Measurement Setups for Millimeter-Wave Antennas at 60/140/270 GHz Bands

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1 Measurement Setups for Millimeter-Wave Antennas at 60/140/270 GHz Bands Xianming QING *1 Zhi Ning CHEN *1,2 1 Institute for Infocomm Research (I 2 R), Singapore 2 National University of Singapore (NUS)

2 Outline Introduction Measurement Setups for Millimeter-Wave Antennas System considerations 60-GHz system 140-GHz system 270-GHz system Conclusions X. Qing and Z. N. Chen 2

3 Introduction Existing and emerging mmw/sub-mmw applications Frequency (GHz) WiGig unlicensed band w/2.5 Gbps ,802.11ad Wireless HD 60 Wireless backhaul w/ mbps Applications Point-to-point licensed communication links w/1.25 Gbps-10Gbps (planned) 77 Automotive Radar Point-to-point licensed communication links w/1.25 Gbps-10Gbps (planned) Point-to-point licensed communication links w/1.25 Gbps-10Gbps (planned) MHz band reserved for space-borne radios Imaging radar Airport ground control Cloud profiling radar Materials imaging Local networking 122 Automotive Radar Atmospheric satellite monitoring Security & healthcare Experimental radar Radio astronomy Millimeter Wave Market worth $1.2 Billion 2018 Research and Markets X. Qing and Z. N. Chen 3/26

4 Introduction 60 GHz antenna Reported mmw/sub-mmw antennas 77 GHz antenna 100 GHz antenna 140 GHz antenna 270 GHz antenna X. Qing and Z. N. Chen 4/26

5 Introduction MmW/sub-mmW antenna measurement set-ups Near-field system NSI, sub-millimeter wave planar near-field scanner in support of the NASA Sub Millimeter Wave Astronomy Satellite Expensive Suitable for coaxial/waveguide fed antenna X. Qing and Z. N. Chen 5/26

6 Introduction Reported mmw/sub-mmw antenna measurement set-ups Far-field systems X. Qing and Z. N. Chen 6/26

7 Introduction Undesired measurement results Gain Radiation pattern X. Qing and Z. N. Chen 7/26

8 Outline Introduction Measurement Setups for Millimeter-Wave Antennas System considerations 60-GHz system 140-GHz system 270-GHz system Conclusions X. Qing and Z. N. Chen 8

9 Measurement Setups for Millimeter-Wave Antennas Considerations for system configuration Signal generator + Spectrum analyser Single frequency, gain/radiation pattern, larger dynamic range Signal Generator Mixer Tx Ant AUT Mixer LNA Spectrum analyzer Vector network analyser Sweeping frequency, gain/radiation pattern, Impedance matching Vector network analyzer mmw Module Tx Ant AUT mmw Module X. Qing and Z. N. Chen 9/26

10 Measurement Setups for Millimeter-Wave Antennas Considerations for system configuration On-wafer antenna characterization Anti-vibration table A clear area is desired! X. Qing and Z. N. Chen 10/26

11 db Measurement Setups for Millimeter-Wave Antennas Considerations for System Configuration System dynamic range Signal Generator Spectrum analyzer Mixer Tx Ant AUT dbm Angle (degree) X. Qing and Z. N. Chen 11/26

12 Measurement Setups for Millimeter-Wave Antennas 60-GHz antenna measurement set-up (50-67 GHz) System dynamic range: 58 db (AUT: 20 dbi) X. Qing and Z. N. Chen 12/26

13 Measurement Setups for Millimeter-Wave Antennas 60-GHz antenna measurement set-up X. Qing and Z. N. Chen 13/26

14 Measurement Setups for Millimeter-Wave Antennas 60-GHz antenna measurement examples X. Qing and Z. N. Chen 14/26

15 Measurement Setups for Millimeter-Wave Antennas System dynamic range: 57 db (AUT: 20 dbi) X. Qing and Z. N. Chen 15/26

16 Measurement Setups for Millimeter-Wave Antennas 140-GHz antenna measurement set-up X. Qing and Z. N. Chen 16/26

17 Measurement Setups for Millimeter-Wave Antennas 140-GHz antenna measurement examples X. Qing and Z. N. Chen 17/26

18 Measurement Setups for Millimeter-Wave Antennas 270-GHz antenna measurement set-up ( GHz) System dynamic range: 2 db (AUT: 20 dbi) Undesirable!! X. Qing and Z. N. Chen 18/26

19 Measurement Setups for Millimeter-Wave Antennas 270-GHz antenna measurement set-up ( GHz) System dynamic range: 23 db (AUT: 20 dbi) X. Qing and Z. N. Chen 19/26

20 db db Measurement Setups for Millimeter-Wave Antennas 270-GHz antenna measurement examples GHz E-plane Measurement Simulation GHz H-plane Measurement Simulation Angle (degree) Angle (degree) X. Qing and Z. N. Chen 20/26

21 Outline Introduction Measurement Setups for Millimeter-Wave Antennas System considerations 60 GHz system 140 GHz system 270 GHz system Conclusions X. Qing and Z. N. Chen 21

22 Conclusions Antenna measurement at mmw frequencies is a big challenge Complicated system configuration Limited system dynamic range, in particular, at upper mmw bands Expensive configuration On-wafer antenna measurement needs extra effort to address X. Qing and Z. N. Chen 22

23 Institute for Infocomm Research (I 2 R), Singapore National University of Singapore qingxm@i2r.a-star..edu.sg chenzn@i2r.a-satr.edu.sg eleczn@nus.edu.sg X. Qing and Z. N. Chen 23

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