High-Performance IQ Modulator-Based Phase Conjugator for Modular Retrodirective Antenna Array Implementation

SATCOM Retrodirective Array

“…The bistatic results have a slightly broader beamwidth than other reported retrodirective arrays, e.g. the 10x1 reported in [6]. This is due to the 3x3 configuration which was optimised for a coverage of ±40° in both azimuth and elevation, in comparison to a linear array of elements which is only capable of scanning in azimuth.…”

“…Triple mode PLL [5] I/Q phase conjugator [6] Recent Phase conjugating mixers [7] Phase detection and phase shifting [8] DSP [9] possible with lower gain elements [14] , or conversely, smaller numbers of higher gain elements could be used at the expense of steering coverage. …”

A Simple Measurement Technique for Accurate Bistatic Retrodirective Radiation Pattern Calculation Based on the Active Element Pattern Method

“…The expression is derived from the response of a uniform linear array [5] multiplied by the magnitude of the RDA active element patterns, Gn(). The expression has also been modified from that of [2] to include the effect of beam pointing error caused by the frequency difference between transmit and receive wavelengths, t and r.…”

“…This RDA has been previously measured for bistatic and monostatic responses [2], therefore the datasets from this antenna are used here for comparison, along with a new method of radiation pattern measurements which is compatible with monostatic configurations. The method employed is an extension to the RDA active element patterns method [3].…”

Antenna array analog processor for emerging wireless paradigms (Keynote)

“…Several approaches have been developed by the author in order to try to offset these overheads and to harmonise the theoretical framework in which such novel antenna systems can be developed in order to achieve specific operating specifications, [1][2][3][4]. Some of these are discussed below.First, confirm that you have the correct template for your paper size.…”