Front-End Topologies for Phased Array Radiometry

Sönmez, Mehmet; Trew, R.J.; Hearn, C. P.

doi:10.1109/euma.1992.335876

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…The technique is well known and widely used in communications systems and the remote sensing framework, even though to the authors' knowledge this is the first time it is used in microwave radiometry. However, some studies and operative instruments using the related idea of phased array have been carried out [22], especially in the radio-astronomy field. Both concepts, digital beamforming and phased array, are similar, but some substantial differences exist.…”

Section: Digital Beamforming General Considerationsmentioning

confidence: 99%

Description and Performance of an L-Band Radiometer with Digital Beamforming

Bosch-Lluis¹,

Ramos-Perez²,

Camps³

et al. 2010

Remote Sensing

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This paper presents the description and performance tests of an L-band microwave radiometer with Digital Beamforming (DBF), developed for the Passive Advanced Unit (PAU) for ocean monitoring project. PAU is an instrument that combines, in a single receiver and without time multiplexing, a microwave radiometer at L-band (PAU-RAD) and a GPS-reflectometer (PAU-GNSS-R). This paper focuses on the PAU-RAD beamformer's first results, analyzing the hardware and software required for the developed prototype. Finally, it discusses the first results measured in the Universitat Politè cnica de Catalunya (UPC) anechoic chamber.

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Section: Digital Beamforming General Considerationsmentioning

confidence: 99%

Description and Performance of an L-Band Radiometer with Digital Beamforming

Bosch-Lluis¹,

Ramos-Perez²,

Camps³

et al. 2010

Remote Sensing

View full text Add to dashboard Cite

show abstract

“…The calibration subsystem is formed by a noise source, a 1-4 power divider, four matched loads and four calibration switches. In the antenna array chain, the LNAs are placed after each calibration switch due to pre-amplification resulting in improved gain and stability [18]. As shown in Fig.1, the channel chain is a heterodyne microwave receiver, which is constituted by a power amplifier (PA), a mixer, a local oscillator, a low-pass filter, IF, A/D, a square law detector and an integrator.…”

Section: L-band Phased Array Radiometermentioning

confidence: 99%