Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Download
1 / 34

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


  • 51 Views
  • Uploaded on

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]

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)' - clayton-ayala


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

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 / TRDA Area Networks (WPANs)Small 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 Area Networks (WPANs)

  • Requirement for RF Front-end

  • Antenna performance

  • Filter performance

  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA


Contents1
Contents Area Networks (WPANs)

  • 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 Area Networks (WPANs)

  • 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 Area Networks (WPANs)

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 Area Networks (WPANs)

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 Area Networks (WPANs)

  • 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 Area Networks (WPANs)

  • 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 Area Networks (WPANs)

  • Requirement for RF Front-end

  • Antenna performance

  • Filter performance

  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA


Definition of antenna gain

0dBi Area Networks (WPANs)

-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 Area Networks (WPANs)

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 Area Networks (WPANs)

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 Area Networks (WPANs)

Element Location (1)

Antenna A

Edge

Center

Mick Aoki, Taiyo Yuden/TRDA


Element location 2
Element Location (2) Area Networks (WPANs)

Edge

Center

Mick Aoki, Taiyo Yuden/TRDA


Influence of side ground

A Area Networks (WPANs)

Influence of Side Ground

Antenna A

VSWR is degraded by Antenna side ground.

Mick Aoki, Taiyo Yuden/TRDA


Vswr 1

A Area Networks (WPANs)

B

VSWR (1)

Antenna A

Antenna B

Mick Aoki, Taiyo Yuden/TRDA


Vswr 2

C Area Networks (WPANs)

D

VSWR (2)

Antenna C

Antenna D

Mick Aoki, Taiyo Yuden/TRDA


Efficiency
Efficiency Area Networks (WPANs)

2.4GHz Band

7~8dB Attenuation

Mick Aoki, Taiyo Yuden/TRDA


Radiation pattern 1
Radiation Pattern (1) Area Networks (WPANs)

Antenna A

A

Mick Aoki, Taiyo Yuden/TRDA


Radiation pattern 2
Radiation Pattern (2) Area Networks (WPANs)

Antenna B

B

Mick Aoki, Taiyo Yuden/TRDA


Radiation pattern 3
Radiation Pattern (3) Area Networks (WPANs)

Antenna C

C

Mick Aoki, Taiyo Yuden/TRDA


Radiation pattern 4
Radiation Pattern (4) Area Networks (WPANs)

Antenna D

D

Mick Aoki, Taiyo Yuden/TRDA


Group delay
Group Delay Area Networks (WPANs)

Sample : Antenna A

Mick Aoki, Taiyo Yuden/TRDA


Impulse response 1

Double Ridge Area Networks (WPANs)

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) Area Networks (WPANs)

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) Area Networks (WPANs)

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 Area Networks (WPANs)

  • Requirement for RF Front-end

  • Antenna performance

  • Filter performance

  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA


Developed filter
Developed Filter Area Networks (WPANs)

  • 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) Area Networks (WPANs)

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) Area Networks (WPANs)

Dimension : 6.3 x 3.0 x 1.1 mm

Mick Aoki, Taiyo Yuden/TRDA


Balun
Balun Area Networks (WPANs)

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 Area Networks (WPANs)

  • Requirement for RF Front-end

  • Antenna performance

  • Filter performance

  • Conclusion

Mick Aoki, Taiyo Yuden/TRDA


Conclusion
Conclusion Area Networks (WPANs)

  • 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


ad