RRI-GBT MULTI-BAND RECEIVER: MOTIVATION, DESIGN, AND DEVELOPMENT

Design Considerations for a GBT 68-92 GHz Receiver

Scientific motivation for equipping the GBT with receivers for the 3mm band (68-116 GHz) has been discussed in several memos [1]-[3], and later presented in a proposal by the GBT 3mm Receiver Working Group [4]. It was decided that the first receiver module to be built should be capable of both continuum detection and spectroscopy in the 68-92 GHz band (Module 1). Other frequencies and capabilit...

Typical Ka band Satellite Beacon Receiver Design for Propagation Experimentation

This paper presents the design and simulation of a typical Ka band satellite beacon receiver for propagation experimentation. Using satellite beacon signal as a reference signal in satellite wave propagation study, is one of the most important methods. Satellite beacons are frequently available for pointing large antennas, but such signals can be used for measuring the effect of natural phenome...

A 3 mm Receiver for the GBT

A First-Order Noise Analysis of the GBT L-Band Receiver Front-End

Introduction Recent investigations of GBT baselines associated with observations of continuum radio sources have revealed the presence of several frequency dependent anomalies in the spectra produced by traditional calibration and normalization practices [1, 2, 3]. The (sig ref) / ref formulation, where “sig” is the signal produced at the receiver’s output when the telescope is pointing on sour...

Design and Development of Ka Band Digital Beacon Receiver for Ka Band Propagation Studies Experiment

India is planning to conduct its own Ka band propagation studies experiment in order to validate the existing ITU model and to develop a more accurate prediction model for its unique climate condition for guaranteed QoS. This experiment involves measurement of signal attenuation due to rain and development of appropriate mathematical propagation models. This requires a ground receiver to receiv...