Modulation and Demodulation
... required bandwidth to include the sideband frequencies. If the tuned amplifier has insufficient bandwidth, the upper sideband frequencies may not be reproduced by the radio receiver. Example 16.4. A 2500 kHz carrier is modulated by audio signal with frequency span of 50 − 15000 Hz. What are the freq ...
... required bandwidth to include the sideband frequencies. If the tuned amplifier has insufficient bandwidth, the upper sideband frequencies may not be reproduced by the radio receiver. Example 16.4. A 2500 kHz carrier is modulated by audio signal with frequency span of 50 − 15000 Hz. What are the freq ...
ADA4860-1
... rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ...
... rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ...
beat-frequency audio genera tor
... e. Varythefrequencywiththe ZERO ADJUST control until thebeat between the oscillator and power-line frequencies, as indicated by the fluctuation of the meter pointer, is as slow as possible. When the oscillator frequency is near the line frequency there is a large-amplitude fluctuation. At multiples ...
... e. Varythefrequencywiththe ZERO ADJUST control until thebeat between the oscillator and power-line frequencies, as indicated by the fluctuation of the meter pointer, is as slow as possible. When the oscillator frequency is near the line frequency there is a large-amplitude fluctuation. At multiples ...
Datasheet - Peregrine Semiconductor
... through a 50Ω transmission line via the top SMA connector, J2. RF1 and RF2 ports are connected through 50Ω transmission lines via SMA connectors J1 and J3, respectively. A 50Ω through transmission line is available via SMA connectors J4 and J5, which can be used to calculate the loss of the PCB. J6 ...
... through a 50Ω transmission line via the top SMA connector, J2. RF1 and RF2 ports are connected through 50Ω transmission lines via SMA connectors J1 and J3, respectively. A 50Ω through transmission line is available via SMA connectors J4 and J5, which can be used to calculate the loss of the PCB. J6 ...
Wires - Massachusetts Institute of Technology
... Rw is lumped resistance of wire Cw is lumped capacitance (put half at each end) ...
... Rw is lumped resistance of wire Cw is lumped capacitance (put half at each end) ...
Basic Question Bank With Answers and Explanations
... 1. must be identified with your call sign 2. are permitted 3. are prohibited - penalties could be assessed to the control operator 4. are permitted for short tests only Out of band transmissions contravene the regulations of the Amateur service. B-001-3-2 (4) If an amateur pretends there is an emerg ...
... 1. must be identified with your call sign 2. are permitted 3. are prohibited - penalties could be assessed to the control operator 4. are permitted for short tests only Out of band transmissions contravene the regulations of the Amateur service. B-001-3-2 (4) If an amateur pretends there is an emerg ...
Variable Frequency Drive / Inverter
... Reset the fault when protective function is active Frequency detection, Overload alarm, Stalling, Overvoltage, Undervoltage, Drive overheating, Run, Stop, Constant speed, Speed searching, Fault output ( Relay and Open collector output ) Choose one from output frequency, current, voltage and DC volta ...
... Reset the fault when protective function is active Frequency detection, Overload alarm, Stalling, Overvoltage, Undervoltage, Drive overheating, Run, Stop, Constant speed, Speed searching, Fault output ( Relay and Open collector output ) Choose one from output frequency, current, voltage and DC volta ...
PCA9517 1. General description Level translating I
... The size of these pull-up resistors depends on the system, but each side of the repeater must have a pull-up resistor. This part designed to work with Standard mode and Fast mode I2C-bus devices in addition to SMBus devices. Standard mode I2C-bus devices only specify 3 mA output drive; this limits t ...
... The size of these pull-up resistors depends on the system, but each side of the repeater must have a pull-up resistor. This part designed to work with Standard mode and Fast mode I2C-bus devices in addition to SMBus devices. Standard mode I2C-bus devices only specify 3 mA output drive; this limits t ...
ADL5354 数据手册DataSheet 下载
... passive mixer arrangement provides good LO-to-RF leakage, typically better than −37 dBm, and excellent intermodulation performance. The balanced mixer core also provides extremely high input linearity, allowing the device to be used in demanding cellular applications where in-band blocking signals m ...
... passive mixer arrangement provides good LO-to-RF leakage, typically better than −37 dBm, and excellent intermodulation performance. The balanced mixer core also provides extremely high input linearity, allowing the device to be used in demanding cellular applications where in-band blocking signals m ...
AD8345 数据手册DataSheet 下载
... produce QPSK and various QAM formats for 900 MHz communication systems as well as digital TV and CATV systems. ...
