Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Impedance Tuning Unit for DVB-H Front-End

In English

Författare

Summary, in English

When implementing low frequency antennas in small devices, e.g., mobile phones using DVB-H, a large mismatch is inevitable. If a impedance tuning unit is introduced reflection losses and noise are reduced while gain is improved. A ITU consisting of 6 switched capacitances and 2 fixed LTCC inductors is studied. Simulations show that since a VSWR = 10 mismatch is reduced to better than VSWR = 2, the ITU increases the power delivered by 2.9 dB to 4.2 dB for an antenna mismatch between VSWR = 4 and VSWR = 8. In the same time, the average noise figure for VSWR = 4 is reduced by 1.4 dB from 4.6 dB to 3.2 dB; and for VSWR = 8 it is reduced by 2.8 dB from 6.4 dB to 3.7 dB. The highest noise figure for VSWR = 8 is reduced by 4.2 dB from 9.1 dB to 4.9 dB.

Publiceringsår

2006

Språk

Engelska

Publikation/Tidskrift/Serie

[Host publication title missing]

Dokumenttyp

Konferensbidrag

Förlag

SSoCC (Swedish System on Chip Conference)

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering
  • Other Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • impedance matching
  • front-end
  • DVB
  • CMOS
  • capacitor bank
  • switched capacitor
  • ATU
  • reconfigurable matching
  • ITU

Conference name

SSoCC (Swedish System-on-Chip Conference), 2006

Conference date

2006-05-04 - 2006-05-05

Conference place

Kålmården, Sweden

Status

Published

Forskningsgrupp

  • Integrated Electronic Systems