Low pass filter for suppressing harmonic of radio transmitter

Details Low pass filter for suppressing harmonic of radio transmitter Low pass filter for suppressing harmonic of radio transmitter

1996-12-30

1999-04-06

Eisenzopf, Reinhard J.

Telecommunications

Transmitter

Having harmonic radiation suppression

455 95, 455296, 333114, H04B 104

Patent

active

058930264

ABSTRACT:
A low pass filter capable of passing a radio paging signal of good quality through suppressing harmonic in a radio paging transmitter. The low pass filter of the radio paging transmitter, comprising: a first filter of a .pi. type for suppressing harmonic of a radio paging signal outputted, which is connected to an output terminal of the radio paging transmitter; and, a second filter for suppressing second and third harmonic or more of the radio paging signal, which is connected between the first filter and an antenna and comprised with multistage plane panel capacitors and parallel inductance and capacitors connected between the plane panel capacitors.

REFERENCES:
patent: 3787771 (1974-01-01), O'Connor
patent: 3832626 (1974-08-01), Stut
patent: 4429338 (1984-01-01), Becker et al.
patent: 4631232 (1986-12-01), Pitel
patent: 5245433 (1993-09-01), Sid-Ahmed et al.
patent: 5465396 (1995-11-01), Hunsinger et al.
patent: 5517532 (1996-05-01), Reymond
patent: 5530922 (1996-06-01), Nagode
patent: 5574993 (1996-11-01), Kobayashi et al.

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