Rb oscillator. A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine transition of electrons in rubidium -87 atoms is used to control the output frequency. It is the most inexpensive, compact, and widely produced atomic clock, used to control the frequency of television stations, cell phone base stations, in test equipment, and global navigation satellite systems A compact, low-profile, single-port antenna covering two broad bands from 800 MHz to 1 GHz, and 1.7 GHz to 2 GHz. This antenna is circularly-polarized with fixed scan angle of 30. It has been qualified for airborne intelligence, surveillance and reconnaissance (ISR) applications.

Pendulum

The GPS-12RG is compact, lightweight and has an internal battery option to maintain stability during transportation or to allow fi eld use without access to AC mains for over 2 hours. It is now possible to transport an atomic frequency standard into the fi eld and have instant access to the full stability, with zero warm-up time.

A compact direct digital frequency synthesizer (DDFS) for system-on-chip implementation of the high precision rubidium atomic frequency standard is developed. For small chip size and low power consumption, the phase to sine mapping data is compressed using sine symmetry technique, sine-phase difference technique, quad line approximation

The compact versatile frequency converter SINAMICS G120C The SINAMICS G120C combines an extremely compact design with integrated safety function and a wide range of functions for diverse applications. With seven frame sizes, it covers a power range from 0.55 to 132 kW. Configure and order SINAMICS G120C quickly and easily

Rubidium Miniature Atomic Clock (MAC - SA.3Xm) features compact design and low power consumption. Cost effective, and easily adaptable to a wide variety of timing and synchronization applications, Microsemi's SA.3Xm is the world's first commercially available atomic clock. The SA.3Xm is designed for applications where an economical solution for frequency stability is required.

Figure 2: Top Left: Inside the enclosure containing the 10 MHz Rubidium frequency reference. The Efratom LPRO-101 unit is partially visible in the background, mounted to the lid. The LM2577-12 19 volt up-converter can be seen soldered to the circuit board mounted to the wall of the box.

GLONASS/GPS

The GPS-12RG is compact, lightweight and has an internal battery option to maintain stability during transportation or to allow fi eld use without access to AC mains for over 2 hours. It is now possible to transport an atomic frequency standard into the fi eld and have instant access to the full stability, with zero warm-up time.

The design, realization, and characterization of a compact magnetron-type microwave cavity operating with a TE011-like mode are presented. The resonator works at the rubidium hyperfine ground-state frequency (i.e., 6.835 GHz) by accommodating a glass cell of 25 mm diameter containing rubidium vapor. Its design analysis demonstrates the limitation of the loop-gap resonator lumped model when

The SA.3Xm is designed for applications where an economical solution for frequency stability is required. Requiring little power, and able to operate across a wide spectrum of temperatures, the SA.3Xm is an ideal choice for wireless base stations, telecom networks, and test and measurement devices requiring the precision of a rubidium oscillator.

For the ultra-stable rubidium oscillator in the 910R, there is no measurable difference between the stability in Disciplined and Hold-Over mode, for averaging times up to 1000 s. Designed for portability too. When using Manual Hold-Over Mode, the 910 or 910R act as a stand-alone OCXO or rubidium frequency standard.

Traditional rubidium atomic frequency standard is of the rubidium gas cell type. It is small, light, inexpensive for the absent of vacuum system, magnet poles or atomic beams. However, because of the poor accuracy and large frequency shifts, rubidium gas cell clock is used as secondary standard.

Description. This compact rubidium frequency standard is the commercial Model FRK, first made by Efratom Elektronik, Munich, Germany, and later by Efratom California in Irvine, Ca. Gerhard Hbner and Ernst Jechart established the firm in 1971 and a year later supplied examples of the clock to the Naval Research Laboratory (NRL), Washington, D.C., for inclusion on NTS-1, the first of the Navigation

The Quartzlock E10-P is a low cost, compact portable rubidium frequency reference capable of operating from an external plug top supply DC or internal batteries. With Quartzlocks SMAC rubidium oscillator at the heart of this instrument it provides the user with a precise frequency reference whereever required, capable of operating for hours

Traditional rubidium atomic frequency standard is of the rubidium gas cell type. It is small, light, inexpensive for the absent of vacuum system, magnet poles or atomic beams. However, because of the poor accuracy and large frequency shifts, rubidium gas cell clock is used as secondary standard.

