Antenna Handbook

Build this Bandpass Filter for digital TV

Bandpass filter for digital TV antenna is to cut the ripple signal from band frequency TV reception on digital band between 470 MHZ - 800 MHz.
There are 2 kind of Bandpass filter.

1. RC Bandpass filter, which is using Resistor (R) and Capacitor (C) .

    RC Bandpass filter is combination between Low Pass Filter and High Pass Filter.

For Low Pass Filter , we use R and C component :

    R = 10 Ohm
    C = 33. 88 pF

For High Pass Filter, We use :

   R = 10 Ohm
   C = 18.3 pF

The Circuit is :

We can Supply SAW Resonator

We also supply the needs of SAW filters and SAW Resonator devices.

For SAW resonator , there is one port series with a wide range of packaging and frequency of different - different. No one series port for wireless remote controller with a frequency of 105 MHz - 325 MHz.

One-port SAW resonator series with a center frequency or center frequency 105.5 MHz, insertion loss 2.5 dB, Package SF-712, tolerance +/- 75 Khz.

Here is a one port SAW resonator that we have and we can supply for the needs of factory production.

Center Frequency: 158.15 MHZ, tolerance +/- 100 KHz, insertion loss is 1.5 dB, package SF-712, center frequency: 222.15 MHz, insertion loss is 1.5 dB, tolerance +/- 100 KHz and SF-712 package.

Center Frequency of SAW Resonator available to us:
105.5 MHz, 158.15 MHz, 222.15 MHz, 300 MHz, 302 MHz, 303,325 MHz, 303,825 MHz, 303,875 MHz, 304.25 MHz, 304.3 MHz, 308.5 MHz, 310 MHz, 311 062 MHz, 313.25 MHz, 314 MHz, 314.5 MHz, 315 MHz , 315.5 MHz, 315.5 MHz, 316.8 MHz, 318 MHz, 319 508 MHz, 319.5 MHz, 324 MHz, 325 MHz.

The frequency of the SAW resonator tolerance between +/- +/- 75 KHz and 100 KHz.

No insertion loss of 2.5 dB, 1.5 dB and 1.3 dB and the type of package for a SAW resonator that is SF-712, TO-39 / 39L, SM558, SM534, F-11 / 11L, F-11L

For more details of data can be downloaded here

There is also a one-port SAW resonators in series with a frequency range of 327-868 MHz. SAW Resonator is also used for wireless remote controller.

Center Frequency for the 327-868 MHz SAW Resonator start: 327.3 MHz, 300 MHz, 308 MHz, 340 MHz, 345 MHz, 350 MHz, 360 MHz, 372 MHz, 388.95 MHz, 390 MHz, 391 MHz, 395 MHz, 400 MHz , 407.3 MHz, 409 MHz, 417 MHz, 417.5 MHz, 418 MHz, 419.95 MHz, 423.17 MHz, 423.22 MHz with a frequency tolerance of +/- 75 KHz, insertion loss varies, there is 1.2 dB, and 1.5 dB 1.3dB and packaging TO-39 / 39L, F-11 / 11L, SM558, SM534

There is also a SAW Resonator one / two ports series with a frequency of 105.5 MHz - 868.35 MHz.

Here are the technical characteristics of SAW Resonator one / two ports series and equivalent circuits and part numbering.

