Dielectric Resonator Antenna and Filters

Microwave components are widely used in: Wireless Cellular Phones and Cable Televisions, Cellular Base Stations Direct Broadcast Satellite Receivers, Automobile Collision Avoidance Sensors, and so on.

Direct microwave components are material with high Q, good temperature stability, and high d constant enables design of stable microwave oscillators. It utilizes the latest piezo technology enabling the most cost-effective designs to be housed in the lowest profile packages for extremely high performance within limited space. SMD and reflow soldering is available and mountable by automatic placing machine. Custom packages are available in Direct. Please consult our sales representatives or engineers as regards the products of other frequency.

DIELECTRIC MICROWAVE PDF- Download Entire Dielectric Components Catalogue.
Thumbnail Type and Description
(DF-A) Dielectric Filters
Direct has extended the capabilities of its filter product line with the introduction of a new range of dielectric microwave filters to the available frequency range up to 5.8GHz. Direct designs and manufactures custom electronic filters for defence, telecommunications and similar application increasing the range of products available to customers.
DF-A Series - PDF
(DF-B) Dielectric Filters
Direct has extended the capabilities of its filter product line with the introduction of a new range of dielectric microwave filters to the available frequency range up to 5.8GHz. Direct designs and manufactures custom electronic filters for defence, telecommunications and similar application increasing the range of products available to customers.
DF-B Series - PDF
(DF-C/D) Dielectric Filters
Direct has extended the capabilities of its filter product line with the introduction of a new range of dielectric microwave filters to the available frequency range up to 5.8GHz. Direct designs and manufactures custom electronic filters for defence, telecommunications and similar application increasing the range of products available to customers.
DF-C/D Series - PDF
(DF) Dielectric Filters
Direct has extended the capabilities of its filter product line with the introduction of a new range of dielectric microwave filters to the available frequency range up to 5.8GHz. Direct designs and manufactures custom electronic filters for defence, telecommunications and similar application increasing the range of products available to customers.
DF Series - PDF
(DF- BP-R) Dielectric Filters
Direct has extended the capabilities of its filter product line with the introduction of a new range of dielectric microwave filters to the available frequency range up to 5.8GHz. Direct designs and manufactures custom electronic filters for defence, telecommunications and similar application increasing the range of products available to customers.
DF- BP-R Series - PDF
(DF-LJ) Dielectric Filters
Direct has extended the capabilities of its filter product line with the introduction of a new range of dielectric microwave filters to the available frequency range up to 5.8GHz. Direct designs and manufactures custom electronic filters for defence, telecommunications and similar application increasing the range of products available to customers.
DF-LJ Series - PDF
(DF - BP-S) Dielectric Filters
Direct has extended the capabilities of its filter product line with the introduction of a new range of dielectric microwave filters to the available frequency range up to 5.8GHz. Direct designs and manufactures custom electronic filters for defence, telecommunications and similar application increasing the range of products available to customers.
DF - BP-S Series - PDF
(DR) Coaxial Resonators
Coaxial resonator size and dielectric material is inversely proportional to the square root of the dielectric constant, dielectric materials, dielectric constant the greater the required dielectric ceramic block the smaller, thus the smaller the resonator size. Another important parameter is the insertion loss, low dielectric loss microwave dielectric materials, dielectric filters that affect the insertion loss of a major factor. Microwave dielectric Q value and dielectric loss is inversely proportional to the relationship. Q value is greater the lower the filter insertion loss.
DR Series - PDF
(DA) Dielectric Patch Antenna
Dielectric patch antenna is fed using coaxial ceramic media. By a coaxial extension of the inner conductor to form an oscillator, used to excitation of electromagnetic waves, the sleeve of the role of the media, except clamping bar, the more important is the reflection of electromagnetic waves, thus ensuring the incentives from the coaxial line inner conductor of electromagnetic waves to the free end of dielectric rod transmission.
DA Series - PDF
(TE) Dielectric Resonators & Materials
Comparing with microwave components made of Direct's ceramic materials and metal cavity resonator, obviously, Direct dielectric resonator features with a light weight, small volume, temperature coefficient of stability, cheap, and so on. They have been widely used in satellite broadcast reception systems, PCS / PCN filters, base stations, radar detectors, wireless mobile communications, telecommunications computer systems, military facilities, microwave, modern medicine and many other areas.
TE Series - PDF