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Outline

Outline. UU activities within Department 3: Completed development and evaluation of fully integrated 24 GHz receiver with on-chip antenna Started development on internal active antenna for FM radio in handheld terminals Suggested topics for joint research within antenna cluster:

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Outline

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  1. Outline • UU activities within Department 3: • Completed development and evaluation of fully integrated 24 GHz • receiver with on-chip antenna • Started development on internal active antenna for FM radio • in handheld terminals • Suggested topics for joint research within antenna cluster: • Internal DVB-H antenna for clamshell-type handheld terminals • QB 850/900/1800/1900 PIFA for bar-type handheld terminals • UWB antenna for handheld terminals

  2. Completed activities Monolithic Receiver-Antenna Integration • 24 GHz Receiver with integrated • antenna on high resistivity silicon • manufactured and evaluated: • ~30 dB total conversion gain • <10 dB receiver noise figure • <10 mm2 area consumption • (mainly from pad placement req.) • 200 mA @ 4V DC

  3. On-going activities Internal FM-antenna for terminals FM: 88-108 MHz -> λ0 = 2,8-3,4 m -> Not possible to fit λ0/2 inside terminal! Rrad ≈ a few milliohms Classical solution for terminals: use earpiece cord and phone chassi as unsymmetrical dipole antenna Recent trend is to use Bluetooth handsfree -> no cord -> no antenna  λ0/3 λ0/30

  4. On-going activities Internal FM-antenna for terminals Suggested approach: Active Coupling Network (i.e. ant & preamp integrated) ZA Active Coupling Network Receiver 50 Ω -> Effectively removes 50 Ω antenna impedance requirement

  5. On-going activities Internal FM-antenna for terminals • Requirements of Active Coupling Network: • Low Noise Figure • Γopt close to Γin(antenna) • Enough gain to supress receiver noise • Highly linear (strong 900 MHz blocker from GSM PA) • Unconditional stability -> Antenna design replaced by circuit design

  6. Suggested activities Possible Antenna Cluster projects 1) Internal DVB-H antenna (470 to ~700 MHz) for Clamshell phone Suggestion: Needs broad band matching network?!

  7. Suggested activities Possible Antenna Cluster projects 2) Internal PIFA for Bar-type QB 850/900/1800/1900 GSM Suggestion: start with DB 900/1800 and use matching network to obtain QB Or: start with TB 900/1800/1900 and use matching network to obtain QB (or PB)

  8. Suggested activities Possible Antenna Cluster projects 3) Dual broad band dipole 800/900/1800/1900 Suggestion: start with standard dipole with first (series) resonance at 900 MHz and second (parallel) resonance at 1800 MHz. Design network (and balun?) for dual wideband matching.

  9. Suggested activities Possible Antenna Cluster projects 4) UWB terminal antenna • Specification? - Constant group delay? Necessary? Can RFT provide const. group delay matching network? - Bandwidth? 500 MHz or 3-10 GHz? • - Gain/Efficiency? • Approach? What kind of radiator?

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