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Armms RF and Microwave Society
Book for the Nov 2019 conference »

Conferences

Next Conference:

Monday 18th November to Tuesday 19th November 2019 at Wyboston Lakes, Wyboston

 

Young Engineer Sponsorship: The ARMMS RF & Microwave Society provides sponsorship for young engineers (28 or below) who have had papers accepted for presentation at each meeting. Sponsorship is £200 cash plus free attendance (including conference dinner and overnight accommodation). Potential candidates should identify themselves as eligible at time of submission and state their date of birth. This offer is limited to a maximum of 2 places per meeting.

Best Paper Award: The Steve Evans-Pughe prize is awarded to the best presenter at each meeting. The award is £200 for the best paper and £50 for the runner-up. The prize is sponsored by NI.

If you are interested in submitting a paper for presentation at this conference, please contact the technical coordinator (details below). Papers currently listed below are those already accepted. The deadline for submissions is September 20th. For all other enquiries please email enquiries@armms.org

VENUE

Wyboston Lakes
Great North Road
Wyboston
Bedfordshire
MK44 3AL

Webhttp://www.wybostonlakes.co.uk/

PROGRAMME CO-ORDINATOR

David Morris
Keysight

Tel+44 7768 556234
Emaildavid_morris@keysight.com

PAPERS

Artificial Intelligence design of microwave antennas with case studies

Moyablode Olusola Akinsolu
Gwyndwr University
-

Calibration techniques for on-wafer S-parameter measurements

Xiaobang Shang and Jian Ding
NPL and Filtronic

Accurate characterisation of S-parameters (scattering parameters) at chip level is of great importance to the development of next generation electronic devices. Such measurements are usually carried out on a Vector Network Analyzer (VNA), subject to an on-wafer calibration. Calibration techniques play a key role in determining the accuracy of on-wafer measurements. This presentation is intended to provide an overview of conventional calibration techniques, including TRL (Thru, Reflect, Line), Multi-Line TRL, and SOLT (Short, Open, Load, Thru), etc. New SOLT calibration method (using a 10-term error model), developed by NPL, will also be reported. Advantages and limitations of these different calibration techniques will be discussed and summarised. Additionally, this presentation will give an insight into other important factors, related to on-wafer measurements at millimetre-wave frequencies. These factors include design of calibration standards, repeatability of on-wafer measurements, impact from testing environment, etc.


Development of a Spherical Near Field Measurement System for Phased Array Antenna?s

Dipendra Mistry
Phasor Solutions

Near-Field measurement of antennas has gained popularity over the last few decades. This is due to its ability to provide excellent measurement accuracy in controlled lab conditions, without the complexities of testing in an outdoor range. A common application for this technique is the calibration and measurement of phased array antennas in the far-field. After array calibration the phased array antenna will beam-form a radiation pattern in the desired given direction across a range of operating conditions.


Direct S-Band Communication Using Xilinx's RFSoC and Design-In of its Microwave Interfaces

Rajan Bedi
SpaceChips

"Xilinx's RFSoC is a single-chip solution combining RF ADCs and DACs with a 16 nm, Zynq UltraScale+ MPSoC capable of implementing a complete software-defined radio including direct IF/RF sampling at the receiver and direct IF/RF re-construction at the transmitter.

12-bit, 4 GHz ADCs are available capable of sampling up to 2.058/4 GSPS allowing direct digitisation of UHF, L and S-band carriers within this input bandwidth, as well as 14-bit, 4 GHz DACs sampling up to 6.554 GSPS allowing reconstruction of IF/RF signals and direct up-conversion to the second Nyquist zone within this output bandwidth.

Portable, ground terminals for satellite communication and M2M applications are baselining RFSoC because it offers the potential to produce small, low-power, highly-integrated transceivers. Many companies struggle with designing the analogue, microwave interfaces before and after theRF ADCs and DACs respectively. Broadband impedance matching, passive or active, single-ended or differential circuitry before and after the mixed-signal convertors, as well as RF simulation and synthesis, are key challenges for today's digital-centric engineers."


Microwave S-parameter calibration techniques and their uncertainty

Dilbagh Singh
NPL

This paper discusses techniques for calibrating vector S-parameter network analysers and uncertainties associated with the measurements due to the calibration techniques.  The paper discusses different calibration methods and their typical applications and then a number of devices are measured using the same equipment, calibrated with different methods and the measured results are presented.  The investigation has been carried out over 100 MHz and 26 GHz, which covers many of today’s RF/Microwave applications.  Six different types of calibrations have been investigated on a number of one-port and two-port devices.  The measured uncertainty is also compared to the UK’s Primary Impedance Microwave Measurement System.


Millimeter-Wave Beamformer Chips with Smart-Antennas for 5G: Toward Holistic RFSOI Technology Solutions including RF-ADCs

Sidina Wane
eV Technologies

This paper presents RFIC MIMO modules integrating beamformer chips (including PAs, LNAs, T/R switches, power combiners/dividers and digital controls) and smart-antenna arrays including down-converters for 5G. Several solutions: 2x2 (16 antennas) and 4x4 (64 antennas) arrays of RFIC beamformer chips are designed, fabricated and experimentally characterized. Wireless 5G links with real-time high data rate video-streaming capabilities are demonstrated using integrated cameras. Field-Field correlation-based over-the-air near-field and far-field test solutions with and without down-conversion are proposed for MIMO/Massive-MIMO phased-array systems both in frequency and time domains. Cognitive BIST solutions are combined with co-array signal-processing. Perspectives for holistic RFSOI technology solutions, including RF-analog-to-digital converters (RF-ADCs) and adaptive body-biasing systems, are drawn in comparison with BiCMOS, GaAs and GaN based technologies.


Multi-port Amplifier fed Linear Array

Peter James
Airbus

The object of this paper is to describe the  possibility of feeding a linear array with a pair of MPAs, so that a variable amplitude taper can be applied to the array.  This may be achieved by switching edge elements off completely or giving them relatively low amplitude, whilst at the same time using all the amplifiers at or near their maximum. Hence the array may be used most efficiently. The aim of this paper is to show that a pair of 8x8 MPAs may feed a linear array. It will also present some predictions of the radiation patterns.


Provision of UK GaN MMIC capability for X-band applications

Matthew Okeefe
INEX
-


SPONSORSHIP

The society would like to thank RFMW and Qorvo for sponsoring the November 2019 meeting:


CALL FOR PAPERS

Contributions are invited with an emphasis on RF and microwave design, research, testing and associated subjects. An oral presentation will be made at the meeting and a written paper will be required for publication in the society digest, which is distributed to delegates at the meeting. Prospective speakers are requested to submit a title and a short abstract to the technical coordinator (see above) as soon as possible.

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