Electronic Components Blog

Thursday, 20 June 2013 13:38

GSM/UMTS Rejection JTIDS/MIDS Passband Filter

GSM/UMTS Rejection JTIDS/MIDS Passband Filter

The L-band spectrum has become congested with military (JTIDS/MIDS, SSR, B-AMC, DME, UAT, etc.) and wireless (GSM/UMTS) communication platforms, leading in some scenarios to severe interference. K&L Microwave has developed a unique highpass filter, 7HP-960/X1215-O/O, with particularly sharp roll-off to mitigate such interference.

 The design utilizes several technologies to optimize the unloaded "Q" to volume ratio and realizes 3 zeroes at DC and 6 finite zeroes. Possible uses include reducing the out-of-band emissions of military transmitters at commercial mobile

Related Solutions

  • MPG solutions to your RF Filter Design

    In 2014 Heynen has teamed up with the Microwave Product Group in Salesbury, Maryland, United States. Team players in this group are BSC-Filters, Dow-Key, K&L Microwave and Pole-Zero, four well-established companies in the RF industry.

    Providing solutions on filter design in a wide range of application areas, like communication, radar, industry, army and commerce. This covering Low to High Power, Low MHz to High GHz Range and miniaturization.

    Connection to the internet by RF is becoming a more or less a standard approach. Our phones, ipads, laptops, heating, lighting, all are using a more or less sophisticated connection to the internet.

    The MPG group has been publishing an article in the Microwave Journal, highlighting the trends and new market driven Filter advances, seen in the industry.

    In case you are looking for a solution in the RF space, Heynen and MPG can certainly help you in finding the right system, module part and, if needed, customized to your needs.

    You can see some highlights of the article in the next three paragraphs.

  • Create your custom microwave filter online

    K&L Microwave's Filter Wizard® software simplifies the selection of the right filter product for your application from a vast number of available designs. Provide the Filter Wizard with your desired specifications, and the software will return a list of products that match. If the Filter Wizard selection algorithm cannot match the criteria specified, you will be forwarded to our quote request page.

  • Need for ultra-miniature switches in you application?

    Your application needs RF switching on you PCB but there is no space available.  Dow Key now has the possibility to reduce your switch to miniature level.

    The switches are designed with an overall size of 0.75 x 0,75 x 0,56 Inch with a weight of 0,5 Ounces, power consumption of these switches is kept very low.

    This brings the switches on your PCB for sattelite and space applications enabling you to go one step further in miniaturisation



  • Space Grade RF, Coaxial And Waveguide Switches? Dow-Key!

    Whenever you work with space grade RF, coaxial and waveguide switches, and need high reliability solutions that can withstand the severe environments space imposes on complex systems...Dow-Key is confident in providing these solutions with decades of experience and knowledge.

  • Smart Customized RF Solutions for your Application testing

    Aeroflex / Weinschel supplies your design team with smart solutions to challenging test, simulation and RF distribution requirements by offering subsystem products that are either off-the-shelf or designed to your specifications.

    Solutions are available within a large variety of application areas like telecommunications, radar and CNI, satellite and groundcommunication systems, base station and mobile unit software conformance verification, signal analysis, cable modem and VoIP testing, production test systems and precision microwave related test instruments.


  • MPG - K&L Microwave

    K&L designs and manufactures a full line of RF and microwave filters, duplexers and subassemblies, including ceramic, lumped element, cavity, waveguide and tunable filters. K&L supplies many of today's most significant military and homeland security defense electronics programs. Applications include satellite communications, radar, radio communications, fire control radars, telemetry applications, missile guidance systems, mobile radio base stations and air traffic control and communications.

Related Blog messages

  • K&L's WSD-01039 Bandpass/stop diplexer for Band 7

    K&L Microwave's WSD-01039 bandpass/bandstop diplexer is designed for Band 7 uplink spurious measurement testing. The diplexer's bandpass features 0.5 dB insertion loss in the passband of 2500 to 2570 MHz, while the bandstop achieves 40 dB rejection in the same band. The design and performance provide a bandpass filter with a good match in the stopband region.

  • K&L's Digitally Controlled Tunable Filters Up to 8 GHz

    K&L Microwave, part of the Microwave Products Group, is now offering tunable filters covering ranges up to 8 GHz. The filters provide high Q tunable solutions for many of today's higher frequency applications utilizing 5-section coaxial cavity construction based on theoretical Chebyshev designs.

  • Dow-Key Microwave Miniature MS series

    Dow-Key Microwave introduces the next generation of switch matrices: the Miniature MS series (or MMS series). MMS is ideal for test and measurement requirements. The series is equipped with high-performance Reliant Switches™ providing 0.03 dB insertion loss repeatability across DC to 26.5 GHz with minimum 10 million life cycles for SPDT and 5 million for SP6T. MMS is suitable for many applications where RF switches are needed, including extensive DUT testing. The series needs 12VDC power supply with switches controlled remotely via TCP/IP Ethernet and HTTP-Server; a built-in “Sequencer” feature allows the user to program up to ten 500-step sequence programs. A VAC-to-DC adapter is included. (RF cables are not.)