Frequency stabilization of a frequency

Frequency stabilization of a frequency-doubled 1556-nm source to the 5S 1 2! 5D 5 2 two-photon transitions of rubidium A. Danielli, P. Rusian, and A. Arie Department of Electrical Engineering–Physical Electronics, Tel Aviv University, Tel Aviv 69978, Israel M. H. Chou and M. M. Fejer

We propose a compact planar passband frequency selective surface (FSS) operating at the resonance frequency of 3.81 GHz. The proposed FSS is composed of single layer of the Archimedean spiral type with the interdigital capacitance between the corners of metallic patches printed on one side of the substrate. Compared to the operating wavelength, the size of the proposed single layer FSS is 0

Bottom Left: Inside the 10 MHz rubidium frequency reference using the FE-5680A. On the left, mounted in the lid, is the FE-5680A and inside the box is the switching voltage converter (near the top) and the 10 MHz filter/distribution amplifier and status indicator near the bottom.

Jan 01, 2016The frequency of the reference laser is locked on a rubidium transition, the master laser is frequency locked on the reference one by the method of beat locking. The master laser is power amplified firstly by the erbium-doped fiber amplifier (EDFA), and then frequency doubled by using a periodically poled lithium niobate (PPLN) crystal to

Sep 24, 2016The UB351/352 GPS/GLONASS/BDS tri-system penta-frequency OEM boards are based on Unicore's mature multi-GNSS system on chip (SoC). UB351/352 both use a low-power consumption design, support multipath mitigation and offer millimeter-level carrier-phase observations with centimeter-level RTK positioning accuracy.

Combining light modulation and frequency conversion techniques, a compact and simple frequency-stabilized optical frequency comb spanning over 45 nm in the 1.56-μm wavelength region is demonstrated. It benefits from the high-frequency stability achievable from rubidium atomic transitions at 780 nm probed in a saturation absorption scheme, which is transferred to the 1.56-#x3BC;m

Optical Quantum Technologies for Compact Rubidium Vapor-Cell Frequency Standards in Space using Small Satellites A. N. Dinkelaker et al. (2019), JBIS, 72, pp.74-82 Refcode: 2019.72.74 Keywords: Optical clock, Rubidium, Two-photon transition, Diode lasers, Quantum technology, Small satellite mission, Modular satellite Abstract: As part of the phase 0/A of the QUEEN mission, we evaluated our

Jan 01, 2016The frequency of the reference laser is locked on a rubidium transition, the master laser is frequency locked on the reference one by the method of beat locking. The master laser is power amplified firstly by the erbium-doped fiber amplifier (EDFA), and then frequency doubled by using a periodically poled lithium niobate (PPLN) crystal to

PTICALLY pumped gas cell atomic frequency standards (often referred to as Rubidium clocks) [1] represent a well-established type of secondary frequency reference, which offers competitive frequency stabilities up to medium-term timescales (∼ days) in compact volumes around 0.25 to 2 L. Industrial realizations of such clocks find applications in

The GPS-12RG is compact, lightweight and has an internal battery option to maintain stability during transportation or to allow fi eld use without access to AC mains for over 2 hours. It is now possible to transport an atomic frequency standard into the fi eld and have instant access to the full stability, with zero warm-up time.

compact rubidium frequency standard, as a result of their better effectiveness in the optical pumping process. The change of the optical pumping source fromthe lamp to the laser can in principle produce major improvement on the clock stability. However, despite intense efforts worldwide [1]–[6], no laser pumped rubidium vapor cell frequency