RF Filters and Microwave Filters Information RF filters and microwave filters are devices that pass or reject signals by frequency. The filter design determines the amount of insertion loss and phase shift for signals that pass through the filter. There are several basic types of RF filters and microwave filters. Bandpass filters are active or passive circuits that pass signals from a specific frequency band and reject signals from out-of-band frequencies. Examples of bandpass...
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Q & A on RF Filters and Microwave Filters

We asked our users for their input on RF Filters and Microwave Filters. Here are the results of 50 users familiar with RF Filters and Microwave Filters.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing RF and microwave filter design?
6 answers
Answers:
High Power handling ( new ? ) and low PIM.
~Ingemar Bergström, Design Engineer, Täby, Sweden
Dielectric Resonating Filter, LTCC etc.
~Bharti Mrs, Design Engineer, Singapore, Singapore
UHF RFID implementation in mobile phone.
~Research & Development, Graz, Austria
All mobile cellphone applications.
~Miroslav Kerpcar, General Management, Kosice, Slovakia
Ceramic, Printed
~Gaurav A, Design Engineer, Bangalore, India
Surface mount
~Engineering, Design, Fremont, CA

Q:
From your perspective, which companies are creating the most innovative RF and microwave filters?
6 answers
Answers:
Microdata Telecom Innovation.
~Ingemar Bergström, Design Engineer, Täby, Sweden
Minicircuits, KR electronics
~Research & Development, Graz, Austria
Defense companies
~Gaurav A, Design Engineer, Bangalore, India
A/V Come Filters
~Saboor Ahmed, Engineering Consultant, Islamabad, Pakistan
Agilent etc.
~Bharti Mrs, Design Engineer, Singapore, Singapore
MCI
~Engineering, Design, Fremont, CA

Applications and UseTop

Q:
What are some of the applications you have used RF and microwave filters for?
15 answers
Answers:
Satellite Ground station transmit and receive, Electronic Warfare, HF and VHF Transceivers, Digital Terrestrial TV Receivers, Satellite TV Receivers, Signal sources....
~Engineering, Design, Kingston uopn Hull, United Kingdom
Dense reader filter mode test, bandwidth filter for 27 MHZ transceiver
~Research & Development, Graz, Austria
Power Amplifiers Low Noise Amplifiers EMC Applications
~Engineering, Design, London, Great Britain
Applying microwave power to different applications
~Tony S, Electro mechanical, Whitstable, United Kingdom
Minimization of RF interfering signals
~Marketing/Sales, Hillside, Australia
Wireless, Radar, Electronic warfare
~Gaurav A, Design Engineer, Bangalore, India
RF transmission and reception.
~Engineering, Design, Fremont, CA
UHF SATCOM Ground Station
~Engineering, Other, Bowie, MD
MMDS, WIFI, GSM, CATV
~Miroslav Kerpcar, General Management, Kosice, Slovakia
Receiver subsystem
~Bharti Mrs, Design Engineer, Singapore, Singapore
Cell Basestations
~Ingemar Bergström, Design Engineer, Täby, Sweden
Signal breaking
~Saboor Ahmed, Engineering Consultant, Islamabad, Pakistan
RF receivers
~Engineering, Design, Petah-Tikva, Israel
Filtering
~Engineering, Faculty/Staff/Student, Cape Town, South Africa
Telecoms
~Technical Support/Services, Bertrange, Luxembourg

Q:
Please share with us any “non-standard” applications that RF and microwave filters have been used for.
5 answers
Answers:
Mobile Phones, Medical Instruments, Microwave Oven etc.
~Bharti Mrs, Design Engineer, Singapore, Singapore
Pictures breaking
~Saboor Ahmed, Engineering Consultant, Islamabad, Pakistan
MMDS transceivers
~Miroslav Kerpcar, General Management, Kosice, Slovakia
PIM measurement.
~Ingemar Bergström, Design Engineer, Täby, Sweden
Digital RF test
~Research & Development, Graz, Austria

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of RF and microwave filters?
3 answers
Answers:
Purchasing several expensive types that were not effective, finding that off the shelf items were as good or better.
~Tony S, Electro mechanical, Whitstable, United Kingdom
Enormous losses at the output of receiver.
~Bharti Mrs, Design Engineer, Singapore, Singapore
Flash-over
~Ingemar Bergström, Design Engineer, Täby, Sweden

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
7 answers
Answers:
Coexistence in ISM bands different applications, like Wimax, MMDS, LTE To have material which will be good for extraordinary wide band tuning filter as well as narrow band
~Miroslav Kerpcar, General Management, Kosice, Slovakia
Cylindrical design allowing filter to be easily connected between antenna and coax cable (does not require attaching or mounting of the filter).
~Engineering, Other, Bowie, MD
1) Insertion loss 2) Return loss 3) Center Frequency 4) Bandwidth 5) Quality Factor
~Bharti Mrs, Design Engineer, Singapore, Singapore
Adjustable bandwidth with digital interface
~Research & Development, Graz, Austria
High performance with smallest footprint
~Gaurav A, Design Engineer, Bangalore, India
Low PIM, Easy tuning, composite.
~Ingemar Bergström, Design Engineer, Täby, Sweden
Effective, small & cheap
~Tony S, Electro mechanical, Whitstable, United Kingdom

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of RF and microwave filters?
5 answers
Answers:
Install the dish or equipment behind the wall or a solid thing.
~Saboor Ahmed, Engineering Consultant, Islamabad, Pakistan
1. Package type 2. Connector Specifications 3. Grounding
~Bharti Mrs, Design Engineer, Singapore, Singapore
Do not buy till you are sure.
~Tony S, Electro mechanical, Whitstable, United Kingdom
Low PIM over time.
~Ingemar Bergström, Design Engineer, Täby, Sweden
As above
~Miroslav Kerpcar, General Management, Kosice, Slovakia

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using RF and microwave filters?
3 answers
Answers:
Best optimized filters for SMD applications are very efficient, but major problem is to have special filters you need to have minimum quantities, which can easily reach more than 50k.
~Miroslav Kerpcar, General Management, Kosice, Slovakia
Select best Product based on latest technology and not based on brand.
~Bharti Mrs, Design Engineer, Singapore, Singapore
Get advice from experts.
~Tony S, Electro mechanical, Whitstable, United Kingdom


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