Attachment 2 - Detailed Specifications.pdf

Detailed Product Specifications for 12 GHz Vector Signal Generator CTL/Quantum Communications Division

Scalable Quantum Computing Group

Statement of Need:

The Government requires 2 precision vector signal generators with quadrature modulated output (I/Q) and a high dynamic range (output power range: -110 dBm to +15 dBm). Both generators are needed to synthesize pulsed microwave frequencies in the 100 MHz to 12 GHz band. The type of I/Q modulated pulses we need requires a modulator with 500 MHz bandwidth or higher. In some applications, these generators need to be interconnected to each other and “phase-locked” so their outputs remain synchronized over a time period of days.

We have found that to accomplish this, the phase-locking must be to a 1 GHz (or higher) frequency clock (reference frequency input and output). The synthesizers must also have a small physical size so we can fit many in a single electronics rack but also have the flexibility to move them individually wherever needed, so a single unit with 2 I/Q channels (4 channels total) is not acceptable. We require that both systems are from the same manufacturer for compatibility with remote programming and operation and with phase-locking

1) Minimum Specifications: Rhode & Schwarz SGS100A brand name or equal

a. Electrical Specifications

i. Vector signal generator with an integrated quadrature (I/Q) modulator.

ii. Source can also be used to provide continuous wave signals.

iii. Frequency range: 100 MHz to 12 GHz

iv. Frequency error: < 0.1 PPM.

v. Output power: -120 dBm to +15 dBm

vi. Pulse generator: single or double pulse, triggered, pulse width: 20 ns to 100 s, 10 ns resolution, pulse period: 100 ns to 100 s.

vii. I/Q modulator: bandwidth > +/- 500 MHz for 2 GHz - 12 GHz.

viii. Spectral purity (@ > 0 dBm output): <-30 dBc harmonics, <-50 dBc nonharmonics, <-60 dBc subharmonics, wideband noise <- 130 dBc.

ix. SSB phase noise (20 kHz carrier offset, 1 Hz measurement bandwidth): <-100 dBc.

x. Fast setting time (remote operation): less than 1 ms.

xi. RF 50 ohm SMA input/output/trigger/reference clock connections

xii. Reference frequency clock (input/output): 1.0 GHz or higher

xiii. Stability of reference frequency: < 1 PPM, locking range: +/- 10

PPM.

xiv. Manual control (limited) through front panel

xv. External software for remote control of multiple instruments

(Ethernet and USB compatible)

xvi. Standard 110 V 60 Hz AC input

Product Specifications for 3 Microwave VSGs

xvii. Power consumption < 100 W.

b. Physical dimensions

i. The synthesizers must also have a small physical size so we can fit many in a single electronics rack but also have the flexibility to move them individually or in pairs wherever needed, so a single unit with 3 I&Q channels (6 channels total) is not acceptable.

ii. Small form factor: maximum size of 19” by 1U high.

iii. Weight < 15 lb.

c. Environmental specifications

i. 0 C – 40 C ambient

ii. Short warm-up time: less than 15 minutes.

d. The equipment must be new (not refurbished or reconditioned) and covered by the original manufacturer’s full warranty with service provided by that manufacturer’s U.S.-based service organization.

2) Testing NIST will inspect and test the parts. Final inspection and performance evaluation will take place in our laboratory within 14 days of delivery.

The following measurements will be made on appropriate test circuits/systems:

a. test if the I/Q modulator bandwidth is at least 500 MHz for carrier frequencies from 2 GHz to 12 GHz

b. test remote programming of the system with communication through at least USB and Ethernet.

c. test the low phase noise performance (< -100 dBc at 10 Ghz)

d. test the high power output (15 dBm) with 0.1 dB resolution and the low power output to the limits of our resolution.