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7554420 |
High-frequency element
An element includes a member to be soldered, a first member having a firs path for receiving the member, and a second member having a second path for receiving the member. The second member is made...
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7532086 |
Digital attenuation apparatus having ultra broadband and excellent attenuation characteristics
Provided is a digital attenuation apparatus having ultra broadband and excellent attenuation characteristics. The digital attenuation apparatus includes an input port, an output port, a first...
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7528677 |
Temperature compensation attenuator
A temperature compensation attenuator comprises a base, a serial film thermistor and a parallel film resistor on the base, an input terminal and an output terminal which are connected to the serial...
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7492235 |
Transmission line transistor attenuator
An attenuator has an input adapted to receive a signal to be attenuated, and an output adapted to output an attenuated signal, and a shunt transmission line transistor having a gate transmission...
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7453329 |
Variable attenuator and integrated circuit
In a variable attenuator attenuating a signal inputted to an input terminal from a plurality of transmission lines connected in series between the input terminal and an output terminal and...
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7408424 |
Compact RF circuit with high common mode attenuation
A compact RF differential circuit has a first differential I/O port comprising a first pair of signal carrying terminals which is connected to a source termination and a second differential I/O...
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7385456 |
Power absorber system and method
According to one embodiment of the invention, a power absorber for receiving a signal having a fundamental frequency includes an input node for receiving the signal and a first PIN diode circuit...
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7283020 |
Signal extracting arrangement
A base station in a mobile communication network, includes at least one transmission line for transmitting a radio frequency signal. Each transmission line includes a coupling hole. A two-port...
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7276989 |
Attenuator circuit comprising a plurality of quarter wave transformers and lump element resistors
A microwave attenuator circuit is disclosed, including a combination of a plurality of quarter wave transformers and a plurality of resistive elements.
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7274272 |
Microwave variable attenuator
The present invention relates to a microwave variable attenuator variably attenuating while maintaining a matching state. The microwave variable attenuator includes: an input terminal for inputting...
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7215219 |
Temperature and frequency variable gain attenuator
A temperature and frequency variable gain attenuator comprises a temperature variable attenuator and a temperature variable filter network whose resistances changed to c generate different...
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7212079 |
Attenuation or termination element having a coaxial structure for radio frequency electromagnetic waves
The invention relates to an attenuation or termination element comprising at least one resistance part which is mounted in an outer conductor and has at least one connection to an inner conductor...
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7205863 |
Temperature and frequency equalizer
The present invention is an absorptive-type cable temperature and frequency equalizer that offsets changes in the gain of the other circuit components cables with increases in temperature and/or...
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7202759 |
Wideband temperature-variable attenuator
An absorptive temperature-variable microwave attenuator is produced using a first plurality of shunt resistors separated by quarter-wave transmission lines connected by a series resistor with a...
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7119632 |
High-frequency temperature-variable attenuator
An absorptive temperature-variable microwave attenuator is produced using at least two temperature-variable (or fixed) resistors in series with a transmission line. The temperature coefficients of...
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7039942 |
Pad adjustable equalizer for two way cable transmission
A forward signal equalizer for a forward amplifier for two-way coaxial cable systems, of the type having a distribution center distributing forward signals, and having reception facilities for...
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7012478 |
Method and device to control the power of millimeter waves for a V-band TR module
The invention relates to a method to control the power of millimeter waves for a V-band TR module. According to said method, the output power is detected and controlled at a constant level with an...
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6968244 |
Apparatus and method for sharing an audio processing device between at least two optical information reproducing devices
The invention provides an apparatus and a method allowing N optical information reproducing devices to share an audio processing device. The apparatus includes a first connecting apparatus and...
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6922115 |
Attenuator with switchable transistors for controlling attenuation
An attenuator with a simple circuit configuration is and accurate attenuation includes four transistors connected in parallel between a connecting point on a main line and a ground. Since the...
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6903621 |
In-line attenuator
An attenuator includes a substrate having first and second surfaces and a plurality of discrete circuit elements. The first surface includes a first electrically conductive pattern providing...
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6888419 |
Variable attenuator device having substantially constant impedance
An attenuator of the current invention allows the adjustment in attenuation at a constant impedance level. The attenuator includes at least three variable resistors. Two of the three variable...
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6876271 |
Microwave switching with illuminated field effect transistors
An electronic microwave circuit ( 1 ) with field effect transistors which are integrated on at least one semiconductor chip ( 2 ), has a light source ( 3 ), which radiates the field effect...
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6822530 |
Rotary attenuator and method of making it
An attenuator includes a housing defining an interior, a front, a rear, and a rotor mounted between front and rear for rotation within housing about an axis of the rotor. First electrical contacts...
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6741141 |
Ultra wideband frequency dependent attenuator with constant group delay
An ultra wideband, frequency dependent attenuator apparatus for providing a loss which can be matched with a physically longer, given delay line, but yet which provides a much shorter time delay...
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6621373 |
Apparatus and method for utilizing a lossy dielectric substrate in a high speed digital system
An electronic device includes a standard dielectric material and a lossy material integrated with the standard dielectric material to selectively control the distributed resistance of the standard...
