Specifications 2.4mm RF Power Sensor Standards.pdf

Requirements / Specification Document

TITLE: 2.4 mm RF Power Sensor Standards

Requesting Laboratory / Division / Group:

Communications Technology Laboratory Radio Frequency Technology Division Guided Wave Electromagnetics Group (672.01)

General Statement of Need:

These are 2.4 mm thermoelectric power sensor standards that are compatible with microcalorimeters. This procurement also includes special standards that are intended to help characterize the microcalorimeter. These items are being acquired as part of an agreement with the Army Primary Standards Laboratory.

Item Specifications and Quantities:

Item 1: RF Power Sensor Standards (Rohde & Schwarz Model NTS50T) Quantity: 4 EACH Specifications: 1.1 Possess a 2.4 mm coaxial connector.

1.2 A radiofrequency (RF) termination with an operating

frequency ranges from DC to 50 GHz.

1.3 RF termination shall have a reflection coefficient magnitude of less than 0.2 across the operating frequency range when referenced to a 50 Ω impedance.

1.4 RF termination shall have a maximum input power of at

least 20 dBm.

1.5 RF leakage from the transfer standard shall be at least 40 dBc below the RF input power across the operating frequency range.

1.6 A DC heater with a maximum input power of at least 20

dBm.

1.7 DC heater shall have a four-wire lead configuration

1.8 DC heater shall have a DC resistance in the range of 50 Ω to

2 kΩ.

1.9 A thermopile to sense heating from RF power dissipation

with a sensitivity of at least 100 mV/W and a thermopile to sense heating from DC power dissipation with a sensitivity of at least 100 mV/W. Heating from both RF and DC power may be sensed with a single thermopile or with one thermopile for the RF termination and one for the DC heater.

1.10 A DC connector that allows direct electrical connections to the DC heater, the thermopile(s), and any auxiliary temperature sensors

1.11 If the transfer standard contains active readout or data storage electronics, it shall be possible to operate the transfer standard without supplying power to these electronics. The RF termination, DC heater, thermopile(s), and any auxiliary temperature sensors shall be operable without supplying power to active readout or data storage electronics.

1.12 Dimensions of less than 100 mm × 50 mm × 50 mm (length × width × height).

1.13 Total mass of less than 100 g.

Item 2: Short-circuit Microcalorimeter Characterization Standard Quantity: 1 EACH Specifications: 2.1 Possess the same design as the RF power sensor standard, with the exception that the element that dissipates RF power is replaced with a short-circuit termination designed to reflect RF power.

Item 3: Open-circuit Microcalorimeter Characterization Standard (Rohde &

Schwarz) Quantity: 1 EACH Specifications: 3.1 Possess the same design as the RF power sensor standard, with the exception that the element that dissipates RF power is replaced with an open-circuit termination designed to reflect RF power.

Item 4: Mismatch Microcalorimeter Characterization Standard (Rohde &

Schwarz) Quantity: 1 Specifications: 4.1 Possess the same design as the RF power sensor standard, with the exception that the element that dissipates RF power is replaced with a termination designed to partially reflect RF power, and partially dissipate RF power.

Procurement Support Information and Ancillary Services:

Section Requirements/Specifications

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Shipping Address:

☒ NIST-Boulder

Mail Stop: 672.01 325 Broadway Boulder, CO 80305

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