Publicação
A CMOS UWB transmitter with Vivaldi Array for Ultra-fast Beam steering microwave radar
| Resumo: | This work presents a new Ultra Wide Band (UWB) beamforming fifth-order derivative Gaussian pulse transmitter with dual small Vivaldi antennas for remote acquisition of vital signals in impulse radar applications. The system consists of a programmable delay circuit (PDC or τ), a UWB pulse generator (PG) circuit and an array of two Vivaldi planar antennas. The circuits is designed using the 0.18µm CMOS IBM process. Spice simulations show the pulse generation with 90mVpp amplitude and 300ps width. The average power consumption is 120µW per pulse, using a 2V power supply at a pulse repetition rate (PRR) of 100MHz. Full tridimensional electromagnetic simulations, using CST MWS, show the main lobe radiation with a gain of 5.5dB, and a beam steering between 20º and -17.5º for azimuthal (θ) angles at the center frequency of 7.5GHz. |
|---|---|
| Autores principais: | De Oliveira,Alexandre M. |
| Outros Autores: | Ascama,Héctor D. O.; Hiramatsu,Roberto K.; Kofuji,Sérgio T.; Perotoni,Marcelo B.; Justo,João F. |
| Assunto: | Health monitoring respiration rate beamforming phased array vital signals heartbeat signals |
| Ano: | 2013 |
| País: | Brasil |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | IBICT |
| Idioma: | inglês |
| Origem: | Oasisbr |
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Atividades financiadas
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