Matches 151 - 200 out of 219 < 1 2 3 4 5 >
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4516271 Microwave mixer with recovery of the sum frequency  
The mixer comprises a microelectronic circuit composed of one or a number of active electronic elements having a nonlinear characteristic and carried on a substrate, the elements being supplied by...
4509208 Frequency conversion unit  
A frequency conversion unit comprising a local oscillator, first and second mixers, first and second hybrid circuits. The mixers receive, via the first hybrid circuit, local oscillation outputs...
4509209 Quasi-optical polarization duplexed balanced mixer  
An integrated planar antenna-mixer device for microwave reception utilizes a slot-ring antenna and a diode quad connected thereto. The device comprises a planar metallic sheet backed on one side by...
4492960 Switching mixer  
An RF system is disclosed in which the input mixer of the system is also used as a switch to allow the local oscillator to be used as the transmitter oscillator. The switching mixer may also be...
4491977 Millimeter-wave quasi-optical planar balanced mixer  
A millimeter-wave, planar, balanced mixer having optical means for coupling radio frequency waves to the mixer circuit. The optical coupling means may comprise a dielectric lens and particularly a...
4485488 Microwave subharmonic mixer device  
A wide band microwave subharmonic mixer includes a signal divider, first and second balanced varistor frequency converters, and a signal combining and dividing circuit. A local oscillator signal is...
4461040 Integrated single balanced mixer/oscillator with slot and hybrid coupler  
In an RF receiver, the unsymmetric RF input to a single balanced mixer is provided from the preceding portion of the receiver by means of a hybrid coupler to provide DC decoupling and impedance...
4435848 Stripline microwave balanced mixer circuit  
A stripline tuning fork microwave balanced mixer circuit which includes two diodes (21, 22) and a differential transformer (61) whereby matching is accomplished in the differential transformer (61)...
4420839 Hybrid ring having improved bandwidth characteristic  
A hybrid ring useful in the microwave and millimeter wave regions as a mixer for producing an IF output signal in response to applied LO and RF input signals. The ring is designed to exhibit a...
4412354 Millimeter-wave stripline planar mixer  
A millimeter-wave stripline planar mixer to provide a means for mixing a local oscillator signal with a radio frequency signal to produce an intermediate frequency signal, the mixer utilizing beam...
4412351 Microwave mixing circuit  
A microwave mixing circuit comprises a main transmission line having an input port for receiving an input high frequency and an output port, a band pass filter responsive to a local oscillation...
4411022 Integrated circuit mixer apparatus  
An integrated circuit mixer which is impedance matched to a fundamental waveguide, utilizes a slot coupler and a coplanar transmission line to apply an RF and local oscillator signal to a...
4406020 Millimeter wave printed circuit mixer  
A millimeter wave printed circuit mixer is disclosed which has extended RF nd IF bandwidths. A dual ridge waveguide to slotline transition is utilized to bring the RF signal into the device. The...
4399562 Full balun mixer  
Microwave circuit layout structure is disclosed for a diode mixer frequency converter. Each mixer port is provided by balun circuitry, and the diodes are isolated from, and on the opposite side of...
4392250 Symmetric microwave mixer  
Microwave circuit layout structure is disclosed for a diode mixer bridge. The circuit layout structure is compact and symmetric, and enables short orthogonal equal length leads from a diode ring...
4392251 Symmetric microwave mixer with coplanar diode connection  
Microwave circuit layout structure is disclosed for a diode mixer frequency converter. The circuit layout structure is compact and symmetric, and enables coplanar diode lead connection.
4380830 Microwave up-converter  
An up converter having on the one hand an ultrahigh-frequency ring receiving one of the waves to be mixed and on the other hand a transformer receiving the other wave to be mixed whose frequency is...
4380829 Simplified double balanced frequency converter  
A simplified, compact, flat microwave frequency converter assembly utilizes a flat quad diode bridge, and has two pairs of opposed flat conductors, each with a respective one of the opposed...
4380831 Symmetric microwave mixer with improved isolation  
Microwave circuit layout structure is disclosed for a diode quad mixer frequency converter with separate, isolated sections, each supplied by a respective half of dual balun port structure. The...
4377005 Ultra-high frequency hybrid mixer  
A mixer comprising two microstrip plates, each having an earth plane, a dielectric layer and an etched layer. One of the etched layers carries the mixer ring and input guides. The outer etched...
4375699 Microwave frequency converter with dual balun port  
A microwave frequency converter is provided with a diode mixer bridge having a balanced port connected to a dual balun. The dual balun is provided by two pairs of balanced secondary conductors...
4371982 Microwave frequency converter with economical coupling  
A microwave frequency converter is provided with cost effectively manufacturable microstrip layout circuitry, particularly for directionally coupling the LO signal. A pair of unbalanced microstrip...
4359781 Balun coupled microwave frequency converter with single pair of diodes  
A balun coupled microwave frequency converter is provided by a mixer using a single diode pair with one port balanced and the other port unbalanced. The balanced port is provided by first and...
4359782 Microwave mixer with linking juxtaposed balun port  
Microwave circuit layout and structure is disclosed for a diode bridge mixer. Linking structure provides interconnection from coplanar sections of balanced first and second conductors to...
4355421 Broadband mixer with coplanar balun  
An improved broadband mixer includes a first balun (11) with a first signal port (12), a second balun (14) with a second signal port (15), a third balun (17) with a third signal port (18), and a...
