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Je nach Bandbreite und Frequenzbereich kommen unterschiedliche Filtertechnologien in Frage. Die Grafik zeigt sehr übersichtlich den jeweilige Anwendungsbereich der einzelnen Filtertechnologien. Nachfolgend finden Sie weitere Informationen zu den entsprechenden Serien.

K&L Microwave’s series of combline filters covers the frequency range from 500 MHz to 40 GHz. These filters are available with 2 to 17 resonant sections and bandwidths from 3% to 18%. Although standard designs offer VSWR specifications of 1.5:1 maximum, the series lends itself to specifications as low as 1.2:1.

While the standard product offers excellent characteristics, K&L can enhance parameters such as insertion loss and power handling capacity (both peak and average) through special package design. As seen with the examples below, K&L’s design engineers work with our customers to meet specialized package configurations.

The combline filter series provides an extremely small high “Q” device suitable for rugged environmental requirements in a practically unlimited range of applications.

As a result of computer aided design and computerized machining equipment, the package size for this series can be optimized for performance requirements; therefore, there are no limitations of fixed package size.

The recurring passband typically begins at 3.5 x ƒc for the standard design.

Detailed Datasheets:

Mini-Pack

Cavity Custom

K&L's Dielectric Resonator Bandpass Filters are available in standard packages with a basic Chebychev design. Connectors available are SMA and RF pins. Through the use of ceramic technology, this filter series offers superior temperature stability and low insertion loss.

Detailed Datasheets:

K&L Microwave offers Lumped Components filters with a broad selection of frequencies, topologies and packages. Use of standard packages has enabled K&L to provide custom units while keeping design time to a minimum. Packages available include Miniature, which cover the 0.5 to 200 MHz frequency range, as well as Microminiature, which cover the 30 to 10,000 MHz frequency range. The topologies are offered in highpass, lowpass, bandpass, bandreject and multiplexer designs.
Special design capabilities include, but are not limited to, elliptical, pseudo-elliptical, amplitude equalization, group delay equalization, bessel, gaussian and highpower requirements.
Each model can be packaged to withstand severe environmental stresses including temperature, humidity, shock, vibration and acceleration.

Detailed Datasheets:

IB Series

Diplexer, High Power and Custom

K&L Microwave offers as many solutions to customer requirements as there are applications. We have several state-of-the art design packages that can meet the most stringent customer demands as well as custom designs to fit the needs of the point-to-point radio market, which requires high volume product at competitive pricing. K&L also offers waveguide solutions for lower quantities with specialized applications.
K&L will quote the right solution to meet your company’s waveguide requirements. Call our factory today and discuss your specific application with our technical sales staff.

Rectangular Mode
K&L offers rectangular waveguide in the TE 101 mode from 2.5 to 40 GHz. Types of filters offered include bandpass filters, diplexers and lowpass filters. K&L utilizes high performance proprietary and purchased software that minimizes tuning time and maximizes performance. K&L offers multiple diplexer configurations including “Tee” and “Y” junctions as well as rectangular transmit and receive ports with circular antenna ports. Rectangular waveguides are available from 1 to 20% bandwidth with 2 to 20 sections.
Waveguide filters come with any choice of connectors or flange mounts available for your frequency range. K&L will create customer specific mounting applications to ensure mechanical fit to your special requirements.

Circular Mode
K&L offers circular mode waveguide filters that are Te 111 mode filters available from .1 to 1.8% bandwidth. These circular filters are offered from 2 to 6 sections and are part of K&L‘s C60 series
products.

Detailed Datasheets:

Custom S.S.

Low Profile Switched Filter Bank
5SFB-3500/X5500-SMP is a high speed TTL controlled 5 channel switched filter bank that covers 3500 to 5500 MHz with channels centered at 3500MHz, 4000MHz, 4500MHz, 5000MHz, and 5500MHz. Recent enhancements to K&L’s switched filter banks make them among the fastest and most reliable on the market today. Switching speeds less than 20 ns improve overall system performance. Additionally, low profile packaging makes these new banks ideal for compact, light weight applications. Banks are designed using K&L’s breadth of experience in filter topologies, assuring high out-of-band attenuation and channel-to-channel isolation.

