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JP4074839B2 |
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JP4072601B2 |
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JP4074231B2 |
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JP2008079085A |
To solve a problem that not only electric wave of an unnecessary bandwidth is suppressed by a filter but also a passing loss of electric wave of a used frequency is increased due to an increase of a line length by the filter, since a con...
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JP2008078797A |
To provide a magnetostatic wave oscillator capable of being miniaturized in size even if a magnetostatic wave element outputs an oscillation signal having a higher oscillated frequency.One or more electromagnetic coils arranged applied o...
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JP4071162B2 |
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JP4070428B2 |
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JP2008072740A |
To provide an appropriate tunable multiplexer.The present invention provides a tunable ferro-electric multiplexer for use in CDMA communication devices. Tunable ferro-electric capacitors are used to tune the resonant frequencies of sever...
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JP4068521B2 |
To provide a superconducting duplexer capable of obtaining extremely low loss and high performance by integrating a transmission filter and a reception filter by a superconductor. The superconducting dulexer is connected to an antenna 10...
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JP4067107B2 |
A high-frequency filter arrangement comprising at least one filter consisting of a plurality of high-frequency inter-coupled cavities in which a locally fixed respective dielectric resonator element is disposed and in which a respective ...
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JP4066312B2 |
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JP4066931B2 |
Disclosed is a method of manufacturing a BPF (bandpass filter) for GHz bands of the structure that an input signal line (2) and an output signal line (3) run with a small gap on one surface of a sheet (1) made by dispersing soft magnetic...
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JP2008060972A |
To provide a converter with a local frequency adjustment function by which shake of a screw for local adjustment is prevented and torque generated when a frequency is adjusted using the screw for local adjustment is controlled.A plate sp...
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JP4059141B2 |
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JP4059126B2 |
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JP2008045949A |
To provide an electromagnetic characteristics measurement tool and its measuring method, capable of measuring the electromagnetic characteristics of a measuring specimen to be used for a stripline or a microstrip line, and of measuring e...
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JP4051819B2 |
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JP2008042608A |
To provide a band pass filter in which a radiation loss of a resonator is small and interlaced coupling that is not intended in design, between resonators is reduced.Two lines 101 and 102 each of which both ends are open, of the equal le...
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JP2008035569A |
To provide an enhanced tunable f-e filter capable of providing a tunable range higher than a desired frequency domain through low I. L. and out-of-high-band rejection, and a method of designing the filter.The present invention quantifies...
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JP4047746B2 |
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JP2008028836A |
To provide a superconducting filter device that prevents current density from concentrating, and has improved electric power resistance.The superconducting filter device 10 has a first dielectric substrate 11, and a superconducting bulk ...
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JP2008029025A |
To provide a method and a device for optimizing a dielectric circuit board material for improving performance in a resonance line.The resonance circuit for processing a radio frequency signal includes a substrate. The substrate is a meta...
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JP2008028835A |
To provide a superconducting tunable filter controlling a center frequency and bandwidth independently.The superconducting tunable filter comprises: a resonator pattern 12 formed by a superconducting material on a dielectric substrate 11...
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JP2008029024A |
To provide a method and a device for optimizing a dielectric circuit board material for increasing the degree of freedom in the design of an RF circuit and improving performance in a single-port resonance line.A printed circuit for proce...
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JP4044865B2 |
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JP2008022585A |
To provide an appropriate tunable multiplexer.A tunable ferro-electric multiplexer for use in CDMA communication device is provided. Tunable ferro-electric capacitors are used to tune the resonant frequencies of several resonators used i...
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JP4039051B2 |
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JP4038109B2 |
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JP4038169B2 |
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JP2008011101A |
To facilitate adjustment of a coupling degree while allowing a resonance frequency in a TM dual-mode to be independently adjustable.A dielectric resonator 1 having an octagonal thick-plate shape body is installed in a cavity 2 having a r...
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JP4035024B2 |
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JP2008005534A |
To provide a suitable integrated inverted-F ferroelectric antenna.The integrated inverted-F ferroelectric antenna comprises a counterpoise 102, a ceramic block 110, an inverted-F structure radiator 104, a bias voltage feed metal inlaid, ...
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JP4029172B2 |
Electrodes ( 2 ) and ( 3 ) are formed on the front face ( 1 A) and the rear face ( 1 B) of a dielectric substrate ( 1 ). Fan-shaped apertures ( 4 A) and ( 4 B) forming a resonator ( 4 ) are formed in the electrodes ( 2 ) and ( 3 ) such t...
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JP4029173B2 |
A slot line 1 is configured with a slot 4 formed on a front surface electrode 3 on a dielectric substrate 2, and two slot lines 1 are positioned with the front surface electrodes 3 separated from one another with a gap 5 therebetween. Al...
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JP4031367B2 |
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the geometric losses resulting from a particular top...
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JP2007336412A |
To provide a resonator which conducts adjustment operations of a resonance frequency efficiently. As an adjustment bolt 15 to adjust the resonance frequency is constituted of an adjustment bolt main body 16 and a fine adjustment bolt 17 ...
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JP4023166B2 |
A high-frequency module having a communication function is provided which uses a circuit board including an organic substrate (5) formed from a woven glass fabric (21) formed by weaving glass fibers (22) into a mesh pattern and also an o...
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JP2007325321A |
To provide an improved apparatus for reducing the leakage effect of a local oscillator in a direct down-conversion receiver. The present invention provides a phase shift filter and a direct down-conversion receiver which compensates a ph...
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JP4021844B2 |
The present invention relates to a tunable resonating arrangement comprising a resonator apparatus ( 10 ), input/output coupling ( 4 ) means for coupling electromagnetic energy into/out of the resonator apparatus, and a tuning device ( 3...
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JP4015938B2 |
The present invention is directed to optimize arrangement of through holes and enable electromagnetic waves to be efficiently propagated. A cylindrical waveguide has a dielectric substrate, ground electrodes which face each other, and a ...
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JP4011553B2 |
A second-harmonic oscillator based on push-push oscillation has a pair of amplifiers for oscillation, a high frequency transmission line for connecting inputs of the pair of amplifiers to each other and connecting outputs of the pair of ...
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JP4005990B2 |
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JP4008142B2 |
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JP4007215B2 |
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JP4006655B2 |
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JP4006755B2 |
An object of the present invention is to provide a dielectric ceramic composition for microwave use having a relative permittivity epsir of 35 to 45, Qf0 value of more than 50,000 GHz (at 7 GHz), and dielectric characteristic of tauf=0±...
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JP2007295350A |
To obtain a submillimeter wave oscillator which can be easily and inexpensively manufactured and is compact in size and high in output. The submillimeter wave oscillator includes: a substrate 2 having a plurality of through holes 1 forme...
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JP2007295635A |
To provide an FE (ferroelectric) dielectric-tuned antenna and a method for frequency tuning a wireless communications antenna. The method comprises steps of forming a radiator (106), forming a dielectric with ferroelectric material proxi...
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JP4005620B2 |
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JP4004046B2 |
A dielectric porcelain composition includes MgTiO3 and Mg2SiO4 and satisfies a + b = 1 and 0 < b < 1, wherein a denotes a molar ratio of MgTiO3 and b denotes a molar ratio of Mg2SiO4. It can include MgTiO3 and CaTiO3 and satisfy a + c = ...
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