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Frequencies or wavelengths that can pass through a filter
A passband is the range of frequencies or wavelengths that can pass through a filter. For example, a radio receiver contains a bandpass filter to select
Passband
Range of usable frequencies
hertz (symbol Hz). It may refer more specifically to two subcategories: Passband bandwidth is the difference between the upper and lower cutoff frequencies
Bandwidth_(signal_processing)
Range of frequencies occupied by an unmodulated signal
will have a high ratio bandwidth. A modulated baseband signal is called a passband signal. This occupies a higher range of frequencies and has a lower ratio
Baseband
Frequency response boundary
boundary between a passband and a stopband. It is sometimes taken to be the point in the filter response where a transition band and passband meet, for example
Cutoff_frequency
Transfer of data over a communication channel
passband analog transmission, they are communicated by a limited set of continuously varying waveforms, using a digital modulation method. Passband modulation
Data_communication
Type of analog linear filter in electronics
phase response), which preserves the wave shape of filtered signals in the passband. Bessel high-pass and low-pass filters are often used in audio crossover
Bessel_filter
Type of analog or digital filter
that have a steeper roll-off than Butterworth filters, and have either passband ripple (type I) or stopband ripple (type II). Chebyshev filters have the
Chebyshev_filter
Miniature RF connector
Production history Designed 1991 Manufacturer Hirose Electric Group General specifications Diameter 2.0 mm (0.079 in) Cable Coaxial Passband Typically 0-6 GHz
Hirose_U.FL
Type of signal processing filter
designed to have a frequency response that is as flat as possible in the passband. It is also referred to as a maximally flat magnitude filter. It was first
Butterworth_filter
European Space Agency scientific satellite
astrometric observations. They were made in a broad-band visible light passband, specific to Hipparcos, and designated Hp. The median photometric precision
Hipparcos
Signal processing filter
processing filter with equalized ripple (equiripple) behavior in both the passband and the stopband. The amount of ripple in each band is independently adjustable
Elliptic_filter
When a message's bandwidth significantly exceeds the system's coherence bandwidth
operating characteristics over a very wide passband. It is distinguished from broadband antennas, where the passband is large, but the antenna gain and/or
Wideband
Mathematical transformation reducing the damage caused by aliasing
CD audio with high-resolution audio. CD audio filters the signal to a passband edge of 20 kHz, with a stopband Nyquist frequency of 22.05 kHz and a sample
Anti-aliasing_filter
Filter that rejects signals outside a certain range
allows through components in a specified band of frequencies, called its passband but blocks components with frequencies above or below this band. This contrasts
Band-pass_filter
Process of varying one or more properties of a periodic waveform
higher frequency band occupied by the modulated carrier is called the passband. Signal modulation techniques are fundamental methods used in wireless
Signal_modulation
Filters for an optical system
In astronomy, a photometric system is a set of well-defined passbands (or optical filters), with a known sensitivity to incident radiation. The sensitivity
Photometric_system
filter is a type of filter used in a HF radio receiver that limits the passband in the early stages of the receiver electronics. It blocks strong signals
Roofing_filter
Band of frequencies between specified limits
may typically be a value between 20 and 120 dB higher than the nominal passband attenuation, which often is 0 dB. The lower and upper limiting frequencies
Stopband
Determination of light intensities of astronomical bodies
recording the light energy with a photosensitive instrument. Standard sets of passbands (called a photometric system) are defined to allow accurate comparison
Photometry_(astronomy)
Logarithmic measure of the brightness of an astronomical object
magnitude is a measure of the brightness of an object, usually in a defined passband. An imprecise but systematic determination of the magnitude of objects
Magnitude_(astronomy)
Signal processing technique in telecommunications
frequencies clustered around the carrier frequency, this is called the passband of the channel. Similarly, additional baseband signals are used to modulate
Frequency-division multiplexing
Frequency-division_multiplexing
Radio signal transmission method
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Frequency-hopping spread spectrum
Frequency-hopping_spread_spectrum
Rate of modulation of a digital signal
described as either a pulse in digital baseband transmission or a tone in passband transmission using modems. A symbol is a waveform, a state or a significant
Symbol_rate
Radio communication system implemented in software
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Software-defined_radio
Color of an astronomical object
