Next generation communication standardization is calling for more flexibility with an access to higher carrier frequencies and wider instantaneous bandwidth. We propose to tackle these challenges by introducing wideband data converter solutions capable to directly access the microwave spectrum up to Q-band $(40 \mathrm{GHz})$. After a proof of concept presented at EuMW 2021, a product has been developed based on a $2^{\text {nd }}$ generation $T / H$ die, and a specially developed ADC die in $28 \mathrm{~nm}$ process, thus allowing for a dramatic power reduction, cutting down the overall power to $2.5 \mathrm{~W}$. These two dice have been assembled in a dedicated FCBGA package to offer optimal performances with a tight power budget in a reduced footprint. With a $B_{-3 d B}$ of 32GHz at $\mathrm{T} \mathbf{j}=100^{\circ} \mathrm{C}$, the measurement frequency has been extended up to the beginning of the Q-band $(40 \mathrm{GHz})$. Performance of SFDR, $\mathrm{SNR}, \mathrm{THD}$ and ENOB are shown in X-, Ku-, and Ka-band, at a sample rate of 12.8GSps.

Next generation communication standardization is calling for more flexibility with an access to higher carrier frequencies and wider instantaneous bandwidth. We propose to tackle these challenges by introducing wideband data converter solutions capable to directly access the microwave spectrum at Q-band (40 GHz). A proof of concept of a wideband sampling solution built from an original microwave sampler design based on a track-and-hold amplifier combined with interleaved ADCs on a single RF package substrate has been realized. With a BW −3dB of 28 GHz, the measurement frequency has been extended up to the beginning of the Q-band (40 GHz). Performance of SFDR, SNR, THD and ENOB are shown in X-, Ku-, Ka-, and Q-band, at a sample rate of 11 GSps.

Designers of microwave systems are constantly looking for DACs which provide not only large Nyquist zones (>2.5 GHz), but also offer flat frequency response in these large instantaneous bandwidths. Such DACs allow simplifying the architecture of the complete microwave generation system, thus saving costs. This paper covers the performance of a new generation DAC with a working range up to the K-band. A number of applications of this part will be discussed preliminary to a review of the aspects of interfacing to this component in the digital and analogue domains. Typical single tone and broadband measurement results are proposed in the last part.

Designers of Microwave systems are constantly looking for DACs which provide not only Nyquist zones larger than 2.5 GHz but which also offer flat frequency response in these large instantaneous bandwidths, and in addition which also generate these signals with a centre frequency that is in the frequency band of interest. The component's performance can have strong implications in how microwave systems such as radar, communication systems and instrumentation systems are designed.This paper presents a prototype of a high speed, high bandwidth Digital to Analogue Converter with high sample rate and high output bandwidth which enables the direct conversion of signals to frequencies up to 10GHz with instantaneous bandwidths of up to 3GHz. It describes the component structure, applications for the component and prototype results are given.

The ability of the new generation of Digital to Analog Converter (DAC)s to convert from a digital signal directly into high frequency bands can be seen as a large leap in capability allowing greater system flexibility, reduction in component footprint and power consumption.This paper presents a new high speed, high bandwidth Digital to Analog Converter with high sample rate and high output bandwidth which enables the direct conversion of signals to frequencies up to band X. The component features a number of innovative design features which enable the optimization of performance in the different Nyquist zones. These include various output shaping schemes and interface methods. Results will be presented which show the performance of the circuit at output frequencies greater than 8GHz.The component's performance can result in highly flexible and waveform agile Radar signal generation systems.

SAR equipment can now benefit from direct conversion techniques. This paper will present some new components which facilitate direct conversion to and from Land S bands, these include :Single core, 10 and 12 bit Analog to Digital converters (ADC) with a sample rate of 1.5GSps and an analog bandwidth of 2.3GHz giving excellent performance in the L band;A Digital to Analog converter (DAC) with a 3GSps sample rate and an analog output bandwidth limit of 7GHz. This allows direct conversion techniques up to 'C' band. The component has a number of different output modulation schemes and these are used to optimize the system performance depending on the frequency used.These components will be described in detail and applications using these components will be highlighted.

This paper presents the new Passive Radar and Signal Intelligence signal chain possibilities that are created by the latest 12-bit 4.5GSPS ADC development. It focuses on a new high speed, high resolution Analog to Digital Converter (ADC) with high input bandwidth which enables the direct RF down conversion up to S-band. It allows new perspectives for application such as Passive Radar and Signals Intelligence.

This work presents a new high speed, high bandwidth Digital to Analog Converter (DAC) which enables the direct conversion of wideband Radar chirp waveforms to frequencies up to band X.The component features a number of innovative design features which enable the optimization of performance in the different Nyquist zones. These include various output shaping schemes and interface methods. Preliminary results are provided which show the performance of the circuit at output frequencies greater than 7GHz.Digital chirp patterns have been created for this component and the results of these patterns output by the DAC are presented along with the ability of the component in high speed switching applications.The component's performance can result in highly flexible and waveform agile Radar signal generation systems.

Interleaving multiple ADCs is a useful technique for increasing overall conversion sample rate, however precautions must be taken when using the technique. This paper discusses the issues and parameters that need to be accounted for in the employment of interleaved conversion systems.The paper then describes a new quad data acquisition component for communication and instrumentation systems. The EV8AQ165 is a high bandwidth, high sample rate, 4 core converter. The converter can sample at 5GSps in interlaced mode and has an input bandwidth of 3.2GHz.Features of this component will be presented along with characterization results and its use in communication systems will be highlighted.

New components for direct conversion Radar systems have been introduced, these include: A single chip, 10 bit Analog to Digital converter (ADC) with a sample rate of 3GSps and an analog bandwidth of 5GHz giving a usable bandwidth of 1.5GHz in the L and S bands;A Digital to Analog converter (DAC) with a 3GSps sample rate and an analog output bandwidth limit of 7GHz. This allows direct conversion techniques up to `C' band. The component has a number of different shaping schemes and these are used to optimize the system performance depending on the frequency used.Results from these components will be presented and a direct conversion Ultra Wide Band (UWB) Radar system design will be proposed. The factors limiting the sample rate and bandwidth of these components will be highlighted and techniques to extend the performance such as an external sample and hold and time interleaving will be presented.

New data aquistion components for direct conversion array radar systems have been introduced, these include: A 10 bit Analog to Digital converter (ADC) with a sample rate of 3GSps and an analog bandwidth of 5GHz giving a usable bandwidth of 1.5GHz in the L and S bands; A 12 bit Analog to Digital converter (ADC) with high performance in the L band. A 5 bit ADC with a sample rate of 20GSps and an analog bandwidth of 8GHz. Results from these components will be presented and their features, useful in array antenna systems, will be highlighted.

This paper will describe the architecture and results obtained with two new e2v products designed for Space grade applications which open up new design possibilities for direct conversion of signals to and from L band.