Early development of phased array radar and active antennas in the Netherlands

This paper addresses the early developments that have resulted in the design and development of active electronically scanned arrays (AESA) in The Netherlands. An early type of radar measuring the position of objects in range, azimuth and elevation in three dimensions (SPS-01/MTTR) is described in some detail. Requirements of the Royal...

25 Years of MMICs for Phased Arrays at TNO

Space-Time Block Coding waveform for suppression of jamming in a MIMO radar

In a phased array radar which uses Multiple Input Multiple Output (MIMO) techniques, each (group of) element(s) transmits a different waveform. This extra degree of freedom in the design of a phased array radar potentially yields an advantage for improved suppression of sidelobe clutter and jamming. In this paper a Space-Time Block Coding (STBC)...

S-band class-F power amplifier with integrated switched mode power supply

An S-band radar transmitter MMIC is reported containing a class-F power amplifier and a switched mode power supply. The integration of the power supply offers the possibility to optimize the power amplifier bias voltage for each individual device in a AESA antenna. This has several advantages such as amplitude tapering with preservation of...

A Silicon-Germanium Single Chip Receiver for S-band Phased Array Radars

A Silicon-Germanium single chip receiver has been developed for S-band phased array radars with 2-D digital beamforming. The complete receiver chain from the S-band RF input up to the low-IF output has been integrated on a single SiGe chip. The only external components required to complete the receiver are an RF limiter for protection against...

Threats and protection for electronically-steered array radars

Front-end power overload protection is a vital issue in any electro-magnetic sensor. The issues around active electronically-steered arrays are more recent and pose new threats. Different categories of threats can damage the sensitive electronics in the phased-array radar, like hostile high power electro-magnetic (HPEM) pulses or the radar’s own...

Phased arrays of compact waveguide radiators and frequency selective surfaces: A multi-mode equivalent network approach

The current trend for radar array antennas requires increased integration, as well as large bandwidth, for multifunction systems, and frequency/angular selectivity properties for structural integration on military platforms, like ships and aircrafts, with low radar cross section (RCS). We have presented a review of the potentialities offered by...

Design issues of an open scalable architecture for active phased array radars

An open scalable architecture will make it easier and quicker to adapt active phased array radar to new missions and platforms. This will provide radar manufacturers with larger markets, more commonality in radar systems, and a better continuity in radar production lines. The procurement of open scalable active phased array radars becomes...

The PHARUS System: An Overview and Recent Developments

The PHARUS system is a fully polarimetric C-band SAR wíth an active phased array anrenna. PHARUS is an experimental system. It is meant for remote sensing research in many application areas, both civil and military, maritime and on land. The system performed its first test flight in 1995. In the following years a large amount of data was...

Compact Photonic Integrated Phase and Amplitude Controller for Phased-Array Antennas

Feasibility of an extremely compact photonic integrated circuit for controlling phase and amplitude of a 16- element phased-array microwave antenna has been demonstrated experimentally

Landuse classification using PHARUS polarimetric SAR

A classifier is developed in which the polarimetric component of SAR measurements can be weighed relative to the absolute amplitude of the measurements. For a carefully selected weight, this classifier is shown to perform nearly as well as the optimum Bayes classifier. Applying the developed classifier to radar measurements from the PHARUS...

An Efficient Scheduling Algorithm for a Multifunction Radar

The new generation of air defence frigates has to be equipped with a high performance sensor suite to cope with the threat in future maritime scenarios. A multifunction radar (MFR) with a single rotating or multiple fixed phased array antennas is often the key element in this sensor suite because it can perform not only surveillance functions...