frequency band造句
marine frequency band
fundamental frequency band
very low frequency band radiated field system
Communication of the second frames USES a second frequency band that at least partially overlaps the first frequency band.
Each channel maintains the allocated frequency in a single frequency band.
FIG. 2 illustrates the multi-band antenna system 100 showing the conductors elements 102, 104 in the multi-band antenna system 100 operating in a low frequency band.
A specified frequency band for the transmission and reception of electromagnetic signals, as for television signals.
The design is very suitable for wireless communication systems which work in ISM frequency band.
An operator can now limit transmitting outside the programmed frequency band.
The European HiperLAN standard operates in same frequency band as the U-NII.
Each antenna element either resonates independently, or increases the total bandwidth of operation of the multi-band antenna system 100, in the low frequency band.
They rearranged your DNA in order to have you broadcast within a certain limited frequency band whose frequency could feed them and keep them in power.
It receives Ku frequency band signals from 10.7 through 12.75 GHz with improved frequency stability by using an external 10 MHz reference.
Wide frequency band, high power, low losses and wide temperature coefficient are the developing trends of microwave ferrite materiel.
A relatively restricted frequency band, normally used for a single purpose, or made available to a single user.
"on the other hand, it is imperative to develop high frequency band relay communication system in those poor raining regions."
Another attribute is the flux or radiant power that can be delivered in that narrow frequency band.
Methods of measurements of audio-frequency band and simulated systems for selective calling equipment used in the mobile services
Under normal circumstances, in order to filter at any frequency band have good frequency resolution, can be used with a broadband constant-pass filter, such as radio frequency-selective.
Bluetooth is a universal radio interface in the 2.45GHz frequency band that enables portable electronic devices to connect and communicate wirelessly via short-range, ad hoc networks.
The serial product features include wide frequency band, low VSWR, high attenuation accuracy, small dimensions, high power, excellent capacity in anti-burnout etc.
The studies have found that the radiation pulse will be broadened after passing through the UWB antenna, and the spectrum will shift entirely to the lower frequency band.
The RF-7800V provides continuous coverage in the 30 to 108 MHZ frequency band at up to 50 watts of power.
The thermal noise of resistance could be overcome by reducing the physical temperature, choosing appropriate working frequency band low noise elements, etc.
The formulas for the transformation of sound levels between linear spectrum and multiplex frequency band, or among various multiplex frequency bands, are derived and the corrected value is calculated.
Diode switches or voltage controlled varactors implement dual-band resonators such that they can offer low impedance at the second harmonic of each frequency band, while, in some cases, presenting high impedance at the fundamental frequency as an RF choke circuit.
The MIMO systems use multiple antennas at both the transmitter and receiver to transmit signal in the same frequency band at the same time can significantly increase the channel capacity.
The basic idea using array sweeping to suppress harmonic interference is to reasonably design each sub-sweeping frequency band that can reach the goal of elimination of harmonic interference.
Microwave technology has exited for over half of the century. It transmits the information by ground visual distance in microwave frequency band. It is a kind of wireless transmission technology.
Signal sample is analyzed through wavelet packet theory, best base is chose, and the average energy of every sub frequency band is calculated, at last 14 links of characteristic vectors are get.
occupied frequency bandwidth
Exploit differences in technologies and frequency bands.
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