The Calculation of System Temperature for a Microwave Receiver

Pritchard, W.L.

doi:10.1201/9781420041163-67

Cited by 2 publications

(2 citation statements)

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“…Let us now turn our attention to the impact of the new source on mismatch, defining the ML delta as DML = ML F opt − ML F min (35) where F opt is the optimised noise figure and the available power gain delta (36) for each i. A plot of these values for each F i is provided in Fig.…”

Section: Design Examplementioning

confidence: 99%

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Design of microwave transistor amplifiers with optimum cascaded gain and noise

Corral

2016

IET Microwaves, Antennas & Propagation

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The design of microwave transistor amplifiers with optimum cascade noise and gain is described. By treating two stages at a time, the condition for the second stage's noise figure needed to satisfy the total cascaded gain and noise performance is derived. Two optimal solutions are possible: Minimum cascade noise figure or maximum available cascade power gain without increasing the cascade noise over that of the minimum noise design. A design example is submitted showing the effectiveness of the proposed method in optimising the gain and noise of cascaded amplifier stages. The approach can be extended to noise temperature and multiple cascaded stages including passive blocks without any loss of generality.

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Section: Design Examplementioning

confidence: 99%

“…This improves the support for optimising more than two stages if any of the subsequent stages are non-minimum noise designs. In addition, the derivations can also be performed relative to cascaded noise temperature [35] without any loss of generality.…”

Section: Design Examplementioning

confidence: 99%

Design of microwave transistor amplifiers with optimum cascaded gain and noise

Corral

2016

IET Microwaves, Antennas & Propagation

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Sea-Surface Specular Multipath for Surface-Level Antennas: Phase 1

Allen¹,

Goshorn²,

Zeidler³

et al. 2005

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. A. A. Beex Virginia TechApproved for public release; distribution is unlimited. SSC San DiegoSan Diego, CA 92152-5001 Executive SummaryThis document describes a specular multipath simulation for antennas located close to a sea surface. The antennas are circularly polarized but the ray-trace implementation readily accommodates any other polarizations. The transmitted signal s T (t) arrives at the receiver's antenna along the direct path and from multiple re°ections o® the sea surface. The surface-level antenna turns the multipath into multiplicative noise|assuming the receiver is narrow band. Under this narrow-band assumption, the received signal s R (t) is approximated by modulating the transmitted signal s T (t) with this multiplicative noise:The multiplicative noise fa(t)g is determined by the sea surface, the elevation angle of the transmitted signal path, and the receiver's antenna. By sweeping over various realizations of the sea surfaces, elevation angles, and various antenna heights and speeds, the systems engineer can estimate sea-surface specular multipath e®ects on the surface-to-satellite link.iii

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The Calculation of System Temperature for a Microwave Receiver

Cited by 2 publications

References 0 publications

Design of microwave transistor amplifiers with optimum cascaded gain and noise

Design of microwave transistor amplifiers with optimum cascaded gain and noise

Sea-Surface Specular Multipath for Surface-Level Antennas: Phase 1

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