TITLE

Lock-in amplifier with autotracking bandpass filter

AUTHOR(S)
Sato, A.; Ohara, A.; Ogawa, Y.; Suzuki, M.
PUB. DATE
November 1996
SOURCE
Review of Scientific Instruments;Nov96, Vol. 67 Issue 11, p4021
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Describes a simple, low-cost lock-in amplifier. Autotracking bandpass filter that automatically synchronizes the amplifier's center frequency; Applications of lock-in amplifiers in the measurement of very small acquired current signals.
ACCESSION #
4321044

 

Related Articles

  • Patents: Bipolar output carrier magnetic amplifier, paten No.2,808,520. John Presper Eckert, Jr....  // Electronic Design;01/26/98, Vol. 46 Issue 2, p64F 

    Focuses on the magnetic amplifier with the use of single output winding on the magnetic core. Reference to the carrier frequency source being coupled to one end of the output winding; Further information on the magnetic amplifier.

  • Tunable Filters Screen 0.1 To 3.0 GHz.  // Microwaves & RF;Jul2014, Vol. 53 Issue 7, p96 

    The article evaluates the tunable band-stop and bandpass filters from Fairview Microwave Inc.

  • UWB Bandpass Filter Includes Notched Band. XIA XINLIN; YU LIU; YANG TAO // Microwaves & RF;Oct2016, Vol. 55 Issue 10, p75 

    The article offers brief information related to the ultrawideband (UWB) Bandpass Filter, which was authorized for commercial radio use at low transmit levels in 2002.

  • Pacific Antenna Easy Audio Bandpass Filter Kit. Danzer, Paul // QST;Jan2017, Vol. 101 Issue 1, p62 

    The article evaluates the Easy Audio Bandpass Filter Kit from Pacific Antenna.

  • Resonant Quasi-Periodic Structure for Rectangular Waveguide Technology with Wide Stopband and Band-Pass Behavior. Arregui, Ivan; Teberio, Fernando; Arnedo, Israel; Percaz, Jon Mikel; Gomez-Torrent, Adrian; Chudzik, Magdalena; Laso, Miguel A. G.; Lopetegi, Txema // Progress in Electromagnetics Research C;2016, Vol. 69, p97 

    In this paper, a novel quasi-periodic structure for rectangular waveguide technology is proposed. The constituent unit cells of the structure feature a resonant behavior, providing high attenuation levels in the stopband with a compact (small period) size. By applying a smooth taper-like...

  • Variable bandpass filter with high rejection ratio for Raman scattering. Huang, Yihe; Yu, Peter Y. // Review of Scientific Instruments;Jan1988, Vol. 59 Issue 1, p190 

    A variable bandpass filter with a stray light rejection ratio as good as 10-8 is described. The applications of this filter in removing elastically scattered laser light from poor quality sample surfaces in Raman scattering are discussed.

  • Attenuation Properties of Fontainebleau Sandstone During True-Triaxial Deformation using Active and Passive Ultrasonics. Goodfellow, S.; Tisato, N.; Ghofranitabari, M.; Nasseri, M.; Young, R. // Rock Mechanics & Rock Engineering;Nov2015, Vol. 48 Issue 6, p2551 

    Active and passive ultrasonic methods were used to study the evolution of attenuation properties in a sample of Fontainebleau sandstone during true-triaxial deformation. A cubic sample of Fontainebleau sandstone (80 mm $$\times$$ 80 mm $$\times$$ 80 mm) was deformed under true-triaxial stresses...

  • HF Voltage-Controllable Band-Pass Filter Based on Varactor. Shengqian Ma; Changrong Zhao; Yanping Ji // Applied Mechanics & Materials;2014, Vol. 631-632, p327 

    Varactor to replace commonly variable capacitance is applied to the tuner. This paper presents the voltage-controllable band-pass filter design method. The filter constitutes of operational amplifier, resistors, varactor MV209 and parallel LC resonant circuit. Center frequency range of the...

  • An Ultra Wideband CMOS Power Amplifier with Active Input Matching. Zheng-De Huang; Zhi-Ming Lin // International MultiConference of Engineers & Computer Scientists;2007, p352 

    This paper presents the design of a full-band power amplifier (PA) for ultra wideband (UWB) application. This PA uses common-gate topology at the input stage to achieve a wideband input matching. Less than -11 dB S11 over the entire bandwidth was obtained. A cascode stage and a Chevbyshev...

  • Tri-band Bandpass Filter using Open Loop Resonator Loaded by One Stub with Three Branches. Xingbing Ma; Fengshan Zhang; Caifeng Liang // Applied Mechanics & Materials;2014, Issue 513-517, p2791 

    To obtain an adjustable passband filter, one open stub with three branches is loaded on an open loop resonator. The first and the third passband frequencies of the tri-band filter can be flexibly controlled by tuning lengths of three branches, whereas the second passband frequency is fixed. The...

Share

Read the Article

Courtesy of

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics