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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [TaiyoYuden/TRDA Small Form Factor Ceramic Antenna for Low Rate alt-PHY ] Date Submitted: [4 January, 2005]

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slide1

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

Submission Title: [TaiyoYuden/TRDA Small Form Factor Ceramic Antenna for Low Rate alt-PHY]

Date Submitted: [4 January, 2005]

Source: [Hironori Okado(1), Mick Aoki(2)] Company [(1)Taiyo Yuden Co.,Ltd., (2)TRDA Inc.]

Address [(1)8-1 Sakaecho Takasaki- shi Gunma 370-8522 Japan, (2)10180 Telesis Court Suite120,

San Diego, CA 92121] Voice [(1)+81-27-324-2311, (2)+1-858-554-0755] Fax[(1)+81-27-324-2326,

(2)+1-858-455-7578] E-mail [(1)[email protected], (2)[email protected]]

Re: []

Abstract: [This presentation is introduction to small form factor ceramic antenna for low rate alt-PHY.]

Purpose: [Proposing a RF front-end for standardization by 802.15.4a.]

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.

Mick Aoki, Taiyo Yuden/TRDA

taiyo yuden trda small form factor ceramic antenna for low rate alt phy

Taiyo Yuden / TRDASmall Form Factor Ceramic Antenna for Low Rate alt-PHY

Hironori Okado

Taiyo Yuden Co.,Ltd.

Mick Aoki

TRDA Inc. (Taiyo Yuden R&D Center of America)

Mick Aoki, Taiyo Yuden/TRDA

contents
Contents
  • Requirement for RF Front-end
  • Antenna performance
  • Filter performance
  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA

contents1
Contents
  • Requirement for RF Front-end
  • Antenna performance
  • Filter performance
  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA

technical requirements for 802 15 4a
Technical requirements for 802.15.4a
  • Bit rate : 1kb/s to ≥1Mb/s
  • Range : 30m -
  • Interference susceptibility
  • Low power consumption
  • Location awareness
  • Regulatory matters

UWB is well suited to 802.15.4a

Mick Aoki, Taiyo Yuden/TRDA

structure of 802 15 4a uwb radio
Structure of 802.15.4a UWB Radio

PHY

Antenna

RF

BB

Chip

MAC

Chip

BPF

BEF

Balun

RF Front End

Mick Aoki, Taiyo Yuden/TRDA

uwb band and other wireless standards
UWB Band and Other Wireless Standards

Cordless phone

Microwave Oven

802.15.1/3/4

802.11b/g

Cordless phone

802.11a

Cell phone

2400

2500

4900

5835

MHz

MHz

MHz

MHz

UWB

UWB

f

3.1GHz

4.9GHz

5.835GHz

10.6GHz

1st generation UWB will use below 802.11a band

2nd generation UWB needs to consider interference from/to 802.11a

Mick Aoki, Taiyo Yuden/TRDA

requirements for antenna
Requirements for Antenna
  • Non-Directional
  • Small Form Factor as SD Memory Card
  • Robust
  • High Gain

TG4a Technical Requirement (Doc: IEEE 15-04-0198-02-004a)

P802.15.4a Alt PHY Selection Criteria (Doc: IEEE 15-04-0232-16-004a)

Mick Aoki, Taiyo Yuden/TRDA

requirements for filter
Requirements for Filter
  • High Attenuation for Interferences

- WLANs (2.4 and 5GHz)

- WPANs (802.15.1, 802.15.3, 802.15.4)

- Cordless phones (2.4GHz and 5.8GHz)

- Cellular phones

- Microwave ovens

  • Low Insertion Loss
  • Small Form Factor

TG4a Technical Requirement (Doc: IEEE 15-04-0198-02-004a)

P802.15.4a Alt PHY Selection Criteria (Doc: IEEE 15-04-0232-16-004a)

Mick Aoki, Taiyo Yuden/TRDA

contents2
Contents
  • Requirement for RF Front-end
  • Antenna performance
  • Filter performance
  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA

definition of antenna gain

0dBi

-a (dB)

1

+a (dB)

Isotropic

radiation

Definition of Antenna Gain

Ideal Radiation Pattern of Non-Directional Antenna (Isotropic Radiation)

How to increase gain?

Total radiation energy

for total polarization radiation

+a(dB)  Specific Direction Becomes Big

Theoretical limit at zero-loss condition

-a(dB)  Other Direction Becomes Weak

The Theoretical Maximum Gain for Non-directional Antenna is 0dBi

Mick Aoki, Taiyo Yuden/TRDA

developed antenna

A

B

C

D

Developed Antenna
  • Ceramic Antenna is Small.

