Rochette, Stéphane ; Villemazet, Jean-François ; Cazaux, Jean-Louis ; Populus, Thierry (2005) A highly integrated GaAs MMIC UHF band demodulator with four tunable quadrature phase shift IF channels. In: Gallium Arsenide applications symposium. GAAS 2004, 11—12 Ottobre 2004, Amsterdam.
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Abstract
A MMIC demodulator has been designed and characterized over the [0.79 – 0.97] GHz RF band. It consists of an RF differential amplifier and an LO 4-way phase splitter affording the 0°, 90°, 180° and 270° relative phase shift and equal amplitude signals. Both RF and LO channels drive a double double balanced quad FET mixer which provides the four quadrature phase shift voltage baseband IF signals on high outputs impedances. This chip (4 x 3.1 mm²) has been fabricated using a GaAs 0.5µm MESFET process and reaches a high performance as far as IF signals balance accuracy is pursued.
| Document type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | Area 09 - Ingegneria industriale e dell'informazione > ING-INF/01 Elettronica |
| Depositato da: | Monica Spocchia |
| Depositato il: | 21 Oct 2005 |
| Last modified: | 16 May 2011 13:38 |
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