

Relative phase (degree)

Return Loss (dB)

-80

-15

-100

-120

-20

-140

-25

0

20

40

60

80

100

120

140

160

180

-160

0

20

40

60

80

100

120

140

160

180

3.0GHz

3.9GHz

4.9GHz

5.9GHz

6.9GHz

7.9GHz

8.9GHz

9.9GHz

10.9GHz

Frequency (samples)

Frequency (samples)

3.2 K-type UWB antenna designed in CRL & CRL-UWB Consortium

CRL & CRL-UWB Consortium

slide29

Impulse response of K-type antenna transfer function (S11)

0.08

0.06

0.04

0.02

Relative amplitude

0

-0.02

-0.04

-0.06

-0.08

0

20

40

60

80

100

120

140

160

180

Time (samples)

K-type UWB antenna designed in CRL & CRL-UWB Consortium (Cont.)

CRL & CRL-UWB Consortium

slide30

Reflected SSA-UWB pulse waveform by K-type antenna

Spectrum characteristics of reflected SSA-UWB pulse waveform

(K-type antenna)

-10

2

-20

Reflected pulse

1.5

-30

Generated pulse

1

-40

-50

0.5

Relative amplitude (dB)

Relative amplitude

-60

0

-70

-0.5

-80

-90

-1

-100

-1.5

-110

0

50

100

150

200

250

300

0

50

100

150

200

250

300

Time (samples)

Frequency (samples)

Effects of K-type Ultra Wideband antennas on SSA-UWB pulse shape

CRL & CRL-UWB Consortium

slide31

Comparisons of effects of T- & K-type Ultra Wideband antennas on SSA-UWB pulse shape

Spectrum characteristics of reflected SSA-UWB pulse waveforms

by T- & K-type antenna

-10

K-type antenna

-20

-30

T-type antenna

-40

-50

Relative amplitude (dB)

-60

-70

-80

-90

-100

-110

0

50

100

150

200

250

300

Frequency (samples)

CRL & CRL-UWB Consortium

slide32

Spectrum characteristics of reflected & required SSA-UWB pulse waveforms

by T- & K-type antenna

0

-10

-20

K-type antenna

-30

T-type antenna

-40

Relative amplitude (dB)

-50

-60

-70

-80

-90

0

50

100

150

200

250

300

Frequency (samples)

Comparisons of effects of T- & K-type Ultra Wideband antennas on SSA-UWB pulse shape (Cont.)

CRL & CRL-UWB Consortium

slide33

channel

antenna

filter

filter

antenna

X

Y

C

Fr

Ar

Ft

At

Pulse shape in both time and frequency domain is strongly affected by filter, antenna and channel characteristics.

SSA pulse

generator

With

Pre-equalization

filter

antenna

X

Xpre

X

At

Ft

Xpre=X Ft -1At-1

Xpost

channel

antenna

filter

Post-equalization

Y

C

Fr

Ar

Xpost=YC-1 Ar-1 Fr-1

3.3 Pre-equalization for SSA-UWB pulse shape calibration

CRL & CRL-UWB Consortium

slide34

Spectrum of Pre-equalized SSA-UWB pulse wavelet on the air

(T-type antenna)

Pre-equalized SSA-UWB pulse for T-type antenna

Pre-equalized pulse

2

0

Required pulse

-10

1.5

-20

1

-30

-40

0.5

Relative amplitude (dB)

Relative amplitude

-50

0

-60

-0.5

-70

-80

-1

-90

0

50

100

150

200

250

300

-1.5

0

50

100

150

Frequency (samples)

Time (samples)

Pre-equalization for SSA-UWB pulse wavelet corresponding to T-type antenna

CRL & CRL-UWB Consortium

slide35

Spectrum of Pre-equalized SSA-UWB pulse wavelet on the air

(K-type antenna)

Pre-equalized SSA-UWB pulse (K-type antenna)

0

2

Pre-equalized pulse

-10

1.5

-20

Required pulse

-30

1

-40

Relative amplitude (dB)

0.5

Relative amplitude

-50

-60

0

-70

-0.5

-80

-90

-1

0

50

100

150

200

250

300

Frequency (samples)

-1.5

0

50

100

150

200

250

300

Time (samples)

Pre-equalization for SSA-UWB pulse wavelet corresponding to K-type antenna

CRL & CRL-UWB Consortium

slide36

Spectrum characteristics of SSA-UWB pulse wavelet on-the-air

(No Pre-equalization)

Spectrum of Pre-equalized & required SSA-UWB pulse wavelets on-the-air (T- & K-type antenna)

0

0

K-type antenna

-10

-10

T-type antenna

-20

-20

-30

-30

required pulse

-40

Relative amplitude (dB)

-40

Relative amplitude (dB)

-50

-50

-60

-60

-70

-70

-80

-80

-90

0

50

100

150

200

250

300

-90

0

50

100

150

200

250

300

Frequency (samples)

Pre-equalization for SSA-UWB pulse wavelet realizing spectrum matching

Frequency (samples)

CRL & CRL-UWB Consortium

slide37

4. Conclusion remarks

  • We has tested the effects of quantization bits and sampling scheme on the implementation issues of SSA-UWB pulse wavelets.

 Test-bed results are encouraging

  • We also have investigated the effects of two specific Ultra Wideband antennas on the implementation issues of SSA-UWB pulse wavelets

 CRL’s T-type antenna

 CRl’s K-type antenna

 Measurement and simulation results are encouraging as well

  • Scalable and adaptive performance improvement can be further expected by utilizing various improved UWB devices.

CRL & CRL-UWB Consortium

slide38

5. Backup materials

CRL & CRL-UWB Consortium

slide39

SSA-UWB optimized pulse wavelet generation

Spectrum characteristics of SSA-UWB optimal pulse wavelet

-0

1.5

-10

1

-20

-30

0.5

Relative amplitude (dB)

Relative amplitude

-40

-50

0

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SSA-UWB pulse wavelet with adaptive spectral notches achieving coexistence, flexibility and efficient power transmission

CRL & CRL-UWB Consortium

slide40

Spectrum characteristics of reflected SSA-UWB pulse waveform (T-type antenna)

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CRL & CRL-UWB Consortium

slide41

Reflected SSA-UWB pulse by T-type antenna

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CRL & CRL-UWB Consortium

slide42

Spectrum characteristics of reflected SSA-UWB pulse waveform (K-type antenna)

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CRL & CRL-UWB Consortium

slide43

Reflected SSA-UWB pulse waveform by K-type antenna

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CRL & CRL-UWB Consortium

slide44

Spectrum characteristics of reflected SSA-UWB pulse waveform

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CRL & CRL-UWB Consortium

slide45

Spectrum characteristics of reflected & required SSA-UWB pulse waveforms

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CRL & CRL-UWB Consortium

slide46

SSA-UWB optimized pulse wavelet generation

Spectrum characteristics of SSA-UWB optimal pulse wavelet

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SSA-UWB pulse wavelet with adaptive spectral notches achieving coexistence, flexibility and efficient power transmission (Cont.)

CRL & CRL-UWB Consortium

slide47

Spectrum characteristics of reflected SSA-UWB pulse waveform (T-type antenna)

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CRL & CRL-UWB Consortium

slide48

Reflected SSA-UWB pulse waveform by T-type antenna

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CRL & CRL-UWB Consortium

slide49

Spectrum characteristics of reflected SSA-UWB pulse waveform (K-type antenna)

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CRL & CRL-UWB Consortium

slide50

Reflected SSA-UWB pulse waveform by K-type antenna

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CRL & CRL-UWB Consortium