... produce QPSK and various QAM formats for 900 MHz communication systems as well as digital TV and CATV systems. ...
ADL5801 数据手册DataSheet 下载
... an RF power detector that can be used to optimize the mixer dynamic range. The RF and LO are differential, providing maximum usable bandwidth at the input and output ports. The LO also operates with a 50 Ω input impedance and can, optionally, be operated differentially or single ended. The input, ou ...
... an RF power detector that can be used to optimize the mixer dynamic range. The RF and LO are differential, providing maximum usable bandwidth at the input and output ports. The LO also operates with a 50 Ω input impedance and can, optionally, be operated differentially or single ended. The input, ou ...
AD8345 140 MHz to 1000 MHz Quadrature Modulator Data Sheet
... I Channel Baseband Differential Input Pins. These high impedance inputs should be dc-biased to approximately 0.7 V. Nominal characterized ac swing is 0.6 V p-p on each pin (0.4 V to 1 V). This gives a differential drive of 1.2 V p-p. Inputs are not self-biasing, so external biasing circuitry must be ...
... I Channel Baseband Differential Input Pins. These high impedance inputs should be dc-biased to approximately 0.7 V. Nominal characterized ac swing is 0.6 V p-p on each pin (0.4 V to 1 V). This gives a differential drive of 1.2 V p-p. Inputs are not self-biasing, so external biasing circuitry must be ...
AD9851 数据手册DataSheet 下载
... 8-Bit Data Input. The data port for loading the 32-bit frequency and 8-bit phase/control words. D7 = MSB; D0 = LSB. D7, Pin 25, also serves as the input pin for 40-bit serial data word. 6 REFCLK Multiplier Ground Connection. 6 REFCLK Multiplier Positive Supply Voltage Pin. Word Load Clock. Rising ...
... 8-Bit Data Input. The data port for loading the 32-bit frequency and 8-bit phase/control words. D7 = MSB; D0 = LSB. D7, Pin 25, also serves as the input pin for 40-bit serial data word. 6 REFCLK Multiplier Ground Connection. 6 REFCLK Multiplier Positive Supply Voltage Pin. Word Load Clock. Rising ...
CMOS 180 MHz DDS/DAC Synthesizer AD9851
... 8-Bit Data Input. The data port for loading the 32-bit frequency and 8-bit phase/control words. D7 = MSB; D0 = LSB. D7, Pin 25, also serves as the input pin for 40-bit serial data word. 6 REFCLK Multiplier Ground Connection. 6 REFCLK Multiplier Positive Supply Voltage Pin. Word Load Clock. Rising ...
... 8-Bit Data Input. The data port for loading the 32-bit frequency and 8-bit phase/control words. D7 = MSB; D0 = LSB. D7, Pin 25, also serves as the input pin for 40-bit serial data word. 6 REFCLK Multiplier Ground Connection. 6 REFCLK Multiplier Positive Supply Voltage Pin. Word Load Clock. Rising ...
FEATURES FUNCTIONAL BLOCK DIAGRAM
... The ADL5353 uses a highly linear, doubly balanced passive mixer core along with integrated RF and local oscillator (LO) balancing circuitry to allow for single-ended operation. The ADL5353 incorporates an RF balun to provide optimal performance over a 2200 MHz to 2700 MHz input frequency range using ...
... The ADL5353 uses a highly linear, doubly balanced passive mixer core along with integrated RF and local oscillator (LO) balancing circuitry to allow for single-ended operation. The ADL5353 incorporates an RF balun to provide optimal performance over a 2200 MHz to 2700 MHz input frequency range using ...
Base station (BS) and repeater electromagnetic
... TSG approval. Should the TSG modify the contents of this TS, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version 3.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 Indic ...
... TSG approval. Should the TSG modify the contents of this TS, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version 3.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 Indic ...
GEOPHONE SPURIOUS FREQUENCY
... as the lowest of these resonance modes. The spring is designed to have high stiffness in the direction perpendicular to its working axis, hence the high frequency nature of the spurious resonance. The coil motion in this plane is virtually undamped by the coil form. The eddy current damping is small ...
... as the lowest of these resonance modes. The spring is designed to have high stiffness in the direction perpendicular to its working axis, hence the high frequency nature of the spurious resonance. The coil motion in this plane is virtually undamped by the coil form. The eddy current damping is small ...