4353132 Double superheterodyne tuner  
A double superheterodyne tuner including a first and a second frequency converter and a bandpass filter, constituted of microstrip lines, wherein the substrate in which the bandpass filter is built...
4352071 Planar QPSK demodulator  
A microwave integrated circuit (MIC) quadrature phase shift keying (QPSK) modulator uses a novel arrangement of couplers to permit the IF ports to be adjacent one another so that, in mixer...
4340975 Microwave mixing circuit and a VHF-UHF tuner having the mixing circuit  
In a double superheterodyne tuner for receiving TV channel signals, a frequency in a range defined between 2520 and 2700 MHz is selected as the first intermediate frequency, while the first...
4320536 Subharmonic pumped mixer circuit  
A subharmonic pumped mixer circuit utilizes quarter wavelength transmission lines at a local oscillator (LO) frequency to provide high radio frequency (RF) to local oscillator (LO) port isolation...
4306311 Double-balanced mixer circuit  
A double-balanced mixer circuit includes a diode ring, wherein each side of the diode ring is provided with a stripline to bypass high frequency signals.
4293956 Double-balanced mixer  
A double-balanced mixer device including a planar substrate selectively plated on both sides to form certain mixer component parts and including a pair of quarter wavelength narrow strips extending...
4287603 Radiated input mixer  
A radiated input mixer for converting a radio frequency (RF) signal into an intermediate frequency (IF) signal with the aid of a local oscillator (LO) signal includes, in combination, an antenna...
4276655 Integrated circuit planar high frequency mixer  
The invention is a cross-bar signal mixer suitable for low-cost high-yield mass production. The mixer configuration consists of a balanced planar taper section supported upon a dielectric substrate...
4270224 Microwave down converter  
The converter consists of a waveguide through which passes at right-angles a dielectric wafer for a microstrip. On each side of the waveguide this strip forms a microstrip line section. In the...
4264881 Microwave device provided with a 1/2 lambda resonator  
A microwave device is disclosed comprising a microstrip line pattern including an open ring forming a 1/2λ resonator having a narrow gap in which the electromagnetic field is closely tied to the...
4249263 Mixer circuit  
A mixer circuit formed of a micro strip line for converting an input signal in SHF band into an intermediate frequency signal in UHF band is disclosed which includes an arch-shaped half-wavelength...
4245356 Frequency translator  
A planar balun coupled frequency translator (upconverter or downconverter, is illustrated in various configurations for providing both full-wave and half-wave signal frequency conversion. As...
4211977 Mixer circuit arrangement  
A mixer circuit employing a distributed constant circuit using a strip line includes a strip line for applying a high frequency signal and a local oscillation signal to a diode. The strip line is...
4193036 Balanced active mixer circuit  
A singly-balanced active mixer circuit is disclosed for developing an IF signal by combining an RF signal and a local oscillator (LO) signal. The RF and LO signals are applied to a strip...
4186352 Signal converter apparatus  
Microstrip technology is utilized in illustrating new and improved versions of baluns, hybrid junctions and half-wave balanced mixers and full-wave double balanced mixers.
4125810 Broadband high frequency baluns and mixer  
A double slot balun has two pairs of coplanar, electric conductive sheets in a superposed, spaced, electrically insulated relation on opposite planar surfaces of a dielectric substrate forming two...
4118670 Image phased and idler frequency controlled mixer formed on an integrated circuit dielectric substrate  
The tuned elements of a mixer organization are fabricated as slot-type microwave integrated circuit (MIC) elements formed by selected masking or etching of a continuous ground plane layer of...
4074214 Microwave filter  
A precisely controlled bandpass/bandstop filter is fabricated by coupling open circuit stubs to a transmission line. The first and second stubs are designed to resonate with the third stub at the...
4032849 Planar balanced mixer/converter for broadband applications  
A broadband millimeter wave (26.5-40 GHz) mixer/converter utilizing slotl and coplanar strip-line for the construction of the hybrid junction. The RF and local oscillator signals are applied 180°...
4027254 Directional coupler having interdigital comb electrodes  
A directional coupler comprising a dielectric substrate having two opposing faces carrying a sheet electrode on one face and two comb like electrode structures on the other face. Each comb...
4008438 Rat-race mixer circuit  
A mixer circuit using a rat-race constituted by disposing microstrip lines on one surface of a substrate to provide a loop-shaped transmission line and four transmission lines connected to the...
4000469 Combination waveguide and stripline downconverter  
A frequency mixer-downconverter which can be tuned as either a single sideband mixer or a double sideband mixer and which has a wide tunable RF bandwidth and low conversion loss is disclosed. A...
3950703 Microcircuit reverse-phased hybrid ring mixer  
A balanced microcircuit mixer for down converting microwave and millimeter ave frequencies. A pair of beam lead diodes and an IF filter are mounted on a reverse-phased hybrid ring coupler providing...
3943450 Frequency converting device for RF signals  
A frequency converting or mixing device for a receiver, particularly employing hollow conductor or micro strip techniques, including signal and oscillator input means, a diode as a non-linear...
3939430 Integrated circuit, image and sum enhanced balanced mixer  
A balanced microwave diode mixing circuit utilizes the junction of a slot transmission line and a coplanar strip transmission line as the point of diode modulation to provide heterodyne mixing. By...
Matches 151 - 200 out of 219 < 1 2 3 4 5 >