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This paper presents a 60 GHz wafer-scale transmit phased-array with 256-elements spaced λ/2 apart in the x and y directions, and occupying an area of 4.14×4.2 cm2 (1740 mm2). The phased array is built using independent RF, transmission-line and control circuit blocks which are stitched together to form an aggregate chip which is much larger than a standard reticle (22×22 mm2). This method allows for...
We propose a new concept of an active phased array antenna (APAA) system that realizes multi-frequency and multi-modulation beam forming simultaneously in an array. The proposed APAA system consists of RF modules including an RF signal generator. A distributed array radar system with the proposed configuration can be simplified by not transmitting a signal in RF at the interconnect equipments of modules...
A System on a Chip (SoC) is presented with the end application being RF and digital control of an Active Array Electronically Scanned Array (AESA) Antenna. The design is implemented using IBM's SiGe 5HP process. The device operates across X-Band in both transmit and receive and maintains a gain flatness of 0.5 dB across the band in transmit and has 12 dB of linear gain in receive. The design also...
We demonstrate the increase of available collector emitter voltage of integrated vertical bipolar transistors by means of an additional lateral drift region introduced between sub collector and collector contact region. The chosen approach enables the fabrication of high voltage bipolar transistors for RF power applications alternatively to the construction of deep collector wells in vertical direction...
For the first time, a transmit-receive (TR), 64-element phased array fully driven by Silicon Germanium (SiGe) integrated circuits and implemented on organic substrates is demonstrated at 9.5GHz. The array was realized on a duroid and liquid crystal polymer substrate stack-up. The radiating elements are driven by SiGe-based TR modules and power amplifiers. Additionally, radio-frequency micro-electromechanical...
A digital beamforming (DBF) prototype that uses compact and low cost Balanced Antipodal Vivaldi Antenna (BAVA) array and SiGe based-receiver is presented. An example is given for a Ku-band DBF system that demonstrates simultaneous reception of two or more full motion videos in a portable device.
Switching-mode power amplifiers are used in applications where linearity is not critical and efficiency is the utmost priority e.g. phased arrays. This paper presents the design of a differential class-E amplifier for a phased array radar application in 0.25 mum SiGe BiCMOS technology. The operating frequency range is 2.9 GHz to 3.1 GHz with center frequency at 3 GHz. The design approach of the amplifier...
An air-cooled, 128 T/R Channel Panel Array that is 7.4 in. times 10.1 in. times 0.21 in. thick and weighs 2.2 lbs. has been designed and fabricated. The Panel Array is the ldquobuilding blockrdquo or Line Replaceable Unit (LRU) for a modular/ scalable Phased Array for Radar or Communications. The Panel Array reduces cost by leveraging high volume commodity manufacturing across a range of design requirements...
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