4SFB-00021
- Low Insertion Loss
- Laser Sealed for Harsh Military Enironments
- Small size
- Proven Lumped Component Filter Design

Channelising Filter Bank
- 1 to 8, 12, or 16 Way Channelising Filter Bank
- Frequency 2 to 4 GHz
- Outputs are Amplitude Matched to + /- 0.5 dB Against a Common Reference
- Hermetically Sealed

Modular Switch Filter Bank
- 2 Channel Through to a 7 Channel Configuration
- Low profile packaging
- High Channel to Channel Isolation
- Removable SMA Connectors and Filters

2 channel - High Frequency Switched Filter Bank
- Narrow Band Cavity Design for Low Loss
- Compact Size
- Rugged Design with Mounting Flange for Military Application
- 0 to + 70 Degrees C Operating Temperature Range
- TTL Compatible
- Moderate Switching Speed
- Control Connector: DEM9P
- RF Connections: SMA Female

4-Channel - Switched Filter Bank
- Compact Package
- TTLControlled
- Terminated and By-Pass Mode
- 80 dB Stopbands

Detailed Datasheet

K&L’s tubular filters are offered in four sizes ranging from .25 to 1.25 inches in diameter, in both lowpass and bandpass topologies that cover a frequency range from 40 MHz to 20,000 MHz. K&L uses a low ripple Chebyshev design to yield low insertion loss in the passbands and high attenuation levels in the stopbands.
The four basic sizes offer the customer a choice in sizes and performances to best meet their needs.
The .25” diameter series offers miniature size and volume along with higher frequency operation.
The .5” diameter is the most versatile for most applications, offering convenient size and broad frequency range, while being the most economical choice.
The .75” and the 1.25” diameters offer lower loss, high power and lower frequency of operation.

Detailed Datasheets:

Tubular Custom

K&L Microwave offers a variety of Tunable Filter products to satisfy a broad range of filtering applications. Tunable Bandpass and Bandreject filters provide the best solution for pre-tuning the desired signals while rejecting the interfering signals. The method of tuning can be either mechanical via a tuning knob mounted on the front of the filter, or electro-mechanical via an optional remote digital interface such as GPIB, RS-232, RS-422 or BCD. Tunable filters can be offered to cover frequencies as low as 200KHz, or as high as 18GHz. K&L Microwave offers Tunable Filters from stock, which cover many popular frequencies for applications such as military communications and many popular wireless bands. Depending on the specific application, the tuning ranges can exceed an octave.

Detailed Datasheets:

Digitally Controlled

UHF/VHF Ruggedized Bandpass

Stock Tunables

K&L Microwave offers as many solutions to customer requirements as there are applications. We have several state-of-the art design packages that can meet the most stringent customer demands as well as custom designs to fit the needs of the point-to-point radio market, which requires high volume product at competitive pricing. K&L also offers waveguide solutions for lower quantities with specialized applications.
K&L will quote the right solution to meet your company’s waveguide requirements. Call our factory today and discuss your specific application with our technical sales staff.

Rectangular Mode
K&L offers rectangular waveguide in the TE 101 mode from 2.5 to 40 GHz. Types of filters offered include bandpass filters, diplexers and lowpass filters. K&L utilizes high performance proprietary and purchased software that minimizes tuning time and maximizes performance. K&L offers multiple diplexer configurations including “Tee” and “Y” junctions as well as rectangular transmit and receive ports with circular antenna ports. Rectangular waveguides are available from 1 to 20% bandwidth with 2 to 20 sections.
Waveguide filters come with any choice of connectors or flange mounts available for your frequency range. K&L will create customer specific mounting applications to ensure mechanical fit to your special requirements.

Circular Mode
K&L offers circular mode waveguide filters that are Te 111 mode filters available from .1 to 1.8% bandwidth. These circular filters are offered from 2 to 6 sections and are part of K&L‘s C60 series
products.

Detailed Datasheet