A 62/66 GHz frequency offset retrodirective array

Buchanan, Neil; Brabetz, T.; Fusco, Vincent

doi:10.1109/mwsym.2002.1011620

Cited by 9 publications

(2 citation statements)

References 6 publications

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“…The first of these was in 2002, when Buchanan, Brabetz and Fusco reported a 62/66 GHz frequency offset retrodirective array [36]. The separation of center frequencies between transmit and receive modes is done to improve isolation between the two signals.…”

Section: Retrodirective Arraysmentioning

confidence: 99%

Reflector and Lens Antennas

Preez

Sinha

2016

Millimeter-Wave Antennas: Configurations and Applications

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This chapter is subdivided into two sets of antennas that function on similar principles. While the reflector is known for shaping a beam in a particular direction (based on the location of a feed antenna) by using a reflecting aperture, a lens achieves a shaped beam by diffracting the signal from the source antenna.The use of reflector antennas can be traced back as far as the discovery of electromagnetic propagation in 1888. However, it was not until the explosion of radar development in World War II that the design process behind many familiar reflector shapes was developed.Following the years after World War II, reflector antennas were in high demand for applications such as long-distance satellite communications, radio astronomy, and increasingly sophisticated high-resolution radar systems. During this time, many of the analytical techniques regarding the optimization of the illumination of a reflector aperture in order to maximize gain, emerged. Reflector antennas are typically capable of providing extremely narrow beamwidths and higher gains than any other single-element configuration. Reflect arrays have also seen substantial development in the last two decades. As the name implies, this antenna is a combination of the most desirable characteristics offered by reflectors and array antennas.On the other hand, lens antennas have also been thoroughly investigated for millimeter-wave applications. A low profile and excellent beamforming capabilities make these antennas suitable for a number of applications (especially in automotive radar), and the development of substrate-integrated waveguide technology has been an important enabler in extending their operation into the millimeter region. Single Feed ReflectorsA parabolic surface (shown in Fig. 5.1) is most often used as a reflector, because it can produce a highly directional pencil beam with very low sidelobe levels. To avoid mechanical steering of the reflector itself (which in many cases can be quite

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Section: Retrodirective Arraysmentioning

confidence: 99%

Reflector and Lens Antennas

Preez

Sinha

2016

Millimeter-Wave Antennas: Configurations and Applications

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“…In this category 'Pon'-type phase conjugator (PC) structures [12] have been extensively investigated. These mixer-based arrangements [12]- [15] make the RDA more flexible, in terms of its physical layout [16], receive and re-transmit frequency offsets [17], and re-transmitted signal capability [18]. However, inherent weaknesses associated with this 'Pon'-type approach include low and non-flat mixer conversion gain, undesired mixing frequency leakage components, and lack of receiver array factor gain.…”

Section: Introductionmentioning

confidence: 99%