D Sub Combo Series 1100 Series Combo D-Sub for Coax and High Power Solder Cup Type Material: Shell: Steel w/ Tin Plated (optional Zinc plating) Signal Contacts: Berylium Copper Coaxial Contacts: Brass Signal Contact Plating: 0.000005" Gold Coaxial Contact Plating: 0.000015" Gold High Power Contact Plating: 0.000015" Gold Contact Underplating: 0.000100" min. Nickel Insulation: PBT & 30% glass fiber reinforced thermo plastic: UL94V-O UL File# E107536, material D202G30 Electrical: Signal Contact Rating: 7.5 Amp Coax Impedance: 50 ohm or 75 ohm Coax VSWR: Less than 1.3 - 1.0 up to 500 MHZ Coax Insertion Loss: 0.1 dB loss at 55 MHZ High Power Contact Rating: 40, 20 or 10 Amp Dielectric Withstanding: 1500V at sea level Operation Temperature: -55oC to +105oC rohs-small.gif Mechanical Specification and Mounting Option: Shell Size Plug \ Recept Dimensions mm A B C D E Plug 30.81 16.92 24.88 8.36 Recept 16.33 7.87 A Plug 39.14 25.25 33.32 8.36 Recept 24.66 7.87 B Plug 53.04 38.96 47.04 8.36 Recept 38.38 7.87 C Plug 69.32 55.42 63.50 8.36 Recept 54.84 7.87 D Plug 66.93 52.81 61.11 8.36 Recept 52.43 7.87 Option Part Number (Suffix) 3.0 dia Hole - (Standard) Fixed Jack Screw 2NA Clinch Nut 2N Ordering Part Numbers Effective Apr. 15, 2001 part numbers for this series has changed. The part numbers below are the new P/N. Click Here to see a cross reference of the new P/N to the old P/N. For assistance E-Mail us at sales@hochien.com or call (909)596-6298. Shell Size Contact Arrangements (Front view of Plug/ Rear view of Recept) Plug \ Recept Part Number (Tin Shell) Housing Only Set (Contacts packaged separately) Coax Combo** High Power Combo 50 Ohm 75 Ohm 40 Amp 20 Amp 10 Amp E 2W2 Plug 1100-22T 1150-22T 1170-22T 1140-22T 1120-22T 1110-22T Recept 1101-22T 1151-22T 1171-22T 1141-22T 1121-22T 1111-22T 5W1 Plug 1100-51T 1150-51T 1170-51T 1140-51T 1120-51T 1110-51T Recept 1101-51T 1151-51T 1171-51T 1141-51T 1121-51T 1111-51T A spec-coax-3w3.gif 3W3 Plug 1100-33T 1150-33T 1170-33T 1140-33T 1120-33T 1110-33T Recept 1101-33T 1151-33T 1171-33T 1141-33T 1121-33T 1111-33T spec-coax-3V3.gif 3V3 Plug 1100-23T 1150-23T 1170-23T 1140-23T 1120-23T 1120-32T Recept 1101-23T 1151-23T 1171-23T 1141-23T 1121-23T 1111-32T 7W2 Plug 1100-72T 1150-72T 1170-72T 1140-72T 1120-72T 1110-72T Recept 1101-72T 1151-72T 1171-72T 1141-72T 1121-72T 1111-72T 11W1 Plug 1100-11T 1150-11T 1170-11T 1140-11T 1120-11T 1110-11T Recept 1101-11T 1151-11T 1171-11T 1141-11T 1121-11T 1111-11T B 5W5 Plug 1100-55T 1150-55T 1170-55T 1140-55T 1120-55T 1110-55T Recept 1101-55T 1151-55T 1171-55T 1141-55T 1121-55T 1111-55T 13W3 Plug 1100-13T 1150-13T 1170-13T 1140-13T 1120-13T 1110-13T Recept 1101-13T 1151-13T 1171-13T 1141-13T 1121-13T 1111-13T 17W2 Plug 1100-12T 1150-12T 1170-12T 1140-12T 1120-12T 1110-12T Recept 1101-12T 1151-12T 1171-12T 1141-12T 1121-12T 1111-12T 21W1 Plug 1100-21T 1150-21T 1170-21T 1140-21T 1120-21T 1110-21T Recept 1101-21T 1151-21T 1171-21T 1141-21T 1121-21T 1111-21T C 8W8 Plug 1100-88T 1150-88T 1170-88T 1140-88T 1120-88T 1110-88T Recept 1101-88T 1151-88T 1171-88T 1141-88T 1121-88T 1111-88T 21W4 Plug 1100-24T 1150-24T 1170-24T 1140-24T 1120-24T 1110-24T Recept 1101-24T 1151-24T 1171-24T 1141-24T 1121-24T 1111-24T D 36W4 Plug 1100-34T 1150-34T 1170-34T 1140-34T 1120-34T 1110-34T Recept 1101-34T 1151-34T 1171-34T 1141-34T 1121-34T 1111-34T * The Housing Only Part Numbers includes Housing, and Preloaded Signal Contacts Only. * Coaxial Contacts w/ Ferrule or High Power Contacts are ordered seperately, see table below for Part Numbers. * Economic stamp pin type on signal contacts available. * Shell plating, Insulation color and gold on contact options are available. Contact Ho Chien for more info. ** Coax contacts included in set part numbers are for RG179 Cables. Contact Ho Chien for part number for other cables. Coaxial Contacts - Solder Cup Type No. Description Material Coments 1 Center Contact Brass 0.000015" Gold over 0.000050" min. Nickel 2 Outside Contact Brass 0.000015" Gold over 0.000050" min. Nickel 3 Insulator Teflon UL94V-O; White 4 Lock Link Copper Alloy Nickel Plated Ordering Part Number Includes Ferrules Type Part Number Dimensions (mm) RG Cable No. 50 ohm 75 ohm A B C Plug 1150-00-1 1170-00-1 2.50 1.80 3.20 179B/U 1150-00-2 1170-00-2 2.60 2.20 3.50 180B/U 1150-00-3 1170-00-3 4.80 1150-00-4 1170-00-4 3.80 3.10 4.60 58B/U 1150-00-5 1170-00-5 5.10 1150-00-6 1170-00-6 6.30 Recept 1151-10-1 1171-10-1 2.50 1.80 3.20 179B/U 1151-10-2 1171-10-2 2.60 2.20 3.50 180B/U 1151-10-3 1171-10-3 4.80 1151-10-4 1171-10-4 3.80 3.10 4.60 58B/U 1151-10-5 1171-10-5 5.10 1151-10-6 1171-10-6 6.30 High Power Contacts - Solder Cup Type For Ordering Individual Contacts Solder Type Part Number Dimensions (mm) Rating (Amps) Wire Size (AWG) Plug Contact Recept Contact A B C 40 # 8 1140-00 1141-10 4.6 5.5 5.5 20 # 12 1120-00 1121-10 2.7 3.6 5.0 10 # 16 1110-00 1111-10 1.7 2.5 4.5 For Ordering Individual Contacts Crimp Type Part Number Dimensions (mm) Rating (Amps) Wire Size (AWG) Plug Contact Recept Contact A B C 40 # 8 1A40-00 1A41-10 4.6 5.5 5.5 20 # 12 1A20-00 1A21-10 2.7 3.6 5.0 10 # 16 1A10-00 1A11-10 1.7 2.5 4.5

We sell RF Low Noise Amplifier

We sell RF Low Noise Amplifier for Satellite TV Receiver, RF LNA Amplifier for TV reception.

ITEM Package Magnification Mark

2SC3357 SOT-89 90-150 RF