sensitive to visible (green-yellow) light (see also: UBV system). The set of passbands or filters is called a photometric system. The difference in magnitudes
Color_index
Coaxial cable connector
pin Type RF coaxial connector General specifications Diameter Male: 0.312 in (7.9 mm) HEX Cable Coaxial Passband Typically 0–18 GHz, some up to 26.5 GHz
SMA_connector
Device for suppressing part of a signal
maximally flat frequency response in the passband. Bessel filter, has a maximally flat phase delay in the passband. Elliptic filter, has the steepest cutoff
Filter_(signal_processing)
Classification type of a class of astronomical objects
asteroids, the three basic filters are: U: passband for the ultraviolet light, (~320-380 nm, mean 364 nm) B: passband for the blue light, including some violet
Asteroid_spectral_types
Data communications modulation protocol
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Frequency-shift_keying
Type of radio frequency connector
General specifications Diameter 18 mm (0.71 in) (typical) Cable Coaxial Passband Typically 0–100 MHz Connector SO-239 (socket) PL-259 (plug) Electrical
UHF_connector
Material with a negative refractive index
between the split rings, a passband occurs within the previously forbidden band of the split ring dispersion curves. That this passband occurs within a previously
Negative-index_metamaterial
Data transmission concept
term was mainly used for transmission over multiple channels. Whereas a passband signal is also modulated so that it occupies higher frequencies (compared
Broadband
Electronic filter that is constructed with waveguide technology
Filters are devices used to allow signals at some frequencies to pass (the passband), while others are rejected (the stopband). Filters are a basic component
Waveguide_filter
Coaxial RF connector
crimped to a 5 mm coaxial cable Type RF coaxial connector Production history Designed 1960s Manufacturer Various Cable Coaxial Passband Typically 0–4 GHz
SMB_connector
Representation of a signal as a rectangular wave with varying duty cycle
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Pulse-width_modulation
FM radio reception phenomenon
stronger of two or more signals received within the bandwidth of the receiver passband will be demodulated. The Capture effect therefore enables frequency reuse
Capture_effect
Logarithmic unit expressing the ratio of physical quantities
of digital video and other multimedia services (> 1 Gb/s bandwidth) in passband above the 155 Mb/s baseband services on a FTTx full service access network"
Decibel
Transponder intended for emergency use at sea
frequency will match that of the interrogating radar and be within the passband of the radar receiver. If the radar-SART is within range, the frequency
Search_and_rescue_transponder
Frequency dependent circuit
of objective criteria such as passband, passband attenuation, stopband, and stopband attenuation, where the passbands are the frequency ranges for which
Audio_filter
allows a transition between a passband and a stopband of a signal processing filter. The transition band is defined by a passband and a stopband cutoff frequency
Transition_band
Wave shaped like the sine function
although a differentiator does not have a cutoff frequency or a flat passband. A nth-order high-pass filter approximately applies the nth time derivative
Sine_wave
Measure of the luminosity of celestial objects
different wavelength ranges corresponding to specified filter bands or passbands; for stars a commonly quoted absolute magnitude is the absolute visual
Absolute_magnitude
Type of electronic circuit or optical filter
{in}}(s)}}={\frac {-sR_{2}C}{1+sR_{1}C}}.} In this case, the filter has a passband gain of −R2/R1 and has a cutoff frequency of f c = 1 2 π τ = 1 2 π R 1
High-pass_filter
Method for converting signals between digital and analog
analog low-pass anti-aliasing filters. High-order filters with a flat passband cost more to make in the analog domain than in the digital domain. Another
Delta-sigma_modulation
a relation between intensity and temperature is well defined over the passband, as in the case of a blackbody, then the NET simply scales with the NEP
Noise-equivalent_temperature
Device for receiving radio transmissions
of frequencies received by the receiver is called its passband (PB), and the width of the passband in kilohertz is called the bandwidth (BW). The bandwidth
Radio_receiver
Eruption of electromagnetic radiation
produce copious amounts of radiation at H-alpha, adding a narrow (≈1 Å) passband filter centered at this wavelength to the optical telescope allows the
Solar_flare
Function specifying the behavior of a component in an electronic or control system
transfer functions are commonly used: Butterworth filter – maximally flat in passband and stopband for the given order Chebyshev filter (Type I) – maximally
Transfer_function
Telecommunications coding technique
only half the baseband bandwidth required by the Manchester code (the passband bandwidth is the same). The pulses in NRZ have more energy than a return-to-zero
Non-return-to-zero
Information rate that can be transmitted over a given bandwidth
(bit/s)/Hz in the baseband transmission case. In the passband transmission case, a signal with passband bandwidth W can be converted to an equivalent baseband