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6559733 |
Reducing effects of electrical impedance
The present invention, in various embodiments, provides techniques for reducing effects of electrical impedance. In one embodiment, the impedance is in the form of inductance and arises from vias...
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6529091 |
Absorptive circuit element, absorptive low-pass filter and manufacturing method of the filter
An absorptive circuit element includes a core body made of non-conductive material, an inner conductor formed by winding a conductive wire around the core body with a gap provided between adjacent...
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6472948 |
High-power precision 1 dB step attenuator
A step attenuator for use in attenuating an electromagnetic signal. The step attenuator includes a first path having a plurality of attenuator structures provided therein, each attenuator structure...
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6448867 |
High frequency voltage variable attenuator
The attenuator has a microstrip network connected between an input and an output of the attenuator, and the microstrip network has a different impedance than a remainder of the attenuator.
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6414565 |
Variable attenuator and mobile communication apparatus
A variable attenuator is provided with a comb line formed of first and second lines electromagnetically coupled at a coupling degree of M, and diodes connected to the first and second lines...
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6400236 |
Method and apparatus for a radio frequency power divider having un-terminated outputs
A circuit for an output divider has an input port, an output port coupled to the input port at a first node, and a voltage controlled element, such as a varactor, having a first end coupled at the...
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6373348 |
High speed differential attenuator using a low temperature co-fired ceramic substrate
A high speed differential attenuator is formed on low temperature co-fired ceramic substrate structure having first and second parallel resistor-capacitor divider networks with each divider network...
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6271727 |
High isolation RF power amplifier with self-bias attenuator
A PIN diode attenuator and associated control circuits prevents self-biasing of bipolar device RF power amplifiers under large signal drive conditions. A power amplifier control signal controls the...
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6255920 |
Low-pass filter
A low-pass filter includes metal stub conductors mounted on a signal conductor at midpoints of adjacent high impedance sections of the signal conductor. The metal stub conductors prevent the...
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6181922 |
Attenuator unit, step attenuator, and electronic apparatus
An attenuator unit for attenuating a signal, the unit includes a π-type attenuator having a first resistor and second and third resistors which are arranged on both sides of the first resistor, a...
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6144265 |
Calibrated high power radio frequency step attenuator
A high power radio frequency(RF) precision step attenuator includes a trim attenuator, a multi-step attenuator and a calibration/control circuit. The control circuit includes a memory for storing...
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6104258 |
System and method for edge termination of parallel conductive planes in an electrical interconnecting apparatus
A system and method are presented for stabilizing the electrical impedance of an electrical interconnecting apparatus including a pair of parallel planar conductors separated by a dielectric layer....
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6104240 |
Microwave circuit and method of manufacturing microwave circuit
A microwave circuit having a coupler with two microstrip conductors on a front surface of a substrate, parallel to each other, and electromagnetically coupled to each other with a coupling...
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6087906 |
Absorbent amplitude filter
An absorbent amplitude filter for HF signals employs a reflective filter and an absorption circuit comprising a load resistor. The absorption circuit inventively comprises another λ/4 line...
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6054907 |
Coupled gate switch for high impedance load and split power control circuit
A split power control circuit includes a solid state switch and a circuit or circuit element, such as a relatively large resistance or reactance connected between an RF signal line and ground. In...
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6046652 |
Loading element for EMI prevention within an enclosure
A process and implementing construction includes an electrically independent EMI loading device comprised of an inner foam core surrounded by an electrically conductive envelope. The device is...
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6034575 |
Variable attenuator
A variable attenuator includes a resistance region, a signal line to which the resistance region is connected, a very high frequency signal being propagated through the signal line, and a voltage...
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6023608 |
Integrated filter construction
A harmonic filter is added to a radio frequency filter comprising at least one transmission line resonator (R1; R2; R3) to filter harmonic multiples of the filter's operating frequency. Coupling to...
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6011513 |
Beamforming circuitry
Digital control of analogue beamformers utilising PIN diodes in a shunt circuit bi-phase attenuator arrangement is difficult because of the diodes extremely non-linear control response. There is...
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5999064 |
Heated temperature variable attenuator
A temperature compensating voltage variable attenuator includes at least two temperature variable resistors. The temperature variable resistors have different temperature coefficients of...
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5986516 |
Chip attenuator having a capacitor therein
An attenuator includes a flat, substantially rectangular substrate of an insulating material having a surface. A plurality of termination areas of a conductive material are on the substrate surface...
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5929719 |
Shielded cable with in-line attenuator
An attenuated cable is formed with an in-line attenuator conducted between two cable lengths wherein the cable lengths are rigidly joined together by a rigid hollow housing which encloses the...
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5917385 |
Attenuator control circuit having a plurality of branches
A split power control circuit includes a solid state switch and a circuit or circuit element, such as a relatively large resistance or reactance connected between an RF signal line and ground. In...
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5892412 |
Method of and an apparatus for tunable passive-gain equalization
A passive positive-gain equalizer comprises a ferrite (100, 300) electromagnetically coupled to a single conductor (111, 311) of a digital signal defined in the frequency domain by a plurality of...
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5878334 |
High temperature superconducting low power receiver protector/clutter automatic gain control for radar receiver
The present invention provides for a low power receiver protector and stepped attenuator for conditioning a received input signal within a microwave receiver front end. The low power receiver...
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