- Element Size : 8 x 6 x 1 mm

- Ground Size : 20 x 25 mm (Antenna A)

(Size of SD memory : 24 x 32 mm)

  • Designed for RF tag application
  • ICs and components can be mounted on board. Antenna needs at least one ground plane.

Mick Aoki, Taiyo Yuden/TRDA

measurement system

31pcs Probes

Antenna

Rotate

Measurement System

Antenna Efficiency and Radiation Pattern

Measured by multi-probe antenna measurement system

Mick Aoki, Taiyo Yuden/TRDA

element location 1

A

Element Location (1)

Antenna A

Edge

Center

Mick Aoki, Taiyo Yuden/TRDA

element location 2
Element Location (2)

Edge

Center

Mick Aoki, Taiyo Yuden/TRDA

influence of side ground

A

Influence of Side Ground

Antenna A

VSWR is degraded by Antenna side ground.

Mick Aoki, Taiyo Yuden/TRDA

vswr 1

A

B

VSWR (1)

Antenna A

Antenna B

Mick Aoki, Taiyo Yuden/TRDA

vswr 2

C

D

VSWR (2)

Antenna C

Antenna D

Mick Aoki, Taiyo Yuden/TRDA

efficiency
Efficiency

2.4GHz Band

7~8dB Attenuation

Mick Aoki, Taiyo Yuden/TRDA

radiation pattern 1
Radiation Pattern (1)

Antenna A

A

Mick Aoki, Taiyo Yuden/TRDA

radiation pattern 2
Radiation Pattern (2)

Antenna B

B

Mick Aoki, Taiyo Yuden/TRDA

radiation pattern 3
Radiation Pattern (3)

Antenna C

C

Mick Aoki, Taiyo Yuden/TRDA

radiation pattern 4
Radiation Pattern (4)

Antenna D

D

Mick Aoki, Taiyo Yuden/TRDA

group delay
Group Delay

Sample : Antenna A

Mick Aoki, Taiyo Yuden/TRDA

impulse response 1

Double Ridge

Horn Antenna

UWB Antenna

Impulse

Generator

1 ft

Oscilloscope

ATT

Anechoic Chamber

Impulse Response (1)

Transmitted Signal at input of

Double Ridge Horn Antenna

500ps/Div 10mV/Div

Mick Aoki, Taiyo Yuden/TRDA

impulse response 2
Impulse Response (2)

Received Signal by Antenna A

500ps/Div 10mV/Div

Received Signal by Antenna B

500ps/Div 10mV/Div

Mick Aoki, Taiyo Yuden/TRDA

impulse response 3
Impulse Response (3)

Received Signal by Antenna C

500ps/Div 10mV/Div

Received Signal by Antenna D

500ps/Div 10mV/Div

Mick Aoki, Taiyo Yuden/TRDA

contents3
Contents
  • Requirement for RF Front-end
  • Antenna performance
  • Filter performance
  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA

developed filter
Developed Filter
  • Ceramic Filter is Small and Robust
  • Band Pass Filter for 1st generation
  • Band Elimination Filter against 5GHz band
  • Performance

-Low Insertion loss

-High Attenuation

  • Chips need Balun

Mick Aoki, Taiyo Yuden/TRDA

band pass filter bpf
Band Pass Filter (BPF)

Dimension : 3.2 x 1.6 x 1.15 mm

For 1st generation chip set

Mick Aoki, Taiyo Yuden/TRDA

band elimination filter bef
Band Elimination Filter (BEF)

Dimension : 6.3 x 3.0 x 1.1 mm

Mick Aoki, Taiyo Yuden/TRDA

balun
Balun

Dimension : 2.0 x 1.25 x 0.9 mm

Dimension : 3.2 x 2.5 x 0.85 mm

Mick Aoki, Taiyo Yuden/TRDA

contents4
Contents
  • Requirement for RF Front-end
  • Antenna performance
  • Filter performance
  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA

conclusion
Conclusion
  • Proposed UWB Antenna meets requirements.

- Non-directional, Small, Robust, High Gain

- Flat Group Delay, Good Impulse Response

  • The Antenna Element can be used in the corner of RF tag or module. ICs and components can be mounted on board. There is less wasted space.
  • Proposed Filter has enough performance to avoid interference.
  • Accelerate Time to Market. The Antenna and Filters are Available Now.

Mick Aoki, Taiyo Yuden/TRDA

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