Spectral_efficiency
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Ternary_signal
Template for electronic filter design
simple scale factor. Bandform here is meant to indicate the category of passband that the filter possesses. The usual bandforms are lowpass, highpass, bandpass
Prototype_filter
Electronic filter circuits defined by component connection
is being designed with more than one passband, the m-type topology will result in a filter where each passband has an analogous frequency-domain response
Electronic_filter_topology
Radio-frequency connector for coaxial cable
Manufacturer Various General specifications Diameter Outer, typical: 0.570 in (14.5 mm), male 0.436 in (11.1 mm), female Cable Coaxial Passband Typically 0–4 GHz
BNC_connector
Method of obscuring transmission
"sound like Donald Duck". Despite the term, the technique operates on the passband of the information and so can be applied to any information being transmitted
Voice_inversion
Miniature 50Ω RF connector series
FME Type RF coaxial connector Cable Coaxial Passband Design: 0-200 MHz (Extended past 2GHz by several companies)
FME_connector
Delays experienced through a linear time-invariant system
passband signal by shifting the baseband frequency components to a much higher frequency range. Although the frequencies are different, the passband signal
Group_delay_and_phase_delay
Analog circuit which filters an electronic signal using an amplifier
need to be established include: The range of desired frequencies (the passband) together with the shape of the frequency response. This indicates the
Active_filter
Method of encoding digital data on multiple carrier frequencies
period than the previous carrier. Therefore, with N subcarriers, the total passband bandwidth will be B ≈ N·Δf (Hz). The orthogonality also allows high spectral
Orthogonal frequency-division multiplexing
Orthogonal_frequency-division_multiplexing
Coaxial RF connectors similar to MCX but smaller
Type RF coaxial connector Production history Designed 1990s General specifications Diameter 2.4 millimetres (0.095 in) Cable Coaxial Passband 0-6 GHz
MMCX_connector
Signal-to-noise ratio of a modulated signal
signal. The term is used to distinguish the CNR of the radio frequency passband signal from the SNR of an analog base band message signal after demodulation
Carrier-to-noise_ratio
Electrical connector used for analog audio and video
of America Designed 1930s General specifications Diameter 0.327 in (8.3 mm) 0.126 in (3.2 mm) contact dia. Cable Coaxial Passband Typically 0–100 MHz
RCA_connector
a filter's frequency response comprises regions of frequency called passbands, stopbands, and transition regions. Typically there is one of each, but
Filter_transition_region
Channel between upper and lower cutoff frequencies of a band system
arithmetic definition is used in more general situations, such as in describing passband telecommunication systems, where filters are not necessarily symmetric
Center_frequency
Transmission method of conveying voice, data, image, signal or video
modulation (AM), or no modulation at all. Some textbooks also consider passband data transmission using a digital modulation method such as ASK, PSK and
Analog_transmission
Coaxial RF connectors developed in the 1980s
female) Type RF coaxial connector Production history Designed 1980s General specifications Diameter 3.6 millimetres (0.14 in) Cable Coaxial Passband 0-6 GHz
MCX_connector
Type of signal filter
\alpha } is the cutoff frequency, and K is the gain of the filter in the passband. The cutoff frequency is related to the time constant by: α = 1 τ {\displaystyle
Low-pass_filter
Algorithm on pulse-width modulation
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Space_vector_modulation
Form of error in digital signals; spurious signals near sharp transitions
perspective is that ringing is caused by the sharp cut-off in the rectangular passband in the frequency domain, and thus is reduced by smoother roll-off, as discussed
Ringing_artifacts
and wider passband, the resulting dual low pass filter has a higher regularity, better flatness and narrower passband. Besides, if the passband of the starting
Biorthogonal nearly coiflet basis
Biorthogonal_nearly_coiflet_basis
Ability of a circuit to increase the power or amplitude of a signal
Unless otherwise stated, the term refers to the gain for frequencies in the passband, the intended operating frequency range of the equipment. The term gain
Gain_(electronics)
Type of radio receiver
Nonlinear operation can produce intermodulation products that fall within the passband and interfere with reception of nearby channels. In earlier tuned radio-frequency
Superheterodyne_receiver
Type of data encoding
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Phase-shift_keying
Digital representation of sampled analog signals
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Pulse-code_modulation
American electrical engineer (1887–1970)
falls very rapidly past the cut-off frequency. A fast transition between passband and stopband was one of the primary requirements for cramming as many telephone
Otto_Julius_Zobel