Lecture material
... The primary disadvantage is their bandwidth is inconsistent and varies with center frequency when tuned over a wide range of input frequencies. This is caused by a phenomenon called the skin effect. At radio frequencies, current flow is limited to the outermost area of a conductor; thus, the higher ...
... The primary disadvantage is their bandwidth is inconsistent and varies with center frequency when tuned over a wide range of input frequencies. This is caused by a phenomenon called the skin effect. At radio frequencies, current flow is limited to the outermost area of a conductor; thus, the higher ...
AD8045
... The maximum safe power dissipation for the AD8045 is limited by the associated rise in junction temperature (TJ) on the die. At approximately 150°C, which is the glass transition temperature, the properties of the plastic change. Even temporarily exceeding this temperature limit may change the stres ...
... The maximum safe power dissipation for the AD8045 is limited by the associated rise in junction temperature (TJ) on the die. At approximately 150°C, which is the glass transition temperature, the properties of the plastic change. Even temporarily exceeding this temperature limit may change the stres ...
ADF4106
... Input to the RF Prescaler. This small signal input is ac coupled to the external VCO. Analog Power Supply. This may range from 2.7 V to 3.3 V. Decoupling capacitors to the analog ground plane should be placed as close as possible to this pin. AVDD must be the same value as DVDD. Reference Input. Thi ...
... Input to the RF Prescaler. This small signal input is ac coupled to the external VCO. Analog Power Supply. This may range from 2.7 V to 3.3 V. Decoupling capacitors to the analog ground plane should be placed as close as possible to this pin. AVDD must be the same value as DVDD. Reference Input. Thi ...
ADF4360-7 - Analog Devices
... VCO Output. The output level is programmable from −5 dBm to −14 dBm. See the Output Matching section for a description of the various output stages. VCO Complementary Output. The output level is programmable from −5 dBm to −14 dBm. See the Output Matching section for a description of the various out ...
... VCO Output. The output level is programmable from −5 dBm to −14 dBm. See the Output Matching section for a description of the various output stages. VCO Complementary Output. The output level is programmable from −5 dBm to −14 dBm. See the Output Matching section for a description of the various out ...
17.6 high-frequency limitations of common- emitter
... Discussion: The dominant pole is located at a frequency f P1 = 1.56 MHz, whereas f P2 and f Z are estimated to be at frequencies above f T (500 MHz). Thus, the upper-cutoff frequency f H for this amplifier is determined solely by f P1 : f H ∼ = 1.56 MHz. Note that this value of f H is less than 1 pe ...
... Discussion: The dominant pole is located at a frequency f P1 = 1.56 MHz, whereas f P2 and f Z are estimated to be at frequencies above f T (500 MHz). Thus, the upper-cutoff frequency f H for this amplifier is determined solely by f P1 : f H ∼ = 1.56 MHz. Note that this value of f H is less than 1 pe ...
Chapter # 6 Frequency Analysis 1. Introduction The transfer function
... Thus, the amplitude plot consists of two straight asymptotic lines: one with zero slope for ω < ωn and the other one with slope −40 dB/decade for ω > ωn, with ωn as the corner frequency. Figure 8 shows the approximate and actual amplitude plots. Note that the actual plot depends on the damping ratio ...
... Thus, the amplitude plot consists of two straight asymptotic lines: one with zero slope for ω < ωn and the other one with slope −40 dB/decade for ω > ωn, with ωn as the corner frequency. Figure 8 shows the approximate and actual amplitude plots. Note that the actual plot depends on the damping ratio ...
Integrated Synthesizer and VCO ADF4360-7
... VCO Output. The output level is programmable from −5 dBm to −14 dBm. See the Output Matching section for a description of the various output stages. VCO Complementary Output. The output level is programmable from −5 dBm to −14 dBm. See the Output Matching section for a description of the various out ...
... VCO Output. The output level is programmable from −5 dBm to −14 dBm. See the Output Matching section for a description of the various output stages. VCO Complementary Output. The output level is programmable from −5 dBm to −14 dBm. See the Output Matching section for a description of the various out ...
Amateur radio repeater
An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation. Many repeaters are located on hilltops or on tall buildings as the higher location increases their coverage area, sometimes referred to as the radio horizon, or ""footprint."" Amateur radio repeaters are similar in concept to those used by public safety entities (police, fire department, etc.), businesses, government, military, and more. Amateur radio repeaters may even use commercially packaged repeater systems that have been adjusted to operate within amateur radio frequency bands, but more often amateur repeaters are assembled from receivers, transmitters, controllers, power supplies, antennas, and other components, from various sources.