Electronic method of transmitting information with a carrier wave
modulation is line coding, which uses a baseband carrier, rather than a passband wave. The methods of angle modulation can provide better discrimination
Angle_modulation
Type of continuous-phase frequency-shift keying
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Minimum-shift_keying
Measuring device for harmonic noise
measurement of the effectiveness of an electronic filter with extremely narrow passband, such as a notch filter in a parametric equalizer. There are several types
Total harmonic distortion analyzer
Total_harmonic_distortion_analyzer
Topics referred to by the same term
absolute magnitude of a celestial body such as a star at 10 parsecs in the V passband M-V, Japanese space rocket Machine vision MV, Roman numeral for 1005 Market
MV
Any technique to improve resolution of an imaging system beyond conventional limits
resolved. But in fact what is set by diffraction theory is the width of the passband, not a fixed upper limit. No laws of physics are broken when a spatial
Super-resolution_imaging
Signal used to represent data as a sequence of discrete values
allowing baseband transmission; or a digital modulation scheme, allowing passband transmission over long wires or over a limited radio frequency band. Such
Digital_signal
Morse code decoder software
which allows simultaneous decoding of all CW signals in the receiver passband. The call signs are extracted from the decoded messages and displayed next
CW_Skimmer
Astronomical spectral light processor
is a type of optical filter that uses birefringence to produce a narrow passband of transmitted wavelengths. Lyot filters are used in astronomy, particularly
Lyot_filter
Electronic filters designed by the network synthesis method
frequency response of the passband. There is a compromise to be had between the maximum allowed attenuation in the passband and the steepness of the cut-off
Network_synthesis_filters
Software
usage of JT9, JT65 Multi-decoder: finds and decodes all FT8 signals in passband Auto-sequencing after manual start of QSO Compared to the so-called "slow
WSJT_(amateur_radio_software)
Electronic method of transmitting information with a carrier wave
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Amplitude_modulation
American electrical engineer
Zobel working for AT&T in New York. The sharpness of transition from the passband to the stopband, and the depth of rejection in the stopband were determined
George_Ashley_Campbell
Precision coaxial connector
Production history Manufacturer Originally Amphenol, then Hewlett-Packard, then others General specifications Diameter 7 mm (0.28 in) Passband 0–18 GHz
APC-7_connector
Type of electronic filter
in that there is a rapid transition from the cut-off frequency of the passband to a pole of attenuation just inside the stopband. Despite these advantages
M-derived_filter
Electronic method of transmitting information with a carrier wave
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Phase_modulation
Lattice network
characteristic. This delay response is ripple free and is perfectly smooth over the passband, only deviating from the mean value as the band edge is reached. Initially
Lattice_delay_network
Converts an electrical audio signal into a corresponding sound
amplifier, passive crossovers have an inherent attenuation within the passband, typically leading to a reduction in damping factor before the voice coil
Loudspeaker
Modulation allowing for multiple signals on a line
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Polar_modulation
Star in the constellation Cassiopeia
Cassiopeiae) and it may appear marginally brighter or dimmer, depending on which passband is used. However, recent calculations from NASA's WISE telescope confirm
Alpha_Cassiopeiae
First commercially available variant of Ethernet
broadband came to be used more commonly for different concepts, and the terms passband or modulated would be used to describe non-baseband signaling. Duffy, Jim
10BASE5
Brightness of a celestial object observed from the Earth
the ultraviolet, visible, or infrared wavelength bands using standard passband filters belonging to photometric systems such as the UBV system or the
Apparent_magnitude
Electromagnetic wave that is not pulsed
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Continuous_wave
Chebyshev filter, which has a faster roll-off but has ripple in either the passband or the stopband. The filter design is based on Legendre polynomials; this
Optimum_"L"_filter
Data communications modulation protocol
Passband modulation Analog modulation AM SM SSB Angle modulation FM PM QAM Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM TC-PAM
Multiple frequency-shift keying
Multiple_frequency-shift_keying
Feature of filter frequency response
especially in connection with filter circuits in the transition between a passband and a stopband. It is most typically applied to the insertion loss of the
Roll-off
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PASSBAND
PASSBAND
PASSBAND
PASSBAND
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PASSBAND
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PASSBAND
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